Results 71 to 80 of about 3,951 (191)
Light-emitting diodes and photodiodes in the deep ultra-violet range for absorption photometry in liquid chromatography, capillary electrophoresis and gas sensing [PDF]
, 2016 Absorbance measurement in the deep ultra-violet range (below 300 nm) has been one of the most widely used detection methods for analytical techniques as a large number of organic compounds have strong absorption bands in the deep UV region.
Bui, Duy Anh
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Aggregate, Volume 6, Issue 12, December 2025.An asymmetric heptamethine cyanine photosensitizer, Cyp‐TPE, is designed to break molecular symmetry and form ordered nanoaggregates, resulting in ultrahigh ROS generation and synergistic photothermal/photodynamic activity. It further triggers ferroptosis and lysosomal dysfunction, providing a potent aggregate‐based theranostic platform for imaging ...
Mengyuan Cui +6 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
Electrically-driven pure amplitude and frequency modulation in a quantum cascade laser [PDF]
, 2018 We present pure amplitude modulation (AM) and frequency modulation (FM) achieved electrically in a quantum cascade laser (QCL) equipped with an integrated resistive heater (IH).
Blaser, Stéphane +8 more
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Small Science, Volume 5, Issue 11, November 2025.This article discusses the preparation methods, structural engineering, and key properties of transition metal nitrides, as well as their versatile applications in supercapacitors, rechargeable batteries, electrocatalytic and photocatalytic processes, and solar cell technologies.
Narasimharao Kitchamsetti +2 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
Noninvasive Photoacoustic and Fluorescence Sentinel Lymph Node Identification using Dye-Loaded Perfluorocarbon Nanoparticles [PDF]
, 2010 The contrast mechanisms used for photoacoustic tomography (PAT) and fluorescence imaging differ in subtle, but significant, ways. The design of contrast agents for each or both modalities requires an understanding of the spectral characteristics as well ...
Achilefu, Samuel +11 more
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Rational Design and Fabrication of MEMS Gas Sensors With Long‐Term Stability: A Comprehensive Review
Advanced Science, Volume 12, Issue 39, October 20, 2025.Recent advances in microelectromechanical systems (MEMS) gas sensors are reviewed, emphasizing strategies to enhance long‐term stability, including chemical modification of sensing films and device structural optimization. Key challenges and future opportunities are also highlighted.
Chao Zhang +6 more
wiley +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
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Fiber evanescent wave quartz-enhanced photoacoustic spectroscopy
Acta Physica Sinica, 2018 In a conventional system of quartz-enhanced photoacoustic spectroscopy (QEPAS), the size of block-like optical collimation focusing lens group is difficult to reduce, and the structural stability is poor, which makes it hard to adapt itself to some special conditions, such as narrow space and vibrating circumstance.
null He Ying +4 more
openaire +1 more source