Nanofabrication of protein-patterned substrates for future cell adhesion experiments

A method for fabricating sub-micrometer size adhesion sites for future experiments in cell biology is presented. Glass substrates were coated with a thin layer of InSnO and SiO2. The SiO2 was structured by means of electron beam lithography and reactive ion etching, exposing sub-micrometer patches of the underlying InSnO. Dodecylphosphate, to which proteins can bind, was selectively adsorbed on these InSnO structures, whereas poly-l-lysine-g-poly(ethylene glycol) was used to passivate the surrounding SiO2 against protein adsorption. The effectiveness of the process was investigated by fluorescent microscopy and scanning near-field optical microscopy on substrates which have been exposed to fluorescently labeled streptavidin. © 2005 Elsevier B.V. All rights reserved.


Published in:
Microelectronic Engineering, 78-79, 1-4, 582-586
Year:
2005
ISSN:
01679317
Note:
355
Laboratories:




 Record created 2009-05-12, last modified 2018-12-03


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