HAMR emulation using plasmonic SERS sensor as near field transducer

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

A plasmonic Surface-enhanced Raman Spectroscopy (SERS) sensor has been used for emulation of Near Field Transducer (NFT) in Heat-Assisted Magnetic Recording (HAMR). Laser heating mechanism by the sensor is the same as that by NFT with electro-magnetic near-field or plasmonic field, which is different from far field heating. Heating behavior for a lubricant film on a carbon overcoat for a hard disk medium was observed using Surface-enhanced Raman Spectroscopy with the plasmonic SERS sensor. Spectral change of lube films in laser heating with a continuous power changer was measured with heating temperature, calculated by anti-Stokes/Stokes intensity ratio in Raman spectra. As a result, it is found that the lubricant film composed of a tetraol perfluoro-polyether (PFPE) is evaporated above 290℃, which shows good agreement with that by TGA (Thermogravimetric Analysis). The evaporation occurs in wide range of spacing between the lubricant film and the SERS sensor from 0 (contact) to 50nm, and more. After laser heating, lubricant film with free surface in a large gap area, i.e. spacing of 3nm, is recovered with elapsed time. However it is difficult to be recovered in confined (contact) area, because lubricant mobility is small. Lost lubricant can be recovered in head flying by surface diffusion or centrifugal force during disk rotation.

Original languageEnglish
Title of host publicationASME-JSME 2018 Joint International Conference on Information Storage and Processing Systems and Micromechatronics for Information and Precision Equipment, ISPS-MIPE 2018
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791851937
DOIs
Publication statusPublished - 2018 Jan 1
EventASME-JSME 2018 Joint International Conference on Information Storage and Processing Systems and Micromechatronics for Information and Precision Equipment, ISPS-MIPE 2018 - San Francisco, United States
Duration: 2018 Aug 292018 Aug 30

Other

OtherASME-JSME 2018 Joint International Conference on Information Storage and Processing Systems and Micromechatronics for Information and Precision Equipment, ISPS-MIPE 2018
CountryUnited States
CitySan Francisco
Period18/8/2918/8/30

Fingerprint

Magnetic recording
Lubricants
Raman spectroscopy
Transducers
Laser heating
Sensors
Heating
Surface diffusion
Polyethers
Hard disk storage
Thermogravimetric analysis
Hot Temperature
Raman scattering
Evaporation
Carbon

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Information Systems
  • Hardware and Architecture

Cite this

Yanagisawa, M., Kunimoto, M., Saito, M., & Homma, T. (2018). HAMR emulation using plasmonic SERS sensor as near field transducer. In ASME-JSME 2018 Joint International Conference on Information Storage and Processing Systems and Micromechatronics for Information and Precision Equipment, ISPS-MIPE 2018 American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/ISPS-MIPE2018-8537

HAMR emulation using plasmonic SERS sensor as near field transducer. / Yanagisawa, M.; Kunimoto, Masahiro; Saito, Mikiko; Homma, Takayuki.

ASME-JSME 2018 Joint International Conference on Information Storage and Processing Systems and Micromechatronics for Information and Precision Equipment, ISPS-MIPE 2018. American Society of Mechanical Engineers (ASME), 2018.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Yanagisawa, M, Kunimoto, M, Saito, M & Homma, T 2018, HAMR emulation using plasmonic SERS sensor as near field transducer. in ASME-JSME 2018 Joint International Conference on Information Storage and Processing Systems and Micromechatronics for Information and Precision Equipment, ISPS-MIPE 2018. American Society of Mechanical Engineers (ASME), ASME-JSME 2018 Joint International Conference on Information Storage and Processing Systems and Micromechatronics for Information and Precision Equipment, ISPS-MIPE 2018, San Francisco, United States, 18/8/29. https://doi.org/10.1115/ISPS-MIPE2018-8537
Yanagisawa M, Kunimoto M, Saito M, Homma T. HAMR emulation using plasmonic SERS sensor as near field transducer. In ASME-JSME 2018 Joint International Conference on Information Storage and Processing Systems and Micromechatronics for Information and Precision Equipment, ISPS-MIPE 2018. American Society of Mechanical Engineers (ASME). 2018 https://doi.org/10.1115/ISPS-MIPE2018-8537
Yanagisawa, M. ; Kunimoto, Masahiro ; Saito, Mikiko ; Homma, Takayuki. / HAMR emulation using plasmonic SERS sensor as near field transducer. ASME-JSME 2018 Joint International Conference on Information Storage and Processing Systems and Micromechatronics for Information and Precision Equipment, ISPS-MIPE 2018. American Society of Mechanical Engineers (ASME), 2018.
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