Work

Elastic wave transmission at an abrupt junction in a thin plate with application to heat transport and vibrations in mesoscopic systems

Year: 2001

Type: article

Abstract: The transmission coefficient for vibrational waves crossing an abrupt junction between two thin elastic plates of different widths is calculated. These calculations are relevant to ballistic phonon thermal transport at low temperatures in mesoscopic systems and the Q for vibrations in mesoscopic oscillators. Complete results are derived in a simple scalar model of the elastic waves, and results for long-wavelength modes are obtained using full elasticity theory. We suggest that thin-plate elasticity theory provides a useful and tractable approximation to the three-dimensional geometry.

Source: Physical review. B, Condensed matter

DOI: 10.1103/physrevb.64.085324

Authors: M. C. Cross, Ron Lifshitz

Institutions: California Institute of Technology, Tel Aviv University

Language: English

Topic: Thermal properties of materials

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

Funders: National Science Foundation, Defense Advanced Research Projects Agency, Division of Materials Research

Award: Phonon Heat Transport and Mechanical Oscillations in Mesoscopic Systems