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Davis and Claridge -- Functional pattern transfer to an amorphous elastomeric material.pdf (5.61 MB)
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nm-Resolution Functional Pattern Transfer to an Amorphous Elastomeric Material

preprint
submitted on 10.09.2020 and posted on 11.09.2020 by Tyson C Davis, Jeremiah O. Bechtold, Anni Shi, Erin N. Lang, Anamika Singh, Shelley Claridge
Here, we show that striped monolayers of diyne amphiphiles, assembled on graphite and photopolymerized, can be covalently transferred to polydimethylsiloxane (PDMS), an elastomer common in applications including microfluidics, soft robotics, wearable electronics, and cell culture. This process creates precision polymer films < 1 nm thick, with 1-nm-wide functional patterns, that control interfacial wetting, reactivity, and adsorption of flexible, ultranarrow inorganic nanowires. The polydiacetylenes exhibit polarized fluorescence emission, revealing polymer location, orientation, and environment, and resist engulfment, a common problem in PDMS functionalization. These findings illustrate a route for controlling surface chemistry well below the length scale of heterogeneity in an amorphous material.

Funding

DARPA Young Faculty Award, N66001-17-1-4046

History

Email Address of Submitting Author

claridge@purdue.edu

Institution

Purdue University

Country

United States

ORCID For Submitting Author

0000-0002-8599-0589

Declaration of Conflict of Interest

No conflict of interest

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