High-speed femtosecond laser plasmonic lithography and reduction of graphene oxide for anisotropic photoresponse.

ABSTRACT: Micro/nanoprocessing of graphene surfaces has attracted significant interest for both science and applications due to its effective modulation of material properties, which, however, is usually restricted by the disadvantages of the current fabrication methods. Here, by exploiting cylindrical focusing of a femtosecond laser on graphene oxide (GO) films, we successfully produce uniform subwavelength grating structures at high speed along with a simultaneous in situ photoreduction process. Strikingly, the well-defined structures feature orientations parallel to the laser polarization and significant robustness against distinct perturbations. The proposed model and simulations reveal that the structure formation is based on the transverse electric (TE) surface plasmons triggered by the gradie

SUBMITTER: Zou T 

PROVIDER: S-EPMC7183510 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature