We discover that the spatially coherent radiation within a certain frequency range can be
obtained without a common nonlinear optical process. Conventionally, the emission spectra …

The low-frequency vibrational and low-temperature thermal properties of amorphous solids
are markedly different from those of crystalline solids. This situation is counterintuitive …

The relaxation dynamics and the vibrational spectra of amorphous solids, such as metal
alloys, have been intensely investigated as well separated topics in the past. The aim of this …

Thermal transport in amorphous materials has remained one of the fundamental questions
in solid state physics while involving a very large field of applications. Using a heat …

It is now well established that glasses feature quasilocalized nonphononic excitations—
coined “soft spots”—, which follow a universal ω 4 density of states in the limit of low …

Structural rejuvenation of glasses not only provides fundamental insights into their
complicated dynamics but also extends their practical applications. However, it is formidably …

Cellulose-based films have attracted significant attention in the fields of flexible photoelectric
products and energy equipment by virtue of their abundant sources, biodegradability …

High thermal conductivity is critical for many applications of polymers (for example,
packaging of light-emitting diodes), in which heat must be dissipated efficiently to maintain …

One of the long-standing issues concerning the thermal properties of amorphous solids is
the complex pattern of phonon transport. Recent advances in experiments and computer …

The vibrational anomalies of glasses, in particular the boson peak, are addressed from the
standpoint of heterogeneous elasticity, namely the spatial fluctuations of elastic constants …