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A schematic of how HBCs can be assembled to form nanoscale columnar transistors and measured by SWNT point contacts. (A) The structure of contorted liquid crystalline tetra(dodecyloxy)hexabenzocoronene (HBC) 1. (B) Device structure of single-column transistors with SWNT–metal junctions protected by HSQ. (C) Device structure of single-column transistors made by drop casting. Only the nanogaps between SWNT electrodes are covered by HBCs.
