Rapid fabrication of designable large-scale aligned graphene nanoribbons by electro-hydrodynamic nanowire lithography.

Xu, Wentao; Seo, Hong-Kyu; Min, Sung-Yong; Cho, Himchan; Lim, Tae-Seok; Oh, Chang-yeol; Lee, Yeongjun; Lee, Tae-Woo · Adv Mater · 2014

basic_science · Level V

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Abstract

A new technique, electro-hydrodynamic nanowire (e-NW) lithography , is demonstrated for the rapid, inexpensive, and efficient fabrication of graphene nanorib bons (GNRs) on a large scale while simultaneously controlling the location and alignment of the GNRs. A series of interesting GNR architectures, including parallel lines, grids, ladders, and stars are produced. A sub-10-nm-wide GNR is obtained to fabricate field-effect transistors that show a room-temperature on/off current ratio of ca. 70.