@article{16cccab28e4446ec8d7fabb7eeb6b8b9,
title = "Graphene Wrinkles Enable Spatially Defined Chemistry",
abstract = "This paper reports a scalable approach to achieve spatially selective graphene functionalization using multiscale wrinkles. Graphene wrinkles were formed by relieving the strain in thermoplastic polystyrene substrates conformally coated with fluoropolymer and graphene skin layers. Chemical reactivity of a fluorination process could be tuned by changing the local curvature of the graphene nanostructures. Patterned areas of graphene nanowrinkles and crumples followed by a single-process plasma reaction resulted in substrates with regions having different fluorination levels. Notably, conductivity of the functionalized graphene nanostructures could be locally tuned as a function of feature size without affecting the mechanical properties.",
keywords = "Graphene functionalization, crumples, lateral heterostructure, multiscale wrinkles, spatially defined properties",
author = "Shikai Deng and Dongjoon Rhee and Lee, {Won Kyu} and Songwei Che and Bijentimala Keisham and Vikas Berry and Odom, {Teri W.}",
note = "Funding Information: This work was supported by the Vannevar Bush Faculty Fellowship from U.S. Department of Defense (DOD N00014-17-1-3023) and the Office of Naval Research (ONR N00014-17-1-2482). This work used the Northwestern University Micro/Nano Fabrication Facility (NUFAB), which is partially supported by Soft and Hybrid Nanotechnology Experimental (SHyNE) Resource (NSF ECCS-1542205), the Materials Research Science and Engineering Center (DMR-1720139), the State of Illinois, and Northwestern University. Samples were characterized using the Electron Probe Instrumentation Center (EPIC) and Scanned Probe Imaging and Development (SPID) facilities of Northwestern University{\textquoteright}s NUANCE Center, which has received support from the SHyNE Resource; the Materials Research Science and Engineering Center (MRSEC) program (NSF DMR-1121262) at the Materials Research Center; the International Institute for Nanotechnology (IIN); the Keck Foundation; and the State of Illinois, through the IIN. The Raman characterization was conducted on WiTech Alpha-300-RA in Berry Research Laboratory at University of Illinois at Chicago. Publisher Copyright: {\textcopyright} 2019 American Chemical Society.",
year = "2019",
month = aug,
day = "14",
doi = "10.1021/acs.nanolett.9b02178",
language = "English (US)",
volume = "19",
pages = "5640--5646",
journal = "Nano Letters",
issn = "1530-6984",
publisher = "American Chemical Society",
number = "8",
}