Systematic determination of absolute absorption cross-section of individual carbon nanotubes.

ABSTRACT: Optical absorption is the most fundamental optical property characterizing light-matter interactions in materials and can be most readily compared with theoretical predictions. However, determination of optical absorption cross-section of individual nanostructures is experimentally challenging due to the small extinction signal using conventional transmission measurements. Recently, dramatic increase of optical contrast from individual carbon nanotubes has been successfully achieved with a polarization-based homodyne microscope, where the scattered light wave from the nanostructure interferes with the optimized reference signal (the reflected/transmitted light). Here we demonstrate high-sensitivity absorption spectroscopy for individual single-walled carbon nanotubes by combining the polar

SUBMITTER: Liu K 

PROVIDER: S-EPMC4040614 | biostudies-literature | 2014 May

REPOSITORIES: biostudies-literature