Infrared Extinction Properties of Randomly Oriented Columnar Nano-Graphite Particles

Abstract:

The infrared extinction properties of columnar nano-graphite particles were studied based on the discrete dipole approximation (DDA) method. The research results show that infrared extinction properties of columnar nano-graphite particles are associated with the shape and size of particles and wavelength. For cylindrical nano-graphite particles, when the effective radius aeff =100nm，the more the length-diameter ratio deviates from value 1, the better the performance of extinction is. Under the circumstance of the same volume and length-diameter ratio, the infrared extinction will be different if the cross-section shapes of columnar nano-graphite particles are different. The infrared extinction properties of triangular prism nano-graphite particles are the best among the four kinds columnar particles.

• Periodical: Advanced Materials Research (Volumes 602-604)
• Pages: 165-168
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.602-604.165
• Online since: December 2012
• Authors: Hong Xia Wang, Zi Biao Song, Ni Chen Yang, Jin Ma
• Keywords: Columnar Particles, Discrete Dipole Approximation, Infrared Extinction, Nano-Graphite

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