Results 41 to 50 of about 218 (120)

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, Angelo Sampaolo, Pietro Patimisco, Marilena Giglio, Stefano Dello Russo, Andrea Zifarelli, Arianna Elefante, Piotr Z. Wieczorek, Tomasz Starecki, Vittorio M. N. Passaro, Frank K. Tittel, Vincenzo Spagnolo   +11 more
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, Nikita Tukachev, Kehang Wang, Dmirty Zhirihin, Yaopeng Cheng, Pavel Krasnov, Mingzhao Song, Soslan Khubezhov, Wenping Yin, Emmanuel Stratakis, Sailing He, Andrey L. Rogach, Sergey Makarov   +12 more
wiley   +1 more source

All optical quartz-enhanced photoacoustic spectroscopy

Acta Physica Sinica, 2013
A trace gas sensor based on all optical quartz-enhanced photoacoustic spectroscopy (QEPAS) is designed and demonstrated. An extra detection light beam is added to the traditional QEPAS setup to convert the amplitude of vibration of the quartz tuning fork, which is proportional to the concentration of the target gas, into the variation of the detection ...
null Liu Yan-Yan, null Dong Lei, null Wu Hong-Peng, null Zheng Hua-Dan, null Ma Wei-Guang, null Zhang Lei, null Yin Wang-Bao, null Jia Suo-Tang   +7 more
openaire   +1 more source

Review of Advanced Nanosensors in Nanomedicine: Bridging Biosensing Innovations With Therapeutic Applications

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

Broadband detection of methane and nitrous oxide using a distributed-feedback quantum cascade laser array and quartz-enhanced photoacoustic sensing

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, Andrea Zifarelli, Angelo Sampaolo, Giansergio Menduni, Arianna Elefante, Romain Blanchard, Christian Pfluegl, Mark F. Witinski, Daryoosh Vakhshoori, Hongpeng Wu, Vittorio M.N. Passaro, Pietro Patimisco, Frank K. Tittel, Lei Dong, Vincenzo Spagnolo   +14 more
doaj   +1 more source

Commercial and Custom Quartz Tuning Forks for Quartz Enhanced Photoacoustic Spectroscopy: Stability under Humidity Variation

Sensors, 2023
This work investigates the behavior of commercial and custom Quartz tuning forkss (QTF) under humidity variations. The QTFs were placed inside a humidity chamber and the parameters were studied with a setup to record the resonance frequency and quality ...
Diba Ayache, Roman Rousseau, Elena Kniazeva, Julien Charensol, Tarek Seoudi, Michael Bahriz, Fares Gouzi, Vincenzo Spagnolo, Aurore Vicet   +8 more
doaj   +1 more source

Breath by Breath: Navigating the Landscape of Exhaled Breath in Clinical Research and Prospects for the Future

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, Hetansh Rao, Akshada Dabhade, Vishwa Patel, Vikalp Shroff, Deep Prajapati, Palak Parikh, Ketan Ranch, B. Mahalakshmi, Shery Jacob, Sai H. S. Boddu, Maria Jose Trujillo-Rodriguez   +11 more
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, Nicolas Maurin, Wioletta Trzpil, Michael Bahriz, Aurore Vicet   +4 more
openaire   +3 more sources

Quartz-Enhanced Photoacoustic Spectroscopy for Four-Component Gas Detection Based on Two Off-Beam Acoustic Microresonators

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

Visible‐Light Photoswitchable Covalent Tetra‐Ortho‐Fluoro‐Azobenzene Carbon Nanodot Hybrids for Optostimulation

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, Dominic Schatz, Anthea Villano, Yagmur Aydogan‐Sun, Juan Pablo Martínez, Michal Langer, Janis Hessling, Monika Schönhoff, Bernd M. Smarsly, Silvio Osella, Josef Wachtveitl, Maria Rosa Antognazza, Giuseppe M. Paternò, Teresa Gatti, Hermann A. Wegner   +14 more
wiley   +1 more source