University of Hyogo Academic Staff search

Tomoyuki Yasukawa

  (安川 智之)

Profile Information

Affiliation
Graduate Schoolof Material Science, University of Hyogo
Degree
博士(工学)(東北大学)

J-GLOBAL ID
201801013672318648
researchmap Member ID
B000328123

Papers

 189
  • Kazuki Terao, Masato Suzuki, Ryota Kunikata, Atsushi Suda, Kumi Y. Inoue, Kosuke Ino, Tomokazu Matsue, Tomoyuki Yasukawa
    Sensors and Materials, 35(10) 4781-4781, Oct 25, 2023  
  • Satoko Fujiwara, Misaki Hata, Ikumi Onohara, Daiki Kawasaki, Kenji Sueyoshi, Hideaki Hisamoto, Masato Suzuki, Tomoyuki Yasukawa, Tatsuro Endo
    RSC Advances, 13(31) 21118-21126, Jul 12, 2023  
    Surface plasmon resonance is an optical phenomenon that can be applied for label-free, real-time sensing to directly measure biomolecular interactions and detect biomarkers in solutions. Previous studies using plasmonic nanohole arrays have monitored and detected various biomolecules owing to the propagating surface plasmon polaritons (SPPs). Extraordinary optical transmission (EOT) that occurs in the near-infrared (NIR) and infrared (IR) regions is usually used for detection. Although these plasmonic nanohole arrays improve the sensitivity and throughput for biomolecular detection, these arrays have the following disadvantages: (1) molecular diffusion in the solution (making the detection of biomolecules difficult), (2) the device fabrication's complexities, and (3) expensive equipments for detection in the NIR or IR regions. Therefore, there is a need to fabricate plasmonic nanohole arrays as biomolecular detection platforms using a simple and highly reproducible procedure based on other SPP modes in the visible region instead of the EOT in the NIR or IR regions while suppressing molecular diffusion in the solution. In this paper, we propose the combination of a polymer-based gold nanohole array (Au NHA) obtained through an easy process as a simple platform and dielectrophoresis (DEP) as a biomolecule manipulation method. This approach was experimentally demonstrated using SPP and LSPR modes (not EOT) in the visible region and simple, label-free, rapid, cost-effective trapping and enrichment of nanoparticles (trapping time: <50 s) and bovine serum albumin (trapping time: <1000 s) was realized. These results prove that the Au NHA-based DEP devices have great potential for real-time digital and Raman bioimaging, in addition to biomarker detection.
  • Tomoyuki YASUKAWA, Masato SUZUKI
    Electrochemistry, 91(1) 56-61, Mar 5, 2023  Peer-reviewedInvitedLead authorCorresponding author
  • Masato Suzuki, Shikiho Kawai, Chean Fei Shee, Ryoga Yamada, Seiichi Uchida, Tomoyuki Yasukawa
    Lab on a Chip, 23(4) 692-701, Feb, 2023  Peer-reviewedLast authorCorresponding author
    Simultaneous electrorotation in microwells during chemical stimulation label-free monitoring effect of chemicals in single-cell manner.
  • 安川智之, 鈴木雅登
    表面技術, 73(9) 427-433, Sep, 2022  Peer-reviewedInvitedLead authorCorresponding author

Misc.

 136

Books and Other Publications

 14

Presentations

 180

Teaching Experience

 5

Research Projects

 64

Industrial Property Rights

 13

Social Activities

 5