Self-assembled, ordered gold nanocrystal/silica thin films for prism-based surface plasmon resonance sensors.

Conference · Mon Nov 01 00:00:00 EST 2004

OSTI ID:965107

Yang, Kai ^[1]; Fan, Hongyou; Brinker, C Jeffrey; Sheik-Bahae, Mansoor ^[1]; Malloy, Kevin J ^[1]; Lopez, Gabriel P; O'Brien, Michael J ^[1]; Sigmon, Thomas ^[1]

---

1. University of New Mexico, Albuquerque, NM

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 {approx}520 nm. Angular excitation spectra of surface plasmon show a steep dip in the reflectivity curve at {approx}65{sup o} 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.

• Research Organization: Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 965107
• Report Number(s): SAND2004-6136C; TRN: US0903581
• Resource Relation: Conference: Proposed for presentation at the 2005 Conference on Lasers and Electro-Optics/Quantum Electronics & Laser Science held May 22-27, 2005 in Baltimore, MD.
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ABSORPTION
EXCITATION
GOLD
LASERS
PLASMONS
PROCESSING
REFLECTIVITY
REFRACTIVE INDEX
RESONANCE
RESONANCE ABSORPTION
SILICA
SPECTRA
THICKNESS
THIN FILMS