Faculty Profile for Dr. Yoichi Miyahara

profile photo for Dr. Yoichi Miyahara
Dr. Yoichi Miyahara
Assistant Professor — Physics
RFM 3214
phone: (512) 245-5583

Biography Section

Biography and Education

Dr. Yoichi Miyahara joined the department of physics, Texas State University in January, 2019 as an assistant professor. He is an experimental physicist with electrical and mechanical engineering background. He obtained his Ph.D. in electrical engineering at Waseda University in Tokyo where he worked on the synthesis and tunneling spectroscopy/scanning tunneling microscopy of various transition metal dichalcogenides. He then worked in the department of microengineering at École Polytechnique Fédérale de Lausanne (EPFL) in Switzerland as a research staff where he developed atomic force microscopes which was specifically designed for nanometer scale metrological dimensional measurements. During that period, he was exposed to various aspects of mechatronics instrumentation ranging from optical interferometry to active magnetic control. After he joined the department of physics at McGill University in Montreal as a research associate, he started to work on the development and applications of advanced scanning probe microscopy techniques that are geared toward material property characterization in nanometer scale such as quantum dots, nanoparticles, nanowires and novel energy materials. His research group is currently working on developing new spectroscopic material characterization techniques with nanometer scale spatial resolution based on mechanical detection of relevant signals such as mechanically detected vibrational spectroscopy and electrometry with ultra-high sensitivity.

Research Interests

My research interest is in the development and applications of advanced scanning probe microscopy techniques that are geared toward material property characterization in nanometer scale such as quantum dots, nanoparticles, nanowires and novel energy materials. We are particularly interested in developing new spectroscopic material characterization techniques with nanometer scale spatial resolution based on mechanical detection of relevant signals. Some of the examples are optical spectroscopy and tunneling spectroscopy by force detection.

Selected Scholarly/Creative Work

  • Austin-Bingamon, N. L., D.C., B., & Miyahara, Y. (2024). Control of quality factor of atomic force microscopy cantilever by optomechanical effects. The Japanese Journal of Applied Physics, 63(4), 04SP84. https://doi.org/10.35848/1347-4065/ad39f6
  • Kim, D. S., Miyahara, Y., Dominguez, R. C., Mayorga-Luna, R., Ye, D., Embley, J., … Li, X. (2023). Electrostatic  moiré potential from twisted hexagonal boron nitride layers. Nature Materials, 23, 65–70. https://doi.org/10.1038/s41563-023-01637-7
  • Schumacher, Z., Rejali, R., Cowie, M., Spielhofer, A., Miyahara, Y., & Grutter, P. (2021). Charge carrier inversion in a doped thin film organic semiconductor island. ACS Nano, 15(6), 10377. https://doi.org/10.1021/acsnano.1c02600
  • Schumacher, Z., Rejali, R., Pachlatko, R., Spielhofer, A., Nagler, P., Miyahara, Y., … Grutter, Peter. (2020). Nanoscale Force Sensing of an Ultrafast Nonlinear Optical Response. Proceedings of the National Academy of Sciences of the United States of America, 117(33), 19773. https://doi.org/10/ghdqg8
  • Roy-Gobeil, A., Miyahara, Y., Bevan, K. H., & Grutter, P. (2019). Fully Quantized Electron Transfer Observed in a Single Redox Molecule at a Metal Interface. Nano Letters, 19(9), 6104–6108. https://doi.org/10.1021/acs.nanolett.9b02032

Selected Awards

  • Award / Honor Recipient: 2023 Presidential Distinction for Excellence in Scholary/Creative Activities, Texas State University. February 2023 - Present

Selected Grants

  • Miyahara, Yoichi. MRI:Development of a scanning single-electron box electrometer microscope for studying quantum electronic devices and quantum materials, National Science Foundation, Federal, $420000. (Submitted: January 19, 2021, Funded: September 1, 2021 - August 31, 2023). Grant.
  • Betancourt, Tania (Principal), Brittain, William J (Co-Principal), Irvin, Jennifer A (Co-Principal), Theodoropoulou, Nikoleta (Co-Principal), Martin, Benjamin (Co-Principal), Rhodes, Christopher Peter (Co-Principal), Wistey, Mark A (Co-Principal), Miyahara, Yoichi (Co-Principal), Kerwin, Sean Michael (Co-Principal). TxState-UT PREM Center for Intelligent Materials Assembly (CIMA), National Science Foundation, Federal, $3822000. (Funded: July 1, 2021 - June 30, 2027). Grant.
  • Theodoropoulou, Nikoleta (Principal), Geerts, Wilhelmus J (Co-Principal), Myers, Thomas H (Co-Principal), Rhodes, Christopher Peter (Co-Principal), Zakhidov, Alexander (Co-Principal), Tate, Jitendra S (Co-Principal), Miyahara, Yoichi (Co-Principal). Enhanced Optical, Electrical, and Magnetic Measurement capabilities for Materials and Device Studies in Research and Education, Department of Defense, Federal, $278778. (Submitted: August 28, 2020, Funded: May 10, 2021 - May 9, 2023). Grant.
  • Miyahara, Yoichi (Principal). NSF-CAREER: Characterization of quantum dot qubits by scannable mechanical resonator, National Science Foundation, Federal, $503079. (Submitted: August 3, 2020, Funded: February 1, 2021 - January 31, 2026). Grant.
  • Miyahara, Yoichi. Interfacial electron transfer in single molecules investigated by mechanical single-electron sensitive charge sensing, Texas State University, $8000. (Submitted: October 2022, Funded: January 2023 - May 2024). Grant.

Selected Service Activities

Member
MSEC Student Review Ad Hoc commitee
August 2023-Present
Member
MSEC BS-to-PhD commitee
August 24, 2023-Present
Graduate Advisor
Texas State University, Department of Physics
July 1, 2022-Present
Member
Department of Physics liaison to shared research operation
March 8, 2021-Present
Member
Experimental condensed matter/material physics faculty search commitee
March 2022-May 2023