Institute of Multidisciplinary Research for Advanced Materials, Tohoku University


LAST UPDATE 2021/05/07

  • 研究者氏名
    Researcher Name

    シュタウス・スヴェン Sven STAUSS
    准教授 Associate Professor
  • 所属
    Professional Affiliation

    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University

    金属資源プロセス研究センター エネルギーデバイス化学研究分野
    Center for Mineral Processing and Metallurgy, Chemistry of Energy Conversion Devices
  • 研究キーワード
    Research Keywords

    Microelectromechanical systems (MEMS)
    Biocompatible microbatteries
Research Subject
Development and application of biocompatible microbatteries

研究の背景 Background

Microbatteries—batteries possessing footprints of a few square millimeters and below—hold promise as energy sources for a wide range of applications: implantable medical devices, point-of-care diagnostics, and so-called transient electronics. However, current microbatteries are mainly based on conventional and possibly toxic electrode materials and electrolytes. Consequently, the inclusion of the batteries in implantable medical devices or sensors requires special encapsulation, leading to large, bulky form factors and increase in weight.

The goal of this research is to develop biocompatible microbatteries, adapting and combining established MEMS fabrication processes with additive, direct writing techniques. In addition to their structural and electrochemical characterization, another aim is to explore their possible application in point-of-care sensor devices.

研究の目標 Outcome

Previous research was focused on atmospheric pressure microplasmas and microplasmas generated in extreme conditions, i.e. under supercritical conditions and at temperatures below room temperatures ('cryoplasmas'). In addition to understanding the fundamental physical characteristics of these plasmas, the aim was to use them for materials processing and the synthesis of nanomaterials. Specifically, small-scale plasma sources that can be used for high-growth rate thin film deposition at atmospheric pressure were developed. Another topic was the development of high-pressure microplasma reactors for the synthesis of nanodiamonds and molecular diamond—so-called diamondoids.

研究図Research Figure

Fig.1. High-growth rate deposition of ZnO films. a, inductively coupled microplasma. b, X-ray diffraction of ZnO film. c, Diffraction for different plasma conditions. Fig.2. Synthesis of nanodiamonds by plasmas in supercritical Xe. a, TEM image of nanodiamond. b, Simulated diffraction pattern of a indicating diamond lattice. Fig.3. Diamondoid synthesis by high-pressure microplasmas. a-b, Schematic and photographs of microplasmas generated in supercritical Xe. c, Mass spectrum of synthesized diamantane.

文献 / Publications

Diamondoids: Pan Stanford Publishing (2017). Phys. Plasmas 22, 057103 (2015); Diam. Relat. Mater. 59, 40 (2015); Plasma Sources Sci. Technol. 24, 025021 (2015); Plasma Sources Sci. Technol. 23, 035016 (2014); Jpn. J. Phys. 53, 010214 (2014); J. Phys. D 43, 155203 (2010), J. Supercrit. Fluids 55, 325 (2010).