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Amorphous nanostructuralization in HOPG by 10(14) W cm(-2) laser
Author
Nishimura, YasuhikoKitagawa, Yoneyoshi
Mori, Yoshitaka
Ishii, Katsuhiro
Hanayama, Ryohei
Azuma, Hirozumi
Hioki, Tatsumi
Nishi, Teppei
Motohiro, Tomoyoshi
Komeda, Osamu
Sekine, Takashi
Sato, Nakahiro
Kurita, Takashi
Kawashima, Toshiyuki
Kan, Hirofumi
Sunahara, Atsushi
Sentoku, Yasuhiko
Miura, Eisuke
Date
2016Type
ArticleAbstract
This reports provide an amorphous nanostructuralization technique on the surface modification in Highly Oriented Pyrolytic Graphite (HOPG) by using a femtosecond laser. We showed, for the first time, that the surface of HOPG is changed to the amorphous nanostructuralization graphite by using a femtosecond laser-driven compression technique. Our results also suggest that the HOPG surface is changed until the deeper area from the surface by the laser-driven shock wave. A single shot of a femtosecond laser beam (1.27,similar to,1.33x10(14) W cm(-2) in intensity, with 2mm-diameter, and 110 fs in pulse width) is irradiated under the vacuum ambience onto a 2mm-thick of HOPG. The calculated impact pressures on a sample was 8.3 similar to 8.7 GPa. Crystal structure in the HOPG were analyzed using a Raman spectroscopy and an X-ray diffraction, those analyzing depth from the surface were 50 nm and 350pm, respectively.
Permanent link
http://hdl.handle.net/11714/6380Additional Information
Journal Title | 9th International Conference on Inertial Fusion Sciences and Applications (ifsa 2015) |
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Rights | Creative Commons Attribution 3.0 Unported |
Rights Holder | Authors |