Scattering Process of Transmitted Gas Molecules Through Vertically Aligned Single-Walled Carbon Nanotube Arrays(<Special Issue>The 1st Symposium on Micro-Nano Engineering)

• KAWASAKI Jumpei

  Department of Mechanical Engineering, The University of Tokyo

• HARADA Yushi

  Department of Mechanical Engineering, The University of Tokyo

• KINEFUCHI Ikuya

  Department of Mechanical Engineering, The University of Tokyo

• ISHIKAWA Kei

  Department of Mechanical Engineering, The University of Tokyo

• SHIOMI Junichiro

  Department of Mechanical Engineering, The University of Tokyo

• TAKAGI Shu

  Department of Mechanical Engineering, The University of Tokyo

• MARUYAMA Shigeo

  Department of Mechanical Engineering, The University of Tokyo

• MATSUMOTO Yoichiro

  Department of Mechanical Engineering, The University of Tokyo

Bibliographic Information

Other Title

• カーボンナノチューブ垂直配向膜を透過する気体分子の散乱挙動(<小特集>第1回マイクロ・ナノ工学シンポジウム)
• カーボンナノチューブ垂直配向膜を透過する気体分子の散乱挙動
• カーボンナノチューブスイチョクハイコウ マク オ トウカ スル キタイ ブンシ ノ サンラン キョドウ

Abstract

Scattering process of gas molecules on vertically aligned single-walled carbon nanotube (VA-SWNT) films was investigated using molecular beam technique. The surface modification with VA-SWNT films was found to significantly enhance energy accommodation of helium molecules, which tends to be inefficient even on contaminated or rough surfaces because of the large mass mismatch between helium and surface atoms. Our results indicate that the surface modification with VA-SWNT films is promising for enhancing heat transfer across surfaces in micro/nanoscale devices. The efficient energy transfer originates from high porosity of the films, which enables gas molecules to penetrate into the film and have multiple collisions with SWNTs. In order to reveal the scattering process within the film, we also conducted the measurements with freestanding VA-SWNT films. Even for the film as thin as 0.1μm, most of the molecules are well accommodated and are reflected or transmitted diffusively through the film while few molecules are transmitted without any interaction.

Journal

• TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C

  TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C 76 (768), 1933-1935, 2010

  The Japan Society of Mechanical Engineers

Keywords

• Rarefied Gas
• Gas-Surface Interaction
• Molecular Beam
• Interfacial Phenomena
• Heat Transfer Enhancement
• Carbon Nanotube

Details

• CRID: 1390282681362466944
• NII Article ID: 110007685442
• NII Book ID: AN00187463
• DOI: 10.1299/kikaic.76.1933
• ISSN: 18848354
• ISSN: 03875024
• NDL BIB ID: 10811010
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I10811010
• Web Site: https://www.jstage.jst.go.jp/article/kikaic1979/76/768/76_KJ00006542674/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed