Nano Archive

Large-area protein nano-arrays patterned by soft lithography

Ruiz, A. and Valsesia, A. and Bretagnol, F. and Colpo, P. and Rossi, F. (2007) Large-area protein nano-arrays patterned by soft lithography. NANOTECHNOLOGY, 18 (50).

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Official URL: http://www.iop.org/EJ/abstract/-search=66090698.1/...

Abstract

Nanostructured polydimethylsiloxane stamps have been used to pattern regular nano-arrays of proteins on polyethylene glycol surfaces by microcontact printing. The master was fabricated by using colloidal lithography. In this technique polystyrene nanobeads were used as nanomasks during subsequent oxygen etching and silica deposition. The elastomeric stamps, fabricated by classical replica moulding, reproduced accurately the nanosized features of the moulds. Printing of the proteins was performed by controlling the pressure, enabling the creation of an ordered arrangement of fouling domains (protein) on a non-fouling background (polyethylene glycol). 300 nm diameter poly-L-lysine spots spaced 100 nm were patterned. Such nanofabricated biofunctional surfaces offer promising capabilities for the development of highly compacted, ultra-sensitive biosensing devices.

Item Type:Article
Uncontrolled Keywords:COLLOIDAL LITHOGRAPHY; FABRICATION; SURFACES; NANOFABRICATION; MOLECULES; FEATURES; STAMPS; GOLD
Subjects:Material Science > Nanofabrication processes and tools
ID Code:6435
Deposited By:IoN
Deposited On:24 Sep 2009 11:48
Last Modified:24 Sep 2009 11:48

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