The Snomipede: a parallel platform for scanning near-field photolithography

ul-Haq, E., Liu, Z., Zhang, Y., Alang Ahmad, S.A., Wong, L.S., Hobbs, J., Leggett, G., Micklefield, J., Roberts, C. and Weaver, J. (2011) The Snomipede: a parallel platform for scanning near-field photolithography. Journal of Materials Research, 26(24), pp. 2997-3008. (doi:10.1557/jmr.2011.370)

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Abstract

Using scanning near-field lithography (SNP), it is possible to pattern molecules at surfaces with a resolution as good as 9 nm [M. Montague, R. E. Ducker, K. S. L. Chong, R. J. Manning, F. J. M. Rutten, M. C. Davies and G. J. Leggett, Langmuir 23 (13), 7328–7337 (2007)]. However, in common with other scanning probe techniques, SNP has previously been considered a serial process, hindering its use in many applications. IBM’s “Millipede” addresses this problem by utilizing an array of local probes operating in parallel. Here, we describe the construction of two instruments (Snomipedes) that integrate near-field optical methods into the parallel probe paradigm and promise the integration of top–down and bottom–up fabrication methods over macroscopic areas. Both are capable of performing near-field lithography with 16 probes in parallel spanning approximately 2 mm. The instruments can work in both ambient and liquid environments, key to many applications in nanobiology. In both, separate control of writing is possible for each probe. We demonstrate the deprotection of self-assembled monolayers of alkylsilanes with photocleavable protecting groups and subsequent growth of nanostructured polymer brushes from these nanopatterned surfaces by atom-transfer radical polymerization.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Weaver, Professor Jonathan
Authors: ul-Haq, E., Liu, Z., Zhang, Y., Alang Ahmad, S.A., Wong, L.S., Hobbs, J., Leggett, G., Micklefield, J., Roberts, C., and Weaver, J.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Journal of Materials Research
ISSN:0884-2914
ISSN (Online):2044-5326
Published Online:25 November 2011

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