One-dimensional nature of protein low-energy vibrations

Vibrations Everywhere in Nature

Vibrations of a One-Dimensional Host-Guest System

A simple model shows how it is possible to create a gap in the vibrational spectrum of a one-dimensional lattice. The proposed model is a host-guest chain having, instead of point-like masses connected by spring, massive cages hosting particles inside. We imagine the cage as a rigid box containing a mass linked by a spring to the box inner wall. The presence of guests creates an energy gap in t...

MEMS Energy Harvesting from Low-Frequency and Low-Amplitude Vibrations

One-dimensional vibrations and disorder: The Zr1-xHfxS3 solid solution.

In the trichalcogenide family of compounds Zr& " Hf " S3 there is a frequency range where the optic modes are expected to be describable by a simple one-dimensional model. It is shown that the disorder-induced linewidth in the relevant frequency range could be consistent with theoretical calculations for a simple diatomic chain model. The vibrations involved are along the chain direction and ar...

Energy relaxation in nonlinear one-dimensional lattices.

We study energy relaxation in thermalized one-dimensional nonlinear arrays of the Fermi-Pasta-Ulam type. The ends of the thermalized systems are placed in contact with a zero-temperature reservoir via damping forces. Harmonic arrays relax by sequential phonon decay into the cold reservoir, the lower-frequency modes relaxing first. The relaxation pathway for purely anharmonic arrays involves the...