Laser cleaning of magnetic disks

W. D. Song, Y. F. Lu, M. H. Hong, T. S. Low

Research output: Contribution to journalConference articlepeer-review

5 Scopus citations


Laser cleaning of disk surfaces was investigated both experimentally and theoretically. It was found that laser cleaning efficiency increases with increasing laser fluence and pulse number. The optimal cleaning conditions can be selected between the two boundaries of damage thresholds and critical cleaning thresholds (100% cleaning). A cleaning model was established for laser-induced removal of particles from substrate surfaces by taking Van der Waals force and cleaning force into account. The theoretical analysis shows that the cleaning force (per unit area) increases with increasing laser fluence, which leads to a higher cleaning efficiency for removing particles from disk surfaces. The experimental results can be explained by the model and simulation.

Original languageEnglish (US)
Pages (from-to)19-26
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - Aug 15 1998
Externally publishedYes
EventLaser Processing of Materials and Industrial Applications II 1998 - Beijing, China
Duration: Sep 16 1998Sep 19 1998


  • Cleaning model
  • Laser cleaning
  • Magnetic disks
  • Sic particles

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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