Measurement of the Young’s Modulus of a Ceramic Thin-Film Using Gigahertz Longitudinal Bulk Waves [PDF]
한국정밀공학회지, 2019 Picosecond ultrasonic evaluation on the Young’s modulus of a ceramic thin-film was performed in the present study. A 100 nm thick silicon nitride thin-film was deposited on a silicon wafer using the plasma enhanced chemical vapor deposition technique and
Yun Young Kim
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Time-Domain Investigations of Coherent Phonons in van der Waals Thin Films
Nanomaterials, 2020 Coherent phonons can be launched in materials upon localized pulsed optical excitation, and be subsequently followed in time-domain, with a sub-picosecond resolution, using a time-delayed pulsed probe. This technique yields characterization of mechanical,
Fabien Vialla, Natalia Del Fatti
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Femtosecond nonlinear ultrasonics in gold probed with ultrashort surface plasmons [PDF]
, 2012 Fundamental interactions induced by lattice vibrations on ultrafast time scales become increasingly important for modern nanoscience and technology. Experimental access to the physical properties of acoustic phonons in the THz frequency range and over ...
A Devos +30 more
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Dispersive coherent Brillouin scattering spectroscopy
Photoacoustics, 2023 Frequency- and time-domain Brillouin scattering spectroscopy are powerful tools to read out the mechanical properties of complex systems in material and life sciences.
Ayumu Ishijima +3 more
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Time-domain Brillouin scattering assisted by diffraction gratings [PDF]
, 2017 Absorption of ultrashort laser pulses in a metallic grating deposited on a transparent sample launches coherent compression/dilatation acoustic pulses in directions of different orders of acoustic diffraction. Their propagation is detected by the delayed
Chaban, Ievgeniia +4 more
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Picosecond ultrasonic microscopy of semiconductor nanostructures [PDF]
The Journal of the Acoustical Society of America, 2011 We describe a new picosecond ultrasonics method for the study of nanostructures. A sound pulse is generated when an ultra-short laser pulse is absorbed in a transducer structure. The sound then propagates across a thin layer of water and is reflected from the surface of the sample being examined.
Thomas J. Grimsley +4 more
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Reducing AC impedance measurement errors caused by the DC voltage dependence of broadband high-voltage bias-tees [PDF]
, 2007 During the AC impedance characterization of devices, from the kHz-range up to the GHz-range, accuracy can be lost when a DC voltage is applied. Commercial high-voltage broadband bias-tees are often voltage-dependent, which can cause inaccuracies at low ...
Reimann, K. +2 more
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Surfaces and thin films studied by picosecond ultrasonics [PDF]
, 1990 This research supported by grant FG02-86ER45367 is the study of the properties of solids by means of the picosecond technique. In this research we investigate both fundamental problems in phonon physics and lattice dynamics, and we also apply the technique to the non-destructive evaluation of thin-film microstructures.
Maris, J. H., Tauc, J.
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Sound velocity and absorption measurements under high pressure using picosecond ultrasonics in diamond anvil cell. Application to the stability study of AlPdMn [PDF]
, 2007 We report an innovative high pressure method combining the diamond anvil cell device with the technique of picosecond ultrasonics. Such an approach allows to accurately measure sound velocity and attenuation of solids and liquids under pressure of tens ...
B. Perrin +10 more
core +6 more sources
Apparent attenuation by opto-acoustic defocus in phonon microscopy
Photoacoustics, 2020 Understanding the mechanical properties of biological cells is a challenging problem for the life sciences partly because there are limited methods for mapping elasticity with high resolution.
Fernando Pérez-Cota +5 more
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