Fast Fabrication of a Ag Nanostructure Substrate Using the Femtosecond Laser for Broad-Band and Tunable Plasmonic Enhancement

Using a femtosecond laser, we have transformed the laser-direct-writing technique into a highly efficient method that can process AgO x thin films into Ag nanostructures at a fast scanning rate of 2000 μm2/min. The processed AgO x thin films exhibit broad-band enhancement of optical absorption and e...

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Veröffentlicht in:	ACS nano 2012-06, Vol.6 (6), p.5190-5197
Hauptverfasser:	Tseng, Ming Lun, Huang, Yao-Wei, Hsiao, Min-Kai, Huang, Hsin Wei, Chen, Hao Ming, Chen, Yu Lim, Chu, Cheng Hung, Chu, Nien-Nan, He, You Je, Chang, Chia Min, Lin, Wei Chih, Huang, Ding-Wei, Chiang, Hai-Pang, Liu, Ru-Shi, Sun, Greg, Tsai, Din Ping
Format:	Artikel
Sprache:	eng
Schlagworte:	Beads Crystallization - methods Femtosecond Gold - chemistry Gold - radiation effects Hot spots Lasers Macromolecular Substances - chemistry Macromolecular Substances - radiation effects Materials Testing Molecular Conformation - radiation effects Molecular Imprinting - methods Nanoparticles - chemistry Nanoparticles - radiation effects Nanoparticles - ultrastructure Nanostructure Particle Size Plasmonics Scanning Silver Surface Plasmon Resonance - methods Surface Properties - radiation effects Thin films
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Zusammenfassung:	Using a femtosecond laser, we have transformed the laser-direct-writing technique into a highly efficient method that can process AgO x thin films into Ag nanostructures at a fast scanning rate of 2000 μm2/min. The processed AgO x thin films exhibit broad-band enhancement of optical absorption and effectively function as active SERS substrates. Probing of the plasmonic hotspots with dyed polymer beads indicates that these hotspots are uniformly distributed over the treated area.
ISSN:	1936-0851 1936-086X
DOI:	10.1021/nn300947n