Full Content is available to subscribers

Subscribe/Learn More  >

Thermophoresis of Nanoparticles in Dilute Gases

[+] Author Affiliations
Jun Wang, Guodong Xia

Beijing University of Technology, Beijing, China

Paper No. FEDSM2018-83005, pp. V003T19A001; 4 pages
  • ASME 2018 5th Joint US-European Fluids Engineering Division Summer Meeting
  • Volume 3: Fluid Machinery; Erosion, Slurry, Sedimentation; Experimental, Multiscale, and Numerical Methods for Multiphase Flows; Gas-Liquid, Gas-Solid, and Liquid-Solid Flows; Performance of Multiphase Flow Systems; Micro/Nano-Fluidics
  • Montreal, Quebec, Canada, July 15–20, 2018
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 978-0-7918-5157-9
  • Copyright © 2018 by ASME


The thermophoresis of nanoparticles in the free molecule regime plays an important role in the nucleation, collision and coagulation of nanoparticles. In this contribution, on the basis of a rigorous gas kinetic theory, the theoretical expressions for the thermophoretic force on nanoparticles suspended in dilute gas mixtures are derived, wherein the non-rigid-body interactions between the gas molecules and the nanoparticle are taken into account. The analytical formulas in the present work are consistent with those under the rigid-body collision assumption. Negative thermophoresis, is found to be possible for nanoparticles in the free molecule regime, by which the thermophoretic force exerted on the suspended nanoparticle is from low to high temperature, i.e., opposite to the direction of normal thermophoresis.

Copyright © 2018 by ASME
Topics: Gases , Nanoparticles



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In