徳島大学 教育・研究者情報データベース(EDB)

1. 橋本 修一

   役割	任意
   貢献度	任意
   学籍番号	推奨

(英) Surface modification of glass substrate assisted by pulsed-laser fragmentation of gold nanoparticles

(日) 金ナノ粒子を利用したガラスのレーザー表面改質

(英) This paper describes the single-shot pulsed laser induced modification of a glass surface assembled with gold nanoparticles or fabricated with gold nanostructures. At laser fluences above the fragmentation threshold, nanoholes were prepared, the number of which increased depending critically on the fluence applied. The size and shape of nanoholes were dependent on the pulse width: while femtosecond laser irradiation allowed the formation of shapes similar to the original nanostructure, irradiation by nanosecond laser generated nanoholes smaller in size than the structure. The fluence and pulse width dependent difference was explained in the light of fragmentation mechanism underlying the structuring. Femtosecond laser irradiation causes the Coulomb explosion whereas the nanosecond laser irradiation results in the photothermal evaporation based size reduction.

1. (英) gold nanoparticle, plasmon resonance, glass, pulsed laser, surface modification, laser ablation / (日) 金ナノ粒子, プラズモン共鳴, ガラス, パルスレーザー, 表面改質, レーザーアブレーション