Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Yasuo Sakane"'
Publikováno v:
IEEE Transactions on Magnetics. 50:1-4
In this paper, we sought to determine if, during ultraviolet (UV) exposure, the external electric field could control the bonded lubricant thickness. During UV irradiation, the effect of the external electric field on both the bonded lubricant thickn
Publikováno v:
Tribology Letters. 62
Our previous study confirmed that the photoelectron-assisted ultraviolet (UV) irradiation with a bias voltage between the magnetic disk and the counter electrode above the disk surface increased the bonded ratio of a perfluoropolyether lubricant film
Autor:
Keisuke Nagato, Noriaki Toyoda, Tomokazu Hirota, Yasuo Sakane, Hiroshi Tani, Tetsuya Hamaguchi, Isao Yamada, Masayuki Nakao
Publikováno v:
IEEE Transactions on Magnetics. 45:3503-3506
The planarization of the bit-patterned surface using gas cluster ion beams (GCIBs) was studied. By applying the features of gas cluster ions, such as low-energy irradiation and surface smoothing effects, it is possible to carry out effective smoothin
Autor:
Masayuki Nakao, Hiroshi Tani, Noriaki Toyoda, Yasuo Sakane, Tetsuya Hamaguchi, Keisuke Nagato, Isao Yamada
Publikováno v:
IEEE Transactions on Magnetics. 44:3476-3479
We studied planarization of carbon overcoat by gas cluster ion beam (GCIB) for discrete track magnetic disks. We fabricated discrete tracks with variant pitches by focused ion beam on a 30-nm-thick carbon overcoat deposited on magnetic disks, and we
Publikováno v:
Journal of Polymer Science Part B: Polymer Physics. 43:79-86
Graft copolymers consisting of amorphous main chain, poly(methyl methacrylate) (PMMA), or poly(methyl acrylate) (PMAc), and crystalline side chains, poly(ethylene glycol) (PEG), have been prepared by copolymerization of PEG macromonomers with methyl
Autor:
Noriaki Toyoda, Hiroki Naito, Hiroshi Tani, Hiroaki Hoshino, Tetsuya Hamaguchi, Keisuke Nagato, Masayuki Nakao, Yasuo Sakane, Tomokazu Hirota, Isao Yamada
Publikováno v:
IEEE Transactions on Magnetics. 46:2504-2506
We studied Ar gas cluster ion beam (GCIB) planarization effect on patterned surfaces refilled with Cr, Ta and SiO2. The patterns of 20 nm in depth were fabricated on Si substrate by using electron beam lithography and CHF3 -reactive-ion-etching. The
Publikováno v:
IEEE Transactions on Magnetics. 46:1464-1466
Irradiations of gas cluster ion beams (GCIB) on amorphous carbon films formed with chemical vapor deposition (CVD) were performed, and the affinity with lubricant was studied. The surface roughness of as-deposited amorphous CVD carbon film was improv
Publikováno v:
Bulletin of the Chemical Society of Japan. 64:1738-1742
Gaseous mixtures of HNCO and NO diluted in Ar were heated by incident shock waves to about 3500 K to investigate the bimolecular reaction of NH(3Σ−) with NO. Ultraviolet emissions from the excited NH(A3II) and OH(A2Σ+) were monitored to determine
Publikováno v:
The Proceedings of Mechanical Engineering Congress, Japan. 2015:S1620101
Autor:
Tetsuya Hamaguchi, Noriaki Toyoda, Hiroki Naito, Yasuo Sakane, Hiroshi Tani, Masayuki Nakao, Keisuke Nagato, Isao Yamada
Publikováno v:
Journal of Applied Physics. 109:07B733
We studied the effect of the duty ratio, i.e., the ratio of hill width to pitch, of patterned diamondlike carbon (DLC) surfaces on Ar gas cluster ion beam (GCIB) planarization effect. The patterns of 40 nm depth were fabricated on Si substrates by el