Micropatterning of porous silicon films by direct laser writing

Yit Lung Khung, Sean D. Graney, Nicolas H. Voelcker

Research output: Contribution to journalArticleResearchpeer-review

58 Citations (Scopus)


In this study, we demonstrate that porous silicon films can be ablated by the pulsed nitrogen laser of a commercial MALDI mass spectrometer. The extent of laser-induced ablation was found to depend on the doping level and surface chemistry of the porous silicon film. Using direct laser writing with or without a mask, micropatterns were generated on the porous silicon surface. These micropatterns were subsequently used to guide the growth of mammalian cells including neuroblastoma. Excellent selectivity of cell growth toward the laser-ablated regions was established.

Original languageEnglish
Pages (from-to)1388-1393
Number of pages6
JournalBiotechnology Progress
Issue number5
Publication statusPublished - 1 Sept 2006
Externally publishedYes

Cite this