Giant heating of Si nanoparticles by weak laser light: Optical microspectroscopic study and application to particle modification
Journal Article
·
· Journal of Applied Physics
- Millenium Research for Advanced Information Technology (MIRAI), Advanced Semiconductor Research Center, National Institute of Advanced Industrial Science and Technology, AIST Tsukuba Central 4, Higashi, Tsukuba 305-8562 (Japan)
We show that Si particles 20-30 nm in diameter can be heated up to {approx}1500 K in atmospheric conditions by illumination with weak ({approx}1 mW) but sharply focused ({approx}2 {mu}m) visible laser light. Crystallization, oxidation, and color change of the particles occur as the result of the light-induced heating of the particles. These effects can be used for modification of the particles and preparation of Si-based luminescent material.
- OSTI ID:
- 20709670
- Journal Information:
- Journal of Applied Physics, Vol. 97, Issue 10; Other Information: DOI: 10.1063/1.1904157; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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