Results 101 to 110 of about 409,083 (217)
Photo-excited charge carriers suppress sub-terahertz phonon mode in silicon at room temperature [PDF]
, 2016 There is a growing interest in the mode-by-mode understanding of electron and phonon transport for improving energy conversion technologies, such as thermoelectrics and photovoltaics.
Chen, Gang +3 more
core +3 more sources
Advanced Optical Materials, Volume 14, Issue 6, 9 February 2026.The efficiency of bulk perovskite‐sensitised upconversion is hindered by parasitic singlet back‐transfer. A 2D perovskite spacer layer is introduced to weaken this loss pathway by increasing the separation between the sensitiser and the emitter. The spacer layer enhances the upconversion efficiency at lower excitation powers and improves the stability ...
Nicholas P. Sloane +10 more
wiley +1 more source
Photoacoustic Microscopy for Multiscale Biological System Visualization and Clinical Translation
Advanced Science, Volume 13, Issue 9, 13 February 2026.Photoacoustic microscopy (PAM) is a powerful biomedical imaging tool renowned for its non‐invasiveness and high resolution. This review synthesizes recent technological advances and highlights their broad applications from cellular and organ‐level to whole‐animal imaging.
Tingting Wang +3 more
wiley +1 more source
New Kinds of Acoustic Solitons
, 2007 We find that the modified sine-Gordon equation belonging to the class of the soliton equations describes the propagation of extremely short transverse acoustic pulses through the low-temperature crystal containing paramagnetic impurities with effective ...
Belenov É M +14 more
core +1 more source
Young modulus and Poisson ratio of PZT thin film by Picosecond Ultrasonics
2012 IEEE International Ultrasonics Symposium, 2012 Thin-film sol-gel Pb(Zr0.52, Ti0.48)O3 (PZT) can be used in many actuator applications thanks to its high piezoelectric coefficients. The accurate knowledge of its mechanical properties such as Young's modulus (E) and Poisson ratio (v) or stiffness ...
Fabrice Casset +8 more
semanticscholar +1 more source
The Omega Counter, a Frequency Counter Based on the Linear Regression
, 2015 This article introduces the {\Omega} counter, a frequency counter -- or a frequency-to-digital converter, in a different jargon -- based on the Linear Regression (LR) algorithm on time stamps. We discuss the noise of the electronics.
Bourgeois, P. -Y. +3 more
core +3 more sources
Coherent Brillouin spectroscopy in a strongly scattering liquid by picosecond ultrasonics.
Optics Letters, 2011 In a modification of a picosecond ultrasonic technique, a short acoustic pulse is launched into a liquid sample by a laser pulse absorbed in a semitransparent transducer film and is detected via coherent Brillouin scattering of a time-delayed probe pulse.
A. Maznev +5 more
semanticscholar +1 more source
, 2013 We investigate the thermoelastic response of a nanolayered sample composed of a metallic SrRuO3 (SRO) electrode sandwiched between a ferroelectric Pb(Zr0.2Ti0.8)O3 (PZT) film with negative thermal expansion and a SrTiO3 substrate.
Bargheer, M. +5 more
core +1 more source
Ultrafast piezospectroscopy of semiconductor micro- and nanostructures [PDF]
In this work experiments on the interaction of picosecond strain wave packets with semiconductor quantum wells and optical microcavities are presented.
Berstermann, Thorsten
core +1 more source