A facile method for fabrication of responsive micropatterned surfaces

Demiryürek, Rıdvan and Ali, Mariamu Kassim and Özaydın İnce, Gözde (2014) A facile method for fabrication of responsive micropatterned surfaces. Smart Materials and Structures, 23 (9). ISSN 0964-1726 (Print) 1361-665X (Online)

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Responsive micropatterned surfaces are fabricated using a facile, one-step method that allows for the separate control of topography and surface chemistry. Temperature responsive poly(N-isopropylacrylamide) (pNIPAAm), and amphiphilic poly(hydroxyethyl methacrylate-co-perfluorodecylacrylate) (p(HEMA-co-PFA)) polymer thin films are deposited on prestrained polydimethylsiloxane (PDMS) substrates using the initiated chemical vapor deposition (iCVD) technique. Subsequent release of the strain results in the formation of periodic wrinkle structures on the surface of polymer thin films. The iCVD technique allows control of the chemical composition while preserving the functional groups of the polymers intact. Surface topography is controlled separately by tuning elastic modulus of the polymer coatings and substrates. Highly ordered, well-defined wrinkle structures are obtained on pNIPAAm surfaces whereas wrinkles on the amphiphilic surfaces are less ordered due to the difference in elastic moduli of the polymers. Furthermore, process temperature is observed to have detrimental effects on the ordering of the wrinkles.
Item Type: Article
Additional Information: Article Number: 095020
Uncontrolled Keywords: stimuli responsive polymers; surface microwrinkling; initiated chemical vapor deposition
Subjects: T Technology > TP Chemical technology > TP1080 Polymers and polymer manufacture
Divisions: Faculty of Engineering and Natural Sciences > Academic programs > Materials Science & Eng.
Sabancı University Nanotechnology Research and Application Center
Faculty of Engineering and Natural Sciences
Depositing User: Gözde Özaydın İnce
Date Deposited: 21 Nov 2014 22:22
Last Modified: 30 Jul 2019 15:58
URI: https://research.sabanciuniv.edu/id/eprint/24471

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