Results 31 to 40 of about 59,543 (358)

49th Winter School on Wave and Quantum Acoustics XLVIIIth Winter School on Environmental Acoustics and Vibroacoustics Szczyrk, Poland, February 24–27, 2020

open access: yesArchives of Acoustics, 2020
49th Winter School on Wave and Quantum Acoustics constituted platforms for sharing the results and achievements obtained in different branches of physical acoustics, as molecular acoustics, quantum acoustics, acousto-optics, magnetoacoustics ...
Dariusz Bismor
doaj   +1 more source

Design, fabrication, and optical characterization of one-dimensional photonic crystals based on porous silicon assisted by in-situ photoacoustics

open access: yesScientific Reports, 2019
We present a methodology to fabricate one-dimensional porous silicon (PSi) photonic crystals in the visible range by controlled etching and monitored by photoacoustics.
C. F. Ramirez-Gutierrez   +3 more
semanticscholar   +1 more source

Neurovascular photoacoustic tomography [PDF]

open access: yesFrontiers in Neuroenergetics, 2010
Neurovascular coupling refers to the relationship between neuronal activities and downstream hemodynamic responses. Photoacoustic tomography (PAT), enabling comprehensive label-free imaging of hemodynamic activities with highly scalable penetration and spatial resolution, has great potential in the study of neurovascular coupling.
Hu, Song, Wang, Lihong V.
openaire   +5 more sources

Photoacoustic Detection of H2 and NH3 Using Plasmonic Signal Enhancement in GaN Microcantilevers

open access: yesMicromachines, 2020
Photoacoustic (PA) detection of H2 and NH3 using plasmonic excitation in Pt- and Pd-decorated GaN piezotransistive microcantilevers were investigated using pulsed 520-nm laser illumination.
Digangana Khan   +4 more
doaj   +1 more source

Analytic Optimization of Cantilevers for Photoacoustic Gas Sensor with Capacitive Transduction

open access: yesSensors, 2021
We propose a new concept of photoacoustic gas sensing based on capacitive transduction which allows full integration while conserving the required characteristics of the sensor.
Wioletta Trzpil   +5 more
doaj   +1 more source

Waveform engineering analysis of photoacoustic radar chirp parameters for spatial resolution and SNR optimization

open access: yesPhotoacoustics, 2019
Recent developments in photoacoustics have witnessed the implementation of a radar matched-filtering methodology into the continuous wave photoacoustic modality. The main merit of using matched filtering in continuous photoacoustics is the improvement in
Zuwen Sun   +2 more
doaj   +1 more source

Surface Acoustic Waves in Thin Films Nanometrology [PDF]

open access: yes, 2015
Thin films nanometrology is an emerging field in nanoscience as the synthesis, processing and applications of nanostructured thin films require an in-depth knowledge of their elastic constants. The elastic energy of a surface acoustic wave propagating in
BETTUCCI, Andrea
core   +1 more source

Fiber endface photoacoustic generator for quantitative photoacoustic tomography

open access: yesOptics Letters, 2021
We demonstrate a novel fiber endface photoacoustic (PA) generator using infrared (IR) 144 laser dye dispersed within an ultraviolet adhesive. The generator provides a wide acoustic bandwidth in the transducer frequency range of 2–7 MHz, high thermal conversion efficiency ( > 90 % ), good PA signal controllability (well ...
Guang Yang   +6 more
openaire   +4 more sources

Twenty Years of Airborne Water Vapor and Total Water Measurements of a Diode Laser Based Photoacoustic Instruments

open access: yesFrontiers in Physics, 2020
We present relevant issues collected over 20 years of development and operation of an airborne water vapor/total water detector based on photoacoustic spectroscopy.
Miklós Szakáll   +8 more
doaj   +1 more source

Nanosecond SRS fiber amplifier for label-free near-infrared photoacoustic microscopy of lipids

open access: yesPhotoacoustics, 2022
Near-infrared photoacoustics receives increasing interest as an intravital modality to sense key biomolecules. One of the most central types of biomolecules of interest are lipids as they constitute essential bio-hallmarks of cardiovascular and metabolic
Hwidon Lee   +5 more
doaj   +1 more source

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