| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2011: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2010: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2009: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Research Abstract |
I present a novel laser processing technique that enables us to form nanoholes(d<100 nm) on a polymer film. The important feature of the present technique is the utilization of a hybrid target, which contains a polymer and gold nanoparticles. The Au nanoparticles were fixed to a glass substrate(avoiding aggregation of the nanoparticles) by a technique involving a self-assembled monolayer of 3-aminopropyltrimethoxysilane. The film was coated with a thin film of poly(methyl acrylate) and then irradiated with a nanosecond 532 nm pulsed laser light. The light excited the resonant plasmon absorption band of the Au nanoparticles. Subsequently, the particles underwent explosive vaporization via a superheated state, resulting in the formation of nanoholes within the film. In addition, it is noted that these nanohole shape depend on the gold nanoparticles size, the kinds of polymer, the film thickness, and the irradiation laser fluence.
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