Thanks to ultrafast acoustics, a better understanding of acoustic dynamics on a short time
scale has been obtained and new characterization methods at the nanoscale have been …

The fascinating relationship between structure and property in nanowires has enabled a
wealth of applications in photonics and electronics. The behavior of phonons in nanowires is …

Coherent acoustic phonons are generated at terahertz frequencies when semiconductor
quantum-well nanostructures are illuminated by femtosecond laser pulses,,,,,,,,. These …

Background: Nanotechnology plays an important role in various engineering fields, one of
which is acoustics. Method: Here, we review the use of nanotechnology in multiple acoustic …

Picosecond ultrasonic laser sonar (PULSE), one of the noninvasive technologies with a high
thickness sensitivity, is capable of probing multilayer films directly on the production wafers …

Two-dimensional ultrasonic imaging is demonstrated by using acoustic nanowaves. With a
14 nm acoustic wavelength, both axial and transverse resolutions of a few tens of …

Several theoretical approaches to disordered media predict that acoustic waves should
undergo a quartic increase in their attenuation coefficient with increasing frequency in the …

The generation of guided acoustic phonons in the GHz range in GaN/AlN superlattices
grown atop a GaN nanowire is presented. Combined with a femtosecond laser, ultrafast …

This letter examines the anharmonic decay in GaN of subthermal (ℏ ω⪡ k BT) coherent
longitudinal acoustic (LA) phonons with a frequency in the subterahertz range. In a …

Chemical reactions at a solid–liquid interface are of fundamental importance. Interfacial
chemical reactions occur not only at the very interface but also in the subsurface area, while …