Journal
BIOTECHNOLOGY PROGRESS
Volume 22, Issue 5, Pages 1388-1393Publisher
AMER CHEMICAL SOC
DOI: 10.1021/bp060115s
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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.
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