Phonon Confinement Effect in TiO2 Nanoparticles as Thermosensor Materials

Abstract

TiO2 or ZnO nanoparticles (NPs) have a very strong finite-size dependency in their Raman spectra or photoluminescence (PL) spectra due to the phonon confinement effect or the quantum confinement effect. Together with a fast grain growth kinetics and a high stability under high temperature and pressure, they can forensically retain the complete thermal history of an event. By spatially distributing these NPs during thermal events such as blasts or weapon tests, a spatially and temporally non-uniform thermal environment can be determined by a direct read off their Raman or PL spectra at various locations.

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Document Details

Document Type
Technical Report
Publication Date
Jan 24, 2018
Accession Number
AD1045684

Entities

People

  • Liping Huang

Organizations

  • Rensselaer Polytechnic Institute

Tags

Communities of Interest

  • Energy and Power Technologies
  • Sensors
  • Weapons Technologies

DTIC Thesaurus Topics

  • Department Of Defense
  • Energy Bands
  • Grain Growth
  • Graphitic Materials
  • Heat Treatment
  • High Temperature
  • Materials
  • Materials Science
  • Measurement
  • Nanocomposites
  • Nanoparticles
  • Particle Size
  • Particles
  • Raman Spectra
  • Spectra
  • Thermal Conductivity
  • Thermal Stability

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Optical Physics and Photonics.
  • Thermal Physics or Thermal Science.

Technology Areas

  • Biotechnology
  • Quantum Computing