The Institute of Scientific and Industrial Research, Osaka University


LAST UPDATE 2020/06/18

  • 研究者氏名
    Researcher Name

    菅沼克昭 Katsuaki SUGANUMA
    特任教授 Specially Appointed Professor
  • 所属
    Professional Affiliation

    The Institute of Scientific and Industrial Research, Osaka University

    F3D Collaborative Research Institute(Director)
  • 研究キーワード
    Research Keywords

    Printed electronics materials
    Interconnection materials
    Power electronics interconnection
    Beyond 5G
Research Subject
Interconnection materials and process development for advanced electronics

研究の背景 Background


Wearable devices have been expanding its market into wide area such as healthcare, automobile, and smart houses in recent years. For further development, stretchability is required in addition to flexibility and, therefore, a technology for low temperature process, stretchable interconnection as well as affordability should be established. On the other hand, energy crisis is another technological issue to be solved at the first priority. WBG semiconductors are expected to be one of the key solutions for this.

研究の目標 Outcome


Wearable and transparent devices by using metallic nanowires, which are ultra-flexible and -stretchable, have been developed in order to realize the IoT world. A new idea for assembling WBGs has been demonstrated as “Zero stress die attach”. The reliability analysis has been carried out from nanoscale to macroscopic. International standardizations have been strongly promoted to support these new technology.

研究図Research Figure

Fig.1. SEM of AgNWs, printed AgNW network on PET and Trans parent TCF film. Fig.2. Printed transparent touch sensor (up) and its responses on a finger and on an arm (a & b). Fig.3. Zero stress die attaches with micron paste (up) and SMB (bottom)

文献 / Publications

・ Ultra thermal stability of LED die-attach achieved by pressureless Ag stress-migration bonding at low temperature, Acta Matel., (2015), in press.
・ Miniaturized flexible antenna printed on high dielectric constant nanopaper composite, Adv. Mater., (2015), in press.