Figure 4 - The conduction mechanism and conductive atomic force microscope measurements.
From the following article
Digital memory device based on tobacco mosaic virus conjugated with nanoparticles
Ricky J. Tseng, Chunglin Tsai, Liping Ma, Jianyong Ouyang, Cengiz S. Ozkan & Yang Yang
Nature Nanotechnology 1, 72 - 77 (2006) Published online: 4 October 2006
doi:10.1038/nnano.2006.55
a, The temperature-dependent OFF current shows a linear relation for ln(I/T2) versus 1/T at selected voltages. b, The currents in the OFF state also exhibit a linear relation for ln(I) versus V1/2. The currents in the OFF state were attributed to thermionic emission. c, The currents in the ON state were measured at different temperatures with no obvious changes. d, The currents in the ON state were attributed to Fowler–Nordheim tunnelling at a higher voltage regime (>0.8 V). e, The morphology image shows a single TMV–Pt wire. The sample is prepared by drop-casting TMV–Pt wires on the Si substrate. f, When a voltage scan from 0 to 6 V is applied, conductance switching is observed on the TMV–Pt, but the TMV-only configuration shows no switching transition.
