Micropillar fabrication on bovine cortical bone by direct write femtosecond laser ablation

  • Y. C. Lima
  • , K. Altman
  • , D. F. Farson
  • , K. M. Flores

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

This work investigated fabrication of cylindrical micropillars on bovine cortical bone using direct-write femtosecond laser ablation. The ablation threshold of the material was measured by single-pulse ablation tests and incubation coefficient was measured from linear scanned ablation tests. A motion system was programmed to apply multiple layers of concentric rings of pulses to machine pillars of various diameters and heights. The diameter of the top surface of the pillar was found to steadily decrease due to incubation of damage from successive layers of pulses during the machining process. Pillar top diameter was predicted based on a paraxial beam fluence approximation and single-pulse ablation threshold and incubation coefficient measurements. Pillar diameters predicted as successive layers of pulses were applied were well-matched to experiments, confirming that femtosecond laser ablation of the cortical bone was well-modeled by single-pulse ablation threshold measurements and an incubation coefficient.

Original languageEnglish
Title of host publication29th International Congress on Applications of Lasers and Electro-Optics, ICALEO 2010 - Congress Proceedings
Pages1124-1132
Number of pages9
StatePublished - 2010
Event29th International Congress on Applications of Lasers and Electro-Optics, ICALEO 2010 - Anaheim, CA, United States
Duration: Sep 26 2010Sep 30 2010

Publication series

Name29th International Congress on Applications of Lasers and Electro-Optics, ICALEO 2010 - Congress Proceedings
Volume103

Conference

Conference29th International Congress on Applications of Lasers and Electro-Optics, ICALEO 2010
Country/TerritoryUnited States
CityAnaheim, CA
Period09/26/1009/30/10

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