Report

Nanoscale Three-Dimensional Patterning of Molecular Resists by Scanning Probes

Science  07 May 2010:
Vol. 328, Issue 5979, pp. 732-735
DOI: 10.1126/science.1187851

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Abstract

For patterning organic resists, optical and electron beam lithography are the most established methods; however, at resolutions below 30 nanometers, inherent problems result from unwanted exposure of the resist in nearby areas. We present a scanning probe lithography method based on the local desorption of a glassy organic resist by a heatable probe. We demonstrate patterning at a half pitch down to 15 nanometers without proximity corrections and with throughputs approaching those of Gaussian electron beam lithography at similar resolution. These patterns can be transferred to other substrates, and material can be removed in successive steps in order to fabricate complex three-dimensional structures.

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