Physical Properties of Materials: Phonon Localization via Defect Engineering in Low-Dimensional Boron Nitride
Abstract
Heat conduction in non-metals occurs via propagation of waves of lattice vibrations energy, whose quanta are called phonons. Because phonons undergo several types of de-phasing scattering, it has been difficult to use phase-coherent interactions for controlling heat conduction, thereby relying largely on manipulating phonon diffusion to minimize heat propagation. Phase-coherent interactions across the whole blackbody spectrum of phonons could presumably exhibit Anderson location, but this has never been experimentally observed. The goal of this high-risk high-reward project is to explore Anderson localization of broadband phonons in 1-D and 2-D boron nitride (BN), which could potentially offer the opportunity to create ultralow thermal conductance via defect engineering in materials.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jun 10, 2019
- Source ID
- W911NF1910358
Entities
People
- Arun Majumdar
Organizations
- Army Contracting Command
- Stanford University
- United States Army