Figure 2: Tunnelling atomic force (TUNA) microscopy image of fibres.
From: Uniform electroactive fibre-like micelle nanowires for organic electronics
(a) Schematic of the TUNA experiment (the black square indicates where the image was obtained). (b) Height and (c) TUNA contact current images of unfragmented rrP3HT106-b-rsP3HT47 fibres (Ln>10 μm). Scale bars, 500 nm. The fibres visible in b but not in c were disconnected from the gold electrode (break in the fibre, and thus the connection to the gold electrode, indicated in the blue box). The sub-monolayer films were prepared by spin-coating of 0.1 mg ml−1 fibre dispersions at 3,000 r.p.m. The gold electrode is positioned at the bottom of the AFM images and not imaged to avoid short-circuiting; see Supplementary Fig. 10a,b for an AFM height image showing the electrode position, as well as the TUNA contact current image at full scale, respectively.
