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Proceedings Paper

Laser induced micro plasma processing of polymer substrates for biomedical implant applications
Author(s): P. W. French; A. Rosowski; M. Murphy; M. Irving; M. C. Sharp
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Paper Abstract

This paper reports the experimental results of a new hybrid laser processing technique; Laser Induced Micro Plasma Processing (LIMP2). A transparent substrate is placed on top of a medium that will interact with the laser beam and create a plasma. The plasma and laser beam act in unison to ablate material and create micro-structuring on the “backside” of the substrate. We report the results of a series of experiments on a new laser processing technique that will use the same laser-plasma interaction to micromachining structures into glass and polymer substrates on the “topside” of the substrate and hence machine non-transparent material. This new laser processing technique is called Laser Induced Micro Plasma Processing (LIMP2). Micromachining of biomedical implants is proving an important enabling technology in controlling cell growth on a macro-scale. This paper discusses LIMP2 structuring of transparent substrate such as glasses and polymers for this application. Direct machining of these materials by lasers in the near infrared is at present impossible. Laser Induced Micro Plasma Processing (LIMP2) is a technique that allows laser operating at 1064 nm to machine microstructures directly these transparent substrates.

Paper Details

Date Published: 1 July 2015
PDF: 9 pages
Proc. SPIE 9657, Industrial Laser Applications Symposium (ILAS 2015), 96570H (1 July 2015); doi: 10.1117/12.2180231
Show Author Affiliations
P. W. French, Liverpool John Moores Univ. (United Kingdom)
A. Rosowski, Liverpool John Moores Univ. (United Kingdom)
M. Murphy, Liverpool John Moores Univ. (United Kingdom)
M. Irving, Liverpool John Moores Univ. (United Kingdom)
M. C. Sharp, Liverpool John Moores Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 9657:
Industrial Laser Applications Symposium (ILAS 2015)
Mike Green; Cath Rose, Editor(s)

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