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(a) Photographs of f-CNT-SS shaped into coil, ring, knotted and letter forms. (b) Photograph of clamped (I±) and woven (V±) contacts used to characterize the temperature-dependent resistance of f-CNT-SS with clamp I+ contact expansion. Scale bar: 500 μm. (c) VRH nature (that is, ln(R)~(1/T)1/4) of f-CNT-SS.
