Vertically Aligned Nanopatterns of Amine-Functionalized Ti(3)C(2)MXene via Soft Lithography

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Thin films of well-stacked two-dimensional MXene flakes have been used in various applications, especially in sensors and microscale energy storage devices, such as micro-supercapacitors. Miniaturization and integration of devices, as well as maximization of device performance require nanoscale patterning of MXene, beyond what can be achieved using inkjet or screen printing. However, nanoscale patterning technology for MXene is yet to be developed. In the present work, a simple fabrication method is demonstrated for manufacturing Ti(3)C(2)T(x)MXene films with vertically aligned nanopatterns via soft lithography. This process involves polydimethylsiloxane (PDMS) stamping with line-patterned PDMS molds. The feature size of the vertical line patterning of MXene is controlled with the nanometers accuracy by swelling of the PDMS mold by toluene, which also guides vertical alignment of MXene flakes. As a result, vertically aligned MXene nanopatterns are fabricated with a width of ridges less than 200 nm and 2-mu m regular spacing between the ridges. The oleylamine-functionalized MXene flakes are also developed for better dispersion in toluene, providing a general protocol to fabricate MXene dispersions in nonpolar solvents.
Publisher
WILEY
Issue Date
2020-09
Language
English
Article Type
Article
Citation

ADVANCED MATERIALS INTERFACES, v.7, no.18, pp.2000424

ISSN
2196-7350
DOI
10.1002/admi.202000424
URI
http://hdl.handle.net/10203/281909
Appears in Collection
CBE-Journal Papers(저널논문)
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