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Sensors 2015, 15(12), 31811-31820; doi:10.3390/s151229888

Mechanism of Electrochemical Delamination of Two-Dimensional Materials from Their Native Substrates by Bubbling

1
Key Laboratory of Optoelectronics Technology, College of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100124, China
2
Quantum Device Physics Laboratory, Department of Microtechnology and Nanoscience, Chalmers University of Technology, Göteborg 41296, Sweden
*
Authors to whom correspondence should be addressed.
Academic Editor: Gregory Schneider
Received: 3 November 2015 / Revised: 8 December 2015 / Accepted: 14 December 2015 / Published: 16 December 2015
(This article belongs to the Special Issue Graphene and 2D Material Bionanosensors: Chemistry Matters)
View Full-Text   |   Download PDF [2596 KB, uploaded 16 December 2015]   |  

Abstract

A capacitor-based circuit model is proposed to explain the electrochemical delamination of two-dimensional materials from their native substrates where produced gas bubbles squeeze into the interface. The delamination is actually the electric breakdown of the capacitor formed between the solution and substrate. To facilitate the procedure, the backside of the ubstrate has to be shielded so that the capacitor breakdown voltage can be reached. The screening effect can be induced either by nonreactive ions around the electrode or, more effectively, by an undetachable insulator. This mechanism serves as a guideline for the surface science and applications involving the bubbling delamination. View Full-Text
Keywords: graphene; chemical vapor deposition; electrochemical bubbling transfer graphene; chemical vapor deposition; electrochemical bubbling transfer
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Sun, J.; Fan, X.; Guo, W.; Liu, L.; Liu, X.; Deng, J.; Xu, C. Mechanism of Electrochemical Delamination of Two-Dimensional Materials from Their Native Substrates by Bubbling. Sensors 2015, 15, 31811-31820.

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