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Madou, Mark
BIO-MEMS Lab
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  • Medical Diagnostics

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Multiscale Carbon Structures Fabricated by Direct Micropatterning of Electrospun Mats of SU-8 Photoresist Nanofibers

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Title
Multiscale Carbon Structures Fabricated by Direct Micropatterning of Electrospun Mats of SU-8 Photoresist Nanofibers
Author
Sharma, Chandra S.Sharma, AshutoshMadou, Marc
Keywords
Carbon structures; Electrospuns; Hydrophilic carbons; Micro patterning; Micro-domains; Micropatches; Micropatterned; Multiscales; Nanotextured surface; Negative photoresists; Novel methods; Optimized conditions; Ordered array; Polymeric nanofibers; Silicon substrates; SU-8 photoresist; Water contact angle
Issue Date
201002
Publisher
AMER CHEMICAL SOC
Citation
LANGMUIR, v.26, no.4, pp.2218 - 2222
Abstract
A novel method for the direct fabrication of arrays of micropatterned polymeric and carbon nanofiber Structures on my substrate is developed. First SU-8, an epoxy-based negative photoresist, is electrospun under optimized conditions to produce a layer of polymeric nanofibers. Next, this nanofibrous mat is micropattererned using photolithography, and Finally, pyrolysis produces ordered arrays of microdomains containing carbon nanofibers. The nanotextured surfaces Of carbon nanofibers are shown to be very hydrophobic (water contact angle similar to 130 degrees). Micropatterning thus generates a substantial wettability contrast of nanofiber domains with intervening micropatches of very hydrophilic carbon (similar to 20 degrees) or silicon substrates.
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DOI
http://dx.doi.org/10.1021/la904078r
ISSN
0743-7463
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