We have prepared solutions of multiwalled carbon nanotubes in Aroclor 1254, a mixture of polychlorinated biphenyls. The solutions are stable at room temperature. Transport measurements were performed using a scanning--tunneling probe on a sample prepared by spin--coating of the solution on gold substrates. Conductance steps were clearly seen. An histogram of a high number of traces shows maximum peaks at integer values of the conductance quantum G0=2e2/h, demonstrating ballistic transport at room temperature along the carbon nanotube over distances longer than 1.4μm.
@article{arxiv.cond-mat/0305261,
title = {Quantum Conductance Steps in Solutions of Multiwalled Carbon Nanotubes},
author = {A. Urbina and I. Echeverría and A. Pérez-Garrido and A. Díaz-Sánchez and J. Abellán},
journal= {arXiv preprint arXiv:cond-mat/0305261},
year = {2016}
}