Coherent Control of Thermal Transport

Abstract

This project is to develop techniques for controlling conductive thermal transport through excitation and manipulation of coherent phonons in a material. Fundamental studies of coherent phonon generation and interactions with other energy carriers were carried out for the development of the technique. The main method employed in this project is a temporal pulse shaping technique to generate femtosecond laser pulse trains and to excite, enhance, and/or suppress coherent phonons in a material. The method developed was also used to investigate phonon scattering and energy transfer in many emerging materials of engineering importance.

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Document Details

Document Type
Technical Report
Publication Date
May 10, 2011
Accession Number
ADA557872

Entities

People

  • Xianfan Xu

Organizations

  • Purdue University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Crystal Lattice Vibrations
  • Energy
  • Energy Conversion
  • Energy Transfer
  • Engineered Materials
  • Engineering
  • Excitation
  • Femtosecond Lasers
  • Femtosecond Time
  • Films
  • Heat Transfer
  • Laser Pulses
  • Lasers
  • Materials
  • Mechanical Engineering
  • Scattering
  • Thermal Conductivity

Fields of Study

  • Physics

Readers

  • Optical Physics and Photonics.
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.

Technology Areas

  • Directed Energy