Electrically conducting wires 10-200 μm in diameter were controllably formed over electrically insulating substrates by electropolymerization of a conducting polymer using a scanning micro-needle. The conductivity of the wire was estimated from the I-V characteristics to be about 0.5-200 S cm-1 which is not inferior to the reported conductivity of an electrochemically polymerized polypyrrole (PPy) film. Wires were formed like bridges between two conducting electrodes over glass substrates. This technique can be used for wire bonding of elements or electrodes.
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