Low-Frequency Terahertz Raman Spectra Of Graphite Flakes And Single-Walled Carbon Nanotube Aerogel

Poster (MATL-P1)

Tue, 10 Nov 2020 01:15am to 03:00am

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We investigate THz Raman spectra of graphite flakes and SWCNT aerogel using a 532 nm laser. THz Raman spectroscopy incorporates both the THz “structural fingerprint” and the Raman “chemical fingerprint” regions. Our results indicate graphite flakes and SWCNT aerogel have inelastic scattering properties in this THz region, mainly arising from the intra-molecule and intermolecular van der Waals bonds. In the structurally-relevant Raman band (10 cm-1 to 400 cm-1), these spectra shown multiple Raman features, which may be used to identify and discriminate subtle low-frequency Raman modes in low-dimensional sp2 carbon systems and specific chemical bonds and roles in THz region.

Presenters and Authors Info

Presenter: Anonymous

Authors: Zhang, Hao; Horvat, Joseph; Lewis, Roger

School of Physics and Institute for Superconducting and Electronic Materials, University of Wollongong