2825 エキシマレーザによる生分解性ポリマー製ニードルへのマイクロ穴加工(S08-1 微小機械設計・開発のための実験力学の新展開(1),S08 微小機械設計・開発のための実験力学の新展開)

概要

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A microneedle made of biodegradable polymer material (Poly lactic acid, called as PLA) is fabricated by micromolding method, and a hole of high aspect ratio (diameter 10μm, length 1mm) is fabricated on this needle by using an excimer laser beam. A phenomenon is observed that the inside of hole is clogged at several points by ablated material and outing gases. Same laser fabrication is preformed on other polymer materials of Parylene, PDMS (Polydimethylsiloxane), Epoxy, Nylon, PMMA (Polymethylmethacrylate), PC (Polycarbonate), PS (Polystyrene): however, this phenomenon of clogging is not observed, which indicates this phenomenon is peculiar to PLA material.
2007-09-07