Understanding and controlling vibrations in condensed matter is emerging as an essential
necessity both at fundamental level and for the development of a broad variety of …

The central concept in phononics is the tuning of the phonon dispersion relation, or phonon
engineering, which provides a means of controlling related properties such as group velocity …

We report on the reduction of the thermal conductivity in ultra-thin suspended Si membranes
with high crystalline quality. A series of membranes with thicknesses ranging from 9 nm to …

Knowledge of the mean-free-path distribution of heat-carrying phonons is key to
understanding phonon-mediated thermal transport. We demonstrate that thermal …

During the past decades micro-electromechanical microphones have largely taken over the
market for portable devices, being produced in volumes of billions yearly. Because …

A detailed understanding of the connections of fabrication and processing to structural and
thermal properties of low-dimensional nanostructures is essential to design materials and …

Silicon (Si) and/or germanium (Ge) nanomembranes (NMs) play crucial roles in various
applications, including conventional microelectronics, as well as recently emerging high …

A detailed understanding of the relation between microscopic structure and phonon
propagation at the nanoscale is essential to design materials with desired phononic and …

Infrared (IR) radiation detectors are used in numerous applications from thermal imaging to
spectroscopic gas sensing. Obtaining high speed and sensitivity, low-power operation, and …

Using valid experimental parameters, we quantify the magnitude of resonantly phonon-
driven precession of exchange magnons in freestanding ferromagnetic nickel thin films on …