0

Full Content is available to subscribers

Subscribe/Learn More  >

Non-Equilibrium Thermodynamics and Formation of Nanoparticles in Femtosecond Laser Ablation

[+] Author Affiliations
Changrui Cheng, Xianfan Xu

Purdue University

Paper No. IMECE2004-61263, pp. 541-546; 6 pages
doi:10.1115/IMECE2004-61263
From:
  • ASME 2004 International Mechanical Engineering Congress and Exposition
  • Heat Transfer, Volume 3
  • Anaheim, California, USA, November 13 – 19, 2004
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 0-7918-4711-X | eISBN: 0-7918-4178-2, 0-7918-4179-0, 0-7918-4180-4
  • Copyright © 2004 by ASME

abstract

High intensity femtosecond laser ablation processes are computed by molecular dynamics (MD) simulations. The procedure of MD modeling and related numerical techniques are introduced. The volumetric phase separation is illustrated. The emphasis is to understand the thermodynamic state of a material which is heated with an extremely high heating rate, and the formation of particles with nanometer size in the laser-ablated plume. It is revealed that nanoparticles are originated from expansion of a supercritical fluid in a reduced temperature and pressure environment. The parameters of the nanoparticles (temperature, size and velocity) are shown. The results will help to understand femtosecond laser materials processing and applications where nanoparticles are of interest.

Copyright © 2004 by ASME

Figures

Tables

Interactive Graphics

Video

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

NOTE:
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