Formation and control of two-dimensional deoxyribonucleic acid network

Recently, we have successfully fabricated large-scale deoxyribonucleic acid (DNA) networks on mica surfaces using a simple fabrication method. This report describes how we fabricated a variety of structures depending on the type of DNA, and controlled these structures using a post-treatment ethanol which we observed using atomic force microscopy. We found that the height of fiber in the DNA network depended on the type of DNA and its original length, and that the fiber height and mesh diameter could be shortened and widened, respectively, with ethanol treatment.