Publications

Detailed Information

Tunable Wettability of Graphene through Nondestructive Hydrogenation and Wettability-Based Patterning for Bioapplications

Cited 19 time in Web of Science Cited 20 time in Scopus
Authors

Son, Jangyup; Lee, Jong-Young; Han, Nalae; Cha, Jongin; Choi, Jonghyun; Kwon, Junyoung; Nam, SungWoo; Yoo, Kyung-Hwa; Lee, Gwan-Hyoung; Hong, Jongill

Issue Date
2020-08
Publisher
American Chemical Society
Citation
Nano Letters, Vol.20 No.8, pp.5625-5631
Abstract
The wettability of graphene has been extensively studied and successfully modified by chemical functionalization. Nevertheless, the unavoidable introduction of undesired defects and the absence of systematic and local control over wettability by previous methods have limited the use of graphene in applications. In addition, microscale patterning, according to wettability, has not been attempted. Here, we demonstrate that the wettability of graphene can be systematically controlled and surface patterned into microscale sections based on wettability without creating significant defects, possible by nondestructive hydrogen plasma. Hydrophobic graphene is progressively converted to hydrophilic hydrogenated graphene (H-Gr) that reaches superhydrophilicity. The great contrast in wettability between graphene and H-Gr makes it possible to selectively position and isolate human breast cancer cells on arrays of micropatterns since strong hydrophilicity facilitates the adsorption of the cells. We believe that our method will provide an essential technique for enabling surface and biological applications requiring microscale patterns with different wettability.
ISSN
1530-6984
URI
https://hdl.handle.net/10371/202085
DOI
https://doi.org/10.1021/acs.nanolett.9b04548
Files in This Item:
There are no files associated with this item.
Appears in Collections:

Related Researcher

  • College of Engineering
  • Department of Materials Science & Engineering
Research Area 2D materials, 2차원 물질, Smiconductor process, semiconductor devices, 반도체 공정, 반도체 소자

Altmetrics

Item View & Download Count

  • mendeley

Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.

Share