Nanogaps for fabrication of Molecular Devices

摘要

Measuring the electrical properties of single atoms or molecules very often require either sophisticated techniques based on scanning probe microscope, or special contacting schemes which often limit experimental flexibility. In this article we report two different approaches to fabricate nangaps, namely, (a) two angle evaporation and (b) shot modulation. Utilizing these nanogaps fabricated on oxidized aluminium gate, we are capable of exploiting the quasi one-dimensional nature of these materials in combination with e.g. self assembling techniques, surface treatments and nanolithography for device functionality. Experimentally we have demonstrated to achieve sub 5 nm gaps both by two angle evaporation technique and shot modulation technique and compared their yield in nanogap fabrications.