Research

Maskless nanopatterning and formation of nanocorrals and switches, for haloalkanes at Si(111)-7 × 7


Reference:

Dobrin, S., Harikumar, K. R., Lim, T. B., Leung, L., McNab, I. R., Polanyi, J. C., Sloan, P. A., Waqar, Z., Yang, J. (S. Y.), Ayissi, S. and Hofer, W. A., 2006. Maskless nanopatterning and formation of nanocorrals and switches, for haloalkanes at Si(111)-7 × 7. Nanotechnology, 18 (4), 044012.

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Official URL:

http://dx.doi.org/10.1088/0957-4484/18/4/044012

Abstract

Labile self-assembled circular patterns of propyl bromide on Si(111)-7×7 at 50 K are shown to convert to corresponding stable circular patterns of atomic bromine through a maskless process of molecular scale imprinting. The imprinting depends on localized chemical reaction induced by either photons or electrons. At 50 K propyl bromide adsorbs in a vertical configuration with lateral attraction. By contrast, at 300 K, octyl chloride and bromide adsorbed horizontally, self-assembling spontaneously into the valuable configurations of switching corrals (‘type I’) and stable corrals (‘type II’). Both types of corral, switching and stable, can be seen to alter the local surface charge distribution.

Details

Item Type Articles
CreatorsDobrin, S., Harikumar, K. R., Lim, T. B., Leung, L., McNab, I. R., Polanyi, J. C., Sloan, P. A., Waqar, Z., Yang, J. (S. Y.), Ayissi, S. and Hofer, W. A.
DOI10.1088/0957-4484/18/4/044012
DepartmentsFaculty of Science > Physics
RefereedYes
StatusPublished
ID Code26640

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