270 results on '"Triple layer"'
Search Results
2. Simulation study of CsPbIxBr1-x and MAPbI3 heterojunction solar cell using SCAPS-1D.
- Author
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Khatoon, Sidra, Chakraborty, Vishwadeep, Yadav, Satish Kumar, Diwakar, Sujata, Singh, Jyotsna, and Singh, Rajendra Bahadur
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SOLAR cells , *PHOTOVOLTAIC power systems , *HETEROJUNCTIONS , *PEROVSKITE , *SCIENTIFIC community - Abstract
• A CsPbI 2 Br, CsPbIBr 2 and MAPbI 3 based triple layer perovskite solar cell simulated using SCAPS-1D. • A remarkable efficiency of 29.92% has been achieved in all perovskite triple layer solar cell. • The efficiency of the bilayer and single-junction solar cells was also 20.62% and 7.0%, respectively. • Effect of absorber layer thickness, defect density and interface defect density has been observed on the performance of perovskite solar cell. The perovskite solar cells are attaining maximum efficiency but lagging in stability as compared with other solar cells. The consistent use of hybrid organic–inorganic materials in PSC poses greatest hurdle in the path of stability. To overcome this problem the attention of research community, is diverted from methyl ammonium based perovskite solar cells to cesium (Cs) based perovskite solar cell. To enhance the efficiency of PSCs further, effective absorption of solar-spectrum by the multi-layer will allow the maximum utilization of spectrum and in turn it will increase the efficiency of the resulting Perovskite Solar Cell (PSC). Here, we have analyzed the efficiencies of single, double and triple absorber layers PSCs. Initially we have simulated and studied the performance of two CsPbI 2 Br and CsPbIBr 2 based single-junction perovskite solar cell. Then we have simulated a PSC with CsPbI 2 Br and CsPbIBr 2 as the two absorber layers and have optimized the performance of bilayer solar cell. Finally, we simulated a triple layer PSC have used the combination of CsPbI 2 Br, CsPbIBr 2 and MAPbI 3 as absorber layers. The bilayer and triple layer PSCs are optimized with respect to different variables i.e., absorber layer thickness, defect density and interface defect density in all three PSCs. In this study we achieved a remarkable efficiency of 29.92%, 20.62% and 7% efficiency in case of triple layer solar cell, in case of bilayer solar cell and in case of single-junction PSC respectively. Thus, well aligned multiple absorber layers in PSC will provide the future pathways for highly efficient PSCs. [ABSTRACT FROM AUTHOR]
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- 2023
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3. Bulk TMDCs: Review of Structure and Properties
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Kolobov, Alexander V., Tominaga, Junji, Hull, Robert, Series editor, Jagadish, Chennupati, Series editor, Kawazoe, Yoshiyuki, Series editor, Osgood, Richard M., Series editor, Parisi, Jürgen, Series editor, Seong, Tae-Yeon, Series editor, Uchida, Shin-ichi, Series editor, Wang, Zhiming M., Series editor, Kolobov, Alexander V., and Tominaga, Junji
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- 2016
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4. Calcium ion effects on the water/oil interface in the presence of anionic surfactants.
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Riccardi, Enrico and Tichelkamp, Thomas
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CALCIUM ions , *ANIONIC surfactants , *ELECTRIC double layer , *IONIC strength , *IONIC surfactants , *MICELLAR solutions - Abstract
The influence of ion type at constant ionic strength on the surfactant layer present between a polar and a non-polar liquid has been investigated. The investigated systems are composed of sodium bis(2-ethylhexyl) sulfosuccinate (AOT), dodecane and brines with different electrolyte compositions. Parallel and coordinated sampling have been performed via molecular dynamics simulation and experiments. By varying the molar ratio between calcium and sodium ions at constant ionic strength, we determined the relative influence of the bivalent ion. In the present work, firstly, we provide an atomistic description via molecular dynamics (MD) simulations of the surfactant and electrolyte distributions in respect to the dodecane-water interface. Secondly, we report the interfacial tension (IFT) and the estimated Debye length based on the theory of the electric double layer, comparing the simulation results with a classical interface description. [ABSTRACT FROM AUTHOR]
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- 2019
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5. Fluid dynamic and autoignition characteristics of early fuel sprays using hybrid atomization LES.
- Author
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Shinjo, Junji and Umemura, Akira
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ATOMIZATION , *SPRAY combustion , *TIME delay estimation , *KINEMATIC viscosity , *PSEUDOPLASTIC fluids , *SPRAYING - Abstract
Abstract Early fuel spray development and subsequent autoignition are investigated using our turbulent atomization model that has enabled physically-closed primary atomization modeling. Thanks to its modeling methodology, no parameter tuning or adjustment is needed to simulate a turbulent spray. Due to turbulent atomization, a dense droplet layer is formed over the injected liquid core. With evaporation, this region has a triple layer structure, which is composed of the inner layer with many droplets, the vaporization layer and the outer layer exposed to the hot air. With combustion, hot spots are generated in the outer layer, while the inner layer is too cold and hinders the hot gas to penetrate inside. The group combustion number indicates that this is sheath evaporation/combustion mode and its structure is preserved down to the liquid core length. The liquid core thinning is determined by atomization characteristics and under evaporative/reactive conditions where the outer gas temperature is high and thus the kinematic viscosity is also high, the flow motion is larger and the core is unsteadily affected by this motion. Due to this, the Rayleigh–Taylor (RT) atomization mode is further excited and core breakup occurs relatively faster. It is also observed that the unsteady core head flapping motion leads to non-uniform distributions of droplets and vapor. Due to this non-uniformity, the initial autoignition in the outer layer does not occur uniformly. After core breakup, the droplet layer rolls up in the front region and the group combustion number becomes lower, where external group combustion behavior is observed. Multistep chemistry improves the ignition delay estimation compared with the global chemistry, but the spray dynamics is mostly determined by the above fluid dynamic effects. Therefore, the present study indicates that the accurate simulation capability of fluid dynamics, i.e. primary atomization and early spray development, is important in predicting spray combustion behavior. [ABSTRACT FROM AUTHOR]
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- 2019
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6. Fabrication of hole-transport-free perovskite solar cells using 5-ammonium valeric acid iodide as additive and carbon as counter electrode.
- Author
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Santhosh, N., Sitaaraman, S.R., Pounraj, P., Govindaraj, R., Pandian, M. Senthil, and Ramasamy, P.
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FABRICATION (Manufacturing) , *PEROVSKITE , *SOLAR cells , *VALERIC acid , *ELECTRODES , *AMMONIUM , *IODIDES - Abstract
Highlights • 5-Ammonium valeric acid iodide cation was synthesized and used as an additive. • Linear hydrogen bonding between 5-AVAI and Perovskite could enhance the shelf-life. • Carbon based perovskite solar cell performance remains ∼90% over 75 days. Abstract Perovskite solar cell (PSC) was fabricated in ambient atmospheric conditions with carbon as counter electrode (CE). 5-Ammonium valeric acid iodide (5-AVAI) cation was synthesized and used as an additive in the perovskite precursor. The light absorber, perovskite precursor was infiltrated on to the TiO 2 /ZrO 2 /Carbon layer and annealed at 60 °C for 30 min. The perovskite layer was characterized by Ultraviolet–visible spectroscopy, Photoluminescence (PL) spectroscopy, and optical microscope analysis. The carbon perovskite solar cell was characterized by Photocurrent-Voltage (J-V) measurement and Incident Photon to Current Conversion Efficiency (IPCE) measurement. The device power conversion efficiency of the perovskite solar cell was found to be 6.6% with an active area of 0.25 cm2. The lifetime of electron injection is found to be 2.5 ms, which is noticed from, bode plot. From electrochemical impedance spectrum, lower charge transport resistance (R ct) is observed at the interface of perovskite/carbon CE. The shelf-life of the device was investigated under ambient condition and its performance remains over ∼90% even after 75 days. This triple layer device architecture shows a hopeful photovoltaic technology towards commercialization. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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7. Ultrasonic motors with poly phenylene sulfide/alumina/PZT triple-layered vibrators.
- Author
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Wu, Jiang, Mizuno, Yosuke, and Nakamura, Kentaro
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ULTRASONIC motors , *VIBRATORS , *POLYPHENYLENE sulfide , *ALUMINUM oxide , *TORQUE - Abstract
Highlights • An ultrasonic motor with a PPS/alumina/PZT triple-layered vibrator has been proposed. • The force factor of the triple-layered vibrator reaches its maximal value when the neutral axis locates on the boundary between the alumina and PZT disks. • The output torques and power have been markedly enhanced after the triple-layered vibrators were used. Abstract Our previously reported ultrasonic motors with poly phenylene sulfide (PPS)/lead zirconate titanate (PZT) double-layered vibrators were capable of providing high rotation speeds and light weight, but their output torques and power were limited owing to the low stiffness of PPS vibrating bodies. In this study, we constructed a triple-layered vibrator by sandwiching a thin alumina disk between the PPS vibrating body and PZT disk to compensate the stiffness. First, their fundamental vibration characteristics were investigated as some of key dimensions were varied. The force factor of the PPS/alumina/PZT triple-layered vibrator reached the maximal value when the neutral axis located at the boundary between the PZT and alumina disks. In contrast, the neutral axes existed in the PZT disks for the PPS/PZT double-layered vibrators; this caused the relatively low force factors compared to the triple-layered vibrators. Subsequently, the load characteristics of the PPS/alumina/PZT triple-layered motors were experimentally assessed. The maximum output torque and power of the triple-layered motors were 5 and 13 times the values of the double-layered motors, respectively, owing to the enhanced force factor and electromechanical coupling factor. Besides, the optimal thickness was lower for the triple- than for the double-layered motor. These advantages indicate the potential of our newly designed triple-layered motors for practical applications. [ABSTRACT FROM AUTHOR]
- Published
- 2018
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8. Faster Synchronization of Triple Layer Neural Network Using Nature Inspired Whale Optimization: A Key Exchange Protocol
- Author
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Arindam Sarkar
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Artificial neural network ,biology ,business.industry ,Triple layer ,Whale ,Computer science ,Computer Science Applications ,biology.animal ,Synchronization (computer science) ,Electrical and Electronic Engineering ,Nature inspired ,business ,Protocol (object-oriented programming) ,Key exchange ,Computer network - Published
- 2021
9. Triple-layer attention mechanism-based network embedding approach for anchor link identification across social networks
- Author
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Huiyuan Cui, Yao Li, Xiaoou Li, and Huilin Liu
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Task (computing) ,Identification (information) ,Theoretical computer science ,Artificial Intelligence ,Triple layer ,Computer science ,Network embedding ,Embedding ,Mechanism based ,Link (geometry) ,Software ,Common space - Abstract
Anchor link identification is a task that determines which pair of accounts in different social networks belongs to the same user. As a foundation of many applications, such as information dissemination across networks, anchor link identification has attracted much attention in recent years. Several methods learned a latent common space to preserve the structural proximity of accounts, such that the contributions of diverse neighbors are ignored due to the unweighted edges. In sparse networks, the overlapping of neighbors is rare and structural similarities are small, resulting in performance degradation of these methods. In this paper, we propose a triple-layer attention mechanism-based network embedding (TANE) method which utilizes the network structure to identify anchor links. TANE has two learning modules: the attention learning module which learns contribution weights of intranetwork and internetwork neighbors in anchor link identification under the supervision of observed anchor links, and the embedding learning module which tries to learn a latent common space by preserving weighted structural proximity of neighbors and second-order neighbors (i.e., neighbors of neighbors). By exploiting second-order neighbors, more structural information is introduced into embedding processing, which reduces sparsity. The weights and embeddings are transferred between modules and learned uniformly by Adam algorithm. Extensive experimental results of two real-world datasets show that TANE can improve the top-k hit ratio of anchor link identification compared with several state-of-the-art methods.
- Published
- 2021
10. Tightening and Reduction of Unwanted Submental Fat Using Triple-Layer High-Intensity Focused Ultrasound: Clinical and 3-Dimensional Imaging Analysis
- Author
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Jae Yoon Jung, Gyeong-Hun Park, Mira Choi, Hyuck Hoon Kwon, and Steven Hoseong Yang
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Adult ,Male ,Chin ,medicine.medical_specialty ,Triple layer ,Ultrasonic Therapy ,medicine.medical_treatment ,Cosmetic Techniques ,Dermatology ,Imaging, Three-Dimensional ,Rating scale ,medicine ,Humans ,Adverse effect ,Reduction (orthopedic surgery) ,business.industry ,General Medicine ,Middle Aged ,High-intensity focused ultrasound ,Regimen ,Three dimensional imaging ,medicine.anatomical_structure ,Adipose Tissue ,Female ,Surgery ,Radiology ,business - Abstract
Background Unwanted submental fat (SMF) is aesthetically unappealing, but methods of reduction are either invasive or lack evidence of their use. Objective The authors sought to evaluate the safety and efficacy of a novel triple-layer high-intensity focused ultrasound (HIFU) regimen for SMF reduction. Methods Forty Korean subjects with moderate/severe SMF were evaluated after receiving a session of triple-layer HIFU treatments (using 3.0-, 4.5-, and 6.0-mm focusing transducers). The objective evaluation based on the 5-point Clinician-Reported Submental Fat Rating Scale (CR-SMFRS) and patients' satisfaction based on the 7-point Subject Self-Rating Scale (SSRS) were determined 8 weeks after treatment. Three-dimensional image analysis was also performed. Results At the follow-up visit, the proportion of treatment responders defined as subjects with ≥1-point improvement in CR-SMFRS was 62.5%, and the proportion of patients satisfied with appearance of their face and chin (score ≥4 on the SSRS) was 67.5% of the total patients. The results of 3-dimensional analysis were consistent with clinical observations. Only mild and transient side effects were observed for some patients with no serious adverse effects. Conclusion The triple-layer HIFU regimen including the novel 6.0-mm transducer has benefits for tightening and rejuvenation of the area with unwanted SMF, showing reasonable safety profiles.
- Published
- 2021
11. An implicit time marching Galerkin method for the simulation of icing phenomena with a triple layer model.
- Author
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Chauvin, R., Bennani, L., Trontin, P., and Villedieu, P.
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GALERKIN methods , *ICING (Meteorology) , *FINITE element method , *MASS transfer , *ENERGY consumption - Abstract
In the context of more electrical aircraft and reduction of fuel consumption, aircraft manufacturers are moving towards more complex and transient ice protection systems. The operating of these systems involves several unsteady heat and mass transfer phenomena. Modelling and numerical simulation play an important role in the investigation of these unsteady phenomena. In this paper, a model for unsteady ice build-up and melting is presented. The model is based on a triple layer assumption. In addition, a tailored numerical methodology for solving the governing partial differential equations is also described. It is based on a Galerkin finite element method and a Gauss-Seidel like implicit time marching scheme. The global method is validated and its capabilities are demonstrated on several cases. [ABSTRACT FROM AUTHOR]
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- 2018
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12. Atomic Manipulation on an Insulator Surface
- Author
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Hirth, Sabine, Ostendorf, Frank, Reichling, Michael, Morita, Seizo, editor, Giessibl, Franz J., editor, and Wiesendanger, Roland, editor
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- 2009
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13. Novel Triple-Layer HIPS/SBR/PP Nanofibrous Membranes for Robust DCMD Desalination
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Ali Kargari, Ali Sallakh Niknejad, and Saeed Bazgir
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Polypropylene ,Materials science ,Fabrication ,Triple layer ,General Chemical Engineering ,02 engineering and technology ,General Chemistry ,021001 nanoscience & nanotechnology ,Desalination ,Industrial and Manufacturing Engineering ,chemistry.chemical_compound ,Membrane ,020401 chemical engineering ,chemistry ,Polystyrene ,0204 chemical engineering ,Composite material ,0210 nano-technology ,Layer (electronics) - Abstract
In this work, a novel method for the fabrication of robust triple-layer membranes composed of nanofibrous high-impact polystyrene (HIPS) as the top layer, commercial fibrous polypropylene (C-PP) as...
- Published
- 2021
14. Nanoimprint Lithography
- Author
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Chou, Stephen Y., Lockwood, David J., editor, and Sotomayor Torres, Clivia M., editor
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- 2003
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15. InP/GaInP Quantum Dot Lasers
- Author
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Schmidt, Oliver G., Manz, Yvonne M., Eberl, Karl, Avouris, Phaedon, editor, von Klitzing, Klaus, editor, Sakaki, Hiroyuki, editor, Wiesendanger, Roland, editor, and Grundmann, Marius, editor
- Published
- 2002
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16. Experimental Analysis of Impulse Characteristics Of Grounding Grids with and without Rods.(Dept.E)
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Ibrahim A. Metwally, Magdy Mohamed Ali El-Saadawi, and S. A. El-Drieny
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business.industry ,Computer science ,Triple layer ,Ground ,General Engineering ,Structural engineering ,Impulse (physics) ,Grid ,Rod ,General Earth and Planetary Sciences ,business ,Electrical impedance ,Scale model ,General Environmental Science ,Voltage - Abstract
Impulse characteristics of grounding systems have a great influence on proper evaluation of substation equipment stresses from lightning overvoltages, protection and design points of view. The grounding grid impulse characteristics depend on: grid parameters and soil characteristics as well as on the impulse current shape, magnitude and discharge point. The addition of driven rods to the grid has an action on grounding grid impulse characteristics. This paper presents an experimental study for determining the impedance of grounding grid with and without driven rods. Tests are conducted on three scale models to simulate single-, double- and triple layer soils. Also, the impedance of grounding grid calculated mathematically from the generalized equations which matched the impedance, voltage and current wave shapes. The values of grounding grid impedances determined experimentally and mathematieally are compared. The com parison was closed together and satisfied.
- Published
- 2020
17. Triple-layer remote phosphor structure: a novel option for the enhancement of WLEDs’ color quality and luminous flux
- Author
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Tran Thanh Trang, Nguyen Doan Quoc Anh, My Hanh Nguyen Thi, and Phung Ton That
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Materials science ,Triple layer ,color rendering index ,Phosphor ,luminous efficacy ,02 engineering and technology ,01 natural sciences ,010309 optics ,dual-layer phosphor ,0103 physical sciences ,General Materials Science ,Materials of engineering and construction. Mechanics of materials ,miescattering theory ,triple-layer phosphor ,Color quality ,remote-phosphor ,business.industry ,Mechanical Engineering ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,Luminous flux ,Mechanics of Materials ,TA401-492 ,Optoelectronics ,0210 nano-technology ,business - Abstract
The remote phosphor as a lighting structure has outstanding luminous efficiency compared to other options, such as conformal or in-cup. However, the lack of uniformity in distributed color has prevented remote phosphor from wider development. The answer to the chromatic performance enhancement that has been suggested by numerous researchers is the multi-layer configuration with two or three different types of chromatic phosphor. The research purpose is to select the best configuration for multi-chip white LEDs (WLEDs) to achieve optimal results in color quality scale (CQS), color rendering index (CRI), light output and color homogeneity. WLEDs mentioned in this paper have two distinct color temperatures, 6600 K and 7700 K. Experimental results show that the remote phosphor structure with three phosphor layers is superior in terms of color rendering, chromatic performance, and emitted light. The deviation of correlated color measured in this structure is also low, which means that the color uniformity is greatly enhanced in this multi-layer lighting structure. This result can be demonstrated by analyzing the scattering characteristics of the phosphoric layers using the Mie theory. The research findings have proven the effectiveness of the multi-phosphor configuration and can serve as a guideline to fabricate WLEDs with better performance.
- Published
- 2020
18. A Single-Center 5-Year Experience Using the Triple-Layer Technique for Surgical Repair of Nasal Septal Perforations
- Author
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Annakan V Navaratnam, Alfonso Luca Pendolino, Samit Unadkat, Premjit S Randhawa, and Andrews P
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Surgical repair ,medicine.medical_specialty ,Triple layer ,business.industry ,Nasal Septal Perforation ,Rhinoplasty ,Single Center ,Surgery ,Text mining ,medicine.anatomical_structure ,Nasal septum ,Humans ,Medicine ,business ,Nasal Septum - Published
- 2022
19. Measuring the thermal resistance of double and triple layer pneumatic cushions for textile architectures
- Author
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Alessandra Zanelli, Adriana Angelotti, Alessandro Rizzo, and Andrea Alongi
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Textile ,Materials science ,Triple layer ,free convection ,Thermal resistance ,0211 other engineering and technologies ,Mechanical engineering ,02 engineering and technology ,energy performance ,heat flow ,Multiple layer ,Thermal insulation ,021105 building & construction ,Architecture ,Hardware_INTEGRATEDCIRCUITS ,021108 energy ,pneumatic cushion ,thermal transmittance ,business.industry ,thermal resistance ,Energy performance ,Building and Construction ,General Business, Management and Accounting ,Thermal transmittance ,multilayered membrane skin ,measurement ,business ,Heat flow - Abstract
Lightweight architecture, implementing coated fabric and membrane materials, increasingly adopts multiple layer pneumatic cushions in order to guarantee adequate thermal insulation and better indoo...
- Published
- 2020
20. TCDS: A Time-Relevant Graph Based Topology Control in Triple-Layer Satellite Networks
- Author
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Yue Li, Zhihua Yang, Qinyu Zhang, and Ye Wang
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Backbone network ,Triple layer ,Computer science ,Topology control ,05 social sciences ,Graph based ,050801 communication & media studies ,020207 software engineering ,02 engineering and technology ,Topology ,Connected dominating set ,0508 media and communications ,Control and Systems Engineering ,0202 electrical engineering, electronic engineering, information engineering ,Graph (abstract data type) ,Granularity ,Electrical and Electronic Engineering ,Cluster analysis - Abstract
In a triple-layer satellite (TLS) network with GEO, MEO and LEO, maintaining connectivity of topology confronts the challenge of intermittent visibility due to periodically orbital motions of nodes. To address this issue, in this letter, we develop a time-relevant graph called as space-time graph (STG) model for depicting the topological structure with fine granularity, by taking into account time-domain and spatial-domain properties. With STG, a Time-evolving Connected Dominating Set (TCDS) algorithm is proposed to construct a backbone network for efficient topology control with high spatial and temporal accessibility of the triple-layer network. The simulation results demonstrate better efficiency of the proposed algorithm with respects to the average hop and connectivity probability, compared with time-evolving multi-layered clustering (TEMC) algorithm and single time-slot clustering (STC) algorithm.
- Published
- 2020
21. STUDY ON PREDICTION METHOD FOR INSULATION OF TRIPLE-LAYER WALL USING 'INCLUSIVE THERMAL CONDUCTIVITY' IN FIRE-RESISTANCE TEST
- Author
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Takafumi Shimizu, Masatomo Yoshida, and Kimie Yoshitani
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Environmental Engineering ,Materials science ,Thermal conductivity ,Triple layer ,Fire resistance ,Composite material - Published
- 2020
22. Microwelding of Leads to the Film Structures Working at Elevated Temperatures
- Author
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Pisarkiewicz, T., Habdank-Wojewodzki, T., Ciez, M., Harman, George, editor, and Mach, Pavel, editor
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- 1998
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23. A Triple Layer of Immiscible Solvents for NMR Sample Preparation: Enhanced Sensitivity and Reduced Deuterated Solvent
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Bikash Baishya and Atish Chandra
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Solvent ,Materials science ,Deuterium ,Triple layer ,Analytical chemistry ,Enhanced sensitivity ,Sample preparation ,General Chemistry ,Nuclear magnetic resonance spectroscopy - Published
- 2019
24. Adsorption of Metal Ions from Aqueous Solutions: Model Application
- Author
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Yiacoumi, Sotira, Tien, Chi, Yiacoumi, Sotira, and Tien, Chi
- Published
- 1995
- Full Text
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25. Triple-layer remote phosphor structure: a selection of the higher color quality and lumen efficiency for WLEDs
- Author
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Le Hung Tien and Phan Xuan Le
- Subjects
Dual-layer phosphor ,Triple-layer phosphor ,Control and Optimization ,Materials science ,Color quality ,Computer Networks and Communications ,Triple layer ,business.industry ,Phosphor ,Glass matrix ,Luminous efficacy ,Color rendering index ,Hardware and Architecture ,Control and Systems Engineering ,Computer Science (miscellaneous) ,Optoelectronics ,Electrical and Electronic Engineering ,business ,Instrumentation ,Information Systems ,Lumen (unit) ,Diode ,Remote-phosphor - Abstract
To enhance color quality of glass-based phosphor-converted white light-emitting diodes (pc-WLEDs) with multi-layer remote phosphor layer structures, two phosphors, green CdS:In and red ZnS:Te,Mn, are integrated into the glass matrix and applied to the dual-layer and triple-layer WLED packages. The attained results were examined with Mie-scattering theory and Lambert-Beer law. The dual-layer showed significant enhancement in color rendering index (CRI), in the range of approximate 80-90. Meanwhile, CRI in the triple-layer was lower and stayed around 66. In terms of color quality scale (CQS), a more overall color evaluating index, triple-layer structure helps the glass-based WLED achieve higher value than the dual-layer. The triple-layer is also beneficial to the luminous efficacy, according to the experimented results. Thus, the triple-layer structure can be used to strengthen the benefit of the glass matrix used in WLED products.
- Published
- 2021
26. Stable Triple-Layer Lubricated Pipeline Flow
- Author
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Sarah Hormozi, Ian Frigaard, and Parisa Sarmadi
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Shear rate ,Pipeline transport ,Materials science ,Petroleum engineering ,Triple layer ,Pipeline (computing) ,Flow (psychology) ,Lubrication - Abstract
Recently we have introduced a novel methodology for efficient transport of heavy oil via a triple-layer core-annular flow [1]. Pumping pressures are significantly reduced by concentrating high shear rates to a lubricating layer, while ideas from visco-plastic lubrication were used to eliminate interfacial instabilities. We purposefully position a shaped unyielded skin of a visco-plastic fluid between the transported oil and the lubricating fluid layer. The shaping of the skin layer allows for lubrication forces to develop and balance the density difference between the fluids. Here we show an explicit advantage of the proposed method. Essentially the method can give stable flows for a very wide range of fluid input ratio, although not all will produce the desired reduction in frictional pressure losses. Additionally, we use the extensional flow method derived in [2] to estimate the required yield stress to maintain the skin completely unyielded.
- Published
- 2021
27. Unmasking N95 for COVID-19 health-care workers in India
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Vivek Mishra, Aroop Mohanty, Hari S Joshi, Subodh Kumar, and Mrinal Prakash Barua
- Subjects
business.product_category ,Coronavirus disease 2019 (COVID-19) ,business.industry ,Triple layer ,surgical n95s respirator ,media_common.quotation_subject ,lcsh:R ,lcsh:Medicine ,Certification ,filtering facepiece respirator ,medicine.disease ,Counterfeit ,Face masks ,covid-19 ,Health care ,Commentary ,Medicine ,Quality (business) ,Medical emergency ,Respirator ,business ,media_common - Abstract
A general term N95 Mask has been widely used by all including the health care personnel. It has been use incorrectly by all and it should be replaced with the term filtering facepiece respirator. There are two types of respirators being used in the world. One is the industrial type whereas the other one is the medical surgical one. The medical surgical masks are an intermediate product between the industrial and the triple layer medical mask. Many other equivalent products like KN95 masks are also available in the market. There is an urgent need of certification because this is the only way quality face masks can be provided to the public in these difficult times of COVID-19. This is essential because of the entry of many counterfeit and uncertified respirators have entered the market.
- Published
- 2020
28. Label-free nanoparticle sensors based on a triple-layer-coated microsphere structure
- Author
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Fei Li, Bolin Cai, Keyi Wang, Mengyu Wang, Yu Yang, Sifan Zeng, and Xueying Jin
- Subjects
Materials science ,business.industry ,Triple layer ,Mechanical Engineering ,Nanoparticle ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,Cladding (fiber optics) ,01 natural sciences ,0104 chemical sciences ,Microsphere ,Resonator ,Wavelength ,Mechanics of Materials ,Optoelectronics ,General Materials Science ,0210 nano-technology ,business ,Biosensor ,Label free - Abstract
We present a design for a sensitive, label-free nanoparticle sensor based on triple-layer-coated microsphere resonators. The surfaces of the microsphere structure are coated with three layers that have high, low, and high refractive indexes from inside to outside, respectively. We theoretically and numerically investigate two cladding modes, we call the inner mode and outer mode. The resonance wavelengths of the two modes are used to detect the resonance wavelength shift caused by a single-nanoparticle. Numerical calculation suggests that if we change the thickness of the middle layer, the device offers another degree of freedom to obtain higher detection sensitivity. We build a model to accurately describe a nanoparticle close to the microsphere. The method for the sensors may promote the design of biosensing applications.
- Published
- 2019
29. Triple-layer Mesh Plasty for Re-recurrent Ventral Hernia in a Liver Transplant Patient: A Case Report
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G. N. Monti, Walter Santaniello, F. Calise, D. Pisaniello, O. Cuomo, and Antonio Ceriello
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Male ,Weakness ,medicine.medical_specialty ,Triple layer ,Recurrent ventral hernia ,Abdominal wall ,Postoperative Complications ,Recurrence ,medicine ,Humans ,Hernia ,Transplantation ,business.industry ,Prostheses and Implants ,Middle Aged ,Surgical Mesh ,medicine.disease ,Hernia, Ventral ,Liver Transplantation ,Surgery ,Liver transplant recipient ,surgical procedures, operative ,medicine.anatomical_structure ,Surgical mesh ,Transplant patient ,medicine.symptom ,business - Abstract
Ventral hernias often occur in transplanted patients because of weakness of the abdominal wall, poor muscle mass, and ascitis. In this report we describe the case of a re-recurrent ventral hernia seen emergently in a liver transplant recipient, who was treated using a singular 3-layer approach by placement of an intraperitoneal mesh, stressing technical aspects of the plasty as well as the importance of a sublay technique in the reinforcement of a previous prosthetic plasty.
- Published
- 2019
30. A Triple-Layer Encryption-Based Watermarking Technique for Improving Security of Medical Images
- Author
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Ahmed S. Salama, Mazhar B. Tayel, and M.A. Mokhtar
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business.industry ,Triple layer ,Computer science ,Health Informatics ,Radiology, Nuclear Medicine and imaging ,business ,Encryption ,Digital watermarking ,Computer hardware - Published
- 2019
31. Long-term oxidation behaviors of C/SiC composites with a SiC/UHTC/SiC three-layer coating in a wide temperature range
- Author
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Pang Shengyang, Hui-Ming Cheng, Sufang Tang, and Hu Chenglong
- Subjects
Materials science ,Triple layer ,020209 energy ,General Chemical Engineering ,02 engineering and technology ,General Chemistry ,Chemical vapor deposition ,Atmospheric temperature range ,engineering.material ,021001 nanoscience & nanotechnology ,Corrosion ,Coating ,visual_art ,0202 electrical engineering, electronic engineering, information engineering ,visual_art.visual_art_medium ,engineering ,General Materials Science ,Oxidation process ,Ceramic ,Composite material ,0210 nano-technology ,Layer (electronics) - Abstract
A SiC/UHTC/SiC triple layer was designed and coated on C/SiC composites by chemical vapor deposition and brushing-sintering techniques to achieve long-term oxidation protection in a wide temperature range. After exposure to 1100 °C and 1300 °C for 114 h, and 1500 °C for 68 h in air, the coated composites exhibited mass losses of only 0.36, 1.65 and 3.45 mg/cm2, respectively. The low mass loss rates can be attributed to the synergistic effects of the ZrB2-based ultra-high temperature ceramic (UHTC) and SiC layers. The oxidation process and protective mechanism at different temperatures were discussed in detail.
- Published
- 2019
32. Hollow Triple-Layer Puff-like HCs@Si@C Composites with High Structural Stability for High-Performance Lithium-Ion Battery
- Author
-
Xiaopeng Hao, Yongliang Shao, Yongzhong Wu, Hehe Jiang, Jianxing Shen, and Shouzhi Wang
- Subjects
Materials science ,Silicon ,Triple layer ,Energy Engineering and Power Technology ,chemistry.chemical_element ,Silicon anode ,Volume change ,Lithium-ion battery ,chemistry ,Structural stability ,Materials Chemistry ,Electrochemistry ,Chemical Engineering (miscellaneous) ,Electrical and Electronic Engineering ,Composite material - Abstract
Silicon anode materials with ultrahigh theoretic capacity of 4200 mAh g–1 exhibit an attractive prospect for lithium-ion batteries (LIBs). However, notably volume change (>300%) in the silicon latt...
- Published
- 2019
33. Performance Evaluation of a Triple Layer Electric Sieving Machine (TLESM)
- Author
-
Adedipe J.O, Aderemi A.M, O.O Abegunrin, Afolabi R.T, Olatunji B.T, and Oyewole O.O
- Subjects
Triple layer ,Specific function ,General Engineering ,medicine ,Food material ,medicine.symptom ,Network layer ,Composite material ,Layer (electronics) ,Weight gain ,Mathematics - Abstract
A multi-layer sieving machine is of multiplayer and highly efficient sieving machine that retains particles based on the difference in size. This study was carried out to evaluate the performance of a multi-layer electric sieving machine. The performance test of the machine was carried out in the Agricultural department farm of the Federal College of Forestry, Jericho Ibadan. The electrical sieving machine was used to carry out separation operations on a mixture of food crop materials at varying speeds. The machine passed the test of workability; it was able to perform the specific function of sieving and separating food materials of varying sizes. Mixed food materials were poured in the first layer of the mesh assembly and sieved. The time to completely separate the mixture into the three different layers was recorded and the respective weight of each layer was finally measured. Layer 1 had a mean weight gain of 0.42kg; layer 2 had a mean weight gain of 0.14 while layer 3 had a mean weight loss of 0.56kg when sieving was done for 5 minutes; at 7 minutes, Layer 1 had a mean weight gain of 0.1kg; layer 2 had a mean weight gain of 0.18 while layer 3 had a mean weight loss of 0.28kg, while at 10 minutes, the first layer had a mean weight gain of 0.06 kg, second layer also had mean weight gain of 0.02 while the third layer had a mean weight loss 0.08. The mean efficiency was highest at 99% in all the layers when sieving operation was carried out for 10 minutes and lowest at 96% for layer 3 when the machine ran for five (5) minutes. The effect of change in speed suggests that increment in sieving speed above 750rpm or below 300rpm gives a low efficiency.
- Published
- 2021
34. N95 respirator or triple layer surgical mask: Radiologist perspective
- Author
-
Sanjeev Misra and Binit Sureka
- Subjects
2019-20 coronavirus outbreak ,medicine.medical_specialty ,business.product_category ,Coronavirus disease 2019 (COVID-19) ,Triple layer ,business.industry ,Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) ,Perspective (graphical) ,R895-920 ,Surgical mask ,Medical physics. Medical radiology. Nuclear medicine ,Commentary ,Medicine ,Radiology, Nuclear Medicine and imaging ,Medical physics ,Respirator ,business - Published
- 2021
35. Postinfarction posterobasal ventricular septal defect closure with a triple-layer patch
- Author
-
Davide Pacini, Luca Botta, Antonio Loforte, Daniela Votano, and Antonino Costantino
- Subjects
Heart Septal Defects, Ventricular ,Male ,medicine.medical_specialty ,business.industry ,Triple layer ,Heart Ventricles ,Suture Techniques ,Thrombogenicity ,medicine.disease ,Ventriculotomy ,Cardiac apex ,Defect closure ,medicine.anatomical_structure ,Suture (anatomy) ,Internal medicine ,cardiovascular system ,Cardiology ,Medicine ,Pericardium ,Humans ,cardiovascular diseases ,Myocardial infarction ,business ,Aged - Abstract
We present the case of a 65-year-old patient who developed a large posterobasal ventricular septal defect resulting from an extensive acute myocardial infarction involving the inferior and basal septum and wall. We repaired the interventricular lesion by verticalizing the cardiac apex to perform a left posterobasal ventriculotomy. We removed a great part of the residual infarcted tissue, leaving the residual scar in place. Our technique first involved creating a double-layer patch comprising heterologous pericardium and a non-collagen-impregnated Sauvage Dacron patch, fixed with single pledgeted U-stitches from the right side of the anterior septum; then we applied a third layer of heterologous pericardium on the left side of the septum in order to have only a pericardial surface in contact with blood on both ventricular sides. A running suture was used to complete the procedure from the middle to the posterior rim of the ventricular septal defect. The final triple-layer patch allowed us to obtain a complete and durable closure of the defect. The subsequent closure of the left ventriculotomy was performed with a similar bilayer pericardium-Dacron patch (always leaving pericardium on the internal surface). This technique proved effective, guaranteeing resistance to suture stress, less risk of leakage, and reduced thrombogenicity.
- Published
- 2021
36. Triple-layer remote phosphor: An improved structure with higher color quality and luminous flux of white LEDs
- Author
-
Phan Xuan Le and Le Hung Tien
- Subjects
Color rendering index ,Luminous flux ,Materials science ,Color quality ,law ,Triple layer ,Analytical chemistry ,Phosphor ,Green-light ,Luminous efficacy ,Light-emitting diode ,law.invention - Abstract
This research suggests using triple-layer remote phosphor (TRP) to improve the color quality and luminous flux coming out of white LEDs (WLEDs). The TRP structure contains three different phosphor layers: beneath is the yellow phosphor YAG:Ce3+, a red phosphor LiInO2:Eu3+ above, and a green phosphor Zn2GeO4:Mn2+ in within. Controlling the red-light composition with a red phosphor layer LiInO2:Eu3+ leads to a higher color rendering index (CRI). Thus, increase the luminous efficacy (LE) of WLEDs using a green phosphor layer of CaLaB3O7:Ce3+,Mn2+ to monitor green light composition. Additionally, when increasing these two phosphor concentrations, the yellow concentration YAG:Ce3+ decreases to keep the average correlated color temperatures (ACCTs) within 6000K - 8500K. Besides CRI and LE, controlling green and red phosphor concentration is also a way to analyze the color quality scale (CQS). The study result shows that the higher the LiInO2:Eu3+ concentration, the greater the CRI value. However, CRI significantly reduces when increasing Zn2GeO4:Mn2+ concentration. Meanwhile, CQS can raise a substantial amount in the concentration range of 10%-14% LiInO2:Eu3+, flout LiInO2:Eu3+ concentration. Peculiarly, parallel with the improvement of CRI and CQS, LE also grows over 40% due to a decrease in backscattering light and added green light. This research may be valuable for manufactures for improving the color quality and luminous flux of WLEDs.
- Published
- 2021
37. Ultrasound Visualization of the Triple-Layer Sign of Lipohemarthrosis: Fat, Plasma, and Blood
- Author
-
Stephen Schaaf and Evan Berlin
- Subjects
medicine.medical_specialty ,Triple layer ,Adipose tissue ,Physical Therapy, Sports Therapy and Rehabilitation ,Knee Injuries ,Plasma ,Text mining ,Lipohemarthrosis ,Hemarthrosis ,medicine ,Humans ,Spinal Cord Injuries ,Ultrasonography, Interventional ,business.industry ,Rehabilitation ,Ultrasound ,Middle Aged ,Visualization ,Tibial Fractures ,Adipose Tissue ,Accidental Falls ,Female ,Radiology ,Ultrasonography ,business ,Sign (mathematics) ,Arthrocentesis - Published
- 2020
38. Improving color quality and luminous flux of white LED utilizing triple-layer remote phosphor structure
- Author
-
Nguyen Doan Quoc Anh and Nguyen Thi Phuong Loan
- Subjects
Materials science ,Color quality ,General Computer Science ,business.industry ,Triple layer ,Color rendering index ,Lambert-Beer law ,White LED ,Phosphor ,Luminous efficacy ,Luminous flux ,Quality (physics) ,Optoelectronics ,Electrical and Electronic Engineering ,business - Abstract
In this manuscript, we presented a research that enhance the performance of WLED using the multi-phosphor configuration. The phosphor layers in the research are separated from each other to achieved better luminous efficiency, however, it makes controlling color light quality more complex. Another issue is finding out the whether two layers of phosphor or three layers of phosphor is better in improving color quality. The research addressed this issue by analyzing the optical aspects of the respective WLEDs that employ these structure. The studied aspects are quality indicators such as luminous efficacy (LE), and color uniformity, color rendering index (CRI), color quality scale (CQS). The results of the experiments in this research, which come from the employment of WLEDs with 2 color temperatures 5600 K and 8500, suggest that WLED with three phosphor layers is better in CRI, CQS, LE. This type of phosphor structure also limits the color deviation significantly, thus, improves the color uniformity. This results is verifies with Mie theory, therefore, can be applied as reference or guideline for production of better WLEDs
- Published
- 2020
39. Stability of Human Immunodeficiency Virus 1 and 2 Antibody in Dried Blood Spot: A Pilot Study
- Author
-
Gunaraj Dhungana, Govinda Paudel, Parmandand Bhandari, Bhuvan Saud, Vikram Shrestha, and Sunita Masranggi
- Subjects
biology ,business.industry ,Triple layer ,viruses ,Human immunodeficiency virus (HIV) ,virus diseases ,General Medicine ,medicine.disease_cause ,Virology ,Virus ,Dried blood spot ,biology.protein ,Medicine ,Antibody ,business - Abstract
Human Immunodeficiency Virus (HIV) infection appears as a global burden to public health...
- Published
- 2020
40. Benefits of triple-layer remote phosphor structure in improving color quality and luminous flux of white LED
- Author
-
Phan Xuan Le, Nguyen Doan Quoc Anh, Thuc Minh Bui, and Dinh Hoang Bach
- Subjects
triple-layer phosphor ,Color quality ,Materials science ,mie-scattering theory remote-phosphor ,business.industry ,Triple layer ,color rendering index ,Phosphor ,luminous efficacy ,law.invention ,Luminous flux ,Color rendering index ,law ,dual-layer phosphor ,Optoelectronics ,Electrical and Electronic Engineering ,Luminous efficacy ,business ,Light-emitting diode - Abstract
Remote phosphor structure has higher luminous efficiency comparing to that of both conformal phosphor and in-cup phosphor structures. However, it is hard to control the color quality of remote phosphor structure, and this issue has become one of the most researchable objectives to many researchers in recent years. Up to now, there are two remote phosphor structures applied to improve the color quality, including dual-layer phosphor configuration and triple-layer phosphor configuration. The purpose of this research is to select one of those configurations to have multi-chip white LEDs (WLEDs) achieved the highest color rendering index (CRI), color quality scale (CQS), luminous efficacy (LE), and color uniformity. In this research, WLEDs with two correlated color temperatures (CCT) of 6600K and 7700K were applied. The obtained results showed that triple-layer phosphor configuration is more outstanding in CRI, CQS, and LE. Moreover, the color deviation has been significantly reduced, which means the color uniformity has been enhanced with the application of triple-layer phosphor configuration. These results can be proven by scattering properties of phosphor layers based on Mie theory. Thus, the researched results have become a reliable and valuable reference for manufacturing higher-quality WLEDs.
- Published
- 2019
41. A triple‐layer dual‐bandpass frequency selective surface of third order response with equivalent circuit analysis
- Author
-
Ayan Chatterjee and Susanta Kumar Parui
- Subjects
Split ring ,Materials science ,business.industry ,Triple layer ,Tunable metamaterials ,Equivalent circuit analysis ,Computer Graphics and Computer-Aided Design ,Computer Science Applications ,Dual (category theory) ,Third order ,Band-pass filter ,Optoelectronics ,Electrical and Electronic Engineering ,Wideband ,business - Published
- 2019
42. Triple-Layer Vascular Grafts Fabricated by Combined E-Jet 3D Printing and Electrospinning
- Author
-
Xiangkai Gao, Haoxiang Chen, Yongjun Tan, Chunyi Tong, Zhikai Tan, Jian Wang, and Ruiying Huang
- Subjects
Blood Platelets ,Scaffold ,Erythrocytes ,Materials science ,Triple layer ,Polyesters ,Biomedical Engineering ,3D printing ,02 engineering and technology ,010402 general chemistry ,Hemolysis ,01 natural sciences ,Rats, Sprague-Dawley ,Tissue engineering ,Tensile Strength ,Cell Adhesion ,Human Umbilical Vein Endothelial Cells ,Animals ,Humans ,Cell Proliferation ,Tissue Engineering ,Heparin ,business.industry ,021001 nanoscience & nanotechnology ,Electrospinning ,Blood Vessel Prosthesis ,0104 chemical sciences ,Printing, Three-Dimensional ,0210 nano-technology ,business ,Layer (electronics) ,Cell penetration ,Biomedical engineering ,Lumen (unit) - Abstract
Small-diameter tissue-engineered vascular grafts are urgently needed for clinic arterial substitute. To simulate the structures and functions of natural blood vessels, we designed a novel triple-layer poly(ε-caprolactone) (PCL) fibrous vascular graft by combining E-jet 3D printing and electrospinning techniques. The resultant vascular graft consisted of an interior layer comprising 3D-printed highly aligned strong fibers, a middle layer made by electrospun densely fibers, and an exterior structure composed of mixed fibers fabricated by co-electrospraying. The biocompatible triple-layer graft was used for in vivo implantation, and results demonstrated that the longitudinally-aligned fibers within the lumen of the graft could enhance the proliferation and migration of endothelial cells, while maintained good mechanical properties. The exterior layer provided a pathway that encouraged cells to migrate into the scaffold after implantation. This experimental graft overcame the limitations of conventionally electrospun vascular grafts of inadequate porosity and lowly cell penetration. The unique structure of the triple-layer vascular graft promoted cell growth and infiltration in vivo, thus provided an encouraging substitute for in situ tissue engineering.
- Published
- 2018
43. Bifidobacterium bifidum BB28 microencapsulated with ca-alginate: Survival under simulated gastrointestinal conditions and stability during storage
- Author
-
G.W. Shu, D.L. Ma, N. Xin, Y. Wang, H. Chen, and J.P. Meng
- Subjects
Bifidobacterium bifidum ,biology ,ved/biology ,Chemistry ,Triple layer ,ved/biology.organism_classification_rank.species ,food and beverages ,04 agricultural and veterinary sciences ,biology.organism_classification ,digestive system ,040401 food science ,fluids and secretions ,0404 agricultural biotechnology ,Viable count ,Population reduction ,Monolayer ,Food science ,Food Science ,Bifidobacterium - Abstract
The present study was to evaluate the survival rate of free and encapsulated Bifidobacterium bifidum BB28 under simulated gastrointestinal conditions and its stability during storage. Results showed that non-microencapsulated Bifidobacterium bifidum BB28 was more susceptible to simulated gastrointestinal conditions than microencapsulated bacteria. Microencapsulated Bifidobacterium BB28 exhibited a lower population reduction than free cells during exposure to simulated gastrointestinal conditions, the viable count of monolayer microcapsules, double layer microcapsules, and triple layer microcapsules decreased by nine magnitudes, four magnitudes, and one magnitude after 2 h, respectively. The enteric test showed that the microorganism cells were released from the monolayer, double layer, and triple layer microcapsules completely in 40 min. Moreover, the optimum storage times of free Bifidobacterium BB28, monolayer microcapsules, double layer microcapsules, and triple layer microcapsules were 21 days, 21 day...
- Published
- 2018
44. Assessment of on-farm storage of Bambara groundnut (Vigna subterranea) and roselle grains (Hibiscus sabdariffa) in Niger
- Author
-
Seyni Boureima, Jess Lowenberg-DeBoer, and Bokar Moussa
- Subjects
Crop ,Toxicology ,food ,Triple layer ,Hibiscus sabdariffa ,food and beverages ,Vigna subterranea ,food.food ,Mathematics ,Plastic bag - Abstract
The objective of this study was an assessment of on-farm storage practices for Bambara groundnut and roselle grains in Niger. It is based on a random sample of 164 farmers producing both crops in the Dosso and Maradi regions using a semi-structured questionnaire. Analysis of the data used Probit regression and budgeting. Fifty four percent of respondents use some type of potentially hermetic container for storage of Bambara groundnut and 46% use that type of container for roselle. Potentially, hermetic containers include metal drums, plastic jugs, and single, double and triple layer plastic bags. About 67% of the quantity of Bambara groundnut stored was in potentially hermetic containers and 58% of roselle. Triple layer Purdue Improved Crop Storage (PICS) bags were used mainly by Bambara groundnut farmers storing larger quantities. While only about 10% of the respondents reported storing Bambara groundnuts in PICS bags. The quantity stored by those respondents is quite large, so about 39% of the total quantity of Bambara groundnut stored by the respondents was stored in PICS bags. For roselle, PICS bags were used by 4% of respondents for only 3% of quantity stored. Profitability of using PICS bags for one or two years is comparable to that achieved with the common practice of storing in woven bags with insecticide. While PICS bags use does not increase profitability substantially compared to insecticide use, it does allow the producer to reduce pesticide exposure and the associated health risks. Key words: Adoption, Bambara groundnut, hermetic storage, profitability, roselle.
- Published
- 2018
45. Formation of triple–layer coronas between corundum and hornblende from the Lützow–Holm Complex at Akarui Point, East Antarctica
- Author
-
Takeshi Ikeda and Yuki Mori
- Subjects
010504 meteorology & atmospheric sciences ,Triple layer ,Mineralogy ,Geology ,Corundum ,East antarctica ,engineering.material ,Volume change ,010502 geochemistry & geophysics ,01 natural sciences ,Corona (optical phenomenon) ,Geophysics ,engineering ,Point (geometry) ,0105 earth and related environmental sciences ,Hornblende - Published
- 2018
46. Optical and Morphological Properties of Spin-Coated Triple Layer Anti-Reflection Films on Textured Silicon Substrates
- Author
-
Takehiro Mariko, Ryosuke Watanabe, and Yoji Saito
- Subjects
Materials science ,Silicon ,business.industry ,Triple layer ,020209 energy ,chemistry.chemical_element ,02 engineering and technology ,021001 nanoscience & nanotechnology ,Electronic, Optical and Magnetic Materials ,Reflection (mathematics) ,chemistry ,0202 electrical engineering, electronic engineering, information engineering ,Optoelectronics ,Electrical and Electronic Engineering ,0210 nano-technology ,business ,Sol-gel ,Spin-½ - Published
- 2018
47. Noise Reduction Using a Triple-layer Electrode in Conductive/Capacitive Hybrid Electrocardiogram Measurement
- Author
-
Ken Sasaki and Dairoku Muramatsu
- Subjects
Materials science ,business.industry ,Triple layer ,Capacitive sensing ,Noise reduction ,Electrode ,Optoelectronics ,General Materials Science ,business ,Instrumentation ,Electrical conductor - Published
- 2021
48. Triple-layer unclonable anti-counterfeiting enabled by huge-encoding capacity algorithm and artificial intelligence authentication
- Author
-
Guyue Hu, Jing Li, Jingyang Wang, Qiang Zhang, Bin Song, Mingyue Cui, Jinhua Wang, Runzhi Chen, Yao He, and Xin Jiang
- Subjects
Authentication ,Pixel ,Exploit ,Computer science ,business.industry ,Triple layer ,Biomedical Engineering ,Pharmaceutical Science ,Bioengineering ,Raman mapping ,Encryption ,Encoding (memory) ,General Materials Science ,Artificial intelligence ,Layer (object-oriented design) ,business ,Algorithm ,Biotechnology - Abstract
As a fundamental security problem, counterfeits pose a tremendous threat to public health and social economy. Herein, we exploit multi-functional nanoinks made of one-dimensional silicon-based nanohybrids for constructing fluorescent and plasmonic security tags. Of particular significance, the presented security solution exhibits triple-layer authentication model, simultaneously featuring the advantages of physical unclonable functions (PUFs), huge-encoding capacity algorithm and artificial intelligence technique. In macroscale, the multi-color fluorescence security signals are used as the first layer, which can be verified through portable smartphone. In the second security layer, the unclonable surface-enhanced Raman scattering (SERS) security signals at low-level magnification could be visualized using confocal Raman system. Taking advantages of coarse grained and quaternary encrypting of signals from Raman at each pixel, the encoding capacity reaches 6.43 × 1024082, which is much higher than the value (i.e., 3 × 1015051) ever reported. In the third layer, the aggregated SERS signals at high-level magnification Raman mapping produce unrepeatable patterns with shape-specific information. By further applying specifically artificial intelligence (AI), faint features of different SERS images are extracted and trained, allowing 98–100% of recognition accuracy after 1000 learning cycles. Such triple-layer security solution ensures the PUFs, huge encoding capacity and AI authentication simultaneously, providing newly high-performance platform of unbreakable anti-counterfeiting.
- Published
- 2021
49. Parameterization of adsorption onto minerals by Extended Triple Layer Model
- Author
-
Natsumi Takeda, Keisuke Fukushi, Akihiro Okuyama, and Shigeyori Kosugi
- Subjects
Standard state ,Adsorption ,Materials science ,Geochemistry and Petrology ,Ion adsorption ,Triple layer ,Ionic strength ,Environmental Chemistry ,Thermodynamics ,Surface charge ,Pollution ,Geochemical modeling ,Electrostatic interaction - Abstract
Adsorption is the most important geochemical process that regulates trace element concentrations in natural water. The behavior of solutes adsorbed onto mineral surfaces depends on conditions in the solution, including pH, ionic strength, and concentrations of competing components. Surface complexation modeling (SCM) is the commonly accepted way to model the effect of variable solution conditions on adsorption. Extended Triple Layer Model (ETLM) is a SCM for ion adsorption to minerals developed by Prof. Sverjensky group. It considers adsorption reaction on mineral surfaces that contain one type of amphoteric surface hydroxyl, in combination with a triple layer model for the electrostatic interaction. The amphoteric surface hydroxyl represents an average of the actual surface sites. The ETLM implements the site occupancy standard states for the activities of surface species, which enables the direct comparison of the adsorption constants. ETLM has the minimum complexity required to realistically represent adsorption processes with the least number of parameters. The ETLM can provide predictions of adsorption behavior and surface speciation that are consistent with independent spectroscopic observations. Nowadays, ETLM can be used in many conventional geochemical codes. Practical application of ETLM in geochemical modeling will require an expansion of the inter-consistent database for the adsorption of various solutes on minerals. This review describes the theoretical background and conventions needed to estimate inter-consistent ETLM parameters. We review the surface charge characteristics of minerals in general, the experimental acquisition of their surface charges, the theory and conventions associated with the modeling of surface charges in the ETLM, and the procedure used to parameterize them. The acquisition of adequate adsorption data, the theory needed to model solute adsorption, and the procedure for parameterizing adsorption are then described. Finally, we introduce the features of a newly developed program, ETL(MIN)2, that facilitates the application of the ETLM, including model parameterization.
- Published
- 2021
50. Post-Harvest Losses – Use of Triple Layer Plastic Bag – An Innovative Eco-Friendly Low Cost Approach to Mitigate the Problem in Developing Countries
- Author
-
Y. Swathi
- Subjects
0106 biological sciences ,010602 entomology ,Triple layer ,Cost approach ,Post-harvest losses (grains) ,Developing country ,Agricultural engineering ,Business ,01 natural sciences ,Environmentally friendly ,010606 plant biology & botany ,Plastic bag - Published
- 2017
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