21 results on '"Fredrick Kim"'
Search Results
2. Composition change-driven texturing and doping in solution-processed SnSe thermoelectric thin films
- Author
-
Seung Hwae Heo, Seungki Jo, Hyo Seok Kim, Garam Choi, Jae Yong Song, Jun-Yun Kang, No-Jin Park, Hyeong Woo Ban, Fredrick Kim, Hyewon Jeong, Jaemin Jung, Jaeyoung Jang, Won Bo Lee, Hosun Shin, and Jae Sung Son more...
- Subjects
Science - Abstract
Despite significant efforts to improve the thermoelectric properties of polycrystalline SnSe, precise control of texturing and doping is a challenge. Here, the authors report hole doped and highly textured SnSe thin films prepared by low cost, scalable solution processing. more...
- Published
- 2019
- Full Text
- View/download PDF
Catalog
3. High-performance shape-engineerable thermoelectric painting
- Author
-
Sung Hoon Park, Seungki Jo, Beomjin Kwon, Fredrick Kim, Hyeong Woo Ban, Ji Eun Lee, Da Hwi Gu, Se Hwa Lee, Younghun Hwang, Jin-Sang Kim, Dow-Bin Hyun, Sukbin Lee, Kyoung Jin Choi, Wook Jo, and Jae Sung Son more...
- Subjects
Science - Abstract
Thermoelectric devices are often rigid and do not adapt conformally to surfaces. Here, Park et al. prepare a Bi2Te3-based thermoelectric paint, containing a Sb2Te3chalcogenidometalate additive, that can be paint-brushed onto curved surfaces and form thermoelectric modules with good efficiencies. more...
- Published
- 2016
- Full Text
- View/download PDF
4. Direct ink writing of three-dimensional thermoelectric microarchitectures
- Author
-
Sangjoon Ahn, Gyeonghun Kim, Soo-Ho Jung, Jung-Soo Lee, Jae Sung Son, Fredrick Kim, Kyung-Tae Kim, Hyejin Ju, Seong Eun Yang, Seungjun Choo, Suntae Kim, Han Gi Chae, and Chaenyung Cha
- Subjects
Materials science ,Inkwell ,business.industry ,3D printing ,Electronic, Optical and Magnetic Materials ,Thermoelectric effect ,Optoelectronics ,Particle ,Figure of merit ,Electrical and Electronic Engineering ,business ,Instrumentation ,Microscale chemistry ,Power density ,Microfabrication - Abstract
Microthermoelectric modules can be used as energy harvesters, active coolers and thermal sensors in integrated systems. However, manufacturing such modules with traditional microfabrication processes is costly and produces only two-dimensional thermoelectric films, which limit the formation of high-temperature gradients and thus the amount of power generated. Here we show that microscale three-dimensional thermoelectric architectures can be fabricated through the direct writing of particle-based thermoelectric inks. Using size control and surface oxidation, the characteristics of (Bi,Sb)2(Te,Se)3-based particle inks are engineered to create colloidal inks with high viscoelasticity and without organic binders, and the inks are directly written into complex architectures using a 3D printing process. The resulting structures exhibit high thermoelectric figures of merit of 1.0 (p type) and 0.5 (n type), which are comparable to those of bulk ingots. Microthermoelectric generators made from three-dimensionally written vertical filaments exhibit large temperature gradients and a power density of 479.0 μW cm–2. Microscale three-dimensional thermoelectric architectures can be fabricated through the direct writing of particle-based thermoelectric inks and used to create microthermoelectric generators that exhibit a power density of 479.0 μW cm–2. more...
- Published
- 2021
- Full Text
- View/download PDF
5. Skin care habits of patients with eczema at Kiambu Level 5 Hospital, Kiambu county, Kenya: A retrospective cross-sectional studyCapsule Summary
- Author
-
Winnie Njenga, MBChB, MSc, Magoma Mwancha-Kwasa, MBChB, MPH, Kinara Fossa, MSc, Prabhjot Kaur Juttla, BSc, Fredrick Kimani, BSc, Winfred Mwikya, Dip, Francis Makokha, PhD, and Hannah Wanyika, MBChB, PhD more...
- Subjects
eczema ,geospatial mapping ,Kenya ,prevalence ,skincare ,Dermatology ,RL1-803 - Abstract
Background: There is a dearth of data on eczema from the African continent despite the purported increasing burden. Objectives: To describe the prevalence of eczema at Kiambu Level 5 Hospital and patient skincare. Methods: A descriptive retrospective cross-sectional research design was performed describing the period between 2016 and 2020. Data analysis was done using STATA Version 13. Geospatial mapping of patient residence was also conducted. Results: Eczema was the most common skin condition diagnosed with a prevalence of 25.5%. Majority of the patients favored the use of non-conventional products such as bar soap and milking jelly as routine skincare products. Geospatial mapping demonstrated a higher prevalence of eczema in the urban areas and also revealed access to a specialist as a contributor to health-seeking behavior. Limitations: Subtypes of eczema were not described and this data only reflects 1 facility serving an entire county. Conclusion: The prevalence of eczema in Kiambu Level 5 Hospital mirrors the increasing global burden of eczema. Urban environments have a higher density of eczema in Kiambu. More research is needed to decipher the impact of the preferred non-conventional skin care products on eczema. more...
- Published
- 2024
- Full Text
- View/download PDF
6. Triboelectric Charge-Driven Enhancement of the Output Voltage of BiSbTe-Based Thermoelectric Generators
- Author
-
Jae Won Lee, Jae Sung Son, Sun-Woo Kim, Jeong Min Baik, Yongchul Kim, Geunsik Lee, U Jeong Yang, and Fredrick Kim
- Subjects
Materials science ,Renewable Energy, Sustainability and the Environment ,business.industry ,Energy Engineering and Power Technology ,Hardware_PERFORMANCEANDRELIABILITY ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,0104 chemical sciences ,Fuel Technology ,Thermoelectric generator ,Hardware_GENERAL ,Chemistry (miscellaneous) ,Dielectric layer ,Component (UML) ,Hardware_INTEGRATEDCIRCUITS ,Materials Chemistry ,Key (cryptography) ,Optoelectronics ,0210 nano-technology ,business ,Triboelectric effect ,Voltage - Abstract
A new approach to increasing the output voltage of a thermoelectric generator that does not involve material modification is demonstrated. The key component of the device is a dielectric layer and ... more...
- Published
- 2021
- Full Text
- View/download PDF
7. Thermoelectrics
- Author
-
Fredrick Kim, Seungjun Choo, and Jae Sung Son
- Published
- 2021
- Full Text
- View/download PDF
8. Soluble Telluride-Based Molecular Precursor for Solution-Processed High-Performance Thermoelectrics
- Author
-
Inseon Oh, Soyoung Cho, Jae Sung Son, Seongheon Baek, Jung-Woo Yoo, Seungjun Choo, Seungki Jo, Bong-Seo Kim, Jae Yong Song, Fredrick Kim, Hyewon Jeong, Sun Hwa Park, Da Hwi Gu, Hyeong Woo Ban, Jin Sang Kim, Hosun Shin, Seung Hwae Heo, Seungwoo Song, and Ji Eun Lee more...
- Subjects
Materials science ,business.industry ,Energy Engineering and Power Technology ,Nanotechnology ,Molecular precursor ,Thermoelectric materials ,Solution processed ,chemistry.chemical_compound ,chemistry ,Telluride ,Thermoelectric effect ,Materials Chemistry ,Electrochemistry ,Chemical Engineering (miscellaneous) ,Electrical and Electronic Engineering ,Thin film ,business ,Solution process ,Wearable technology - Abstract
The recent interest in wearable electronics suggests flexible thermoelectrics as candidates for the power supply. Herein, we report a solution process to fabricate flexible Sb2Te3 thermoelectric th... more...
- Published
- 2019
- Full Text
- View/download PDF
9. Controlled Grafting of Colloidal Nanoparticles on Graphene through Tailored Electrostatic Interaction
- Author
-
Hyewon Jeong, Han Kim, Hyeong Woo Ban, Yong-Ho Choa, Sangmin Park, Joonsik Lee, Seongheon Baek, Byung Mun Jung, Jae Sung Son, Jinu Kim, Da Hwi Gu, Ki Hyeon Kim, and Fredrick Kim
- Subjects
Materials science ,Graphene ,business.industry ,Composite number ,Nanoparticle ,Nanotechnology ,02 engineering and technology ,Conjugated system ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Electrochemistry ,Electrostatics ,01 natural sciences ,0104 chemical sciences ,law.invention ,Semiconductor ,law ,General Materials Science ,Grain boundary ,0210 nano-technology ,business - Abstract
Nanoparticle/graphene hybrid composites have been of great interest in various disciplines due to their unique synergistic physicochemical properties. In this study, we report a facile and generalized synthesis method for preparing nanoparticle/exfoliated graphene (EG) composites by tailored electrostatic interactions. EG was synthesized by an electrochemical method, which produced selectively oxidized graphene sheets at the edges and grain boundaries. These EG sheets were further conjugated with polyethyleneimine to provide positive charges at the edges. The primary organic ligands of the colloidal nanoparticles were exchanged with Cl- or MoS42- anions, generating negatively charged colloidal nanoparticles in polar solvents. By simple electrostatic interactions between the EG and nanoparticles in a solution, nanoparticles were controllably assembled at the edges of the EG. Furthermore, the generality of this process was verified for a wide range of nanoparticles, such as semiconductors, metals, and magnets, on the EG. As a model application, designed composites with size-controlled FeCo nanoparticle/EG were utilized as electromagnetic interference countermeasure materials that showed a size-dependent shift of the frequency ranges on the electromagnetic absorption properties. The current generalized process will offer great potential for the large-scale production of well-designed graphene nanocomposites for electronic and energy applications. more...
- Published
- 2019
- Full Text
- View/download PDF
10. Rheological design of 3D printable all-inorganic inks using BiSbTe-based thermoelectric materials
- Author
-
Han Gi Chae, Youngho Eom, Jae Sung Son, Fredrick Kim, and Seong Eun Yang
- Subjects
Thixotropy ,Materials science ,010304 chemical physics ,Mechanical Engineering ,Dynamic mechanical analysis ,Condensed Matter Physics ,01 natural sciences ,Viscoelasticity ,Stress (mechanics) ,Rheology ,Mechanics of Materials ,0103 physical sciences ,Dynamic modulus ,General Materials Science ,Deformation (engineering) ,Composite material ,010306 general physics ,Elastic modulus - Abstract
In order to achieve high-quality 3D printing of inorganic materials, a thorough evaluation of appropriate rheological characteristics and methodologies for formulating all-inorganic inks is required. We recently reported all-inorganic inks using BiSbTe-based thermoelectric particles coupled with a chalcogenidometallate (ChaM) inorganic binder. In the current study, we analyzed the rheological behavior of the all-inorganic inks to assess printability and 3D structural retention with respect to the ChaM content. The stress sweep and three-interval thixotropy test (3ITT) were conducted to mimic a 3D printing and interpret the flow behavior under nonlinear viscoelastic region. The binder-free inks showed a sharp overshoot of the loss modulus (G″) followed by the fluctuation of both the storage modulus G′ and G″ in the stress range of 10–50 Pa. In addition, the inks developed stronger colloidal structure than the initial state after the 3ITT, resulting in the non-uniform jetting. The nonlinear flow of the inks became stable by incorporating ChaM. However, the excessive ChaM (37.5 wt. %) brought about stress-induced structure regeneration analogous to the binder-free inks. The 3D structure integrity was interpreted by yield stress and solid-like characteristics based on the frequency sweep results after undergoing deformation. Poor printability from the 12.5 wt. % ChaM-containing ink was correlated to low yield stress (2 Pa) and a high slope of the G′ curve. However, the 25 wt. % ChaM-containing ink gave a high yield stress of 48 Pa and a low G′ curve slope of 0.2 even after nonlinear deformation, resulting in high 3D shape retention and printability.In order to achieve high-quality 3D printing of inorganic materials, a thorough evaluation of appropriate rheological characteristics and methodologies for formulating all-inorganic inks is required. We recently reported all-inorganic inks using BiSbTe-based thermoelectric particles coupled with a chalcogenidometallate (ChaM) inorganic binder. In the current study, we analyzed the rheological behavior of the all-inorganic inks to assess printability and 3D structural retention with respect to the ChaM content. The stress sweep and three-interval thixotropy test (3ITT) were conducted to mimic a 3D printing and interpret the flow behavior under nonlinear viscoelastic region. The binder-free inks showed a sharp overshoot of the loss modulus (G″) followed by the fluctuation of both the storage modulus G′ and G″ in the stress range of 10–50 Pa. In addition, the inks developed stronger colloidal structure than the initial state after the 3ITT, resulting in the non-uniform jetting. The nonlinear flow of the inks... more...
- Published
- 2019
- Full Text
- View/download PDF
11. Archeologische opgraving Antwerpen, N101 Scheldelaan, Zone 4
- Author
-
Fredrick, Kim, Creutz, Mike, and Borre, Jeroen Vanden
- Abstract
Dit rapport werd ingediend bij het agentschap samen met een aantal afzonderlijke digitale bijlagen. Een aantal van deze bijlagen zijn niet inbegrepen in dit pdf document en zijn niet online beschikbaar. Sommige bijlagen (grondplannen, fotos, spoorbeschrijvingen, enz.) kunnen van belang zijn voor een betere lezing en interpretatie van dit rapport. Indien u deze bijlagen wenst te raadplegen kan u daarvoor contact opnemen met: bib.oe@vlaanderen.be more...
- Published
- 2021
12. Cu
- Author
-
Seungjun, Choo, Faizan, Ejaz, Hyejin, Ju, Fredrick, Kim, Jungsoo, Lee, Seong Eun, Yang, Gyeonghun, Kim, Hangeul, Kim, Seungki, Jo, Seongheon, Baek, Soyoung, Cho, Keonkuk, Kim, Ju-Young, Kim, Sangjoon, Ahn, Han Gi, Chae, Beomjin, Kwon, and Jae Sung, Son more...
- Subjects
Thermoelectrics ,Thermoelectric devices and materials ,Article - Abstract
Thermoelectric power generation offers a promising way to recover waste heat. The geometrical design of thermoelectric legs in modules is important to ensure sustainable power generation but cannot be easily achieved by traditional fabrication processes. Herein, we propose the design of cellular thermoelectric architectures for efficient and durable power generation, realized by the extrusion-based 3D printing process of Cu2Se thermoelectric materials. We design the optimum aspect ratio of a cuboid thermoelectric leg to maximize the power output and extend this design to the mechanically stiff cellular architectures of hollow hexagonal column- and honeycomb-based thermoelectric legs. Moreover, we develop organic binder-free Cu2Se-based 3D-printing inks with desirable viscoelasticity, tailored with an additive of inorganic Se82− polyanion, fabricating the designed topologies. The computational simulation and experimental measurement demonstrate the superior power output and mechanical stiffness of the proposed cellular thermoelectric architectures to other designs, unveiling the importance of topological designs of thermoelectric legs toward higher power and longer durability., The geometrical design of thermoelectric legs in modules is key for sustainable power generation but can be hardly achieved by traditional fabrication process. Here, the authors develop an extrusion-based 3D printing process of Cu2Se thermoelectric materials for efficient power generation. more...
- Published
- 2021
13. Direct ink writing of 3D thermoelectric architectures for fabrication of micro power generators
- Author
-
Chaenyung Cha, Kyung-Tae Kim, Gyeonghun Kim, Fredrick Kim, Jung-Soo Lee, Suntae Kim, Soo-Ho Jung, Han Gi Chae, Seungjun Choo, Jae Sung Son, Sangjoon Ahn, Hyejin Ju, and Seong Eun Yang
- Subjects
Fabrication ,Electricity generation ,Materials science ,Inkwell ,Thermoelectric effect ,Engineering physics - Abstract
Micro-thermoelectric modules can be used to develop unique components such as energy harvesters, active coolers, and thermal sensors in various integrated systems. However, the manufacturing of these modules still relies on costly traditional micro-fabrication processes, producing only two-dimensional (2D) thermoelectric films. This limitation severely constrains temperature gradient formation across thermoelectric films, and hence, the sufficient amount of power required to run integrated systems is not generated. Herein, we present the direct ink writing of micro-scale three-dimensional (3D) thermoelectric architectures for fabricating high-performance micro-thermoelectric generators. The characteristics of (Bi, Sb)2(Te, Se)3-based particles were precisely engineered such that the colloidal inks achieved outstanding viscoelasticity, thereby facilitating the creation of complex 3D architectures having high thermoelectric figure-of-merits of 1.1 (p-type) and 0.5 (n-type). Micro-thermoelectric generators made of 3D-written vertical filaments exhibited large temperature gradients and a good resulting power density, opening an avenue for the cost-effective and rapid manufacturing of integrated micro-thermoelectric modules. more...
- Published
- 2021
- Full Text
- View/download PDF
14. 3D printing of shape-conformable thermoelectric materials using all-inorganic Bi2Te3-based inks
- Author
-
Bong Seo Kim, William P. King, Fredrick Kim, Kyung-Tae Kim, Han Gi Chae, Ji Eun Lee, Hye Jin Im, Min Ho Lee, Beomjin Kwon, Youngho Eom, Jae Sung Son, Tae Sik Min, Sangmin Park, Seungki Jo, and Sung Hoon Park more...
- Subjects
Materials science ,Renewable Energy, Sustainability and the Environment ,business.industry ,Energy Engineering and Power Technology ,3D printing ,02 engineering and technology ,Conformable matrix ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Thermoelectric materials ,01 natural sciences ,0104 chemical sciences ,Electronic, Optical and Magnetic Materials ,Waste heat recovery unit ,Fuel Technology ,Electricity generation ,Thermoelectric generator ,Waste heat ,Thermoelectric effect ,Composite material ,0210 nano-technology ,business - Abstract
Thermoelectric energy conversion offers a unique solution for generating electricity from waste heat. However, despite recent improvements in the efficiency of thermoelectric materials, the widespread application of thermoelectric generators has been hampered by challenges in fabricating thermoelectric materials with appropriate dimensions to perfectly fit heat sources. Herein, we report an extrusion-based three-dimensional printing method to produce thermoelectric materials with geometries suitable for heat sources. All-inorganic viscoelastic inks were synthesized using Sb2Te3 chalcogenidometallate ions as inorganic binders for Bi2Te3-based particles. Three-dimensional printed materials with various geometries showed homogenous thermoelectric properties, and their dimensionless figure-of-merit values of 0.9 (p-type) and 0.6 (n-type) were comparable to the bulk values. Conformal cylindrical thermoelectric generators made of 3D-printed half rings mounted on an alumina pipe were studied both experimentally and computationally. Simulations show that the power output of the conformal, shape-optimized generator is higher than that of conventional planar generators. Three-dimensional printing is changing the way we manufacture objects. Here, Kim et al. develop inks of inorganic thermoelectric materials to 3D print the legs of conformable thermoelectric generators, allowing waste heat recovery from hot water pipes. more...
- Published
- 2018
- Full Text
- View/download PDF
15. Wearable solar thermoelectric generator driven by unprecedentedly high temperature difference
- Author
-
Sung Bum Kang, Yeon Soo Jung, Fredrick Kim, Kyoung Jin Choi, Myeong Hoon Jeong, Dea Han Jeong, Jin Sang Kim, Jeong Min Baik, Jae Sung Son, and Ki-Suk Lee
- Subjects
Thermoelectric cooling ,Materials science ,Inkwell ,Renewable Energy, Sustainability and the Environment ,business.industry ,Sintering ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,0104 chemical sciences ,Thermoelectric generator ,Thermoelectric effect ,Optoelectronics ,General Materials Science ,Electrical and Electronic Engineering ,0210 nano-technology ,Absorption (electromagnetic radiation) ,business ,Layer (electronics) ,Voltage - Abstract
Converting body heat into electricity using flexible thermoelectric generators can be useful for self-powered wearable electronic devices. However, the temperature difference that can be obtained by body heat is insufficient, which limits its practical applications. In this study, we present a wearable solar thermoelectric generator driven by a significantly high temperature difference created by introducing a local solar absorber and thermoelectric legs on a polyimide substrate. The solar absorber is a five-period Ti/MgF2 superlattice, in which the structure and thickness of each layer was designed for optimal absorption of sunlight. The thermoelectric legs were prepared by dispenser printing with an ink consisting of mechanically alloyed BiTe-based powders and an Sb2Te3-based sintering additive dispersed in glycerol. Thermoelectric p- and n-type legs have electrical conductivities of ~ 25,000 S m−1 with Seebeck coefficients of 166.37 and −116.38 μV K−1, respectively. When exposed to sunlight, a wearable solar thermoelectric generator comprising 10 pairs of p-n legs has an open-circuit voltage of 55.15 mV and an output power of 4.44 μW. The temperature difference is as high as 20.9 °C, which is much higher than the typical temperature differences of 1.5–4.1 °C of wearable thermoelectric generators driven by body heat. The wearable solar thermoelectric generators have been demonstrated on various surfaces exposed to sunlight, such as clothes or windows. more...
- Published
- 2017
- Full Text
- View/download PDF
16. Thermoelectric Generators: Doping‐Induced Viscoelasticity in PbTe Thermoelectric Inks for 3D Printing of Power‐Generating Tubes (Adv. Energy Mater. 20/2021)
- Author
-
Jung-Soo Lee, Jeongin Jang, Seong Eun Yang, Sangjoon Ahn, Ji Eun Lee, Jae Sung Son, Jaehyung Hong, Hyejin Ju, Seungjun Choo, Gyeonghun Kim, Da Hwi Gu, Han Gi Chae, Sung Youb Kim, and Fredrick Kim
- Subjects
Materials science ,Renewable Energy, Sustainability and the Environment ,business.industry ,Doping ,3D printing ,Thermoelectric materials ,Engineering physics ,Viscoelasticity ,Power (physics) ,Electricity generation ,Thermoelectric generator ,Thermoelectric effect ,General Materials Science ,business - Published
- 2021
- Full Text
- View/download PDF
17. Doping‐Induced Viscoelasticity in PbTe Thermoelectric Inks for 3D Printing of Power‐Generating Tubes
- Author
-
Ji Eun Lee, Jae Sung Son, Jaehyung Hong, Gyeonghun Kim, Jeongin Jang, Seong Eun Yang, Jung-Soo Lee, Fredrick Kim, Han Gi Chae, Da Hwi Gu, Sangjoon Ahn, Sung Youb Kim, Hyejin Ju, and Seungjun Choo
- Subjects
Electricity generation ,Materials science ,Renewable Energy, Sustainability and the Environment ,business.industry ,Thermoelectric effect ,Doping ,Optoelectronics ,3D printing ,General Materials Science ,business ,Thermoelectric materials ,Viscoelasticity ,Power (physics) - Published
- 2021
- Full Text
- View/download PDF
18. Composition-segmented BiSbTe thermoelectric generator fabricated by multimaterial 3D printing
- Author
-
Gyeonghun Kim, Han Gi Chae, Hyejin Ju, Gi Seung Lee, Sangjoon Ahn, Fredrick Kim, Seungjun Choo, Seong Eun Yang, Jung-Soo Lee, Faizan Ejaz, Jae Sung Son, Kyung Tae Kim, Beomjin Kwon, and Soo ho Jung
- Subjects
Fabrication ,Materials science ,Renewable Energy, Sustainability and the Environment ,business.industry ,Energy conversion efficiency ,3D printing ,02 engineering and technology ,Atmospheric temperature range ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Thermoelectric materials ,01 natural sciences ,0104 chemical sciences ,Temperature gradient ,Thermoelectric generator ,Compatibility (mechanics) ,Optoelectronics ,General Materials Science ,Electrical and Electronic Engineering ,0210 nano-technology ,business - Abstract
Segmented thermoelectric generators (TEGs) comprising multiple TE elements can operate over a large thermal gradient without inherent conversion efficiency (ZT) losses of materials. However, despite excellent theoretical efficiencies, the performance of actual segmented TEGs are critically affected by several challenges related to material incompatibility and limited design flexibility in conventional fabrication processes. Herein, we report the multi-material 3D printing of composition-segmented BiSbTe materials by the sequential deposition of all-inorganic viscoelastic TE inks containing BixSb2-xTe3 particles, tailored with Sb2Te42− chalcogenidometallate binders. The peak ZTs of the 3D-printed materials controllably shifted from room temperature to 250 °C by composition engineering of BixSb2-xTe3 particles. We fabricated the optimally designed TEG comprising the 3D-printed, composition-segmented tri-block Bi0.55Sb1.45Te3/Bi0.5Sb1.5Te3/Bi0.35Sb1.65Te3 TE leg, which extends the peak ZTs and satisfies full compatibility across the entire temperature range, realizing a record-high efficiency of 8.7% under the temperature difference of 236 °C. Our approach offers a promising strategy to optimize segmented TEGs. more...
- Published
- 2021
- Full Text
- View/download PDF
19. Archeologische prospectie met ingreep in de bodem Roeselare - Honzebroekstraat
- Author
-
Demoen, David and Fredrick, Kim
- Abstract
Dit rapport werd ingediend bij het agentschap samen met een aantal afzonderlijke digitale bijlagen. Een aantal van deze bijlagen zijn niet inbegrepen in dit pdf document en zijn niet online beschikbaar. Sommige bijlagen (grondplannen, fotos, spoorbeschrijvingen, enz.) kunnen van belang zijn voor een betere lezing en interpretatie van dit rapport. Indien u deze bijlagen wenst te raadplegen kan u daarvoor contact opnemen met: bib.oe@vlaanderen.be more...
- Published
- 2017
20. Archeologische prospectie met ingreep in de bodem Jabbeke - Varsenareweg
- Author
-
Fredrick, Kim
- Abstract
Dit rapport werd ingediend bij het agentschap samen met een aantal afzonderlijke digitale bijlagen. Een aantal van deze bijlagen zijn niet inbegrepen in dit pdf document en zijn niet online beschikbaar. Sommige bijlagen (grondplannen, fotos, spoorbeschrijvingen, enz.) kunnen van belang zijn voor een betere lezing en interpretatie van dit rapport. Indien u deze bijlagen wenst te raadplegen kan u daarvoor contact opnemen met: bib.oe@vlaanderen.be more...
- Published
- 2017
21. Ink Processing for Thermoelectric Materials and Power‐Generating Devices
- Author
-
Fredrick Kim, Seungki Jo, Seung Hwae Heo, Seungjun Choo, and Jae Sung Son
- Subjects
Materials science ,Inkwell ,business.industry ,Mechanical Engineering ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Thermoelectric materials ,01 natural sciences ,0104 chemical sciences ,Renewable energy ,Power (physics) ,Electricity generation ,Mechanics of Materials ,Fabrication methods ,Waste heat ,Thermoelectric effect ,General Materials Science ,0210 nano-technology ,business ,Process engineering - Abstract
The growing concern over the depletion of hydrocarbon resources, and the adverse environmental effects associated with their use, has increased the demand for renewable energy sources. Thermoelectric (TE) power generation from waste heat has emerged as a renewable energy source that does not generate any pollutants. Recently, ink-based processing for the preparation of TE materials has attracted tremendous attention because of the simplicity in design of power generators and the possibility of cost-effective manufacturing. In this progress report, recent advances in the development of TE inks, processing techniques, and ink-fabricated devices are reviewed. A summary of typical formulations of TE materials as inks is included, as well as a discussion on various ink-based fabrication methods, with several examples of newly designed devices fabricated using these techniques. Finally, the prospects of this field with respect to the industrialization of TE power generation technology are presented. more...
- Published
- 2018
- Full Text
- View/download PDF
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.