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Laser-induced light emission from carbon nanoparticles
- Source :
- Journal of Applied Physics. 104:074308
- Publication Year :
- 2008
- Publisher :
- AIP Publishing, 2008.
-
Abstract
- Strong absorption of light in a broad wavelength range and poor thermal conductance between particles of carbon nanomaterials, such as nanotubes, onions, nanodiamond, and carbon black, lead to strong thermal emission (blackbody radiation) upon laser excitation, even at a very low (milliwatts) power. The lasers commonly used during Raman spectroscopy characterization of carbon can cause sample heating to very high temperatures. While conventional thermometry is difficult in the case of nanomaterials, Raman spectral features, such as the G band of graphitic carbon and thermal emission spectra were used to estimate the temperature during light emission that led to extensive graphitization and evaporation of carbon nanomaterials, indicating local temperatures exceeding 3500 °C.
- Subjects :
- Materials science
Photoluminescence
business.industry
General Physics and Astronomy
chemistry.chemical_element
Carbon black
Laser
law.invention
Nanomaterials
Optical properties of carbon nanotubes
symbols.namesake
chemistry
law
symbols
Optoelectronics
Light emission
Raman spectroscopy
business
Carbon
Subjects
Details
- ISSN :
- 00218979
- Volume :
- 104
- Database :
- OpenAIRE
- Journal :
- Journal of Applied Physics
- Accession number :
- edsair.doi...........9e0920e024991405aee3523676911205