High-Contrast Imaging of Graphene via Time-Domain Terahertz Spectroscopy Public Deposited

http://ir.library.oregonstate.edu/concern/defaults/hx11xf840

This is the author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by Springer and can be found at:  http://www.springer.com/engineering/electronics/journal/10762.

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  • We demonstrate terahertz (THz) imaging and spectroscopy of single-layer graphene deposited on an intrinsic Si substrate using THz time-domain spectroscopy. A single-cycle THz pulse undergoes multiple internal reflections within the Si substrate, and the THz absorption by the graphene layer accumulates through the multiple interactions with the graphene/Si interface. We exploit the large absorption of the multiply reflected THz pulses to acquire high-contrast THz images of graphene. We obtain local sheet conductivity of the graphene layer analyzing the transmission data with thin-film Fresnel formula based on the Drude model.
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  • Tomaino, J. L., Lee, Y., Jameson, A. D., Paul, M. J., Kevek, J. W., van der Zande, A M, . . . . (2012). High-contrast imaging of graphene via time-domain terahertz spectroscopy. Journal of Infrared, Millimeter, and Terahertz Waves, 33(8), 839-845. doi: 10.1007/s10762-012-9889-7
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  • description.provenance : Submitted by Deanne Bruner (deanne.bruner@oregonstate.edu) on 2012-10-16T18:35:10Z No. of bitstreams: 1 LeeYun-ShikPhysicsHighContrastImaging.pdf: 530009 bytes, checksum: 6b734f86604cb110fd1c13fb7e79ba6c (MD5)
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  • description.provenance : Approved for entry into archive by Deanne Bruner(deanne.bruner@oregonstate.edu) on 2012-10-16T22:08:19Z (GMT) No. of bitstreams: 1 LeeYun-ShikPhysicsHighContrastImaging.pdf: 530009 bytes, checksum: 6b734f86604cb110fd1c13fb7e79ba6c (MD5)

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