Making electronic contacts to mesoscopic quasi-one dimensional materials

Two-dimensional thin films of quasi-two-dimensional van der Waals (VdW) material has been studied intensively in the past decade. On the other hand, those of quasi-one-dimensional VdW materials is approximately uncultivated field. Variety of phenomena arising from correlated electrons, is expected in mesoscopic scale. Here, we report the methods to make electronic contact to mesoscopic quasi one-dimensional materials. By use of thin flake of hexagonal boron nitride and transfer technique of atomic layers, we have attained good and reliable electronic contact to mesoscopic quasi-1-D VdW materials. This should be a basic technology to explore transport phenomena in mesoscopic quasi-one-dimensional systems.