Matsui’s group is working in the fields of Nanotechnology and Biotechnology and the integration of these two areas (i.e., Bionanotechnology) is producing creative sciences with high technology impacts. Matsui’s research interests consist of; 1. 3D Assembly of Nanomaterials using peptide framework (target: solar cells, metamaterials, electronics, optics), 2. Reconfigurable/programable self-assembly system, 3. Development of cancer cell sensing silicon chips 4. Origin of life discovering catalytic peptides (i.e., enzyme-mimic) through virus evolution.