title: Engineering the plasmon resonance of large area bimetallic nanoparticle films by laser nanostructuring for chemical sensors.
abstract: Large area fabrication of metal alloy nanoparticles with tunable surface plasmon resonances on low-cost substrates is reported. A UV excimer laser was used to anneal 5 nm thick Ag Au bilayer films deposited with different composition ratios to create alloy nanoparticles. These engineered surfaces are used to investigate how the wavelength of the surface plasmon resonance affects the optical detection capability of chemical species by surface-enhanced Raman spectroscopy.
authors.affiliation: Nano-Electronics Centre, Advanced Technology Institute, University of Surrey, Guildford, GU2 7XH, UK.
authors.forename: Michail J
authors.initials: MJ
authors.lastname: Beliatis
authors.forename: Simon J
authors.initials: SJ
authors.lastname: Henley
authors.forename: S Ravi P
authors.initials: SR
authors.lastname: Silva
mesh_terms: D000497:Alloys / Q000737:chemistry*; D002623:Chemistry Techniques, Analytical / Q000295:instrumentation*; D006046:Gold / Q000737:chemistry; D007834:Lasers; D053768:Metal Nanoparticles / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods*; D012834:Silver / Q000737:chemistry; D013059:Spectrum Analysis, Raman; D020349:Surface Plasmon Resonance / Q000379:methods*
chemical_list: D000497:Alloys; D012834:Silver; D006046:Gold