Results 191 to 200 of about 355,581 (296)
Optical wireless communications (OWCs) provide a promising alternative to spectrum‐congested microwave wireless communications. Recently, the use of metasurfaces with sub‐wavelength features for dynamic beam steering, beam manipulation, and spatial or optical‐angular‐momentum mode generation, conversion, and multiplexing in OWCs is proposed and ...
Ke Wang+7 more
wiley +1 more source
A compact self‐detecting dual‐comb spectroscopy (DCS) system based on dispersion‐engineered, high‐speed packaged quantum cascade lasers (QCLs) at λ≈4.6 μm under coherent injection locking is demonstrated. Broad multiheterodyne comb signal with reduced tooth linewidths by orders of magnitude is recorded.
Yu Ma+14 more
wiley +1 more source
A High‐Performance Miniaturized Frequency Shift Detection System for QCM‐Based Gravimetric Sensing
A miniaturized frequency shift detection system based on a phase‐locked loop (PLL) circuit is proposed for simplifying QCM measurement, possessing excellent performance of high sensitivity, resolution, linearity, and accuracy compared with a commercial frequency analyzer.
Chenyang Gao+6 more
wiley +1 more source
This work overcomes long‐standing crucial technical difficulties in miniaturizing micro‐wave detectors, caused by the longer‐wavelength diffraction limit, with carbon nanotube (CNT) film photo‐thermoelectric sensors. The CNT film sensor exhibits sensitive micro‐wave detection operations with signal‐to‐noise ratios over 1400 at compact device sizes ...
Qi Zhang+11 more
wiley +1 more source
Advances in Early Warning of Thermal Runaway in Lithium‐Ion Battery Energy Storage Systems
This review presents a comprehensive analysis of cutting‐edge sensing technologies and strategies for early detection and warning of thermal runaway in lithium‐ion battery energy storage systems. It discusses the factors inducing thermal runaway, the evolution mechanism, and the detectable characteristic signals, along with advancements in ...
Duzhao Han+3 more
wiley +1 more source
High-performance analog signal processing with photonic integrated circuits. [PDF]
Morichetti F.
europepmc +1 more source
Ammonia Dynamics in the Human Body: Insights in Biomedical Sensing Technologies
Ammonia (NH3) is a significant biomarker in diagnostics, affecting the respiratory system, stomach, liver, kidneys, bladder, and gastrointestinal tract. NH3 detection, using sensors, has the potential to improve medical diagnosis. This review examines recent advancements in NH3 sensing technologies and explores future research directions, including ...
Annelot Nijkoops+8 more
wiley +1 more source
Scalable photonic-phonoinc integrated circuitry for reconfigurable signal processing. [PDF]
Zhang L, Cui C, Xue Y, Chen P, Fan L.
europepmc +1 more source
AQUA‐FINS: Advanced Quantitative Underwater Analysis by a Flexible Integrated Nitrate Sensor
This work presents a flexible, integrated sensor array for real‐time monitoring of nitrate, pH, and temperature in aquaculture. The sensors exhibit high sensitivity and selectivity, while a regression model improves nitrate detection accuracy in dynamic conditions. Successful field deployment of the sensor array highlights its potential for maintaining
Shah Zayed Riam+6 more
wiley +1 more source
This study introduces a textile‐based capacitive pressure sensor featuring a triangular prism microstructure, which significantly enhances sensitivity to 5.52% kPa−¹ and supports a wide sensing range up to 330 kPa. The sensor's performance is validated in a 4‐channel capacitive pressure‐based force myography (cFMG) armband for gesture recognition ...
Rayane Tchantchane+3 more
wiley +1 more source