Laser direct write of silver nanoparticles from solution onto glass substrates for surface-enhanced Raman spectroscopy | Zendy

S. J. Henley | Zendy; S. Ravi P. Silva | Zendy

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Laser direct write of silver nanoparticles from solution onto glass substrates for surface-enhanced Raman spectroscopy

Author(s) -

S. J. Henley,

S. Ravi P. Silva

Publication year - 2007

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.2753090

Subject(s) - rhodamine 6g , materials science , silver nanoparticle , raman spectroscopy , laser , surface enhanced raman spectroscopy , nanoparticle , surface modification , irradiation , substrate (aquarium) , laser ablation , laser power scaling , analytical chemistry (journal) , optoelectronics , chemical engineering , optics , nanotechnology , raman scattering , chemistry , oceanography , physics , engineering , chromatography , geology , nuclear physics , fluorescence

A solution based laser direct write technique for patterning of glass substrates with silver nanoparticles is presented. Photoreduction of an AgNO3 solution, by nanosecond UV laser pulses, produces a source solution of silver particles. A glass substrate is then inserted into this solution and the laser is scanned over its surface. Laser-induced fragmentation of the silver particles in the solution, assisted by the melting of the glass surface, produces coatings of silver nanoparticles in the laser-irradiated regions. Strong enhancement of the Raman signal from a dilute Rhodamine 6G analyte confirmed that these substrates are suitable for surface-enhanced Raman measurements.

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