Abstract
Bottom up fabrication technology is very important for creating nano-mechanism. Usually, self assembling features of molecules using physical and chemical principle are used, and biopolymer is one of the promising materials for the nano-mechanism. Among many kinds of biopolymers, DNA has special features such as 1)base pitch of 0.33nm, 2) commercial availability of designed base sequence, 3) well developed cut-and-paste and assembling techniques using biotechnology and 4) observation technology by AFMs. For creating one dimensional periodic structure, short DNA blocks are made with cohesive ends, and then they are ligated (linked by enzyme) for forming long structure. For the AFM observation purpose, gold nano particles with a diameter of 5nm is labeled on the DNA, resulting in the particle pitch of tens of nm. Some basic results of the experiments are shown in this article.
