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3D stacking of plasmonic nanostructures is achieved using a solvent‐assisted nanotransfer printing (S‐nTP) technique to provide extremely dense and regular hot spot arrays for highly sensitive surface‐enhanced Raman spectroscopy (SERS) analysis. Moreover, hybrid plasmonic nanostructures obtained by printing the nanowires on a continuous metal film or graphene surface show significantly intensified...
Maxwell-Garnett effective medium theory (MG-EMT) has been employed to model disk shaped nanoporous gold nanoparticles (NPG nanoparticles or NPG Disks). Optical properties of these nanoparticles have been calculated using the proposed model via Finite Difference Time Domain (FDTD) method. Calculated optical properties reflect strong dependence on particle dimensions. The resonant extinction wavelength...
The mode profile of a holey index guided 2-Dimensional triangular lattice Photonic Crystal Fiber (PCF) is investigated using the effective index model of PCF. The effect of variation in air hole diameter, of a constant lattice size, on the mode profile is analyzed for getting the Fundamental Space- Filling Mode (FSM).
A Wavelength Division De-multiplexer has been proposed based on a hexagonal lattice 2D photonic crystal structure. The structure has been designed using GaAs rods, dielectric constant 11.4, which are suspended in air. The device has been proposed for De-multiplexing two wavelengths of 1.31 µm and 1.55 µm. The Plane Wave Expansion method and the Finite Difference Time Domain method have been utilized...
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