Results 61 to 70 of about 3,337,551 (141)
Advanced Sensor Research, Volume 5, Issue 1, January 2026.This paper reviews the state of the art and recent developments in thin‐film biosensors for the detection of neurotransmitters, small molecules, and biomarkers within flexible, implantable bioelectronic systems. It covers the main sensing modalities, including electrochemical, plasmonic, acoustic, and magnetic, alongside their materials, transduction ...
Massimo Mariello
wiley +1 more source
Quartz Tuning Fork Resonance Tracking and application in Quartz Enhanced Photoacoustics Spectroscopy [PDF]
Sensors, 2019 The quartz tuning fork (QTF) is a piezoelectric transducer with a high quality factor that was successfully employed in sensitive applications such as atomic force microscopy or Quartz-Enhanced Photo-Acoustic Spectroscopy (QEPAS). The variability of the environment (temperature, humidity) can lead to a drift of the QTF resonance.
Roman Rousseau +4 more
openaire +3 more sources
PhotonicsDissolved gas analysis (DGA) is an essential technique for the fault diagnosis and condition monitoring of oil-immersed power transformers. Among various characteristic gases, acetylene (C2H2) is a key indicator of high-energy discharge and arc faults ...
Yihua Qian +5 more
doaj +1 more source
Frontiers in Physics, 2020 A compact and portable quartz-enhanced photoacoustic spectroscopy gas sensor was developed for four-component gas detection using two off-beam acoustic microresonators The two AMRs were placed in parallel on opposing sides of a quartz tuning fork for ...
Cheng Wang, Zongliang Wang, Xiyu Pang
doaj +1 more source
Hydrogen Halide Gas Sensors: Active Materials, Operation Principles, and Emerging Technologies
Interdisciplinary Materials, Volume 5, Issue 1, Page 85-123, January 2026.This review considers hydrogen halide (HX) gas sensors across functional materials and principles: acoustic, chemical, optical and nanophotonic. The strong acidity and reactivity of HX gases are discussed as constraints for stability and selectivity of these devices.
Xiuzhen Liu +12 more
wiley +1 more source
Photoacoustics, 2023 A proof-of-concept gas sensor based on a miniaturized and integrated fiber-optic photoacoustic detection module was introduced and demonstrated for the purpose of developing a custom tuning-fork (TF)-enhanced photoacoustic gas sensor.
Yufeng Pan +9 more
doaj +1 more source
IET Science, Measurement &Technology, Volume 20, Issue 1, January/December 2026.ABSTRACT Nanosensors represent a cornerstone of modern nanomedicine, enabling ultrasensitive, real‐time biosensing that bridges diagnostics and therapeutics towards personalised and proactive healthcare. This comprehensive review systematically examines the core principles of advanced nanosensors, including their classification by transduction ...
Mokhtar Aarabi, Haniyeh Faraji Azad
wiley +1 more source
PhotoacousticsMethane (CH4) is a greenhouse gas as well as being flammable and explosive. In this manuscript, quartz-enhanced photoacoustic spectroscopy (QEPAS) and heterodyne QEPAS (H-QEPAS) exploring a self-designed quartz tuning fork (QTF) with resonance frequency (
Tiantian Liang +4 more
doaj +1 more source
Quartz Enhanced Photoacoustic Spectroscopy Based Gas Sensor with a Custom Quartz Tuning Fork
Proceedings, 2018 We have fabricated a custom quartz tuning fork (QTF) with a reduced fundamental frequency, a larger gap between the prongs and the best quality factor in air at atmospheric conditions ever reported.
Maxime Duquesnoy +5 more
doaj +1 more source
Journal of Analytical Methods in Chemistry, Volume 2026, Issue 1, 2026.Exhaled breath analysis (EBA) has evolved as a noninvasive diagnostic technique with enormous promise in healthcare. The development in this area is based on the concept that the breathalyzers employed to measure the alcohol concentration in the blood can be utilized to evaluate health by analyzing the intricate chemical makeup of exhaled breath, which
Nisha Parikh +11 more
wiley +1 more source