Results 41 to 50 of about 409,083 (217)
Applied Physics Letters, 2020 Tungsten thin films are used for various applications and sometimes exhibit an A15 structure (β-W). They have some superior properties in comparison to the bcc structure (α-W), such as a higher superconducting transition temperature and larger spin Hall ...
A. Nagakubo +4 more
semanticscholar +1 more source
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
doaj +1 more source
Photoelastic properties of zinc-blende (AlGa)N in the UV: picosecond ultrasonic studies [PDF]
, 2018 Picosecond ultrasonics was used to study the photoelastic properties of zinc-blende (cubic) c-AlₓGa₁₋ₓN with x around 0.5 The velocities for longitudinal sound in the alloys were measured using ultrafast UV pump-probe experiments with (AlGa)N
Akimov, Andrey V. +4 more
core +2 more sources
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
core +2 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
doaj +1 more source
Controlled lasing from active optomechanical resonators [PDF]
, 2014 Planar microcavities with distributed Bragg reflectors (DBRs) host, besides confined optical modes, also mechanical resonances due to stop bands in the phonon dispersion relation of the DBRs.
Akimov, A. V. +10 more
core +3 more sources
Nonlinear Acoustics at GHz Frequencies in a Viscoelastic Fragile Glass Former [PDF]
, 2014 Using a picosecond pump-probe ultrasonic technique, we study the propagation of high-amplitude, laser-generated longitudinal coherent acoustic pulses in the viscoelastic fragile glass former DC704. We observe an increase of almost ten percent in acoustic
Gusev, Vitalyi E. +3 more
core +3 more sources
Development of confocal picosecond ultrasonics for visualizing propagation of an acoustic wave
Japanese Journal of Applied Physics, 2020 For visualizing propagation of an acoustic wave and evaluating the local sound velocity in micro/nano-meter structures, confocal picosecond ultrasonics is developed.
N. Nakamura, A. Maehara, H. Ogi
semanticscholar +1 more source
EPJ Web of Conferences, 2013 By using the picosecond ultrasonics technique, piezoelectric effect in GaAs undoped sample at both faces (A[111] and B[-1-1-1]) is experimentally studied.
Pezeril T. +3 more
doaj +1 more source
Acousto-optical nanoscopy of buried photonic nanostructures [PDF]
, 2017 We develop a nanoscopy method with in-depth resolution for layered photonic devices. Photonics often requires tailored light field distributions for the optical modes used, and an exact knowledge of the geometry of a device is crucial to assess its ...
Bartels +29 more
core +3 more sources