This review discusses picosecond ultrasonics experiments using ultrashort hard x-ray probe
pulses to extract the transient strain response of laser-excited nanoscopic structures from …

Nanoporous ultrathin films, constituted by a slab less than 100 nm thick and a certain void
volume fraction provided by nanopores, are emerging as a new class of systems with a wide …

Abstract Zero-group-velocity (ZGV) waves have the peculiarity of being stationary, and thus
locally confining energy. Although they are particularly useful in evaluation applications …

We present a free-running 80-MHz dual-comb polarization-multiplexed solid-state laser
which delivers 1.8 W of average power with 110-fs pulse duration per comb. With a high …

InAs nanowires are emerging as go-to materials in a variety of applications ranging from
optoelectronics to nanoelectronics, yet a consensus on their mechanical properties is still …

A topological state with protected propagation of elastic waves is achieved by appropriately
engineering a phononic metamaterial based on 2D pentamode structures in silicon. Gapless …

Terahertz (THz) and sub-THz coherent acoustic phonons have been successfully used as
probes of various quantum systems. Since their wavelength is in the nanometer range, they …

Time-effective, unsupervised clustering techniques are exploited to discriminate nanometric
metal disks patterned on a dielectric substrate. The discrimination relies on cluster analysis …

Appearing the zero group velocity (ZGV) point belonging to the first quasi flexural branch (A
1) of Lamb waves propagating in the multilayered traction-free plates containing …

Ultrafast spatiotemporal responses to laser pulses are important for understanding
fundamental processes in solids, such as diffusion of carriers and coherent vibrations of …