Research Institute for Electronic Science, Hokkaido University


LAST UPDATE 2017/02/25

  • 研究者氏名
    Researcher Name

    居城邦治 Kuniharu IJIRO
    教授 Professor
  • 所属
    Professional Affiliation

    Research Institute for Electronic Science, Hokkaido University

    Section of Biology and Life Sciences, Laboratory of Molecular Devices
  • 研究キーワード
    Research Keywords

    DNA ミメティクス
    DNA mimetics
    Bottom-up nanofabrication
Research Subject
Development of nanofabrication method based on biomimetic self-assembly

研究の背景 Background


The development of advanced information society rewires various kinds of electronic devices with high performance produced by low-cost nanofabrication. Self-assembly is referred to as a 'bottom-up' manufacturing technique in contrast to a 'top-down' technique such as lithography. Continued advances in templated self-assembly have led to the generation of highly controllable conductive nanowires as nanoscale circuits with potential applications in nanoelectronics that were previously difficult to produce through top-down methods.

研究の目標 Outcome


Bioorganisms are capable of efficient energy transformation, selective synthesis of biomolecules and interactive information processing. All these processes are based on effective self-assembly of molecules. Of the many templates available, DNA behaves as an insulator, while offering the advantages of a well-defined linear structure, sequence programmability, and rich chemical functionality. These properties have allowed the DNA-templated assembly of a wide variety of materials of interest.

研究図Research Figure

Fig.1. Polyaniline and gold nanoparticle/polyaniline nanowires are fabricated via DNA templating. Fig.2. Schematic illustration and AFM images for the bottom-up organization of a double-tunnel junction SED by taking advantage of the sequencespecific Pt metallization of a DNAAuNP conjugate.Fig.3. Sequence-selective metallization of the triblock DNA copolymer. (A) AFM image of the platinum metal-bound triblock DNA copolymer. (B) Typical cross-sectional images of segments (C) Height histograms of segments.

文献 / Publications

ACS Appl. Nano Mater., 8, 10321 (2022)., Nano Today, 39, 101154 (2021)., J. Mater. Chem. B., 1, 5899 (2013).