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A. Hiraiwa, K. Horikawa, H. Kawarada "Dynamic space-charge-controlled field emission model of current conduction in metal–insulator–semiconductor capacitors", Journal of Applied Physics, 127, 6, 065307-1/17, (Feb. 12, 2020) (https://doi.org/10.1063/1.5138729)
M. Iwataki, N. Oi, K. Horikawa, S. Amano, J. Nishimura,T. Kageura, M. Inaba, A. Hiraiwa, H. Kawarada, "Over 12000 A/cm2 and 3.2 mΩcm2 Miniaturized Vertical-Type Two-Dimensional Hole Gas Diamond MOSFET" IEEE Electron Dev. Lett., 41, 1, 111-114 (Jan. 2020). (DOI: 10.1109/LED.2019.2953693)
T. Kageura, M. Hideko, I. Tsuyuzaki, A. Morishita, A. Kawano, Y. Sasama, T. Yamaguchi, Y. Takano, M. Tachiki, S. Ooi, K. Hirata, S. Arisawa, H. Kawarada, "Single-crystalline boron-doped diamond superconducting quantum interference devices with regrowth-induced step edge structure", Scientific Reports, 9, 15214/1-9 (Oct. 2019)(https://doi.org/10.1038/s41598-019-51596-w)
S. Okubo, K. Horikawa, H. Kawarada, and A. Hiraiwa, "Gate/insulator-interfacial-dipole-controlled current conduction in Al2O3 metal-insulator-semiconductor capacitors," J. Appl. Phys. 126, 045704/1-10 (July 2019) (DOI: 10.1063/1.5089600).
M. Inaba, T. Ochiai, K. Ohara, R. Kato, T. Maki, T. Ohashi, H. Kawarada, "Correlation between the carbon nanotube growth rate and byproducts in antenna-type remote plasma chemical vapor deposition observed by vacuum ultraviolet absorption spectroscopy" Small, 15, 1901504/1-8 (July 2019). (DOI: 10.1002/smll.201901504)
M. Inaba, H. Kawarada Y. Ohno, "Electrical property measurement of two-dimensional hole-gas layer on hydrogen-terminated diamond surface in vacuum-gap-gate structure", Applied Physics Letters, 114, 253504/1-5, (June 2019).(DOI: 10.1063/1.5099395)
W. Fei, M. Inaba, H. Hoshino, I. Tsuyusaki, S. Kawai, M. Iwataki, H. Kawarada, "Point-arc remote plasma chemical vapor deposition for high-quality single crystal diamond selective growth", Physica Status Solidi A, 1900227/1-6 (June 2019) (DOI: 10.1002/pssa.201900227).
M. Haruyama, S. Onoda, T. Higuchi, W. Kada, , A. Chiba, Y. Hirano, T. Teraji, R. Igarashi, S. Kawai, H. Kawarada, Y. Ishii, R. Fukuda, T. Tanii, J. Isoya, T. Ohshima, & O. Hanaizumi, "Triple nitrogen-vacancy centre fabrication by C5N4Hn ion implantation", Nature communications, 10, 1, 2664/1-9 (June 2019) (DOI: 10.1038/s41467-019-10529-x)
N. Oi, T. Kudo, M. Inaba, S. Okubo, S. Onoda, A. Hiraiwa, H. Kawarada, "Normally-off Two-Dimensional Hole Gas Diamond MOSFETs Through Nitrogen-ion Implantation", IEEE Electron Device Letters, 40, 6, 933-936, (Jun. 2019) (DOI: 10.1109/LED.2019.2912211)
A. Hiraiwa, S. Okubo, K. Horikawa, H.Kawarada, "Advanced photo-assisted capacitance–voltage characterization of insulator/widebandgap semiconductor interface using super-bandgap illumination", Journal of Applied Physics, 125, 17, 175704/1-10 ( May 2019) (DOI: 10.1063/1.5089793)
Y. Shintani, S. Ibori, H. Kawarada "Deoxyribonucleic-acid-sensitive Polycrystalline Diamond Solution-gate Field-effect Transistor with Carboxyl-terminated boron-doped Channel", Analytical Sciences, 35, 8, 923-927, (Aug. 2019) (DOI: 10.2116/analsci.18P520).
E. Suaebah, M. Hasegawa, J. J. Buendia, W. Fei, M. Chandran, A. Hoffman, H. Kawarada, "Functionalization of a Diamond Surface through N2 and H2 Irradiation for Estrogen (17β-estradiol) Aptamer Sensing ", Sensors and Materials, 31, 4(1), 1119-1134 (Apr. 2019) (DOI: 10.18494/SAM.2019.2231) Open Access
S. Kono, T. Kageura, Y. Hayashi, S.-G. Ri, T. Teraji, D. Takeuchi, M. Ogura, H. Kodama, A. Sawabe, M. Inaba, A. Hiraiwa, H. Kawarada "Carbon 1s X-ray photoelectron spectra of realistic samples of hydrogen-terminated and oxygen-terminated CVD diamond (111) and (001) ", Diamond and Related Materials, 93, 105-130. (March 2019) (https://doi.org/10.1016/j.diamond.2019.01.017)
S. Imanishi, K. Horikawa, N. Oi, S. Okubo, T. Kageura, A. Hiraiwa, H. Kawarada, "3.8 W/mm power density for ALD Al2 O 3 -based two-dimensional hole gas diamond MOSFET operating at saturation velocity", IEEE Electron Device Letters, 40 (2), 279-282, (Feb. 2019) (DOI: 10.1109/LED.2018.2886596)
S. Kawai, H. Yamano, T. Sonoda, K. Kato, J. J. Buendia, T. Kageura,R. Fukuda, T. Okada, T. Tanii, T.Higuchi, M. Haruyama, K. Yamada, S. Onoda, T. Ohshima, W. Kada, O. Hanaizumi, A. Stacey, T. Teraji, S. Kono, J. Isoya, H.Kawarada, "Nitrogen-Terminated Diamond Surface for Nanoscale NMR by Shallow Nitrogen-Vacancy Centers", 2019 Jan., The Journal of Physical Chemistry C, 123 (6), 3594-3604. (Jan. 2019) (DOI: 10.1021/acs.jpcc.8b11274)
S.Falina, M.Syamsul, Y.Iyama, M.Hasegawa, Y.Koga, H.Kawarada, "Carboxyl-functionalized graphene SGFET: pH sensing mechanism and reliability of anodization", Diamond and Related Materials, 91, 15-21, (Jan. 2019)( https://doi.org/10.1016/j.diamond.2018.11.005 )
D. L. Creedon, Y. Jiang, K. Ganesan, A. Stacey, T. Kageura, H. Kawarada, J. C. McCallum, B. C. Johnson, S. Prawer, D. N. Jamieson, "Irradiation-Induced Modification of the Superconducting Properties of Heavily-Boron-Doped Diamond" Physical Review Applied, 10 (4), 044016/1-8 (Oct. 2018). (DOI: 10.1103/PhysRevApplied.10.044016)
T. Yamaguchi, Y. Sasama, H. Takeya, Y. Takano, T. Kageura, H. Kawarada, "Ionic-liquid-gating setup for stable measurements and reduced electronic inhomogeneity at low temperatures", Review of Scientific Instruments, 89 (10), 103903/1-5 (Oct. 2018). (DOI: 10.1063/1.5041936)
T. Kageura, M. Hideko, I. Tsuyuzaki, S. Amano, A. Morishita, T. Yamaguchi, Y. Takano, H. Kawarada "Superconductivity in nano- and micro-patterned high quality single crystalline boron-doped diamond films", Diamond and Related Materials, 90, 181-187(Nov. 2018), (https://doi.org/10.1016/j.diamond.2018.10.013)
R. Fukuda, P. Balasubramanian, I. Higashimata, G. Koike, T. Okada, R. Kagami, T. Teraji, S. Onoda, M. Haruyama, K. Yamada, M. Inaba, H. Yamano, F. M. Stürner, S. Schmitt, L. P. McGuinness, F. Jelezko, T. Ohshima, T. Shinada, H.Kawarada, W. Kada & 3 others, "Lithographically engineered shallow nitrogen-vacancy centers in diamond for external nuclear spin sensing", New Journal of Physics, 20(8), 083029/1-9(Aug. 2018)(DOI: 10.1088/1367-2630/aad997)
S. Falina, S. Kawai, N. Oi, H. Yamano, T. Kageura, E. Suaebah, M. Inaba, Y. Shintani, M. Syamsul, H. Kawarada, "Role of carboxyl and amine termination on a boron-doped diamond solution gate field effect transistor (SGFET) for PH sensing" Sensors 2018, 18(7), 2178/1-10 (July 2018), (DOI:10.3390/s18072178)
N. Oi, M. Inaba, S. Okubo, I. Tsuyuzaki, T. Kageura, S. Onoda, A. Hiraiwa H.Kawarada "Vertical-type two-dimensional hole gas diamond metal oxide semiconductor field-effect transistors", Scientific Reports. 8, 10660/1-10 (July 2018) (DOI:10.1038/s41598-018-28837-5)
S. Falina, S. Kawai, N. Oi, H. Yamano, T. Kageura, E. Suaebah, M. Inaba, Y. Shintani, M. Syamsul, H. Kawarada, "Role of carboxyl and amine termination on a boron-doped diamond solution gate field effect transistor (SGFET) for PH sensing" Sensors 2018, 18(7), 2178/1-10 (July 2018), (DOI:10.3390/s18072178)
N. Oi, M. Inaba, S. Okubo, I. Tsuyuzaki, T. Kageura, S. Onoda, A. Hiraiwa H.Kawarada "Vertical-type two-dimensional hole gas diamond metal oxide semiconductor field-effect transistors", Scientific Reports. 8, 10660/1-10 (July 2018) (DOI:10.1038/s41598-018-28837-5)
Hiroshi Kawarada, “High voltage p-channel MOSFETs using two-dimensional hole gas", in Power Electronics Device Applications of Diamond Semiconductors, Eds. Satoshi Koizumi, Hitoshi Umezawa, Julien Pernot, Mariko Suzuki (Woodhead Publishing, June 2018), 347-359. (ISBN: 978-0-08-102183-5)
M. Inaba, K. Ohara, M. Shibuya, T. Ochiai, D. Yokoyama, W. Norimatsu, M. Kusunoki, H. Kawarada, "Electrical contact properties between carbon nanotube ends and a conductive atomic force microscope tip" J. Appl. Phys. 123, 244502/1-8 (June 2018). (DOI: 10.1063/1.5027849)
A. Hiraiwa, T. Sasaki, S. Okubo, K. Horikawa, and H. Kawarada, "Time-dependent dielectric breakdown of atomic-layer-deposited Al2O3 films on GaN," J. Appl. Phys. 123, 155303/1-9 (19 April 2018). (DOI:10.1063/1.5022338)
Mohd Syamsul, N. Oi, S. Okubo, T. Kageura, H. Kawarada, “Heteroepitaxial diamond field-effect transistor for high voltage applications”, IEEE Electron Device Letters, 39, 1, 51-54, (Jan.2018)(DOI: 10.1109/LED.2017.2774290)
K. Matsuda, W. Norimatsu, J. Bao, H. Kawarada, M. Kusunoki, "In-plane electrical conduction mechanisms of highly dense carbon nanotube forests on silicon carbide," J. Appl. Phys. 123, 145104/1-7 (28 Jan. 2018) (DOI:10.1063/1.5004507)