| AVS 65th International Symposium & Exhibition | |
| Nanometer-scale Science and Technology Division | Thursday Sessions |
| Session NS+AN+EM+MI+MN+MP+PS+RM-ThM |
| Session: | Nanopatterning and Nanofabrication |
| Presenter: | Tyler Westover, Brigham Young University |
| Authors: | T. Westover, Brigham Young University B. Aryal, Brigham Young University R.C. Davis, Brigham Young University A. Woolley, Brigham Young University J. Harb, Brigham Young University |
| Correspondent: | Click to Email |
Using DNA origami as a bottom up nanofabrication technique, gold nanowires are formed via directed assembly of gold nanorod seeds and connected by electroless plating. This metal deposition process results in wires with low conductivities compared to bulk gold. Junctions between plated seeds are likely the cause of this low conductivity. Annealing of the nanowires could potentially improve the conductance, however, nanowire annealing at low temperatures (200° C) results in wires coalescing into beads. A polymer encapsulation layer was deposited to maintain overall nanowire shape during annealing. The polymer templated anneal resulted in a resistance reduction, in some cases, to below 1000 ohms. Resistance measurements were performed using a four point resistance configuration. Electrical contacts to the randomly oriented 400 nm long wires were made by electron beam induced deposition. Nanowire morphology was measured before and after annealing by scanning electron and high resolution transmission electron microscopy.