Abstract
The direct observation of the domain size and defect distribution in a graphene film is important for the development of electronic applications involving graphene. Here we report a promising method for observing graphene domains grown by chemical vapour deposition. The unavoidable development of crack or pinhole defects during the growth and transfer processes is visualized using a liquid crystal layer. Liquid crystal molecules align anisotropically with respect to the graphene domains and exhibit distinct birefringence properties that can be used to image the graphene domains. This approach is useful for visualizing the crack distributions and their generation process in graphene films under external strain. This type of simple observation method provides an effective route to evaluating the quality and reliability of graphene sheets for use in various electronic devices.
| Original language | English |
|---|---|
| Article number | A3484 |
| Journal | Nature communications |
| Volume | 5 |
| DOIs | |
| Publication status | Published - 2014 Mar 24 |
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All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Biochemistry, Genetics and Molecular Biology(all)
- Physics and Astronomy(all)
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Detection of graphene domains and defects using liquid crystals. / Son, Jong Ho; Baeck, Seung Jae; Park, Min Ho; Lee, Jae Bok; Yang, Cheol Woong; Song, Jang Kun; Zin, Wang Cheol; Ahn, Jong Hyun.
In: Nature communications, Vol. 5, A3484, 24.03.2014.Research output: Contribution to journal › Article
TY - JOUR
T1 - Detection of graphene domains and defects using liquid crystals
AU - Son, Jong Ho
AU - Baeck, Seung Jae
AU - Park, Min Ho
AU - Lee, Jae Bok
AU - Yang, Cheol Woong
AU - Song, Jang Kun
AU - Zin, Wang Cheol
AU - Ahn, Jong Hyun
PY - 2014/3/24
Y1 - 2014/3/24
N2 - The direct observation of the domain size and defect distribution in a graphene film is important for the development of electronic applications involving graphene. Here we report a promising method for observing graphene domains grown by chemical vapour deposition. The unavoidable development of crack or pinhole defects during the growth and transfer processes is visualized using a liquid crystal layer. Liquid crystal molecules align anisotropically with respect to the graphene domains and exhibit distinct birefringence properties that can be used to image the graphene domains. This approach is useful for visualizing the crack distributions and their generation process in graphene films under external strain. This type of simple observation method provides an effective route to evaluating the quality and reliability of graphene sheets for use in various electronic devices.
AB - The direct observation of the domain size and defect distribution in a graphene film is important for the development of electronic applications involving graphene. Here we report a promising method for observing graphene domains grown by chemical vapour deposition. The unavoidable development of crack or pinhole defects during the growth and transfer processes is visualized using a liquid crystal layer. Liquid crystal molecules align anisotropically with respect to the graphene domains and exhibit distinct birefringence properties that can be used to image the graphene domains. This approach is useful for visualizing the crack distributions and their generation process in graphene films under external strain. This type of simple observation method provides an effective route to evaluating the quality and reliability of graphene sheets for use in various electronic devices.
UR - http://www.scopus.com/inward/record.url?scp=84906678471&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84906678471&partnerID=8YFLogxK
U2 - 10.1038/ncomms4484
DO - 10.1038/ncomms4484
M3 - Article
AN - SCOPUS:84906678471
VL - 5
JO - Nature Communications
JF - Nature Communications
SN - 2041-1723
M1 - A3484
ER -