Enhanced Fluorescence from Periodic Arrays of Silver Nanoparticles |
| |
| Authors: | T?D?Corrigan S?Guo R?J?Phaneuf Email author" target="_blank">H?SzmacinskiEmail author |
| |
| Institution: | (1) Department of Materials Science and Engineering, University of Maryland and Laboratory for Physical Sciences, College Park, Maryland;(2) Microcosm Inc., Columbia, Maryland |
| |
| Abstract: | Electron beam lithography was used to fabricate silver nanoparticle arrays and study the effects of geometrical properties
of particles on metal-enhanced fluorescence. Nanoparticle size, shape, interparticle spacing, and nominal thickness were varied
in a combinatorial pattern for investigation of the particle plasmon resonance effect on enhancement of fluorescence from
three different fluorophores; Fluorescein, Cy3, and Cy5. A specific geometric property for optimal enhancement from each fluorophore
was determined. For interparticle spacings greater or equal to 270 nm, the enhancement matched what is expected for a single-particle
model. For those particles smaller than 210 nm, the enhancement was lower than for the larger spacing in the range studied.
Triangular-shaped particles gave similar enhancement to those of square-shaped particles. This combinatorial pattern by e-beam
lithography was found to be useful for studying how individual parameters enhance the fluorescence that are important for
rational design of enhanced fluorescence sensors. |
| |
| Keywords: | Fluorescence particle plasmon resonance electron-beam lithography metallic nanoparticles Cy3 Cy5 |
| 本文献已被 PubMed SpringerLink 等数据库收录！ |
|
