Gold nanocrystal(NC)/silica films are synthesized through self-assembly of water-soluble gold nanocrystal micelles and silica by sol-gel processing. Absorption and transmission spectra show a strong surface plasmon resonance absorption peak at /spl sim/520 nm. Angular excitation spectra of surface plasmon show a steep dip in the reflectivity curve at /spl sim/65/spl deg/ depending on the thickness and refractive index of the gold NC/silica film. A potential SPR sensor with enhanced sensitivities can be realized based on these gold NC/silica films.
Self-assembled, ordered gold nanocrystal/silica thin films for prism-based surface plasmon resonance sensors
2005 Quantum Electronics and Laser Science Conference ; 2 ; 1082-1084 Vol. 2
2005-01-01
1527181 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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