Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Yoichi Hirayama"'
Autor:
Kuniyasu Nakamura, Hiroyuki Tanaka, Keitaro Watanabe, Mitsuru Konno, Takahiro Sato, Takahito Hashimoto, Keiji Tamura, Yoshihiro Ohtsu, Kazutoshi Kaji, Takeharu Shichiji, D. Terauchi, Wataru Shimoyama, Hiromi Inada, Koichiro Saito, Ryoji Namekawa, Yuya Suzuki, Yoichi Hirayama
Publikováno v:
Applied Microscopy. 45:1-8
Publikováno v:
Japanese Journal of Applied Physics. 45:792-797
We report the ablation of crystalline iron (Fe) by a femtosecond laser examined both experimentally and theoretically. Laser ablation of Fe is investigated theoretically by a molecular dynamics (MD) simulation model. In the model, the electron system
Autor:
Minoru Obara, Yoichi Hirayama
Publikováno v:
Applied Surface Science. :741-745
Heat effects of metallic bulk crystals of Au, Ag, Cu, and Fe ablated with femtosecond Ti:sapphire laser pulses is experimentally studied. As a result of X-ray diffraction (XRD) measurements, the XRD peak signal of the area ablated with Ti:sapphire la
Publikováno v:
Journal of Applied Physics. 89:2943-2949
The microsecond, nanosecond, and femtosecond laser ablation of AlN ceramic with a transversely excited atmospheric (TEA) CO2 laser, KrF excimer laser, and Ti:sapphire laser is demonstrated. It is shown that the laser-induced thermal decomposition pro
Autor:
Tetsumi Watanabe, Takeyoshi Nakayama, Kazuyuki Okada, Takaomi Matsutani, Kensuke Murai, Y Maezono, H Yanagita, K Nishi, J Miyano, null Yokotani, K Kurosawa, W Sasaki, N Hishinumac, H Matsuno, H Yuasa, M Okoshi, N Inoue, Y Watanabe, M Kuramatsu, Y KAWAKAMI, E OZAWA, Minoru UEHARA, Toshiyuki ITO, Shouzaburo TOYODA, Yukio IWASAKI, Kunio HARA, Hidehiko MIYAO, Masahiro Tsukamoto, Manabu Tanaka, Nobuyuki Abe, Kazuhiro Nakata, Masao Ushio, Choijil Baasandash, Jun MAEHARA, Masamiti NAKAGAWA, Takashi YABE, Masashi Iwamoto, Hajime Ebisutani, Noriyo Sakurada, Yoshio Ishii, Kazuhiro Watanabe, Yuzuru Kubota, K. Tokumura, T. Jitsuno, M. Nakatsuka, S. Motokoshi, H. Tamamura, N. Aoki, K. Sugioka, K. Obata, T. Akane, T. Takahashi, S. H. Cho, H. Kumagai, K. Toyoda, K. Midorikawa, M. Mizumachi, K. Suzuki, M. Toda, M. Murahara, E. Fujiwara, T. Hino, M. Yatsuzuka, K. Yoshida, A. Nishiguchi, Toshihiko Ooie, Mayumi Tode, Yasuo Takagawa, K. Takahashi, T. Yoneyama, M. Osawa, Katsunori Tsunoda, Daisuke Kumaki, Hirofumi Yajima, Tadahiro Ishii, Haruo Kawai, S. Ohta, H. Nagata, H. Yoneda, K. Ueda, Richard More, Toshihara Makino, Yuka Yamada, Nobuyasu Suzuki, Takahito Yoshida, Seinosuke Onari, Yoshiki Nakata, Tatsuo Okada, Mitsuo Maeda, Tomomasa Ohkubo, Masahiro Kuwata, Boris Luktyanchuk, T. Otubo, J. Mune, Y. Katuta, S. Kubodera, Hiroyuki Niino, Tadatake Sato, Akiko Narazaki, Akira Yabe, T. Tsuchiya, A. Watanabe, Y. Imai, I. Yamaguchi, T. Manaba, T. Kumagai, S. Mizuta, Tomoyuki Shimoda, Kosuke Takahashi, Minoru Obara, I. Nagata, S. Jogan, M. Enomoto, Masaru Kawarazaki, K. Kawahara, Hiroyuki Furukawa, Masaki Hashida, Yoichi Hirayama, Kazue Ozono, S. Koito, K. Shihoyama, M. Kawachi, S. Souma, Manabu Taniwaki, Fumio Kokai, Akiko Goto, Yoshinori Koga, A. Masagaki, M. Miyazawa, Sadao Higuchi, Kiyotaka Ueda, Y. Ishida, S. Fukaya, Y. Ogawa, H. Ohmuro, Y. Sato, H. Tokunaga, M. Yamanaka, Kouki Shimizu, Katsuaki Ohashi, Kiyoshi Kurosawa, Takashi Katagiri, Yuji Matsuura, Mitsunobu Miyagi, Takashi Yamamoto, Goro Takada, M. YODA, N. MUKAI, T. UEHARA, Y. SANO, N. SUEZONO, K. HIROTA, K. MIYAZATO, Fabien Barnier
Publikováno v:
The Review of Laser Engineering. 29:99-101,104
Autor:
Minoru Obara, Yoichi Hirayama
Publikováno v:
Commercial and Biomedical Applications of Ultrafast Lasers V.
Femtosecond laser ablation of materials with high thermal conductivity is of paramount importance, because the chemical composition and properties of the area ablated with femtosecond laser are kept unchanged. The material processing by femtosecond l
Autor:
Minoru Obara, Yoichi Hirayama
Publikováno v:
SPIE Proceedings.
The melted area is found on the surface ablated by nanosecond and picosecond laser pulses. However, the heat effect is little on the ablated surface in the case of femtosecond laser due to non-thermal ablation process. Heat-affected zone of metallic
Autor:
Yoichi Hirayama, Minoru Obara
Publikováno v:
SPIE Proceedings.
Ablation of cubic-boron nitride (c-BN) and hexagonal-boron nitride (h-BN) ceramics irradiated with Ti:sapphire laser (110fs) and Nd:YAG laser (100ps) pulses is studied. The relationship between ablation rate and laser fluence for the Nd:YAG laser sho
Publikováno v:
Proceedings of SPIE.
In this study, the new material processing characteristic of aluminum nitride (AlN) ceramic is compared with microsecond, nanosecond and femtosecond laser ablation. The conventional laser material processing technology with longer pulsewidth laser su
Functional material processing using intense femtosecond, nanosecond, and microsecond laser ablation
Autor:
Yong Pyung Kim, Kentaro Furusawa, Kousuke Takahashi, Hiroyuki Yabe, Fabien Barnier, Minoru Obara, Yoichi Hirayama
Publikováno v:
Proceedings of SPIE.
The new material processing characteristic of aluminum nitride (AlN) ceramic is compared with microsecond, nanosecond and femtosecond laser ablation. The conventional laser material processing technology with longer pulsewidth laser such as TEA CO2 l