11 September 2013 Femtosecond laser induced surface melting and nanojoining for plasmonic circuits
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Femtosecond laser induced nonthermal processing is an emerging nanofabrication technique for delicate plasmonic devices. In this work we present a detailed investigation on the interaction between ultra-short pulses and silver nanomaterials, both experimentally and theoretically. We systematically study the laser-silver interaction at a laser fluent from 1 J/m2 to 1 MJ/m2. The optimal processing window for welding of silver nanowires occurs at fluences of 200-450 J/m2. The femtosecond laser-induced surface melting allows precise welding of silver nanowires for "T” and “X” shape circuits. These welded plasmonic circuits are successfully applied for routining light propagation.
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A. Hu, A. Hu, G. L. Deng, G. L. Deng, S. Courvoisier, S. Courvoisier, O. Reshef, O. Reshef, C. C. Evans, C. C. Evans, E. Mazur, E. Mazur, Y. Zhou, Y. Zhou, "Femtosecond laser induced surface melting and nanojoining for plasmonic circuits", Proc. SPIE 8809, Plasmonics: Metallic Nanostructures and Their Optical Properties XI, 880907 (11 September 2013); doi: 10.1117/12.2022482; https://doi.org/10.1117/12.2022482

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