Chemical analysis of ultrathin DLC films and lubricant/DLC interface using plasmonic sensors

M. Yanagisawa, M. Kunimoto, T. Homma

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

The technical potential of a new plasmonic sensor, which can acquire surface-enhanced Raman spectra with high sensitivity by controlling surface plasmons is demonstrated for the chemical analysis of diamond-like carbon (DLC) films, lubricant films, and the DLC/lubricant interface on magnetic disks of sub-nanometer scale. The Raman spectra of thin DLC films and lubricated DLC carbon can be acquired with a high S/N ratio. Raman spectra of lubricated DLC carbon can also be acquired with the high S/N ratio. The wavenumber shift and intensity change of the Raman peaks of the phenyl and hydroxyl groups in the mixed lubricants (ADOH and Z-tetraol) show that the chemical interaction with the DLC surfaces of the phenyl group in the lubricant molecule decreases with increasing nitrogen content, whereas that of the hydroxyl group with the nitrogenated carbon increases. Raman spectra of nitrogenated DLC films are also acquired, the peaks show good agreement with density functional theory calculations. The calculated bonding energy indicates that the hydroxyl groups interact with the nitrogenated carbon.

本文言語English
ホスト出版物のタイトルASME 2014 Conference on Information Storage and Processing Systems, ISPS 2014
出版社Web Portal ASME (American Society of Mechanical Engineers)
ISBN(電子版)9780791845790
DOI
出版ステータスPublished - 2014
イベントASME 2014 Conference on Information Storage and Processing Systems, ISPS 2014 - Santa Clara, United States
継続期間: 2014 6 232014 6 24

出版物シリーズ

名前ASME 2014 Conference on Information Storage and Processing Systems, ISPS 2014

Conference

ConferenceASME 2014 Conference on Information Storage and Processing Systems, ISPS 2014
国/地域United States
CitySanta Clara
Period14/6/2314/6/24

ASJC Scopus subject areas

  • 情報システム
  • 制御およびシステム工学
  • ハードウェアとアーキテクチャ

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