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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

Dynamics for Micromachined Silicon Dual Negative Pressure Slider Bearings With an Integrated Microsuspension Mechanism in Proximity Magnetic Recording

Norio Tagawa, Atsunobu Mori, Hiroshi Kajitani, Masanobu Hashimoto
Proc. ASME. IMECE98, 9th International Symposium on Information Storage and Processing Systems, 97-102, November 15–20, 1998
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1998-0213
https://doi.org/10.1115/IMECE1998-0213
View Paper titled, Dynamics for Micromachined Silicon Dual Negative Pressure Slider Bearings With an Integrated Microsuspension Mechanism in Proximity Magnetic Recording
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Topics: Dynamics (Mechanics), Magnetic recording, Micromachining, Pressure, Silicon, Slider bearings, Ships, Disks, Air bearings, Computer simulation
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

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

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
Open the PDF for Numerical Study on the Effects of Linear Protrusion on Flow-Induced Carriage Excitation Force in Hard Disk Drives in another window
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

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

Superlubricity Relevant in Hard Disk Drive Applications

Shou-Mo Zhang, Cuong-C. Vu, Qun-Yang Li, Norio Tagawa, Quan-Shui Zheng
Proc. ASME. ISPS2016, ASME 2016 Conference on Information Storage and Processing Systems, V001T01A004, June 20–21, 2016
Publisher: American Society of Mechanical Engineers
Paper No: ISPS2016-9523
https://doi.org/10.1115/ISPS2016-9523
View Paper titled, Superlubricity Relevant in Hard Disk Drive Applications
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Topics: Disks, Friction, Graphite, Design, Graphene, Horizontal directional drilling, Temperature effects, Atomic force microscopy, Density, Desorption
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

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
Proceedings Papers

Effect of Temperature on the Spreading Characteristics of Molecularly Thin Liquid Lubricant Films in Hard Disk Drives

Norio Tagawa, Kenta Mori, Atsunobu Mori, Masako Ikegami
Proc. ASME. IJTC2008, STLE/ASME 2008 International Joint Tribology Conference, 669-671, October 20–22, 2008
Publisher: American Society of Mechanical Engineers
Paper No: IJTC2008-71035
https://doi.org/10.1115/IJTC2008-71035
View Paper titled, Effect of Temperature on the Spreading Characteristics of Molecularly Thin Liquid Lubricant Films in Hard Disk Drives
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Topics: Disks, Lubricants, Temperature, Mechanical admittance, Diffusion (Physics), Evaporation, Horizontal directional drilling, Robustness, Viscosity
Proceedings Papers

Effects of Molecularly Thin Liquid Lubricant Film Materials on Slider Hysteresis Instability in Hard Disk Drives

Norio Tagawa, Daisuke Tanaka, Atsunobu Mori
Proc. ASME. IJTC2007, ASME/STLE 2007 International Joint Tribology Conference, Parts A and B, 1103-1104, October 22–24, 2007
Publisher: American Society of Mechanical Engineers
Paper No: IJTC2007-44494
https://doi.org/10.1115/IJTC2007-44494
View Paper titled, Effects of Molecularly Thin Liquid Lubricant Film Materials on Slider Hysteresis Instability in Hard Disk Drives
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Topics: Disks, Lubricants, Pressure, Friction, Intermolecular forces, Mechanical admittance, Pumps
Proceedings Papers

MEMS-Based Active Sliders With Multi-Layered Composite PZT Thin Films in Hard Disk Drives

Norio Tagawa, Atsunobu Mori
Proc. ASME. TRIB2002, Magnetic Storage Symposium: Frontiers of Magnetic Hard Disk Drive Tribology and Technology, 9-15, October 27–30, 2002
Publisher: American Society of Mechanical Engineers
Paper No: 2002-TRIB-0249
https://doi.org/10.1115/2002-TRIB-0249
View Paper titled, MEMS-Based Active Sliders With Multi-Layered Composite PZT Thin Films in Hard Disk Drives
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Topics: Composite materials, Disks, Microactuators, Microelectromechanical systems, Thin films
Proceedings Papers

Spreading of Novel Cyclotriphosphazine-Terminated PFPE Films on Carbon Surfaces

Norio Tagawa, Tadao Tateyama, Atsunobu Mori, Nagayoshi Kobayashi, Yoshinobu Fujii, Masako Ikegami
Proc. ASME. TRIB2003, Magnetic Storage Symposium: Frontiers of Magnetic Hard Disk Drive Tribology and Technology, 17-20, October 26–29, 2003
Publisher: American Society of Mechanical Engineers
Paper No: 2003-TRIB-332
https://doi.org/10.1115/2003-TRIB-332
View Paper titled, Spreading of Novel Cyclotriphosphazine-Terminated PFPE Films on Carbon Surfaces
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Topics: Carbon, Film thickness, Lubricants, Disks, Mechanical admittance, Adhesion, Diffusion (Physics)
Proceedings Papers

Effects of End-Group Functionality and Molecular Weight of Ultra-Thin Liquid Lubricant Films on Contact Slider Dynamics in Hard Disk Drives

Norio Tagawa, Yoshiaki Tashiro, Atsunobu Mori
Proc. ASME. TRIB2004, ASME/STLE 2004 International Joint Tribology Conference, Parts A and B, 1523-1529, October 24–27, 2004
Publisher: American Society of Mechanical Engineers
Paper No: TRIB2004-64193
https://doi.org/10.1115/TRIB2004-64193
View Paper titled, Effects of End-Group Functionality and Molecular Weight of Ultra-Thin Liquid Lubricant Films on Contact Slider Dynamics in Hard Disk Drives
Open the PDF for Effects of End-Group Functionality and Molecular Weight of Ultra-Thin Liquid Lubricant Films on Contact Slider Dynamics in Hard Disk Drives in another window
Topics: Disks, Dynamics (Mechanics), Lubricants, Molecular weight, Film thickness, Wetting, Acoustic emissions