Gold nanoparticles assembly on silver nanowires surface for potential Raman-based sensor

PMSE 416

Ray Gunawidjaja, rayguna@gatech.edu, Sergiy Peleshanko, sergiy.peleshanko@hp.com, Hyunhyub Ko, hko3@gatech.edu, Dmitry Zimnitsky, and Vladimir V. Tsukruk. School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive, NW, Atlanta, GA 30332-0245
An effective nanoparticles-based surface enhanced Raman substrate is often related to electromagnetic hot spots of particles aggregates, cross-junctions, or certain features of non-spherical particles. Organic molecules within close proximity to these nanoparticles experience Raman signal enhancement. This phenomenon is amplified when the organic molecules are trapped between two adjacent nanoparticles within a close-enough range. Hybrid nanoparticles are becoming widespread in the design of nanoparticles-based Raman substrate due to the coupled Plasmon band effect, or broadening of the Plasmon resonance peak. Here, we report the design of silver nanowires-gold nanoparticles hybrid system covalently bridged together by star polymer linker.
 

Synthesis and Self-Assembly Approaches to Polymer-Inorganic Hybrid Nanoparticles
1:30 PM-4:10 PM, Wednesday, April 9, 2008 Hilton New Orleans Riverside -- Grand Salon 24, Oral

Division of Polymeric Materials: Science & Engineering

The 235th ACS National Meeting, New Orleans, LA, April 6-10, 2008