Fabrication and developments of nano-gap electrode using self-assembled molecular lithography

Recently, the research of low dimensional nano-structure with nanogap electrode has been intensively studied. In this paper, we describe the fabrication of nanogap electrodes using self-assemble lithography which has advantages of high precision, high yields, and high productivity on the fabrication. Next, single electron transistors (SETs), which consist of Nb nanogap electrode, single molecule of p-xylylenediamine, and Au nano-particle, are shown. Especially, the demonstration of these SETs is attributed to the good connection between Nb nanogap and p-xylylenediamine. Therefore, we introduce the analysis of nano-contacts between nanogap electrode and nano-materials.