Results 91 to 100 of about 21,982 (208)

Low-Cost, LED-Based Photoacoustic Spectrophone Using Hemispherical Acoustic Resonant Cavity for Measurement of Hydrocarbon Gases

Atmosphere
Spherical acoustic resonant cavities have been increasingly reported in photoacoustic spectroscopy due to their small volume and enhanced effective gas absorption path length.
Gaoxuan Wang, Lingxiao Hou, Fangjun Li, Lihui Wang, Chao Fei, Xiaojian Hong, Sailing He   +6 more
doaj   +1 more source

Laser Engineering of HfN‐Based Nanoparticles for Safe NIR‐I Photothermal and X‐ray Enhancing Cancer Therapies

Advanced Functional Materials, Volume 36, Issue 36, 4 May 2026.
In this study, we produced HfN‐based nanoparticles via femtosecond laser ablation in acetone. The nanoparticles exhibit a red‐shifted plasmonic resonance in the NIR‐I window, colloidal stability after coating with polyethyleneglycol, and excellent biocompatibility. The photothermal and X‐ray sensitization therapeutic effects were demonstrated for tumor
Julia S. Babkova, Ivan V. Zelepukin, Lyubov V. Gorelik, Anton L. Popov, Andrei I. Pastukhov, Gleb V. Tikhonowski, Maxim S. Savinov, Danil D. Kolmanovich, Nikita A. Pivovarov, Alina Yu. Kapitannikova, Anton A. Popov, Anna S. Sogomonyan, Vsevolod A. Skribitsky, Aziz B. Mirkasymov, Andrei V. Kabashin, Sergey M. Deyev   +15 more
wiley   +1 more source

photoacoustic spectroscopy

, 2014
Citation: 'photoacoustic spectroscopy' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.P04576 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source

Free radical and overtone spectroscopy [PDF]

In the fall of 1987 during a photoacoustic study of hydrogen peroxide's fourth vibrational overtone band, the remarkably clear and well resolved spectrum was observed.
Reilly, James P.
core   +1 more source

Boosting Photo‐Pyroelectric Effect via Tunable Polarization and Interfacial Defect Engineering

Advanced Science, Volume 13, Issue 25, 4 May 2026.
This study reports Ba(Ti0.85Zr0.15)O3 nanocatalysts with enhanced polarization and oxygen‐vacancy‐rich interfaces for efficient NIR‐II photo‐pyroelectric therapy. Zr doping boosts the pyroelectric coefficient and accelerates polarization switching, while oxygen vacancies improve photothermal conversion and surface reactivity.
Yanli Huang, Haifen Luo, Jie Yin, Shuai Cao, Gaolei Dong, Zhi Tan, Chunlin Zhao, Peiye Wen, Fengwei Sun, Shan Zhang, Xianzeng Zhang, Yunlu Dai, Zhen Yang, Wei Huang   +13 more
wiley   +1 more source

Ultra-highly sensitive dual gases detection based on photoacoustic spectroscopy by exploiting a long-wave, high-power, wide-tunable, single-longitudinal-mode solid-state laser

Light: Science & Applications
Photoacoustic spectroscopy (PAS) as a highly sensitive and selective trace gas detection technique has extremely broad application in many fields. However, the laser sources currently used in PAS limit the sensing performance. Compared to diode laser and
Shunda Qiao, Ying He, Haiyue Sun, Pietro Patimisco, Angelo Sampaolo, Vincenzo Spagnolo, Yufei Ma   +6 more
doaj   +1 more source

Review of Recent Advances in QEPAS-Based Trace Gas Sensing

Applied Sciences, 2018
Quartz-enhanced photoacoustic spectroscopy (QEPAS) is an improvement of the conventional microphone-based photoacoustic spectroscopy. In the QEPAS technique, a commercially available millimeter-sized piezoelectric element quartz tuning fork (QTF) is used
Yufei Ma
doaj   +1 more source

Extended π‐Conjugated Bridge Strategy for an Enhanced Stokes Shift and Multimodal Imaging‐Guided Type I/II Photodynamic Therapy Integrated With Photothermal Therapy

Aggregate, Volume 7, Issue 5, May 2026.
A “unity of a thousand blades” phototheranostic nanoplatform (TDTIC‐M) has been designed to achieve comprehensive theranostic capabilities for breast cancer, including specific subcellular targeting, near‐infrared I/II fluorescence imaging, photoacoustic imaging, photothermal imaging, and multimodal image‐guided synergistic Type I/II photodynamic ...
Chanyuan Jin, Feifan Zhao, Yane Zhang, Jiujiang Ji, Yuanyuan Han, Xiaoli Lu, Ping Wu, Chen Chen, Yan Yang, Yongqiang Feng, Jianfeng Huang, Haijun Ma, Mei Tian, Yen Wei   +13 more
wiley   +1 more source

Nanomaterial‐Mediated Near‐Infrared Photothermal Neuromodulation for Neurologic Disorders

Advanced NanoBiomed Research, Volume 6, Issue 5, May 2026.
This review summarizes how near‐infrared light activates photothermal nanomaterials to enable noninvasive neuromodulation with high spatiotemporal precision. It elucidates the underlying mechanisms, explores targeted therapeutic applications for neurological disorders, discusses integration with optogenetics and biosensors, and addresses future ...
Ting‐Ting Zeng, Yu‐Ge Wang, Ya‐Bing Zhang, Yuan‐Xin Bai, Si‐Tong Lin, Ting‐Ting Zhu, Yan‐Bo Zhou, Wei‐Tong Pan, Pan‐Miao Liu, Jian‐Jun Yang   +9 more
wiley   +1 more source

Quartz-Enhanced Photoacoustic Spectroscopy: A Review

Sensors, 2014
A detailed review on the development of quartz-enhanced photoacoustic sensors (QEPAS) for the sensitive and selective quantification of molecular trace gas species with resolved spectroscopic features is reported.
Pietro Patimisco, Gaetano Scamarcio, Frank K. Tittel, Vincenzo Spagnolo   +3 more
doaj   +1 more source