1-2hit |
Osamu WATANABE Taiji IKAWA Makoto HASEGAWA Masaaki TSUCHIMORI Yoshimasa KAWATA Chikara EGAMI Okihiro SUGIHARA Naomichi OKAMOTO
Topographical changes induced by optical near-field around photo-irradiated nanoparticles were attained using a pulsed laser with a large peak power as a light source. The arrayed structure of nanoparticles was transcribed on urethane-urea azo copolymer film as dent structure. The experiments by the pulsed laser of different wavelength showed that the topographical change was caused by the light absorption. The dent diameter and the dent depth changed depending on the diameter of nanoparticles.
Taiji IKAWA Chang-Dae KEUM Hideki TAKAGI Masaaki TSUCHIMORI Osamu WATANABE Wataru MORI Masaya HARADA Masahiro TAWATA Hiroshi SHIMOYAMA
The optical recording on an azopolymer surface by the optical fiber probe with a 100 nm diameter aperture was demonstrated. The 150 nm diameter pit was formed by the optical fiber probe coupled with a 50 ns pulse of 10 mW and 488 nm wavelength coherent light.