3D-FDTD is used to compute the electromagnetic response of various plasmonic nanostructures. Results of
computation and simulation are used to design the contact area of the photo-catalytic reactors. Novel nano-fabrication
techniques are developed to implement large surface area of plasmonic nanostructures for photo-catalytic reactors.
Measurement and analysis of the photo-catalytic process happened in the newly designed photo-chemical reactors clearly
demonstrate better efficiency of some photo-catalytic chemical process such as the decomposition of the Methyl Orange
to carbon dioxide and water.
Proc. SPIE. 6324, Plasmonics: Nanoimaging, Nanofabrication, and their Applications II
KEYWORDS: Nanostructures, Diffraction, Surface plasmons, Finite-difference time-domain method, Near field scanning optical microscopy, Near field, Wave propagation, Antimony, Optical discs, Near field optics
The near-field and far-field optical properties of Sb-type near-field optical disk structures with different polarized
situations are studied by finite-difference time-domain (FDTD) method. Localized surface plasmon enhancements are
found around rough surface of Sb layers for TM polarized, but no near-field enhancement is found in cases with TE
polarized incident waves. Far-field readout contrast signals of both TE and TM polarized situations show the superresolution
capability, because evanescent signals of subwavelength recording marks are coupled to propagating waves by
nanostructures (nano aperture or rough surface) in near-field active layer. Nevertheless, the contrast signals for TM
illumination are higher than TE illumination due to localized surface plasmon enhancements. A simplified Fourier
optics model is used to describe the relation between highly localized near-field distributions and enhanced resolution of
In this paper we investigate the change of surface plasma (SP) resonance of a left-handed material (LHM) nano-slab.
The intrinsic parameters of the LHM slab are suitable chose so that it has both negative permittivity and permeability in a
frequency range of visible light. We calculate the attenuated total reflection (ATR) spectra of the LHM slab by use of
the transfer matrix method. The spectra of different cases with various slab thickness and surrounding dielectrics of the
LHM slab have been studied. The variations of SP resonance wavenumber and the corresponding resonance strength are
discussed from the results of calculated ATR spectra.