3,699 results match your criteria: "School of Electrical and Electronic Engineering[Affiliation]"

Background: Keloids are a common fibrotic disease of the skin, with the pathological hallmark of excessive extracellular matrix synthesis due to abnormal fibroblast activity. Since keloids clinically arise in areas of high mechanical tension, the mechanotransductory pathway may be attributed to its pathogenesis. We aimed to establish a preclinical platform to elucidate the underlying mechanism of keloid development and its clinical persistence.

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Fault detection observer design for Takagi-Sugeno fuzzy systems with finite-frequency specifications.

ISA Trans

December 2024

College of Mechanical and Electrical Engineering, Harbin Engineering University, 150001, PR China. Electronic address:

This paper addresses robust fault detection observer design for a class of discrete-time Takagi-Sugeno fuzzy systems with finite-frequency specifications. A novel design method is presented based on finite-frequency H/H indices and peak-to-peak analysis. The finite-frequency H and H indices are utilized to characterize fault sensitivity and disturbance robustness, respectively.

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Field-Free Superconducting Diode Effect and Magnetochiral Anisotropy in FeTeSe Junctions with the Inherent Asymmetric Barrier.

ACS Nano

November 2024

Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore.

Article Synopsis
  • Nonreciprocal electrical transport is important for modern electronics and is now being studied in superconductors, specifically through a phenomenon called the superconducting diode effect (SDE), which allows unequal supercurrents in different directions.
  • The SDE often requires broken inversion symmetry and is typically seen with electrical magnetochiral anisotropy (eMCA), but achieving it without a magnetic field is important for the development of superconductor devices.
  • This research demonstrates a new field-free SDE in FeTeSe (FTS) junctions linked to surface gradients and spin splitting, providing a simple and effective method to enhance superconducting electronics.
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Over the past 20 years, hybrid plasmonics for nanoemitters of light or for nanoabsorbers, based on weak or strong coupling between metallic nanocavities and active media (emissive or absorbing entities), have given rise to important research efforts. One of the main current challenges is the control of the nanoscale spatial distribution and associated symmetry of the active medium in the vicinity of the metallic nanoparticles. In this review, we first recall the main principles of weak and strong coupling by stressing the importance of controlling the spatial distribution of the active medium and present the main approaches developed for achieving this control.

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Functional fibers, retaining nanoscale characteristics or nanomaterial properties, represent a significant advance in nanotechnology. Notably, the combination of scalable manufacturing with cutting-edge nanotechnology further expands their utility across numerous disciplines. Manufacturing kilometer-scale functional fibers with nanoscale properties are critical to the evolution of smart textiles, wearable electronics, and beyond.

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Structured light analogy of quantum squeezed states.

Light Sci Appl

October 2024

Department of Precision Instrument, Tsinghua University, Beijing, 100084, China.

Quantum optics has advanced our understanding of the nature of light and enabled applications far beyond what is possible with classical light. The unique capabilities of quantum light have inspired the migration of some conceptual ideas to the realm of classical optics, focusing on replicating and exploiting non-trivial quantum states of discrete-variable systems. Here, we further develop this paradigm by building the analogy of quantum squeezed states using classical structured light.

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Kinetic energy harvesting has significant potential, but current methods, such as friction and deformation-based systems, require high-frequency inputs and highly durable materials. We report an electrochemical system using a two-phase immiscible liquid electrolyte and Prussian blue analogue electrodes for harvesting low-frequency kinetic energy. This system converts translational kinetic energy from the displacement of electrodes between electrolyte phases into electrical energy, achieving a peak power of 6.

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Regulating Solvated Sheath with Anion Chelant Enables 4.6 V Ultra-Stable Commercial LiCoO.

Chemistry

December 2024

State Key Laboratory of Advanced Electromagnetic Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China.

Article Synopsis
  • Increasing the cut-off voltage of lithium cobalt oxide (LCO) is a strategy to meet the demand for high energy density, but it leads to structural damage due to irreversible phase transitions.
  • The study investigates the role of an anion chelating agent, tris(pentafluorophenyl) borane (TPFPB), in stabilizing the electrode-electrolyte interface (EEI) of LCO.
  • By using TPFPB additives in a special electrolyte, researchers were able to create a stable LiF-rich CEI layer, significantly improving the cycling stability of Li/LCO half cells and Gr/LCO pouch cells at high voltage.
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Liquid Bi-Sb-Sn Electrodes with Synergistic Stabilization Mechanism for Long-Lifespan Sodium-Based Liquid Metal Batteries.

ACS Appl Mater Interfaces

October 2024

State Key Laboratory of Advanced Electromagnetic Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China.

Sodium-based liquid metal batteries are well suited for stationary energy storage due to their long life, intrinsic safety, and ease of scale-up. However, the irreversible alloying reaction between the positive current collector (PCC) and the cathodes at high temperatures leads to severe capacity degradation of the battery, severely limiting its scale-up application. In this work, a Bi-Sb-Sn alloy cathode based on a synergistic stabilization mechanism was designed for the first time.

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Wearable Sensors, Data Processing, and Artificial Intelligence in Pregnancy Monitoring: A Review.

Sensors (Basel)

October 2024

Singapore Institute of Manufacturing Technology, Agency for Science, Technology and Research (A*STAR), 5 Cleantech Loop, Singapore 636732, Singapore.

Article Synopsis
  • Pregnancy monitoring is crucial for the health of mothers and fetuses, with WHO reporting 287,000 maternal deaths in 2020, sparking a need for more accessible options than traditional hospital visits.
  • Advances in wearable sensors and AI are making home-based, non-invasive health monitoring for pregnant women more feasible and convenient.
  • The review highlights the role of wearable sensors in tracking physiological signals and how AI can enhance early detection and diagnosis, while also addressing ongoing challenges like accuracy and data privacy.
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Article Synopsis
  • Global increases in waste due to population growth and urbanization have highlighted the challenges of the waste collection vehicle routing problem (WCVRP), affecting economic, environmental, and social aspects.
  • The literature review emphasizes the need for further research on underrepresented waste types, like medical waste, and advocates for more comprehensive models that reflect real-world complexities and multiple objectives for sustainability.
  • The paper suggests a roadmap for improving WCVRP strategies, emphasizing the importance of hybrid algorithms, diverse testing methods, and integrating different optimization goals aligned with sustainable development.
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Article Synopsis
  • An aptamer-ligand biorecognition system was developed to detect cyanide intoxication through its metabolite, 2-amino-2-thiazoline-4-carboxylic acid (ATCA).
  • Aptamers were identified from a DNA library using a technique called GO-SELEX, and their effectiveness was tested through molecular docking and thermodynamic analysis.
  • The resulting aptasensor, utilizing the best-performing aptamer (Apt46), demonstrated a low detection limit and high recovery rates across different biological samples, showing promise for use in acute cyanide exposure cases.
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Single-Shot 3D Imaging Meta-Microscope.

Nano Lett

October 2024

School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue Singapore, 639798 Singapore, Singapore.

Article Synopsis
  • The study introduces a new 3D imaging technology using an all-dielectric metasurface to create a meta-microscope that enhances precision and resolution for various applications, such as biological imaging and semiconductor monitoring.
  • The 4f-meta-microscope achieves impressive axial localization accuracy of below 0.12 μm over a 15.47 μm range, while the 2f-DH meta-microscope provides 1.12 μm accuracy within a wider 227.33 μm range.
  • This innovative approach allows for single-shot, high-resolution 3D imaging of biological samples, exemplified with successful imaging of mouse kidney tissue and peach anther, streamlining 3D bioimaging processes
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Article Synopsis
  • Infrared and visible image fusion combines thermal and detailed texture images to enhance target visibility and texture quality.
  • Traditional methods using auto encoder-decoder frameworks are inflexible and rely on manual strategies, which can limit their effectiveness.
  • The new EMAFusion approach introduces a multiscale encoder and a learnable fusion network that uses advanced attention mechanisms, showing improved performance in the TNO image fusion dataset compared to current methods.
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High-Performance Pure Polymer Electrolytes with Enhanced Ionic Conductivity for Room-Temperature Applications.

Small

December 2024

Key Laboratory of Engineering Dielectrics and Its Application (Ministry of Education), School of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin, 150080, P. R. China.

Article Synopsis
  • - All-solid-state lithium metal batteries (ASSLMBs) are emerging as top contenders for future energy storage due to their high energy density and enhanced safety features.
  • - Researchers developed a new polymer solid-state electrolyte (PSP-0.05) by optimizing the base material (PVDF-HFP) with succinonitrile and polyacrylonitrile, achieving impressive ionic conductivity (3.2 × 10 S cm) and a wide voltage window (up to 5 V).
  • - In battery tests, the PSP-0.05 electrolyte excelled, showing high discharge capacities and over 94.9% capacity retention after 1000 cycles, indicating its potential for practical use in safer ASSLMBs
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Article Synopsis
  • Commercial wearable biosignal sensors often cause skin irritation and discomfort, deterring users from adopting these devices.
  • A new fabric-based MXene electrode has been developed, which is lightweight, flexible, and designed to maintain stable contact with the skin to enhance biosignal detection.
  • This innovative electrode design allows for real-time wireless monitoring and excellent gesture recognition, competing well with existing commercial bioelectrodes in terms of performance and reliability.
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Highly elastic relaxor ferroelectrics for wearable energy storage.

Mater Horiz

November 2024

CAS Key Laboratory of Magnetic Materials and Devices, and Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, 1219 West Zhongguan Road, Zhenhai District, Ningbo, P. R. China, 315201.

Polymer-based relaxor ferroelectrics with high dielectric constant are pivotal in cutting-edge electronic devices, power systems, and miniaturized pulsed electronics. The surge in flexible electronics technology has intensified the demand for elastic ferroelectric materials that exhibit excellent electrical properties and mechanical resilience, particularly for wearable devices and flexible displays. However, as an indispensable component, intrinsic elastomers featuring high dielectric constant and outstanding resilience specifically tailored for elastic energy storage remain undeveloped.

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scPanel: a tool for automatic identification of sparse gene panels for generalizable patient classification using scRNA-seq datasets.

Brief Bioinform

September 2024

Programme in Cardiovascular and Metabolic Disorders, Centre for Computational Biology, Duke-NUS Medical School, 8 College Road, Singapore 169857, Singapore.

Article Synopsis
  • Single-cell RNA sequencing (scRNA-seq) allows researchers to analyze gene expression at the individual cell level, which helps identify biomarkers for diseases but can be costly when dealing with many genes.* -
  • scPanel is a new computational framework that aims to simplify the selection of important biomarker genes for diagnosing patients by identifying a minimal set of genes that are most relevant to specific health conditions.* -
  • Tests of scPanel on diseases like scleroderma, colorectal cancer, and COVID-19 showed it can effectively classify patients using fewer than 20 genes, and it has proven to be more effective than existing methods for selecting these gene panels.*
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Ultrafast Tailoring Amorphous ZnVO with Precision-Engineered Artificial Atomic-Layer 1T'-MoS Cathode Electrolyte Interphase for Advanced Aqueous Zinc-Ion Batteries.

Angew Chem Int Ed Engl

September 2024

Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE), Northwestern Polytechnical University, Xi'an, 710129, China.

Article Synopsis
  • Vanadium-based oxides used as cathodes in aqueous zinc-ion batteries face challenges like slow zinc movement and dissolution of vanadium, leading to capacity loss and short lifespan.
  • The researchers developed a new method to create a core@shell structure, where an amorphous vanadium oxide (a-ZVO) is coated with a layer of molybdenum disulfide (MoS), enhancing zinc diffusion and reducing vanadium dissolution.
  • The resulting materials show improved cycling stability and performance, suggesting a promising approach for designing better cathodes in zinc-ion batteries.
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Screening Ammonium-Based Cationic Additives to Regulate Interfacial Chemistry for Aqueous Ultra-Stable Zn Metal Anode.

Adv Sci (Weinh)

November 2024

Key Laboratory of Engineering Dielectric and Applications (Ministry of Education), School of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin, 150080, P. R. China.

Article Synopsis
  • The dynamics and chemistry at the electrolyte/metal interface are crucial for the reversible deposition and dissolution of zinc in battery systems.
  • Different cationic ammonium-based additives can enhance this interfacial chemistry, leading to better performance in zinc anodes.
  • Specifically, tetramethylammonium shows a unique ability to stabilize the solvation shell around zinc, resulting in significantly improved efficiency and long-lasting performance in both symmetric and asymmetric battery configurations.
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Concisely Constructing S, F Co-Modified MnO Nanoparticles Attached to S, N Co-Doped Carbon Skeleton as a High-Rate Performance Anode Material.

Molecules

September 2024

State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.

The utilization of MnO anodes with high storage capacity is significantly hindered by rapid capacity fading and inadequate rate capability, stemming from substantial volume fluctuations and low electrical conductivity. Crafting a composite comprising sulfur and fluorine co-modified MnO nanoparticles integrated with sulfur and nitrogen co-doped carbon matrices promises enhanced electrochemical performance yet poses formidable obstacles. Here, we present a straightforward synthetic strategy for in situ growth of sulfur and fluorine co-modified MnO nanoparticles onto sulfur and nitrogen co-doped carbon scaffolds.

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Due to the radial network structures, small cross-sectional lines, and light loads characteristic of existing AC distribution networks in mountainous areas, the development of active distribution networks (ADNs) in these regions has revealed significant issues with integrating distributed generation (DGs) and consuming renewable energy. Focusing on this issue, this paper proposes a wide-range thyristor-controlled series compensation (TCSC)-based ADN and presents a deep reinforcement learning (DRL)-based optimal operation strategy. This strategy takes into account the complementarity of hydropower, photovoltaic (PV) systems, and energy storage systems (ESSs) to enhance the capacity for consuming renewable energy.

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Peeling wheat yields higher-quality flour. During processing in a flaking machine, wheat kernels undergo continuous compression within the machine's chamber. As this compression persists, damage to the kernels intensifies and accumulates, eventually leading to kernel breakage.

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Metasurface-enabled broadband multidimensional photodetectors.

Nat Commun

September 2024

School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 639798, Singapore.

Article Synopsis
  • Light carries complex information, and traditional methods for analyzing this data require multiple specific optical components, complicating detection systems.
  • This study introduces a metasurface-assisted graphene photodetector that can simultaneously identify different polarization states and wavelengths of light (1-8 μm) with high accuracy (0.5 μm).
  • Using advanced techniques like cooperative multiport metasurfaces and machine learning, the new device allows for effective separation of polarization and wavelength information, paving the way for compact and efficient spectral-polarization co-detection.
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