Index Catalog // ScholarsArchive@OSU

Creator:: Paul, M. J., Kuhta, N. A., Tomaino, J. L., Jameson, A. D., Maizy, L. P., Sharf, T., Rupesinghe, N. L., Teo, K. B. K., Inampudi, S., Podolskiy, V. A., Minot, E. D., and Lee, Yun-Shik
Abstract:: We demonstrate time-resolved terahertz transmission ellipsometry of vertically aligned multi-walled carbon nanotubes. The angle-resolved transmission measurements reveal anisotropic characteristics of the terahertz electrodynamics in multi-walled carbon nanotubes. The anisotropy is, however, unexpectedly weak: the ratio of the tube-axis conductivity to the transverse conductivity, sigma[subscript z]/sigma[subscript xy] [similar or equal to]...
Resource Type:: Article

Creator:: Paul, M. J., Tomaino, J. L., Kevek, J. W., DeBorde, T., Thompson, Z. J., Minot, E. D., and Lee, Yun-Shik
Abstract:: We investigate electron transport properties in large-area, single-layer graphene embedded in dielectric media, using free-space terahertz (THz) imaging and time-domain spectroscopy. Sandwiched between a thin polymethyl methacrylate (PMMA) layer and a Si substrate, graphene layers of different growth recipes exhibit distinctive spatial inhomogeneity of sheet conductivity. The non-contacting, non-destructive THz...
Resource Type:: Article

Creator:: Tomaino, J. L., Jameson, A. D., Paul, M. J., Kevek, J. W., van der Zande, A. M., Barton, R. A., Choi, H., McEuen, P. L., Minot, E. D., and Lee, Yun-Shik
Abstract:: 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...
Resource Type:: Article

ScholarsArchive@OSU