Results 31 to 40 of about 5,293,624 (249)

Quantitative analysis of a closed photoacoustic cell that uses a high compliance piezoelectric transducer [PDF]

, 2005
A treatment of the operation of low-frequency closed photoacoustic cells is presented, which considers the compliance of various cell elements. The optimum detector, according to our predictions, has a sensor whose compliance is large compared to that
Johnson, Mark, Jane Hodgkinson, Hodgkinson, Jane, John P. Dakin, Dakin, John P., Mark Johnson   +5 more
core   +1 more source

Clinical photoacoustic imaging of cancer [PDF]

Ultrasonography, 2016
Photoacoustic imaging is a hybrid technique that shines laser light on tissue and measures optically induced ultrasound signal. There is growing interest in the clinical community over this new technique and its possible clinical applications. One of the
Keerthi S. Valluru, Juergen K. Willmann
doaj   +1 more source

Photoacoustic Neuroimaging - Perspectives on a Maturing Imaging Technique and its Applications in Neuroscience

Frontiers in Neuroscience, 2021
A prominent goal of neuroscience is to improve our understanding of how brain structure and activity interact to produce perception, emotion, behavior, and cognition.
Silviu-Vasile Bodea, Silviu-Vasile Bodea, Gil Gregor Westmeyer, Gil Gregor Westmeyer   +3 more
doaj   +1 more source

Photoacoustic and fluorescence lifetime imaging of diatoms

Photoacoustics, 2020
Photoacoustic and fluorescent methods are used intensely in biology and medicine. These approaches can also be used to investigate unicellular diatom algae that are extremely important for Earth’s ecology.
Julijana Cvjetinovic, Alexey I. Salimon, Marina V. Novoselova, Philipp V. Sapozhnikov, Evgeny A. Shirshin, Alexey M. Yashchenok, Olga Yu. Kalinina, Alexander M. Korsunsky, Dmitry A. Gorin   +8 more
doaj   +1 more source

Gas cell photoacoustic detection of ultrasound absorption

, 2022
Paper 012058The photoacoustic signal generated by a 2 MHz ultrasound transducer has been detected at 500 Hz modulation frequency by an attached photoacoustic cell.
Netzelmann, U.
core   +1 more source

Synthetic aperture focusing technique for photoacoustic endoscopy

Optics Express, 2017
Photoacoustic endoscopy (PAE) is a promising tool for the detection of atherosclerotic plaque. In this work, we propose a novel design of a side-viewing PAE probe based on a synthetic aperture focusing technique (SAFT) to enable high transverse resolution over large depth of focus (DOF) along the radial direction.
De, Cai, Guangyao, Li, Dongqing, Xia, Zhongfei, Li, Zhendong, Guo, Sung-Liang, Chen   +5 more
openaire   +2 more sources

Correlation of trans-Lycopene Measurements by the HPLC Method with the Optothermal and Photoacoustic Signals and the Color Readings of Fresh Tomato Homogenates [PDF]

, 2009
The trans-lycopene content of fresh tomato homogenates was assessed by means of the laser photoacoustic spectroscopy, the laser optothermal window, micro-Raman spectroscopy, and colorimetry; none of these methods require the extraction from the product ...
Ksenija Marković, Charlotte van Twisk, Bicanic, D., Dane Bicanic, Bicanic, Dane, Bicanic, D.D., Dimitrovski, Darko, Buijnsters, J.G., Markovic, Ksenija, Buijnsters, Josephus Gerardus, van Twisk, C., Twisk, C., van, Otto Dóka, Luterotti, S., Luterotti, Svjetlana, Doka, O., Doka, Otto, Darko Dimitrovski, Dimitrovski, D., van Twisk, Charlotte, Svjetlana Luterotti, Markovic, K., Josephus G. Buijnsters, Twisk, C. van   +23 more
core   +1 more source

Detailed state of the art review for the different on-line/in-line oil analysis techniques in context of wind turbine gearboxes [PDF]

, 2011
The main driver behind developing advanced condition monitoring (CM) systems for the wind energy industry is the delivery of improved asset management regarding the operation and maintenance of the gearbox and other wind turbine components and systems ...
Hamilton, Andrew, Quail, Francis
core   +4 more sources

Recent Advances in QEPAS and QEPTS Based Trace Gas Sensing: A Review

Frontiers in Physics, 2020
This invited review paper summarizes and discusses developments of QTF based state-of-the-art quartz-enhanced photoacoustic spectroscopy (QEPAS) and quartz-enhanced photothermal spectroscopy (QEPTS) gas sensing techniques over the past 3 years.
Yufei Ma
doaj   +1 more source

Optical Light Sources and Wavelengths within the Visible and Near-Infrared Range Using Photoacoustic Effects for Biomedical Applications

Biosensors, 2022
The photoacoustic (PA) effect occurs when sound waves are generated by light according to the thermodynamic and optical properties of the materials; they are absorption spectroscopic techniques that can be applied to characterize materials that absorb ...
Unsang Jung, Jaemyung Ryu, Hojong Choi
doaj   +1 more source