RESUMO
Carbon nanotubes are used as the smallest possible scattering element for diffracting light in a highly controlled manner to produce a 2D image. An array of carbon nanotubes is elegantly patterned to produce a high resolution hologram. In response to incident light on the hologram, a high contrast and wide field of view CAMBRIDGE image is produced.
Assuntos
Holografia/instrumentação , Holografia/métodos , Imageamento Tridimensional/instrumentação , Imageamento Tridimensional/métodos , Nanotubos de Carbono/química , Transdutores , Desenho de Equipamento , Análise de Falha de Equipamento , Nanotubos de Carbono/ultraestrutura , Espalhamento de RadiaçãoRESUMO
Highly dense periodic arrays of multiwalled carbon nanotubes behave like low-density plasma of very heavy charged particles, acting as metamaterials. These arrays with nanoscale lattice constants can be designed to display extended plasmonic band gaps within the optical regime, encompassing the crucial optical windows (850 and 1550 nm) simultaneously. We demonstrate an interesting metamaterial waveguide effect displayed by these nanotube arrays containing line defects. The nanotube arrays with lattice constants of 400 nm and radius of 50 nm were studied. Reflection experiments conducted on the nanoscale structures were in agreement with numerical calculations.
