[7p-A404-1~9] 4.6 Nanocarbon and 2D Materials

▲ [7p-A404-7] Shape Effects of CNT Forest Metamaterials on IR and THz Properties

〇Hiroshi Furuta¹, Adam Pander¹, Keisuke Takano², Hiroki Miyaji¹, Akimitsu Hatta¹, Makoto Nakajima³ (1.School of Systems Engineering, Kochi University of Technology, 2.Shinshu University, 3.Instute of Laser Engineering, Osaka University)

Keywords:Carbon nanotubes, Metamaterial, CNT Forest Metamaterial

Size and shape controlled CNTs is a candidate of metamaterial nano-rod antenna in THz to the visible range. In this paper, we report anisotropic optical properties of vertically aligned CNT forests with/without SRR (Split ring resonator) patterning in IR and THz regions. Effect of CNT forest metamaterial pattern shapes on IR reflectance spectra and THz generation of CNT forests were investigated. IR reflectance was reduced for narrow gap SRR CNT forest metamaterial patterns. Anisotropic optical index of vertically aligned CNT forests is interpreted by the anisotropic electrical conductance of nano-rods of CNTs.