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The numerical manifold method (NMM) has been applied successfully to a wide variety of problems, including time-independent exterior problems, where problem domains are unbounded. However, of the utmost interest and significance is the analysis of wave propagation in unbounded domains, which is still an open issue because it is far more difficult than time-independent exterior problems. This study aims to fill partly this gap from the prospective of NMM. A new type of infinite patches and the local approximations are designed to construct the Galerkin approximation that satisfies the asymptotic behavior of waves at infinite. Different from the infinite element technique in the finite element method (FEM), where the shape functions are required to satisfy not only the continuity between finite and infinite elements but also the attenuation behavior of solution while approaching infinite, the NMM is demonstrated more straightforward and elegant in the construction of the Galerkin approximation. Some examples in propagation of elastic wave and surface water wave are investigated to verify the accuracy and applicability of the proposed method. [ABSTRACT FROM AUTHOR]

A recent study from Dalian Maritime University in China provides a comprehensive review of micromixers, focusing on fundamental principles, innovative designs, and multidisciplinary applications. The research covers passive and active mixing mechanisms, different design structures, and driving modes for efficient mixing. The study aims to serve as a valuable reference for further research and application of micromixers in various fields such as biomedicine, chemical analysis, environmental monitoring, and new energy. [Extracted from the article]

Researchers Hartog and Peterson have submitted a patent application for a configurable computer interface with adaptive haptic input response. The invention aims to revolutionize computer interfaces by incorporating touch-sensitive input, haptic feedback, and customizable layouts to enhance user experience. This patent application reflects a cultural shift in thinking about computer interfaces and offers innovative solutions to meet evolving technological needs. [Extracted from the article]

A recent report from Shizuoka University discusses research findings on heart disease, emphasizing the importance of early detection and monitoring of lipid status for individuals at risk of cardiovascular disease. The study developed a point-of-care testing approach for apolipoprotein B (ApoB) using a shear horizontal surface acoustic wave (SH-SAW) platform to assess heart disease risk. Results showed that both almond and oat milk intervention and statin treatment significantly reduced ApoB levels, suggesting the potential value of the SH-SAW POCT device for monitoring cardiovascular disease risk during routine follow-up visits. [Extracted from the article]

Researchers at Chonnam National University in Gwangju, South Korea, have developed a new method for separating bacteria from platelets using acoustofluidic technology. This method, based on tilted-angle standing surface acoustic waves, allows for the label-free separation of microscale objects of similar sizes based on compressibility. The research demonstrated successful separation of Escherichia coli from platelets with high purity and recovery rates, offering a promising approach for investigating bacterial infectious diseases. The study has been peer-reviewed and provides valuable insights into microfluidic applications in microbiology and biomedicine. [Extracted from the article]

A patent has been issued for a system that can analyze analytes in complex fluids like whole blood without the need for centrifugation or filtering. The system uses microfluidics and acoustic waves to separate particles, such as red blood cells, from the fluid portion of the blood. This allows for the rapid measurement of analytes in whole blood and the detection of hemolysis, which can affect the accuracy of test results. The system includes a microchannel, an acoustic transducer, and an analyte detector for measuring the target analyte in the fluid portion of the blood. [Extracted from the article]

A patent has been issued for an acoustic wave resonator with active shunt capacitance cancellation. The invention aims to improve the accuracy of acoustic wave systems used to detect mechanical and electrical changes. The system includes an active resonator, an inactive resonator, and an active shunt capacitance cancelling oscillator circuit. By effectively cancelling out the shunt capacitance associated with the active resonator, the system allows for more precise tracking of resonator parameters. The invention also includes additional features such as reflector regions, a guide layer, and a functionalized active area. [Extracted from the article]

Instrumentation Laboratory Company has been issued a patent for a system and method for analyzing analytes in whole blood without the need for filtering or centrifuging. The system uses microfluidics and acoustic waves to separate the cellular portion of whole blood from the fluid portion, such as plasma, in the same device where analytes in the fluid portion are detected. This technology addresses the challenge of high throughput and rapid measurement of analytes in body fluids, as well as the detection of hemolysis in a whole blood sample. The system includes a microchannel, acoustic transducers, and an analyte detector. [Extracted from the article]

A recent report discusses research on biosensors conducted by a researcher at Soonchunhyang University in South Korea. The study focuses on exosomes, small extracellular vesicles produced by cells in the human body, and their potential as biomarkers for diseases like cancer. The researchers developed a surface acoustic wave (SAW) biosensor to detect a specific microRNA called miR-106b, which is associated with various malignancies. The SAW biosensor showed promising results in detecting miR-106b in exosomes isolated from cancer cells, suggesting its potential use in biological research and clinical diagnosis. [Extracted from the article]

A recent report from Duke University in Durham, North Carolina, discusses the development of acousto-dielectric tweezers, which can independently manipulate multiple microparticles. These tweezers use acoustic radiation forces and dielectrophoretic forces to precisely position individual microparticles. The researchers believe that this technology has potential applications in colloidal assembly, cell-cell interaction studies, disease diagnostics, and tissue engineering. The study was supported by the National Science Foundation and the National Institutes of Health. [Extracted from the article]

This article proposes a robust method for the synthesis and design of optimal linear group delay filters with prescribed bandwidth and dispersion properties. The proposed filters are based on a cascade of second-order all-pass filter cells, for which all the parameters are optimized in order to reach the desired wideband linear group delay characteristic with positive slope. Compared to the previously published synthesis method, the proposed approach offers appropriate initialization enabling convergence and aiming for the optimal solution. The method’s convergence and robustness are proved through a 21-cells synthesis, which is the highest number of cascaded cells reported to date, due to the usual convergence problem. Then the electronic feasibility is illustrated through the measurement results of a lumped-elements linear group-delay filter prototype dimensioned with this method. The measured group delay presents a positive slope of 8 ns GHz−1 in the frequency range [100–725] MHz. It is, to the best of our knowledge, the highest positive slope reported to date with an electronic implementation (i.e except SAW and waveguide devices). [ABSTRACT FROM AUTHOR]

Extremal elastic materials here refer to a specific class of elastic materials whose elastic matrices exhibit one or more zero eigenvalues, resulting in soft deformation modes that, in principle, cost no energy. They can be approximated through artificially designed solid microstructures. Extremal elastic materials have exotic bulk wave properties unavailable with conventional solids due to the soft modes, offering unprecedented opportunities for manipulating bulk waves, e.g., acting as phonon polarizers for elastic waves or invisibility cloaks for underwater acoustic waves. Despite their potential, Rayleigh surface waves, crucially linked to bulk wave behaviors of such extremal elastic materials, have largely remained unexplored so far. In this paper, we theoretically investigate the propagation of Rayleigh waves in extremal elastic materials based on continuum theory and verify our findings with designed microstructure metamaterials based on pantographic structures. Dispersion relations and polarizations of Rayleigh waves in extremal elastic materials are derived, and the impact of higher order gradient effects is also investigated by using strain gradient theory. This study provides a continuum model for exploring surface waves in extremal elastic materials and may stimulate applications of extremal elastic materials for controlling surface waves. [ABSTRACT FROM AUTHOR]

Inventor Julien Sapin has published a patent application for a rehabilitation device and apparatus aimed at addressing the need for effective upper limb rehabilitation and assessment following incidents such as stroke. The device includes a display surface, a detection surface with light emitters and detectors, and a processing unit. By detecting objects placed on the detection surface and comparing them to predefined shapes, the device can objectively assess the functionality of the user's upper limbs. The device also allows for the use of a variety of objects, increasing the range of exercises and assessments that can be performed. The patent application provides detailed claims for the device and system. [Extracted from the article]

The article highlights the patent application number USPTO 20240255489 for a system and method of analyzing analytes in whole blood using microchannel-based acoustic wave separation, filed by Gert Blankenstein and Hansong Zeng on April 12, 2024. It also discusses the challenges of separating blood components without centrifugation, the use of acoustic waves for partitioning blood cells from plasma, and the integration of analyte detection within the same system.

The existence of surface acoustic waves (SAWs) is studied in laterally periodic superlattices, modelled as an anisotropic elastic half-space with an arbitrary periodic variation of its material properties along the stratification direction (call it X) parallel to the surface. Unlike a homogeneous half-space, such a structure allows for more than one (dispersive) SAW. Specifically, it is shown that any superlattice with a generic shape of periodicity profile admits at most three SAW dispersion branches ω (K x) , i.e., at most three different SAW frequencies at any fixed Bloch wavenumber K x. Moreover, the total number of SAWs at fixed K x in a pair of superlattices with periodicity profiles obtained from one another by the inversion of the axis X cannot exceed three either. At least one SAW branch must exist in one of these two superlattices unless the bulk-wave threshold is the so-called exceptional (i.e., admits surface skimming wave). The SAW branch is unique in the particular case of a superlattice invariant to the inversion X → − X. The above general results are illustrated by the perturbation theory derivations for the weakly modulated superlattices. Explicit leading-order formulas are obtained for the quasi-Rayleigh wave branch evolving from the Rayleigh wave in each of the mutually "inverse" superlattices and for the quasibulk wave branch evolving from the exceptional bulk-wave threshold in one of the superlattices. • A laterally periodic superlattice may support more than one surface acoustic wave • Two mutually "inverse" superlattices together admit at most three surface waves • If the stratification profile is symmetric, then the surface wave is unique • Approximate solutions are obtained in the case of weakly modulated superlattices • In this case, there is a quasi-Rayleigh wave in each of the "inverse" superlattices • The third possible solution is a quasibulk wave that may exist in one of them [ABSTRACT FROM AUTHOR]

Frameworks for uncertainty quantification in the acoustic field and robust shape optimization for sound barriers based on the isogeometric boundary element method (IGA BEM) and polynomial chaos expansion (PCE) method are proposed in this work. The continuous adjoint variable method (AVM) is adopted and formulated under the circumstance of IGA BEM to accelerate the sensitivity computation in shape optimization. The uncertainties of the wavenumber of the incident acoustic wave and the surface admittance of sound absorbing material are considered. The uncertainty of surface admittance is described with a Gaussian random field, which is then discretized with the expansion optimal linear estimation method. The stochastic response of the structure is calculated with the IGA BEM and PCE method. The sensitivity of the stochastic response is also obtained using the PCE method. A weighted sum of the mean value and standard deviation of the average sound pressure level of observed points is set as the objective function for the robust shape optimization and the optimization problem is solved by the method of moving asymptotes. Numerical examples demonstrate that the proposed robust optimization method is more suitable for situations with uncertain material and load parameters compared to results with deterministic optimization. • Uncertainty quantification for acoustic problems is achieved through PCE and IGA BEM. • A Gaussian random field is considered, which is discretized with EOLE based on IGA. • An IGA BEM-based robust optimization framework for sound barriers is established. • A continuous AVM, based on IGA BEM, is developed to accelerate robust optimization. [ABSTRACT FROM AUTHOR]

A patent application titled "Ladder-Type Filter, And Duplexer And Modules With Ladder-Type Filter" has been published online by the US Patent and Trademark Office. The patent application, filed by inventors Hitoshi Ebihara and Shinichi Shioi, relates to a ladder-type filter used in mobile communication terminals. The inventors aim to provide a ladder-type filter that maintains miniaturization without compromising power durability. The ladder-type filter includes a plurality of series arms and parallel arms, with one of the parallel arms lacking resonance properties. The patent application also mentions the use of the ladder-type filter in duplexers and modules. The assignee for this patent application is Sanan Japan Technology Corporation. [Extracted from the article]

A patent application titled "Portable Ultrasound System And Methods Of Treating Facial Skin By Application Of Surface Acoustic Waves" has been published online. The inventor, Brian Murphy, describes the invention as a portable ultrasound system that can be used for cosmetic skincare. The system includes a handheld ultrasound device and flexible patches that can be applied to the face. The ultrasound waves generated by the device and patches can improve blood circulation, heat tissue, accelerate enzyme activity, and enhance natural healing processes. The invention also allows for the delivery of active cosmetic ingredients to the upper layers of the skin. [Extracted from the article]

This paper studies the acoustic wave scattering and attenuation in a cylindrical waveguide (pipe) with wall roughness varying along all three dimensions and roughness height smaller than the acoustic wavelength. Using the decomposition of the acoustic wave field into deterministic and random components, small perturbation method and Fourier transform the analytical solution of a 3-D averaged acoustic wave field is obtained. The correction term describing the mechanism of wave attenuation caused by roughness and determined by the modal cross-talk is also derived. The solution for the plane wave is validated in the frequency range extended well beyond the second cut-off frequency, where the crosstalk between the fundamental and non-axisymmetric modes are observed. The analytical solution is compared with the numerical results obtained with the Monte-Carlo method and Finite Element solver. The numerical study results have demonstrated a close agreement with the analytical solution for the averaged sound field, dispersion curves, and the wave attenuation effect expressed as the wavenumber correction term. A key novelty of this work is a comprehensive analysis of wave dispersion and cut-off frequency changes due to the presence of 3-D wall roughness in a pipe. [ABSTRACT FROM AUTHOR]

Cellular Highways Ltd., based in Royston, United Kingdom, has been issued a patent for an apparatus and method for sorting microfluidic particles. The patent describes a single-junction sorter for a microfluidic particle sorter that uses a bubble generator and a vortex element to direct particles into the desired output channel. The invention aims to address the limitations of current cell sorting instruments and provide a technology suitable for sorting a large number of cells with high purity, yield, and viability. The patent also discusses the challenges of parallelizing particle sorters within a microfluidic chip. [Extracted from the article]

A recent study conducted by the Chinese Academy of Sciences has proposed a new approach for viral RNA detection using a programmable controlled surface acoustic wave (SAW)-based device. This device can perform all steps for RNA detection in a single mini chamber, requiring only 489 mu l of reagents. The experimental results have shown that the PCR results from the device are comparable to those achieved via commercial qPCR instrumental detection. This research demonstrates the potential of SAW-based lab-on-a-chip devices for point-of-care testing for infectious diseases. [Extracted from the article]

A recent study conducted by researchers at Tianjin University in China has yielded new findings on tissue engineering. The study focuses on the development of a highly integrated microsystem called TAS/LOC, which consolidates multiple bioanalytical functions within a single chip, improving efficiency and precision in bioanalysis and biomedical operations. The researchers introduce a novel ring array composed of eight Lamb wave resonators, forming an Ultra-Fast Centrifuge Tunnel (UFCT) in a microfluidic system. This UFCT enables ultra-fast centrifugation with a larger liquid capacity, reduced power usage, and greater linear speed, surpassing the limitations of previous methods. The study demonstrates successful high-fold enrichment of particles and explores the UFCT's potential in tissue engineering. [Extracted from the article]

The patent application titled "Acoustic Microfluidic System For Cell Fusion, Preparation Method Therefor And Use Thereof" discusses the limitations of current cell fusion techniques and proposes a new system that addresses these issues. The system utilizes a polydimethylsiloxane (PDMS) cavity, microbubbles, and bulk wave transducers to capture and fuse cells. The inventors also provide a method for preparing the PDMS cavity. The system has potential applications in gene localization, tumor cell vaccines, monoclonal antibody production, animal breeding, and cancer treatment. The patent application provides detailed information on the system's operation, manufacturing, and bonding of the PDMS cavity, as well as the formation of uniform-sized microbubbles. [Extracted from the article]

A patent application titled "Ladder-Type Filter, And Duplexer And Modules With Ladder-Type Filter" has been published online by the US Patent and Trademark Office. The patent application, filed by inventors Hitoshi Ebihara and Shinichi Shioi, relates to a ladder-type filter used in mobile communication terminals. The inventors aim to provide a ladder-type filter that maintains miniaturization without compromising power durability. The ladder-type filter includes a plurality of series arms and parallel arms, with one of the parallel arms lacking resonance properties. The patent application also mentions the use of the ladder-type filter in duplexers and modules. The assignee for this patent application is Sanan Japan Technology Corporation. [Extracted from the article]

A recent report from Chongqing Medical University in China discusses the advancements in magnetochemistry and its applications in droplet manipulation for biomedical purposes. The research highlights the advantages of magnetic droplet manipulation, such as biocompatibility, remote control, and instantaneous response. The report provides an overview of the principles, influencing factors, and methods of magnetic droplet manipulation, as well as its role in diagnostic assays, drug discovery, and cell culture. The article also discusses the challenges and future prospects of magnetic droplet manipulation in biomedical applications. [Extracted from the article]

Instrumentation Laboratory Company has been issued a patent for a system and method for analyzing analytes in whole blood without the need for filtering or centrifuging. The system uses microfluidics and acoustic waves to separate the cellular portion of whole blood from the fluid portion, allowing for the detection of analytes in the fluid portion. This technology addresses the challenge of high throughput and rapid measurement of analytes in body fluids, as well as the detection of hemolysis in a whole blood sample. The system has the potential to improve clinical diagnostics and reduce the risk of device malfunction and human error. [Extracted from the article]

According to an article in Blood Weekly, researchers have developed a technique called soft-lithographically defined acoustic bioassembly (SLAB) that allows for the assembly of live cells into complex multicellular structures. This technique uses a soft lithography technique to create a template that defines the pressure distribution of near-field acoustic waves, enabling the assembly of cells into symmetrical or asymmetrical patterns. The researchers demonstrated the SLAB technique by assembling endothelial spheroids and hepatic cells into liver tissue mimics, which displayed liver-specific functions. This technique has potential applications in tissue engineering and regenerative medicine. However, it is important to note that this research has not yet undergone peer review. [Extracted from the article]

We introduce the surface viscoelasticity under finite deformations. The theory is straightforward generalization of the Gurtin–Murdoch model to materials with fading memory. Surface viscoelasticity may reflect some surface related creep/stress relaxation phenomena observed at small scales. Discussed model could also describe thin inelastic coatings or thin interfacial layers. The constitutive equations for surface stresses are proposed. As an example we discuss propagation shear (anti-plane) waves in media with surface stresses taking into account viscoelastic effects. Here we analysed surface waves in an elastic half-space with viscoelastic coatings. Dispersion relations were derived. [ABSTRACT FROM AUTHOR]

Enoch was one of the antediluvian patriarchs. However, whereas Genesis makes no mention of them other than they existed, Enoch tells us that they eventually turned on humans and killed them.2 Enoch, himself, has numerous encounters with extraterrestrial visitors. The Slavonic Book of Enoch A second book of Enoch was discovered in the Belgrade library in 1886. Alien encounters and abductions involving entire families are well known in modern UFO literature suggesting perhaps that the extraterrestrials are interested in a particular genetic trait.39 The Hebrew Book of Enoch The Hebrew version of Enoch was compiled around 300 to 400 AD. [Extracted from the article]

FEATURES A FOREST GREW up around Mike Valentine and his radar detector, the Valentine One. Valentine had seen some CMI engineers and customers run two detectors, one facing forward and one to the rear for more coverage, but the setup had problems. Valentine says the company went through more than 200 firmware versions before launching the device. Valentine side-stepped the problem by including Bluetooth and opening up the device's application-programming interface to third parties. [Extracted from the article]

A researcher from Chang Gung University in Taiwan has published new studies and findings on biosensors. The research focuses on the measurement of small dense LDL cholesterol, which is associated with cardiovascular disease risk. The study presents a simple membrane device filtration method that can be used to determine small dense LDL in serum without specialized equipment. The researchers propose that this method, combined with a shear horizontal surface acoustic wave (SH-SAW) biosensor, could be a promising rapid in vitro diagnostic method for predicting small dense LDL concentrations. [Extracted from the article]

Shanghai United Imaging Healthcare Co. Ltd. has been issued a patent for a radio frequency power amplifier control device. The device is designed to achieve constant gain and constant phase in radio frequency power amplifiers (RFPA) used in magnetic resonance imaging (MRI) systems. The control device includes an input signal processing module, a delay module, and an adjustment module. It addresses the problem of hysteresis in traditional nonlinear correction devices, which can lead to poor imaging stability and artifacts in MRI systems. The patent provides detailed information about the components and functions of the control device. [Extracted from the article]

A patent application has been submitted by OtoNexus Medical Technologies Inc. for an apparatus and method to characterize acute otitis media (AOM). AOM is a common condition in children that can lead to hearing loss and delays in speech and language development if left untreated. Current diagnostic methods for AOM are invasive and have limited accuracy, leading to unnecessary antibiotic prescriptions. The patent application describes a device that uses ultrasound and acoustic waves to determine the presence and type of fluid in the middle ear, providing a more accurate diagnosis of AOM. [Extracted from the article]

New research from Huazhong University of Science and Technology in Wuhan, China explores the challenges of bonding lithium niobate (LiNbO3) with polydimethylsiloxane (PDMS) for the fabrication of acoustic microfluidic chips. The researchers propose an irreversible bonding method using oxygen plasma modification, which forms niobium-oxygen-silicon covalent bonds at the interface. The resulting PDMS-LiNbO3 acoustic microfluidic chip demonstrates a high bonding strength and excels in leakage tests. This study addresses a gap in bonding theory and advances the practical application of PDMS-LiNbO3 in the acoustic microfluidic field. [Extracted from the article]

This patent application presents a new type of fluid sensing device called a membrane resonator sensor. The sensor utilizes a vibrating membrane that responds to different substances, enabling the detection of target substances in a fluid. The invention has potential applications in fields such as gas detection and disease diagnosis through sweat analysis. The sensor addresses the limitations of existing sensors by ensuring that the electrodes are not exposed to the fluid being analyzed. The patent application also provides a method for manufacturing the sensor. [Extracted from the article]

A recent study conducted at the University of Tokyo has developed a new medical technology that can detect acetone gas molecules at extremely low levels in the air. The researchers created partially suspended monolayer graphene surface acoustic wave gas sensors (G-SAWs) that are highly sensitive and can detect acetone gas molecules at parts per trillion (ppt) levels. The sensors exhibited rapid response and recovery at room temperature, making them a potential tool for diagnosing different stages of diabetes. This research highlights the need for low-power, highly sensitive, and reliable healthcare technology to monitor human health in real-time. [Extracted from the article]

Researchers from the Norwegian University of Science and Technology (NTNU) have conducted a study on the lysis of AC16 human cardiomyocyte cells using surface acoustic waves. The study aimed to determine the effects of shear rate and residence time on the lysis process. The researchers found that the extracted DNA was affected by both the shear rate and the actuation period, which led to an accumulation of damage on the cell membrane. This research provides valuable insights into the potential use of surface acoustic waves for cell lysis in diagnostic and treatment processes. [Extracted from the article]

Researchers from Southeast University in Nanjing, China have published a report on their novel approach to fabricating biomimetic surfaces for droplet manipulations. By using capillary waves induced by surface acoustic waves, they were able to deform polymer films into pre-designed structures, allowing for impressive droplet transportation and water collection abilities. The researchers believe that their acoustic-derived surfaces and technologies have potential applications in microreactor integration, biochemical reaction control, and tissue engineering. The full research article can be accessed for free through the provided link. [Extracted from the article]

A patent application by inventor Brian Murphy proposes a system, device, and method for mitigating bacterial biofilms associated with indwelling medical devices. Biofilms, which are formed by bacteria adhering to surfaces, can lead to infections and are difficult to eradicate. The invention involves the use of low-frequency ultrasound in conjunction with antibiotics to enhance their effectiveness in killing bacteria. The portable ultrasound system described in the patent application generates surface acoustic waves along the surface of the medical device to inhibit biofilm formation and prevent biofilm-associated infections. This technology has the potential to reduce the incidence of infections and improve patient outcomes. [Extracted from the article]

A recent report from I-Shou University in Kaohsiung City, Taiwan, discusses the potential of using gold nanoparticles in the diagnosis of diseases through exhaled human breath analysis. The researchers developed a surface acoustic wave (SAW) sensor based on graphene/polypyrrole composite films decorated by gold nanoparticles (AuNPs-G/PPy) that can detect ammonia in parts-per-billion concentrations. The sensor demonstrated outstanding sensitivity, selectivity, repeatability, and reproducibility for ammonia gas in dry air. The researchers attribute the excellent sensing performance to the synergistic effects of graphene's conductivity, the catalytic properties of gold nanoparticles, and the conductivity sensitization facilitated by electron-hole recombination on the polypyrrole surface. [Extracted from the article]

Announces that ripples of sound could speed up chemical reactions 2000 times. Research conducted by Yasunobu Inoue at Nagaoka University of Technology in Japan; Surface acoustic waves used by Inoue as a catalyst; Chemicals that he achieved his results with; Results of the author's reproduction of the experiment.

Researchers from Xi'an Jiaotong University have developed a new method for detecting cardiac troponin I (cTnI), a specific biomarker used to diagnose acute myocardial infarction (AMI). The method, called low-noise fluorescent detection, utilizes surface acoustic wave separation to purify the target and achieve more sensitive detection. By isolating microbeads through acoustic radiation force on a microfluidic chip, background noise interference is significantly reduced, allowing for accurate detection of cTnI concentration in human serum. The biosensor developed in this study demonstrated a detection limit of 44 pg/mL in PBS buffer and 0.34 ng/mL in human serum, and its reliability was validated through comparison with clinical tests. [Extracted from the article]

This article discusses the use of gas sensors in food quality detection. The researchers from the Beijing Academy of Agricultural and Forestry Sciences highlight the importance of rapid and effective technologies for assessing the quality of food products. Gas sensors, such as metal oxide, metal oxide semiconductor, surface acoustic wave, colorimetric, and electrochemical sensors, have shown promise in detecting volatile gases during the deterioration of aquatic products, meat products, fruit, and vegetables. The integration of data analytics and artificial intelligence into gas sensor arrays is also explored, aiming to enhance adaptability and reliability in diverse food environments. The article concludes by addressing the challenges faced by gas sensor-based food quality detection technologies and suggesting potential interdisciplinary solutions. [Extracted from the article]

Keywords: Tainan; Taiwan; Asia; Biomarkers; Diagnostics and Screening; Health and Medicine; Immunofluorescence EN Tainan Taiwan Asia Biomarkers Diagnostics and Screening Health and Medicine Immunofluorescence 2677 2677 1 11/06/23 20231110 NES 231110 2023 NOV 10 (NewsRx) -- By a News Reporter-Staff News Editor at Health & Medicine Week -- Current study results on Diagnostics and Screening - Biomarkers have been published. Tainan, Taiwan, Asia, Biomarkers, Diagnostics and Screening, Health and Medicine, Immunofluorescence. [Extracted from the article]

"In some embodiments, at least two vertically connected acoustic resonators are bonded to each other through a bonding layer arranged on the support layer, and after two acoustic resonators are bonded to each other, a distance between a top electrode layer of one acoustic resonator and a top electrode layer of the other acoustic resonator ranges from 10 mm to 20 mm in the active area. The acoustic resonator assembly according to claim 1, wherein at least two vertically connected acoustic resonators are bonded to each other through a bonding layer arranged on the support layer, and after two acoustic resonators are bonded to each other, a distance between a top electrode layer of one acoustic resonator and a top electrode layer of the other acoustic resonator ranges from 10 mm to 20 mm in the active area. The acoustic resonator assembly according to claim 1, wherein electrodes of the acoustic resonator and electrodes of another acoustic resonator are connected to each other in a plurality of ways, to form at least one of a series structure and a parallel structure. "In some embodiments, bottom electrode layers of acoustic resonators of two adjacent acoustic resonator assemblies arranged side by side are arranged on one layer, and connected to each other. [Extracted from the article]

QPAT is an imaging modality that combines ultrasound, which is an imaging technique that uses sound waves to image features inside the body, and optical tomography. It uses acoustic wave intensity data measured on the surface of the body through a scanner composed of acoustic wave detectors. Keywords: Mathematics; University of Texas at Arlington EN Mathematics University of Texas at Arlington 4002 4002 1 09/11/23 20230911 NES 230911 2023 SEP 15 (NewsRx) -- By a News Reporter-Staff News Editor at Medical Imaging Week -- A multidisciplinary team lead by University of Texas at Arlington mathematics Assistant Professor Souvik Roy is on a mission to improve medical imaging using a new technique called quantitative photoacoustic tomography (QPAT).A multidisciplinary team lead by University of Texas at Arlington mathematics Assistant Professor Souvik Roy is on a mission to improve medical imaging using a new technique called quantitative photoacoustic tomography (QPAT). [Extracted from the article]

Here, we demonstrate acoustic wave chirality transmission between two reciprocal metamaterial vortex wave antennas, generating and sensing transmitted acoustic wave chirality through the sub-wavelength geometry of the system. Keywords: Chirality; Health and Medicine EN Chirality Health and Medicine 1011 1011 1 08/28/23 20230903 NES 230903 2023 SEP 3 (NewsRx) -- By a News Reporter-Staff News Editor at Medical Devices & Surgical Technology Week -- A new study on chirality is now available. [Extracted from the article]

Standing surface acoustic wave (SSAW) based microfluidic devices have shown great promise toward fluid and particle manipulation applications in medicine, chemistry, and biotechnology. In this article, we present an analytical model for investigating continuous manipulation of particles (both synthetic and biological) within electroosmotic flow of non-Newtonian bio-fluids in a microfluidic channel under the influence of standing surface acoustic waves (SSAW). The particles are injected along the center of channel into the electroosmotically driven flow of power-law fluids, wherein their transport through the SSAW region is dictated by the hydrodynamic, electrophoretic, and acoustic forces. We first present a mathematical model to analyze the characteristics of electroosmotic flow of non-Newtonian power-law fluids in a hydrophobic slit microchannel. Next, we investigate the trajectories of particles in the flow field due to the combined effect of electroosmotic, electrophoretic, and acoustophoretic forcing mechanisms. The effect of key parameters such as particle size, their physical properties, input power, flow rate, and flow behavior index on the particle trajectories is examined while including the effect of the channel walls. The presented model delineates the methodologies of improving SSAW-based particle separation technology by considering the fluid rheology as well as the surface properties of the channel walls. Therefore, we believe that this model can serve as an efficient tool for device design and quick optimizations to explore novel applications concerning the integration of electroosmotic flows with acoustofluidic technologies. [ABSTRACT FROM AUTHOR]