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Hiroshi Tani
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Proceedings Papers

Adsorption and Tribological Properties of Perfluoropolyether Lubricant Films Having Main-Chains With Different Carbon Number

Hiroshi Tani, Yuki Yamaji, Ryosuke Sagata, Tomomi Hatta, Renguo Lu, Shinji Koganezawa, Norio Tagawa
Proc. ASME. ISPS2023, ASME 2023 32nd Conference on Information Storage and Processing Systems, V001T04A001, August 28–29, 2023
Publisher: American Society of Mechanical Engineers
Paper No: ISPS2023-109769
https://doi.org/10.1115/ISPS2023-109769
View Paper titled, Adsorption and Tribological Properties of Perfluoropolyether Lubricant Films Having Main-Chains With Different Carbon Number
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Topics: Carbon, Chain, Lubricants, Tribology, Disks, Clearances (Engineering), Wear
Proceedings Papers

Electromagnetic Energy Harvester for Transportation Infrastructure Using Vehicle-Tread Force

Shinji Koganezawa, Kota Morii, Hiroshi Tani, Renguo Lu, Norio Tagawa
Proc. ASME. ISPS2021, ASME 2021 30th Conference on Information Storage and Processing Systems, V001T09A001, June 2–3, 2021
Publisher: American Society of Mechanical Engineers
Paper No: ISPS2021-63672
https://doi.org/10.1115/ISPS2021-63672
View Paper titled, Electromagnetic Energy Harvester for Transportation Infrastructure Using Vehicle-Tread Force
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Topics: Electromagnetic radiation, Energy harvesting, Transportation systems, Vehicles
Proceedings Papers

Control of Head Smear Generated From DLC Films Using an External Electric Field

Hiroshi Tani, Renguo Lu, Shinji Koganezawa, Norio Tagawa
Proc. ASME. ISPS2021, ASME 2021 30th Conference on Information Storage and Processing Systems, V001T05A002, June 2–3, 2021
Publisher: American Society of Mechanical Engineers
Paper No: ISPS2021-63202
https://doi.org/10.1115/ISPS2021-63202
View Paper titled, Control of Head Smear Generated From DLC Films Using an External Electric Field
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Topics: Carbon, Diamond films, Diamonds, Disks, Electric fields, Heat, Magnetic recording
Proceedings Papers

Investigation of Smear Formation Mechanism From DLC Film by Heating

Hiroshi Tani, Renguo Lu, Shinji Koganezawa, Norio Tagawa
Proc. ASME. ISPS2020, ASME 2020 29th Conference on Information Storage and Processing Systems, V001T05A001, June 24–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: ISPS2020-1902
https://doi.org/10.1115/ISPS2020-1902
View Paper titled, Investigation of Smear Formation Mechanism From DLC Film by Heating
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Topics: Carbon, Diamond films, Disks, Heating, Hydrogen, Temperature, Nitrogen, Diamonds, Heat, Magnetic recording
Proceedings Papers

Hybrid Lubricant Film With High Bonding Ratio and High Coverage

Hiroshi Tani, Yuki Uesaraie, Renguo Lu, Shinji Koganezawa, Norio Tagawa
Proc. ASME. ISPS2019, ASME 2019 28th Conference on Information Storage and Processing Systems, V001T03A001, June 27–28, 2019
Publisher: American Society of Mechanical Engineers
Paper No: ISPS2019-7428
https://doi.org/10.1115/ISPS2019-7428
View Paper titled, Hybrid Lubricant Film With High Bonding Ratio and High Coverage
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Topics: Bonding, Lubricants, Photoelectrons, Chemical vapor deposition, Disks, Friction, Heat, Magnetic recording
Proceedings Papers

TOF-SIMS Analysis of Accumulated PFPE Lubricant Smear Following Laser Heating

Hiroshi Tani, Yuta Shibahara, Renguo Lu, Shinji Koganezawa, Norio Tagawa
Proc. ASME. ISPS-MIPE2018, ASME-JSME 2018 Joint International Conference on Information Storage and Processing Systems and Micromechatronics for Information and Precision Equipment, V001T01A001, August 29–30, 2018
Publisher: American Society of Mechanical Engineers
Paper No: ISPS-MIPE2018-8515
https://doi.org/10.1115/ISPS-MIPE2018-8515
View Paper titled, TOF-SIMS Analysis of Accumulated PFPE Lubricant Smear Following Laser Heating
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Topics: Heating, Lasers, Lubricants, Secondary ion mass spectrometry, Temperature, Molecular weight, Flight, Heat, Magnetic recording, Thermal stability
Proceedings Papers

Numerical Study on the Effects of Linear Protrusion on Flow-Induced Carriage Excitation Force in Hard Disk Drives

Shinji Koganezawa, Shotaro Tsuda, Hiroshi Tani, Renguo Lu, Norio Tagawa
Proc. ASME. ISPS-MIPE2018, ASME-JSME 2018 Joint International Conference on Information Storage and Processing Systems and Micromechatronics for Information and Precision Equipment, V001T04A001, August 29–30, 2018
Publisher: American Society of Mechanical Engineers
Paper No: ISPS-MIPE2018-8504
https://doi.org/10.1115/ISPS-MIPE2018-8504
View Paper titled, Numerical Study on the Effects of Linear Protrusion on Flow-Induced Carriage Excitation Force in Hard Disk Drives
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Topics: Disks, Excitation, Flow (Dynamics), Railroad passenger cars, Finite element analysis, Finite element model, Errors, Fluctuations (Physics), Magnetic heads, Pressure
Proceedings Papers

Study of Lubricant Depletion Induced by Pulsed-Laser Irradiation Heating in Heat-Assisted Magnetic Recording

Norio Tagawa, Hiroshi Tani, Yuki Uesaraie, Shinji Koganezawa, Renguo Lu
Proc. ASME. ISPS-MIPE2018, ASME-JSME 2018 Joint International Conference on Information Storage and Processing Systems and Micromechatronics for Information and Precision Equipment, V001T01A003, August 29–30, 2018
Publisher: American Society of Mechanical Engineers
Paper No: ISPS-MIPE2018-8527
https://doi.org/10.1115/ISPS-MIPE2018-8527
View Paper titled, Study of Lubricant Depletion Induced by Pulsed-Laser Irradiation Heating in Heat-Assisted Magnetic Recording
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Topics: Heat, Heating, Irradiation (Radiation exposure), Lasers, Lubricants, Magnetic recording, Temperature distribution
Proceedings Papers

Smear Growth of Siloxane Outgas at Laser Heating

Hiroshi Tani, Norio Tagawa, Renguo Lu, Shinji Koganezawa
Proc. ASME. ISPS2017, ASME 2017 Conference on Information Storage and Processing Systems, V001T01A013, August 29–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: ISPS2017-5451
https://doi.org/10.1115/ISPS2017-5451
View Paper titled, Smear Growth of Siloxane Outgas at Laser Heating
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Topics: Heating, Lasers, Siloxanes, Disks, Density, Evaporation, Glass, Heat, Magnetic heads, Magnetic recording
Proceedings Papers

Behavior of Chemical Reaction Between Siloxane Compounds and Surface on Carbon Materials

Tsuyoshi Shimizu, Hiroshi Tani
Proc. ASME. ISPS2017, ASME 2017 Conference on Information Storage and Processing Systems, V001T01A005, August 29–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: ISPS2017-5424
https://doi.org/10.1115/ISPS2017-5424
View Paper titled, Behavior of Chemical Reaction Between Siloxane Compounds and Surface on Carbon Materials
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Topics: Carbon, Chemical reactions, Siloxanes, Disks, Catalysts, Contamination, Diamonds, Graphite, Lubricants, Pollution
Proceedings Papers

Effect of Laser Heating on Nanoscale Wear of DLC Thin Films in an Air Environment

Norio Tagawa, Hiroshi Tani, Shinji Koganezawa, Renguo Lu
Proc. ASME. ISPS2017, ASME 2017 Conference on Information Storage and Processing Systems, V001T01A003, August 29–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: ISPS2017-5412
https://doi.org/10.1115/ISPS2017-5412
View Paper titled, Effect of Laser Heating on Nanoscale Wear of DLC Thin Films in an Air Environment
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Topics: Heating, Lasers, Nanoscale phenomena, Thin films, Wear, Magnetic recording, Carbon, Disks, Diamonds, Heat
Proceedings Papers

Effect of Vapor Lubrication on Head–Disk Clearance and Slider Wear in Inert Gas Environments

Hiroshi Tani, Jun Tomita, Shinji Koganezawa, N. Tagawa
Proc. ASME. ISPS2014, 2014 Conference on Information Storage and Processing Systems, V001T01A007, June 23–24, 2014
Publisher: American Society of Mechanical Engineers
Paper No: ISPS2014-6931
https://doi.org/10.1115/ISPS2014-6931
View Paper titled, Effect of Vapor Lubrication on Head–Disk Clearance and Slider Wear in Inert Gas Environments
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Topics: Clearances (Engineering), Disks, Lubrication, Vapors, Wear, Horizontal directional drilling, Carbon, Helium, Oxygen, Control systems
Proceedings Papers

Structural Stability of Nanometer-Thick Diamond-Like Carbon Films due to Heating for Thermally Assisted Magnetic Recording

Norio Tagawa, Hiroshi Tani
Proc. ASME. ISPS2013, ASME 2013 Conference on Information Storage and Processing Systems, V001T01A009, June 24–25, 2013
Publisher: American Society of Mechanical Engineers
Paper No: ISPS2013-2853
https://doi.org/10.1115/ISPS2013-2853
View Paper titled, Structural Stability of Nanometer-Thick Diamond-Like Carbon Films due to Heating for Thermally Assisted Magnetic Recording
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Topics: Diamond films, Heating, Magnetic recording, Structural stability, Lasers, Disks, Lubricants, Thin films, Chemical vapor deposition, Damage
Proceedings Papers

Application of Vertically-Aligned Carbon Nano-Tube for Burnishing Slider in Cleaning Process of Magnetic Disk Surface

Hiroshi Tani, K. Konishi, W. Norimatsu, M. Kusunoki, N. Tagawa
Proc. ASME. ISPS2013, ASME 2013 Conference on Information Storage and Processing Systems, V001T01A007, June 24–25, 2013
Publisher: American Society of Mechanical Engineers
Paper No: ISPS2013-2840
https://doi.org/10.1115/ISPS2013-2840
View Paper titled, Application of Vertically-Aligned Carbon Nano-Tube for Burnishing Slider in Cleaning Process of Magnetic Disk Surface
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Topics: Carbon, Disks, Nanotubes, Chemical vapor deposition, Adhesion, Atoms, Carbon nanotubes, Magnetic heads, Clearances (Engineering), Control systems
Proceedings Papers

Depletion of Monolayer Liquid Lubricant Films Induced by Laser Heating in Thermally Assisted Magnetic Recording

Norio Tagawa, Takao Miki, Hiroshi Tani
Proc. ASME. IJTC2011, ASME/STLE 2011 Joint Tribology Conference, 325-327, October 24–26, 2011
Publisher: American Society of Mechanical Engineers
Paper No: IJTC2011-61136
https://doi.org/10.1115/IJTC2011-61136
View Paper titled, Depletion of Monolayer Liquid Lubricant Films Induced by Laser Heating in Thermally Assisted Magnetic Recording
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Topics: Heating, Lasers, Lubricants, Magnetic recording, Temperature programmed desorption, Film thickness, Spectroscopy, Carbon, Desorption, Diamonds
Proceedings Papers

Study on Lubricant Depletion Induced by Laser Heating in Thermally Assisted Magnetic Recording Systems: Effect of Lubricant Thickness

Norio Tagawa, Hideki Andoh, Hiroshi Tani
Proc. ASME. IJTC2009, ASME/STLE 2009 International Joint Tribology Conference, 423-425, October 19–21, 2009
Publisher: American Society of Mechanical Engineers
Paper No: IJTC2009-15172
https://doi.org/10.1115/IJTC2009-15172
View Paper titled, Study on Lubricant Depletion Induced by Laser Heating in Thermally Assisted Magnetic Recording Systems: Effect of Lubricant Thickness
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Topics: Heating, Lasers, Lubricants, Magnetic recording, Film thickness, Disks, Evaporation, Stress, Temperature, Temperature gradient
Journal Articles

Spreading Mechanism of PFPE Lubricant on the Magnetic Disks

Hiroshi Tani, Hiroyuki Matsumoto
Journal: Journal of Tribology
Publisher: ASME
Article Type: Technical Papers
J. Tribol. July 2001, 123(3): 533–540.
https://doi.org/10.1115/1.1308030
Published Online: July 6, 2000
View Article titled, Spreading Mechanism of PFPE Lubricant on the Magnetic Disks
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Topics: Disks, Lubricants, Lubrication