Results 71 to 80 of about 3,994 (183)
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
Front-End Amplifiers for Tuning Forks in Quartz Enhanced PhotoAcoustic Spectroscopy
Applied Sciences, 2020 A study of the front-end electronics for quartz tuning forks (QTFs) employed as optoacoustic transducers in quartz-enhanced photoacoustic spectroscopy (QEPAS) sensing is reported.
Giansergio Menduni +11 more
doaj +1 more source
CleAir monitoring system for particulate matter. A case in the Napoleonic Museum in Rome [PDF]
, 2017 Monitoring the air particulate concentration both outdoors and indoors is becoming a more relevant issue in the past few decades. An innovative, fully automatic, monitoring system called CleAir is presented.
Bonacquisti, V. +5 more
core +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
Terahertz Photoacoustic Spectroscopy Using an MEMS Cantilever Sensor [PDF]
, 2014 In this paper, a microelectromechanical systems cantilever sensor was designed, modeled, and fabricated to measure the photoacoustic (PA) response of gases under very low vacuum conditions.
Coutu, Ronald A., Jr. +3 more
core +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
Photoacoustics, 2020 Here we report on the broadband detection of nitrous oxide (N2O) and methane (CH4) mixtures in dry nitrogen by using a quartz-enhanced photoacoustic (QEPAS) sensor exploiting an array of 32 distributed-feedback quantum cascade lasers, within a spectral ...
Marilena Giglio +14 more
doaj +1 more source
ChemPhotoChem, Volume 9, Issue 12, December 13, 2025.Tetra‐ortho‐fluoroazobenzene hybrids bound to carbon nanodots (CNDs) are prepared by covalent amide coupling. These show reversible switching between trans and cis using visible light (448 nm/530 nm), while retaining emission. The hybrids are nontoxic to cells and enable optical stimulation and offering potential for advanced light‐controlled ...
Paul P. Debes +14 more
wiley +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
Parallel acoustic delay lines for photoacoustic tomography [PDF]
, 2012 Achieving real-time photoacoustic (PA) tomography typically requires multi-element ultrasound transducer arrays and their associated multiple data acquisition (DAQ) electronics to receive PA waves simultaneously.
Cai, Xin +7 more
core +2 more sources