Upright standing graphene formation on substrates |
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Authors: | Yuan Qinghong Hu Hong Gao Junfeng Ding Feng Liu Zhifeng Yakobson Boris I |
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Institution: | Institute of Textiles and Clothing, Hong Kong Polytechnic University, Hong Kong, China. |
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Abstract: | We propose integrating graphene nanoribbons (GNRs) onto a substrate in an upright position whereby they are chemically bound to the substrate at the basal edge. Extensive ab initio calculations show that both nickel (Ni)- and diamond-supported upright GNRs are feasible for synthesis and are mechanically robust. Moreover, the substrate-supported GNRs display electronic and magnetic properties nearly the same as those of free-standing GNRs. Due to the extremely small footprint of an upright GNR on a substrate, standing GNRs are ideal building blocks for synthesis of subnanometer electronic or spintronic devices. Theoretically, standing GNR-based microchips with field-effect transistor (FET) densities up to 10(13) per cm(2) are achievable. |
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