Ultra-sensitive fiber optic cryogenic liquid level sensor by irradiating Gaussian and non-Gaussian beam: a novel technique based on wave theory

Applied Physics B, Journal Year: 2025, Volume and Issue: 131(3)

Published: Feb. 27, 2025

Language: Английский

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Large gold nanoparticle release assay for attomolar detection of miRNA related to myelodysplastic neoplasms

Talanta, Journal Year: 2025, Volume and Issue: unknown, P. 128037 - 128037

Published: March 1, 2025

Language: Английский

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Integrated Microphotonic Platform for Highly Sensitive Virus Detection

Sensors and Actuators Reports, Journal Year: 2025, Volume and Issue: unknown, P. 100320 - 100320

Published: April 1, 2025

Language: Английский

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Tuning the electronic and adsorption properties of MoSe2 nanosheets by CuO, NiO and pair CuO-NiO metal oxide doping for efficient sensing of caffeine molecule: A DFT study

Computational and Theoretical Chemistry, Journal Year: 2025, Volume and Issue: unknown, P. 115234 - 115234

Published: April 1, 2025

Language: Английский

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Highly sensitive gold nanostar based optical fiber sensor with tunable plasmonic resonance

Sensors and Actuators Reports, Journal Year: 2025, Volume and Issue: unknown, P. 100326 - 100326

Published: April 1, 2025

Language: Английский

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A machine learning approach for enhanced early detection of cancerous cells using optimized metamaterial graphene biosensors

Published: April 22, 2025

Language: Английский

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Compact Chipless RFID Sensor for Frozen Food Monitoring

IEEE Sensors Journal, Journal Year: 2024, Volume and Issue: 24(9), P. 14205 - 14212

Published: March 22, 2024

Chipless RFID sensor is currently one of the most promising designs, especially in food safety sector, because it has a robust structure and inexpensive for mass production. This paper proposes simple, compact, low-cost chipless tag frozen monitoring. The system consists an interrogator antenna, which antipodal Vivaldi inside flat container that contains small quantity ice. When receiving power from alters frequency reflected signal if ice melts. One three states material can be detected, i.e. ice, water, air (empty container). peak response exhibits distinctively narrow 3-dB bandwidth 35 - 49 MHz, allowing multiple sensors to operate simultaneously within limited space; Peak center observed at 751 MHz or 838 respectively air, with no present water. simulated, analysed, verified by measuring free open space realistic environment. measurement melting over time also measured shown frequencies peaks are slowly decreasing during first 10 minutes after defrost completely disappears 15 minutes. resonant reappears 826 dry. A good tolerance background found when complex dielectric placed next sensor.

Language: Английский

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A 3-D-Printed Wearable Sensor Based on Fiber Bragg Gratings for Shoulder Motion Monitoring

IEEE Sensors Journal, Journal Year: 2024, Volume and Issue: 24(10), P. 16145 - 16152

Published: April 8, 2024

Rotator cuff (RC) injury is a common pathology that involves the tearing and weakening of muscles tendons make up RC. Rehabilitation after surgery crucial for recovery restoring range motion (ROM). Currently, assessment patient's improvement relies on subjective evaluations by physicians. To objectively evaluate patient recovery, capture systems (MOCAP) can be used in this scenario. However, MOCAP require extremely structured environments specialists. overcome issue, combined use flexible sensors with 3D printing techniques has been proposed. This solution will allow developing highly performant wearables reduced encumbrance, easy to use, compliant human skin. In study, we exploited advantages fiber Bragg gratings those propose transformative approach field shoulder monitoring. Firstly, 3D-printed sensor was designed fabricated using thermoplastic polyurethane as filament system flexible. One main novelties direct integration anchorage mechanism (two extensible elements) during printing. best our knowledge, one first works which Then, metrologically assessed investigate its sensitivity strain temperature, hysteresis error. Finally, preliminary healthy volunteer proposed assess capability monitoring flexion-extension movements different ROMs movement rates sagittal plane showing promising results.

Language: Английский

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Development of WS₂-QDs/MoS₂-NSs-Based WaveFlex Biosensor for Tyramine Detection in Real Food Samples

IEEE Sensors Journal, Journal Year: 2024, Volume and Issue: 24(14), P. 22336 - 22343

Published: May 29, 2024

Tyramine, a vasoactive amine with sympathomimetic properties, is commonly found in various foods. Elevated levels of tyramine the blood can lead to adverse reactions like migraines and high pressure, underscoring importance detecting its content food. This study introduces WaveFlex biosensor utilizing optical fiber-based localized surface plasmon resonance (LSPR) sensing principle detect efficiently accurately different samples. The probe was covered gold nanoparticles (AuNPs) stimulate LSPR effect, then molybdenum disulfide nanosheets (MoS ₂ -NSs) tungsten quantum dots (WS -QDs) were sequentially aligned on surface. It enhanced effect at same time provided more contact sites for tyrosinase enzyme functionalization, significantly improved sensor's sensitivity tyramine. Experimental findings reveal detection limit 2.80 μM 0.01122 nm/μM biosensor. probe's reproducibility, reusability, stability, selectivity, as well performance real samples varying pH evaluated. results highlight promising application potential wide-ranging development opportunities this across diverse

Language: Английский

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Multi-Parameter Fiber Bragg Grating (FBG)-based Sensor Fabricated using 3D Printing Technology for Precise Measurement of Vertical Earth and Pore Pressure

IEEE Sensors Journal, Journal Year: 2024, Volume and Issue: 24(16), P. 25793 - 25801

Published: Aug. 15, 2024

Language: Английский

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