Keishi Ohashi

上級研究員(研究院教授)

  • 1677 Citations
  • 20 h-Index
1979 …2020

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1979

Magnetic aftereffect due to domain wall motion in amorphous Tb-Fe sputtered films

Ohashi, K., Takagi, H., Tsunashima, S., Uchiyama, S. & Fujii, T., 1979 Dec 1, In : Journal of Applied Physics. 50, B3, p. 1611-1613 3 p.

Research output: Contribution to journalArticle

16 Citations (Scopus)
1980

Magnetic after-effect in amorphous Tb–Fe thin films

Ohashi, K., Tsuji, H., Tsunashima, S. & Uchiyama, S., 1980 Jul, In : Japanese journal of applied physics. 19, 7, p. 1333-1338 6 p.

Research output: Contribution to journalArticle

18 Citations (Scopus)
1985

Mechanism of 90° wall motion in thin film heads

Ohashi, K., 1985 Sep, In : IEEE Transactions on Magnetics. 21, 5, p. 1581-1583 3 p.

Research output: Contribution to journalArticle

24 Citations (Scopus)
1994

Magnetization dynamics in thin film heads

Ohashi, K., 1994 Jun, In : Journal of Magnetism and Magnetic Materials. 134, 2-3, p. 262-267 6 p.

Research output: Contribution to journalArticle

1 Citation (Scopus)
1998

An Advanced Magneto-Resistive Head with a Newly Developed Electroplated High-B s Write Pole

Gokan, H., Toki, K., Ohashi, K., Maruyama, T., Abe, M. & Mizuno, S., 1998 Jul 1, In : NEC Research and Development. 39, 3, p. 309-315 7 p.

Research output: Contribution to journalArticle

1 Citation (Scopus)

A soft magnetic CoNiFe film with high saturation magnetic flux density and low coercivity

Osaka, T., Takai, M., Hayashi, K., Ohashi, K., Saito, M. & Yamada, K., 1998 Apr 23, In : Nature. 392, 6678, p. 796-798 3 p.

Research output: Contribution to journalArticle

306 Citations (Scopus)
1999

Corrosion properties of electroplated CoNiFe films

Saito, M., Yamada, K., Ohashi, K., Yasue, Y., Sogawa, Y. & Osaka, T., 1999 Aug, In : Journal of the Electrochemical Society. 146, 8, p. 2845-2848 4 p.

Research output: Contribution to journalArticle

39 Citations (Scopus)

Influence of crystalline structure and sulfur inclusion on corrosion properties of electrodeposited CoNiFe soft magnetic films

Osaka, T., Takai, M., Sogawa, Y., Momma, T., Ohashi, K., Saito, M. & Yamada, K., 1999 Jun, In : Journal of the Electrochemical Society. 146, 6, p. 2092-2096 5 p.

Research output: Contribution to journalArticle

58 Citations (Scopus)

Write performance of heads with a 2.1-tesla conife pole

Ohashi, K., Morita, N., Tsuda, T. & Nonaka, Y., 1999 Dec 1, In : IEEE Transactions on Magnetics. 35, 5 PART 1, p. 2538-2540 3 p.

Research output: Contribution to journalArticle

30 Citations (Scopus)
2000

Ultra-high-density magnetic information storage technologies

Ohashi, K., Ishiwata, N., Yanagisawa, M., Sato, A., Tsuboi, S. & Hokkyo, H., 2000 Apr 1, In : NEC Research and Development. 41, 2, p. 160-165 6 p.

Research output: Contribution to journalArticle

2002

Evaluation of the crystal structure, film properties, and Bs of electroplated CoNiFe films

Saito, M., Ishiwata, N. & Ohashi, K., 2002 Dec 1, In : Journal of the Electrochemical Society. 149, 12, p. C642-C647

Research output: Contribution to journalArticle

15 Citations (Scopus)

Nano-storage technology and electroplating, large magnetic moment of Co-Fe-Ni

Ohashi, K., 2002 Nov, In : Electrochemistry. 70, 11, p. 884-888 5 p.

Research output: Contribution to journalArticle

Open Access
2003

Electro-optical properties of (Pb, La)(Zr, Ti)O3 films prepared by aerosol deposition method

Nakada, M., Ohashi, K., Lebedev, M. & Akedo, J., 2003 Sep 1, In : Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers. 42, 9 B, p. 5960-5962 3 p.

Research output: Contribution to journalArticle

20 Citations (Scopus)

Enhanced nonlinear optical conversion from a periodically nanostructured metal film

Nahata, A., Linke, R. A., Ishi, T. & Ohashi, K., 2003 Mar 15, In : Optics Letters. 28, 6, p. 423-425 3 p.

Research output: Contribution to journalArticle

173 Citations (Scopus)
2004
8 Citations (Scopus)
2005
14 Citations (Scopus)

Electro-optic properties of Pb(Zr1-xTix)O 3 (X = 0, 0.3, 0.6) films prepared by aerosol deposition

Nakada, M., Ohashi, K. & Akedo, J., 2005 Aug 26, In : Japanese Journal of Applied Physics, Part 2: Letters. 44, 33-36, p. L1088-L1090

Research output: Contribution to journalArticle

22 Citations (Scopus)

Excitonic molecule in a quantum dot: Photoluminescence lifetime of a single InAs GaAs quantum dot

Kono, S., Kirihara, A., Tomita, A., Nakamura, K., Fujikata, J., Ohashi, K., Saito, H. & Nishi, K., 2005 Oct 15, In : Physical Review B - Condensed Matter and Materials Physics. 72, 15, 155307.

Research output: Contribution to journalArticle

15 Citations (Scopus)

Large optical transmission through a single subwavelength hole associated with a sharp-apex grating

Ishi, T., Fujikata, J. & Ohashi, K., 2005 May 2, In : Japanese Journal of Applied Physics, Part 2: Letters. 44, 1-7, p. L170-L172

Research output: Contribution to journalArticle

23 Citations (Scopus)

Si nano-photodiode with a surface plasmon antenna

Ishi, T., Fujikata, J., Marita, K., Baba, T. & Ohashi, K., 2005 Jun 24, In : Japanese Journal of Applied Physics, Part 2: Letters. 44, 12-15, p. L364-L366

Research output: Contribution to journalArticle

293 Citations (Scopus)

Strong influence of surface structures on enhanced transmission through subwavelength hole arrays

Ishihara, K. & Ohashi, K., 2005 Dec 1, In : Japanese Journal of Applied Physics, Part 2: Letters. 44, 28-32, p. L973-L975

Research output: Contribution to journalArticle

2 Citations (Scopus)

Terahertz near-field imaging using enhanced transmission through a single subwavelength aperture

Ishihara, K., Ikari, T., Minamide, H., Shikata, J. I., Ohashi, K., Yokoyama, H. & Ito, H., 2005 Dec 1, In : Japanese Journal of Applied Physics, Part 2: Letters. 44, 28-32, p. L929-L931

Research output: Contribution to journalArticle

34 Citations (Scopus)

Terahertz wave enhanced transmission through a single subwavelength aperture with periodic surface structures

Ishihara, K., Hatakoshi, G. I., Ikari, T., Minamide, H., Ito, H. & Ohashi, K., 2005 Dec 1, In : Japanese Journal of Applied Physics, Part 2: Letters. 44, 28-32, p. L1005-L1007

Research output: Contribution to journalArticle

21 Citations (Scopus)
2006

Terahertz-wave near-field imaging with subwavelength resolution using surface-wave-assisted bow-tie aperture

Ishihara, K., Ohashi, K., Ikari, T., Minamide, H., Yokoyama, H., Shikata, J. I. & Ito, H., 2006 Nov 23, In : Applied Physics Letters. 89, 20, 201120.

Research output: Contribution to journalArticle

75 Citations (Scopus)
2007

Aerosol deposition on transparent electro-optic films for optical modulators

Nakada, M., Tsuda, H., Ohashi, K. & Akedo, J., 2007 Jan, In : IEICE Transactions on Electronics. E90-C, 1, p. 36-40 5 p.

Research output: Contribution to journalArticle

21 Citations (Scopus)

Application of electronic devices for aerosol deposition methods

Nakada, M., Kawakami, T., Iwanami, M. & Ohashi, K., 2007 Dec 1, In : NEC Technical Journal. 2, 1, p. 76-80 5 p.

Research output: Contribution to journalArticle

3 Citations (Scopus)

Si nano-photonics innovate next generation network systems and LSI technologies

Nishi, K., Urino, Y. & Ohashi, K., 2007 Dec 1, In : NEC Technical Journal. 2, 1, p. 67-71 5 p.

Research output: Contribution to journalArticle

Ultra small electro-optic field probe fabricated by aerosol deposition

Iwanami, M., Nakada, M., Tsuda, H., Ohashi, K. & Akedo, J., 2007 Jan 25, In : ieice electronics express. 4, 2, p. 26-32 7 p.

Research output: Contribution to journalArticle

16 Citations (Scopus)

Ultra small magneto-optic field probe fabricated by aerosol deposition

Iwanami, M., Nakada, M., Tsuda, H., Ohashi, K. & Akedo, J., 2007 Sep 10, In : ieice electronics express. 4, 17, p. 542-548 7 p.

Research output: Contribution to journalArticle

4 Citations (Scopus)
2008

Low-loss silicon oxynitride waveguides and branches for the 850-nm-wavelength region

Tsuchizawa, T., Watanabe, T., Yamada, K., Fukuda, H., Itabashi, S., Fujikata, J., Gomyo, A., Ushida, J., Okamoto, D., Nishi, K. & Ohashi, K., 2008 Aug 22, In : Japanese journal of applied physics. 47, 8 PART 2, p. 6739-6743 5 p.

Research output: Contribution to journalArticle

11 Citations (Scopus)

LSI on-chip optical interconnection with Si nano-photonics

Fujikata, J., Nishi, K., Gomyo, A., Ushida, J., Ishi, T., Yukawa, H., Okamoto, D., Nakada, M., Shimizu, T., Kinoshita, M., Nose, K., Mizuno, M., Tsuchizawa, T., Watanabe, T., Yamada, K., Itabashi, S. & Ohashi, K., 2008 Feb, In : IEICE Transactions on Electronics. E91-C, 2, p. 131-137 7 p.

Research output: Contribution to journalArticle

22 Citations (Scopus)

Numerical study of near-infrared photodetectors with surface-plasmon antenna for optical communication

Okamoto, D., Fujikata, J., Nishi, K. & Ohashi, K., 2008 Apr 25, In : Japanese journal of applied physics. 47, 4 PART 2, p. 2921-2923 3 p.

Research output: Contribution to journalArticle

15 Citations (Scopus)

Optical properties of Pb(Zr,Ti)O3 films prepared by aerosol deposition

Tsuda, H., Nakada, M., Akedo, J. & Ohashi, K., 2008 May 1, In : IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 55, 5, p. 975-979 5 p., 4524970.

Research output: Contribution to journalArticle

6 Citations (Scopus)

Waveguide-integrated Si nano-photodiode with surface-plasmon antenna and its application to on-chip optical clock distribution

Fujikata, J., Nose, K., Ushida, J., Nishi, K., Kinoshita, M., Shimizu, T., Ueno, T., Okamoto, D., Gomyo, A., Mizuno, M., Tsuchizawa, T., Watanabe, T., Yamada, K., Itabashi, S. & Ohashi, K., 2008 Feb 1, In : Applied Physics Express. 1, 2, 022001.

Research output: Contribution to journalArticle

22 Citations (Scopus)
2009

Challenges and prospects for applications in the chips (LSI-Chip optical interconnection)

Kinoshita, M. & Ohashi, K., 2009 Aug 1, In : Journal of Japan Institute of Electronics Packaging. 12, 5, p. 452-457 6 p.

Research output: Contribution to journalArticle

Gigahertz-rate optical modulation on mach-zehnder plzt electro-optic modulators formed on silicon substrates by aerosol deposition

Shimizu, T., Nakada, M., Tsuda, H., Miyazaki, H., Akedo, J. & Ohashi, K., 2009 Dec 30, In : ieice electronics express. 6, 23, p. 1669-1675 7 p.

Research output: Contribution to journalArticle

3 Citations (Scopus)

Lanthanum-modified lead zirconate titanate electro-optic modulators fabricated using aerosol deposition for LSI interconnects

Nakada, M., Shimizu, T., Miyazaki, H., Tsuda, H., Akedo, J. & Ohashi, K., 2009 Dec 1, In : Japanese journal of applied physics. 48, 9 Part 2, p. 09KA061-09KA064

Research output: Contribution to journalArticle

4 Citations (Scopus)

On-chip optical interconnect

Ohashi, K., Nishi, K., Shimizu, T., Nakada, M., Fujikata, J., Ushida, J., Toru, S., Nose, K., Mizuno, M., Yukawa, H., Kinoshita, M., Suzuki, N., Gomyo, A., Ishi, T., Okamoto, D., Furue, K., Ueno, T., Tsuchizawa, T., Watanabe, T., Yamada, K. & 2 others, Itabashi, S. I. & Akedo, J., 2009 Jul, In : Proceedings of the IEEE. 97, 7, p. 1186-1196 11 p., 5075754.

Research output: Contribution to journalArticle

90 Citations (Scopus)
2011

InGaAs nano-photodiode enhanced using polarization-insensitive surface-plasmon antennas

Okamoto, D., Fujikata, J. & Ohashi, K., 2011 Dec 1, In : Japanese journal of applied physics. 50, 12, 120201.

Research output: Contribution to journalArticle

5 Citations (Scopus)

Vertical-coupling optical interface for on-chip optical interconnection

Yamada, H., Nozawa, M., Kinoshita, M. & Ohashi, K., 2011 Jan 17, In : Optics Express. 19, 2, p. 698-703 6 p.

Research output: Contribution to journalArticle

37 Citations (Scopus)
2013

A plastic-based bolometer array sensor using carbon nanotubes for low-cost infrared imaging devices

Narita, K., Kuribayashi, R., Altintas, E., Someya, H., Tsuda, K., Ohashi, K., Tabuchi, T., Okubo, S., Imazato, M. & Komatsubara, S., 2013 Apr 26, In : Sensors and Actuators, A: Physical. 195, p. 142-147 6 p.

Research output: Contribution to journalArticle

12 Citations (Scopus)
2016

Review of physiological balance sensing in an unobtrusive manner

Ohashi, K., Kuroiwa, S., Hideshima, S., Nakanishi, T. & Osaka, T., 2016, In : IEEJ Transactions on Sensors and Micromachines. 136, 8, p. 357-361 5 p.

Research output: Contribution to journalArticle

2017

Review of Physiological Balance Sensing in an Unobtrusive Manner

Ohashi, K., Kuroiwa, S., Hideshima, S., Nakanishi, T. & Osaka, T., 2017 Sep 1, In : Electronics and Communications in Japan. 100, 9, p. 50-55 6 p.

Research output: Contribution to journalArticle

1 Citation (Scopus)
2020

Tetrameric jacalin as a receptor for field effect transistor biosensor to detect secretory IgA in human sweat

Hayashi, H., Sakamoto, N., Hideshima, S., Harada, Y., Tsuna, M., Kuroiwa, S., Ohashi, K., Momma, T. & Osaka, T., 2020 Sep 15, In : Journal of Electroanalytical Chemistry. 873, 114371.

Research output: Contribution to journalArticle