Search Results - "Kohira, Hidekazu"

Nano-Scale Defect Mapping on a Magnetic Disk Surface Using a Contact Sensor by Shimizu, Yuki, Xu, Junguo, Kohira, Hidekazu, Kurita, Masayuki, Shiramatsu, Toshiya, Furukawa, Masaru

“…Targeting both higher touchdown sensitivity and highly accurate nanometer-scale defect detection on a disk surface, a thermal-contact sensor, integrated into a…”
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Simulation of Lubricant Behavior by Using the Particle Method by Ishii, E., Kohira, H.

“…Lubricant behavior within a head-disk clearance in recent hard disk drives was simulated by using a particle method, which is based on continuum dynamics. The…”
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Effect of reduction of slider pitch-mode vibration on magnetic-recording performance at low-clearance head–disk interface by Shimizu, Yuki, Xu, Junguo, Li, Jianhua, Kohira, Hidekazu, Hashimoto, Kiyoshi

“…Aiming at improvements of both stability of slider flying and magnetic-recording performance under a low-clearance condition, a “narrow-grooved slider” was…”
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Experimental study on slider dynamics during touchdown by using thermal flying-height control by Shimizu, Yuki, Xu, Junguo, Kohira, Hidekazu, Kuroki, Kenji, Ono, Kyosuke

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Investigation of Mechanical Clearance Change with Thermal Flying-height Control Slider at High Altitude by Satoru OOKUBO, Toshiya SHIRAMATSU, Masayuki KURITA, Hidekazu KOHIRA, Yoshinori TAKEUCHI

“…Clearance change between a magnetic head with a thermal flying-height control (TFC) function and a magnetic disk at high altitude was investigated. To clarify…”
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Contact/Clearance Sensor for HDI Subnanometer Regime by Junguo Xu, Shimizu, Yuki, Furukawa, Masaru, Jianhua Li, Sano, Yuichiro, Shiramatsu, Toshiya, Aoki, Yuichi, Matsumoto, Hiroyuki, Kuroki, Kenji, Kohira, Hidekazu

“…The fundamental performance of contact/clearance sensor, namely embedded contact sensor (ECS), is addressed in this paper. Both simulation and experiment…”
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Experimental study on slider dynamics during touchdown by using thermal flying-height control by Shimizu, Yuki, Xu, Junguo, Kohira, Hidekazu, Kuroki, Kenji, Ono, Kyosuke

“…To investigate the possibility of further lowering the clearance in head–disk interface systems, slider dynamic behavior during a touchdown sequence with a…”
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Thermal mechanics of a contact sensor used in hard disk drives by Li, Jianhua, Xu, Junguo, Liu, Jin, Kohira, Hidekazu

“…A typical thermal-contact sensor (TCS) used in hard-disk drives was investigated by the simulation. Analytical solution to solve temperature variation of…”
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Experimental study on slider dynamics during touchdown by using thermal flying-height control: 20th ASME Conference on Information Storage and Processing Systems, Santa Clara, Ca, USA, 14-15 June 2010 by SHIMIZU, Yuki, JUNGUO XU, KOHIRA, Hidekazu, KUROKI, Kenji, ONO, Kyosuke

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Partial-contact head-disk interface approach for high-density recording by Junguo Xu, Kohira, H., Tanaka, H., Saegusa, S.

“…An isolated-pad-type slider and a narrow-trailing-edge-type slider were designed and fabricated for partial-contact head-disk interface. Evaluation results…”
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Flying-height adjustment of a magnetic head slider with a piezoelectric micro-actuator by Kurita, M., Tsuchiyama, R., Tokuyama, M., Junguo Xu, Yoshimura, Y., Kohira, H., Lizhi Su, Kato, K.

“…The current design of magnetic disk head sliders needs two extra margins in flying height design: one for manufacturing tolerance and one for environmental…”
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Effect of air-bearing design on slider dynamics during unloading process by Tanaka, H., Kohira, H., Matsumoto, M.

“…Slider dynamics during unloading process are studied experimentally using a laser Doppler vibrometer. A lift tab of a suspension is vertically lifted to unload…”
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An active-head slider with a piezoelectric actuator for controlling flying height by Kurita, M., Yamazaki, T., Kohira, H., Matsumoto, M., Tsuchiyama, R., Junguo Xu, Harada, T., Inoue, Y., Lizhi Su, Kato, K.

“…The current design of magnetic-disk head sliders needs an extra margin of flying height for manufacturing tolerance or environmental variation. To reduce this…”
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Effect of air bearing design on wear of diamond-like carbon coated proximity recording sliders by Kohira, Hidekazu, Prabhakaran, Vijay, Talke, F.E

“…The effect of air bearing design on the wear behavior of diamond-like carbon (DLC) coated sliders is investigated as a function of “interference height” and…”
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Measurement of wear of carbon coated sliders using atomic force microscopy and Raman spectroscopy by Prabhakaran, Vijay, Kohira, Hidekazu, Talke, Frank.E

“…Wear of carbon coated sub-ambient pressure “pico” sliders is investigated during sweep testing as a function of interference height, slider design and sliding…”
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Effective refractive index method for frustrated total reflection: application to measurement of flying height by Mori, S., Sugawara, H., Tokisue, H., Kohira, H.

“…In order to measure the spacing between an actual magnetic disk and a slider, we developed a flying height sensor based on frustrated total reflection (FTR)…”
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An active-head slider with a piezoelectric actuator for controlling flying height by Kurita, M., Yamazaki, T., Kohira, H., Matsumoto, M., Tsuchiyama, R., Xu, J., Harada, T., Inoue, Y.

“…Summary form only given. An extra margin is currently required in designing the flying height (h/sub f/) of hard disk drives. This is to allow for…”
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