Gold and Silver Nanowires for Fluorescence Enhancement

25 page(s

Propagating Surface Plasmons and Dispersion Relations for Nanoscale Multilayer Metallic-Dielectric Films

22 page(s

Nanoparticle fluorescence probes

24 page(s

Effect of growth temperature of the confinement layer on cathodoluminescence properties of GaSb/GaAs quantum dot multilayer structures

4 page(s

Deposition of silver dentritic nanostructures on silicon for enhanced fluorescence

Silver dendritic (“fractal”) structures exhibit very high fluorescence enhancement, but their nonuniformity limits practical applications. Here, we present a novel, electroless deposition approach to produce uniform silver dendritic nanostructures on silicon for enhanced fluorescence. These metal-modified surfaces were allowed to bind a protein bovine serum albumin (BSA) labeled with the fluorescent dye Deep Purple. The effect of silver nanostructures on fluorescence intensity and lifetime in the presence of a conductive, absorbing substrate was analyzed, and high enhancement factors between 30 and 40 times were found. Such silicon-based structures with high fluorescence enhancement factors are suitable for integration with lab-on-chip and biosensing microelectronic devices.8 page(s

A method to assess modifications of fluorophore radiative rate by plasmonic structures

3 page(s

Extreme sensitivity of the optical properties of metal nanostructures to minor variations in geometry is due to highly localized electromagnetic field modes

Optical extinction of silver nanostructures produced by electron beam lithography has been modeled by a finite element method. While the simulations of the design geometry produce results that are markedly at odds with the experiment, subtle variations of the shape, such as rounding of structure edges, are able to bring the simulations in agreement with experiment. We present the effect of various aspects of structure geometry on the evolution of electromagnetic field modes. They are highly localized at the sharp edges and sides and strongly affected by minor shape variations such as edge rounding. This work demonstrates that optical absorption/extinction provides a simple and sensitive indication of subtle morphology features in metal nanostructures.7 page(s

Enhanced flow cytometry-based bead immunoassays using metal nanostructures

8 page(s