Fabrication of Low‐Threshold 3D Void Structures inside a Polymer Matrix Doped with Gold Nanorods |
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Authors: | Kyongsik Choi Peter Zijlstra James W M Chon Min Gu |
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Affiliation: | Centre for Micro‐Photonics, Faculty of Engineering and Industrial Sciences, Swinburne University of Technology, P. O. Box 218 Hawthorn, Victoria 3122 (Australia) |
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Abstract: | We report on a low‐threshold three‐dimensional (3D) void generation inside a polyvinyl‐alcohol (PVA) polymer matrix doped with gold nanorods (NRs) by near infra red femtosecond laser pulses. By matching the laser wavelength to the surface plasmon resonance band of the embedded gold NRs, the void generation threshold could be reduced by one order of magnitude lower than undoped matrix. We discuss physical mechanisms involved in the void generation, where distinction between the decomposition of gold NR or PVA is drawn in single pulse and multiple pulse irradiations. We also demonstrate 3D void recording for applications in 3D optical data storage. |
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Keywords: | data storage metallic nanoparticles polymer composite nanodevices surface plasmon resonance ultrashort pulse laser phenomena |
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