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(a) Typical TEM image of a Au/PANI-CSA microfiber with core-shell structure, the gold nanowire core is composed of a lot of gold nanoparticles; (b) SEM image of a single Au/PANI-CSA microfiber and attached Pt microleads.
Temperature dependence of the resistance of the single Au/PANI microfiber measured by applying current of 10 and , plotted as . It is noted that the two curves are almost coincident.
Temperature dependence of the resistances of the single Au/PANI-CSA microfiber and a single PANI-CSA microtube (data from Ref. 16). The resistances are normalized by .
Magnetoresistance of the single Au/PANI-CSA microfiber at 2, 4, and , plotted as (a) and (b) .
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