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Contact Angle Analysis for the Prediction of Defect States of Graphene Grafted with Functional Groups
Author(s) -
Bong Jihye,
Park Ju Hyun,
Lim Taekyung,
Kang Seok Ju,
Kwak Sang Kyu,
Ju Sanghyun
Publication year - 2018
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.201800166
Subject(s) - graphene , materials science , contact angle , fabrication , molecular dynamics , nanotechnology , electronics , property (philosophy) , process (computing) , composite material , computer science , computational chemistry , medicine , philosophy , chemistry , alternative medicine , pathology , epistemology , operating system
Mass production of graphene is being actively pursued for applications in electronics and energy devices. However, a rapid and simple method to identify the defect states of graphene (which significantly affects the electronic property), prior to the fabrication of the devices, needs to be developed. The manufacturing process requires an easy assessment tool to identify the characteristics of the defects while avoiding cumbersome measurements. This study demonstrates the contact angle analysis to be a plausible assessment tool with the help of molecular dynamics simulations and experiments. The simulations are performed for water droplets on graphene grafted with the most probable functional groups. The contact angle and the shape of the water droplets are interpreted to estimate the type and density of the defects in graphene. This technique can be used as a screening step to identify defective graphene.