Nano Archive

Orientation-controlled self-assembled nanolithography using a polystyrene-polydimethylsiloxane block copolymer

Jung, Yeon Sik and Ross, C. A. (2007) Orientation-controlled self-assembled nanolithography using a polystyrene-polydimethylsiloxane block copolymer. NANO LETTERS, 7 (7). pp. 2046-2050.

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Official URL: http://pubs.acs.org/doi/full/10.1021/nl070924l

Abstract

Templated self-assembly of a cylinder-forming poly(styrene-b-dimethylsiloxane) (PS-PDMS) diblock copolymer has been investigated for nanolithography applications. The large chi-parameter of the blocks and the use of a PDMS-brush substrate surface treatment are especially advantageous for achieving long-range ordering and minimizing defect densities, and the high Si content in PDMS leaves a robust oxide etch mask after two-step reactive ion etching. By adjusting mesa width and solvent-annealing vapor pressure and time, the cylinders can be intentionally oriented parallel or perpendicular to the trench walls. Pattern transfer into thin silica is also demonstrated. This block copolymer system has excellent characteristics for self-assembled nanolithography applications.

Item Type:Article
Uncontrolled Keywords:DIBLOCK COPOLYMER; BOTTOM-UP; LITHOGRAPHY; BLENDS; ARRAYS; MORPHOLOGY; ALIGNMENT; BEHAVIOR; FILMS
Subjects:Material Science > Nanofabrication processes and tools
ID Code:6183
Deposited By:IoN
Deposited On:10 Sep 2009 12:25
Last Modified:10 Sep 2009 12:25

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