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2021

国際学会

1. A. Reem, T. Yabe, Y. Iyama, M. A. Quang N. Nguyen, H. Kawarada "Effect of Surface Charge Model in the Characterization of Two-dimensional Hydrogenated Nanocrystalline-diamond Metal Oxide Semiconductor Field Effect Transistor (MOSFET) with Device Simulation" 16th IEEE Nanotechnology Materials and Devices Conference NMDC 2021, Dec. 12-15, 2021 (Oral, Dec. 15, 2021)
2. K. Hayasaka, K. Kanehisa, T. Tatsuishi, Y. Saito, Y. Ueda, K. Ootani, T. Tanii, S. Onoda, J. Isoya, S. Enomoto, S. Kono, H. Kawarada,"Fabrication of High-Density NV Ensemble Using Vacancies Created by Transmission Electron Microscope" 2021 Virtual MRS Fall Meeting & Exhibit, Virtual Conference, Dec. 6-8, 2021 (Oral, Dec. 6, 2021, Best Student Oral Presentation Award)
3. F. Asai, K. Kudara, M. Arai, Y. Suzuki, A. Hiraiwa, H. Kawarada, "Lowest contact resistance for high drain current density > 1 A/mm at Diamond MOSFETs with heavily boron-doped source and drain", 2021 MRS Fall Meeting & Exhibit, Boston, USA, Nov 29-Dec 2, 2021.(Oral, Nov. 30, 2021)
4. Y. Nameki, T. Bi, W. Fei, J. Tsunoda,  N. Niikura,  A. Hiraiwa, H. Kawarada, "C-Si Bonded 2DHG Diamond MOSFETs—Improvement of Interface Characteristics by Thin Gate Insulating Film", 2021 MRS Fall Meeting & Exhibit, Boston, USA, Nov. 29-Dec. 2, 2021. (Oral, Nov. 30, 2021)
5. H. Sato, T. Takarada, S. Kawaguchi, Y. H. Chang, H. Kawarada, "Propagation Characteristics for Seawater Wireless Communication up to 25 m of Transmission Distance by Utilizing Diamond Solution Gate FET", 2021 MRS Fall Meeting & Exhibit, Boston, USA, Nov. 29-Dec. 2, 2021. (Oral, Nov. 30, 2021, Best Student Oral Presentation Award)
6. K. Ota, J. Tsunoda, N. Niikura, A. Morishita, A. Hiraiwa, H. Kawarada "High Voltage (-580 V) Vertical- Diamond MOSFET by 2DHG Channel and Implementing p--Drift Layer", 2021 MRS Fall Meeting & Exhibit, Boston, USA, Nov. 29-Dec. 2, 2021(Oral, Nov. 30 2021)
7. H. Kawarada, "Prospects for complementary high speed power inverters by wide bandgap semiconductors: Role of recent development of high frequency diamond power p-FETs", 日台半導体先端技術シンポジウム, Institute for Information Industry (Taiwan), Virtual Conference, Nov. 30, 2021 (Invited)
8. H. Kawarada, "Complementary power inverters using wide bandgap semiconductors for noise-free motorized society", International Symposium on Design & Engineering by Joint Inverse Innovation for Materials Architecture (DEJI2MA), Virtual Conference, Nov. 5, 2021 (Invited)
9. X. Zhu, T. Bi, Y. Fu, Y. Chang, J. Liu, C. Li, H. Kawarada."C-Si interface on (111) diamond MOSFET with excellent normally-off operation", 2021 International Conference on Solid State Devices and Materials (SSDM2021), All-Virtual Conference, Sept. 6-9, 2021 (Oral, Sep. 8, 2021)
10. K. Hayasaka, K. Kanehisa, T. Tatsuishi, Y. Saito, Y. Ueda, K. Ootani, T. Tanii, S. Onoda, J. Isoya, S. Enomoto, S. Kono, H. Kawarada, "Spin Characterization of High-Density NV Ensemble Using Vacancies Created by Transmission Electron Microscope" 2021 International Conference on Solid State Devices and Materials (SSDM2021), All-Virtual Conference, Sept. 6-9, 2021 (Oral, Sep. 7, 2021)
11. F. Asai, K. Kudara, M. Arai, Y. Suzuki, A. Hiraiwa, H. Kawarada, "Lowest contact resistance for high current density > 1 A/mm at Diamond MOSFETs with heavily boron-doped source and drain" 2021 International Conference on Solid State Devices and Materials (SSDM2021), All-Virtual conference, Sept. 6-9, 2021 (Oral, Sept. 8, 2021).
12. K. Ota, J. Tsunoda, N. Niikura, A. Morishita, A. Hiraiwa, H. Kawarada, "High Breakdown Voltage (-580 V) in (001) Vertical-Type 2DHG Diamond MOSFET by p--drift layer", 2021 International Conference on Solid State Devices and Materials (SSDM2021), All-Virtual Conference, Sept. 6-9, 2021 (Oral, Sep. 8, 2021)
13. H. Sato, T. Takarada, S. Kawaguchi, Y. H. Chang, H. Kawarada, "Electric Signal Propagation up to a Transmission Distance 25 m in Seawater utilizing Diamond Solution Gate FET", 2021 International Conference on Solid State Devices and Materials (SSDM2021), All-Virtual Conference, Sept. 6-9, 2021 (Oral, Sept. 8, 2021)
14. H. Kawarada, “Diamond FETs: from C-H termination to C-Si connection and 3D integration”, 14th International Conference on New Diamond and Nano Carbons 2020/2021 (NDNC2020/2021), Virtual Conference, June 7-9, 2021 (Invited, June 7, 2021)
15. A. Reem , T. Yabe , Quang N. Nguyen , A. Mohammed, H. Kawarada, “2DHG Hydrogenated Diamond MOSFET Device Model Simulated Normally-off Operation using Fixed Positive Surface Charge Sheet and Nitrogen Doping”, 14th International Conference on New Diamond and Nano Carbons 2020/2021 (NDNC2020/2021), Virtual Conference, June 7-9, 2021 (Poster, June 7, 2021)
16. Y.H. Chang, Y. Iyama, S. Kawaguchi, H. Kawarada, "Over 59 mV/pH sensitivity with fluorocarbon thin film via fluorine termination for pH sensing using boron-doped diamond solution-gate field-effect transistors", 14th International Conference on New Diamond and Nano Carbons 2020/2021, Virtual Conference, Jun. 7-9, 2021 (Poster, Jun. 8, 2021).
17. Y. Takahashi, A. Morishita, S. Amano, T. Kageura, Y. Takano, M. Tachiki, S. Ooi, S. Arisawa, H. Kawarada, "Boron-doped Diamond SQUIDs with Miniaturized Josephson Junctions", 14th International Conference on New Diamond and Nano Carbons 2020/2021 (NDNC2020/2021), Virtual Conference, June 7-9 2021 (Poster, June 8, 2021).
18. S. Kawaguchi, Y. Iyama, Y. H. Chang, K. Tadenuma, Y. Shintani, Y. Tao, K. Mori and H.Kawarada, "Vessel Gated pH Measurement System Using Insensitive Diamond Solution Gate FET", 14th International Conference on New Diamond and Nano Carbons 2020/2021(NDNC 2020/2021), Virtual Conference, June 7-9, 2021(Oral, June 7, 2021)
19. K. Kanehisa，T. Tatsuishi，T. Sonoda，K. Kawakatsu，Y. Hata，T. Tanii，S. Onoda，A. Stacey，J. Isoya，S. Kono，H. Kawarada, "Fabrication of 2D NV Ensemble and its Spin Property Improvement", 14th International Conference on New Diamond and Nano Carbons 2020/2021(NDNC 2020/2021), Virtual Conference, June 7-9, 2021 (Poster, June 8, 2021)