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Conferences > CLEOPR > 2013 > WPB > WPB_23
  • 2013 Conference on Lasers and Electro-Optics Pacific Rim
  • (Optica Publishing Group, 2013),
  • paper WPB_23

Ultrafast Dynamics of the Interlayer Shearing Mode in Au Graphite Nanostructures

M. F. Avila-Ortega, I. Katayama, Y. Minami, J. Takeda, and M. Kitajima

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Abstract

The main objective of this research is to study the effect on gold nanostructures (~ 10 nm diameter size) deposited in highly ordered pyrolytic graphite (HOPG), by measuring coherent phonon spectroscopy with ultrashort (7.5 fs) laser pulses. The gold average thickness d was varied from 2 to 40 Å. We focused on the influence of gold nanoparticles in the interlayer shearing mode E2g, whose energy is about 1.3 THz.

We found a destructive interference of the phonon oscillations to decrease the intensity spectral peak which was critical for d=1.8 nm.

© 2013 IEICE

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