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Research Output 1980 2019

  • 7116 Citations
  • 45 h-Index
  • 284 Article
  • 26 Conference contribution
  • 9 Chapter
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Article
2019

Advanced photo-assisted capacitance-voltage characterization of insulator/wide-bandgap semiconductor interface using super-bandgap illumination

Hiraiwa, A., Okubo, S., Horikawa, K. & Kawarada, H., 2019 May 7, In : Journal of Applied Physics. 125, 17, 175704.

Research output: Contribution to journalArticle

capacitance
illumination
insulators
electric potential
charging

Carbon 1s X-ray photoelectron spectra of realistic samples of hydrogen-terminated and oxygen-terminated CVD diamond (111) and (001)

Kono, S., Kageura, T., Hayashi, Y., Ri, S. G., Teraji, T., Takeuchi, D., Ogura, M., Kodama, H., Sawabe, A., Inaba, M., Hiraiwa, A. & Kawarada, H., 2019 Mar 1, In : Diamond and Related Materials. 93, p. 105-130 26 p.

Research output: Contribution to journalArticle

Diamond
Photoelectrons
Hydrogen
Chemical vapor deposition
Diamonds

Carboxyl-functionalized graphene SGFET: pH sensing mechanism and reliability of anodization

Falina, S., Syamsul, M., Iyama, Y., Hasegawa, M., Koga, Y. & Kawarada, H., 2019 Jan 1, In : Diamond and Related Materials. 91, p. 15-21 7 p.

Research output: Contribution to journalArticle

Gates (transistor)
Graphite
Graphene
Defect density
Functional groups

Functionalization of a diamond surface through N 2 and H 2 irradiation for estrogen (17β-estradiol) aptamer sensing

Suaebah, E., Hasegawa, M., Buendia, J. J., Fei, W., Chandran, M., Hoffman, A. & Kawarada, H., 2019 Jan 1, In : Sensors and Materials. 31, 4, p. 1119-1134 16 p.

Research output: Contribution to journalArticle

Open Access
estrogens
Diamond
Estradiol
Diamonds
Estrogens

Nitrogen-Terminated Diamond Surface for Nanoscale NMR by Shallow Nitrogen-Vacancy Centers

Kawai, S., Yamano, H., Sonoda, T., Kato, K., Buendia, J. J., Kageura, T., Fukuda, R., Okada, T., Tanii, T., Higuchi, T., Haruyama, M., Yamada, K., Onoda, S., Ohshima, T., Kada, W., Hanaizumi, O., Stacey, A., Teraji, T., Kono, S., Isoya, J. & 1 othersKawarada, H., 2019 Feb 14, In : Journal of Physical Chemistry C. 123, 6, p. 3594-3604 11 p.

Research output: Contribution to journalArticle

Diamond
Vacancies
Diamonds
Nitrogen
diamonds

Normally-OFF Two-Dimensional Hole Gas Diamond MOSFETs Through Nitrogen-Ion Implantation

Oi, N., Kudo, T., Inaba, M., Okubo, S., Onoda, S., Hiraiwa, A. & Kawarada, H., 2019 Jun 1, In : IEEE Electron Device Letters. 40, 6, p. 933-936 4 p., 8715486.

Research output: Contribution to journalArticle

Diamond
MOSFET devices
Ion implantation
Diamonds
Nitrogen

Triple nitrogen-vacancy centre fabrication by C5N4H n ion implantation

Haruyama, M., Onoda, S., Higuchi, T., Kada, W., Chiba, A., Hirano, Y., Teraji, T., Igarashi, R., Kawai, S., Kawarada, H., Ishii, Y., Fukuda, R., Tanii, T., Isoya, J., Ohshima, T. & Hanaizumi, O., 2019 Dec 1, In : Nature communications. 10, 1, 2664.

Research output: Contribution to journalArticle

Open Access
Ion implantation
Vacancies
ion implantation
Nitrogen
registers
2018

3.8 W/mm power density for ALD Al2 O 3 -based two-dimensional hole gas diamond MOSFET operating at saturation velocity

Imanishi, S., Horikawa, K., Oi, N., Okubo, S., Kageura, T., Hiraiwa, A. & Kawarada, H., 2018 Jan 1, (Accepted/In press) In : IEEE Electron Device Letters.

Research output: Contribution to journalArticle

Diamond
MOSFET devices
Diamonds
Gases
Field effect transistors
1 Citation (Scopus)

Electrical contact properties between carbon nanotube ends and a conductive atomic force microscope tip

Inaba, M., Ohara, K., Shibuya, M., Ochiai, T., Yokoyama, D., Norimatsu, W., Kusunoki, M. & Kawarada, H., 2018 Jun 28, In : Journal of Applied Physics. 123, 24, 244502.

Research output: Contribution to journalArticle

electric contacts
carbon nanotubes
microscopes
electrical resistivity
metals
2 Citations (Scopus)

Heteroepitaxial Diamond Field-Effect Transistor for High Voltage Applications

Syamsul, M., Oi, N., Okubo, S., Kageura, T. & Kawarada, H., 2018 Jan 1, In : IEEE Electron Device Letters. 39, 1, p. 51-54 4 p., 815093.

Research output: Contribution to journalArticle

Diamond
Field effect transistors
Diamonds
Electric potential
Electric breakdown

In-plane electrical conduction mechanisms of highly dense carbon nanotube forests on silicon carbide

Matsuda, K., Norimatsu, W., Bao, J., Kawarada, H. & Kusunoki, M., 2018 Jan 28, In : Journal of Applied Physics. 123, 4, 045104.

Research output: Contribution to journalArticle

silicon carbides
carbon nanotubes
conduction
electrical resistivity
temperature dependence

Ionic-liquid-gating setup for stable measurements and reduced electronic inhomogeneity at low temperatures

Takahide, Y., Sasama, Y., Takeya, H., Takano, Y., Kageura, T. & Kawarada, H., 2018 Oct 1, In : Review of Scientific Instruments. 89, 10, 103903.

Research output: Contribution to journalArticle

Ionic liquids
inhomogeneity
liquids
electronics
Field effect transistors
1 Citation (Scopus)

Irradiation-Induced Modification of the Superconducting Properties of Heavily-Boron-Doped Diamond

Creedon, D. L., Jiang, Y., Ganesan, K., Stacey, A., Kageura, T., Kawarada, H., McCallum, J. C., Johnson, B. C., Prawer, S. & Jamieson, D. N., 2018 Oct 5, In : Physical Review Applied. 10, 4, 044016.

Research output: Contribution to journalArticle

boron
diamonds
irradiation
superconductivity
defects
1 Citation (Scopus)

Lithographically engineered shallow nitrogen-vacancy centers in diamond for external nuclear spin sensing

Fukuda, R., Balasubramanian, P., Higashimata, I., Koike, G., Okada, T., Kagami, R., Teraji, T., Onoda, S., Haruyama, M., Yamada, K., Inaba, M., Yamano, H., Stürner, F. M., Schmitt, S., McGuinness, L. P., Jelezko, F., Ohshima, T., Shinada, T., Kawarada, H., Kada, W. & 3 othersHanaizumi, O., Tanii, T. & Isoya, J., 2018 Aug 1, In : New Journal of Physics. 20, 8, 083029.

Research output: Contribution to journalArticle

nuclear spin
diamonds
nitrogen
nitrogen ions
stopping

Role of carboxyl and amine termination on a boron-doped diamond solution gate field effect transistor (SGFET) for PH sensing

Falina, S., Kawai, S., Oi, N., Yamano, H., Kageura, T., Suaebah, E., Inaba, M., Shintani, Y., Syamsul, M. & Kawarada, H., 2018 Jul 6, In : Sensors (Switzerland). 18, 7, 2178.

Research output: Contribution to journalArticle

Gates (transistor)
Diamond
Boron
Amines
Diamonds

Superconductivity in nano- and micro-patterned high quality single crystalline boron-doped diamond films

Kageura, T., Hideko, M., Tsuyuzaki, I., Amano, S., Morishita, A., Yamaguchi, T., Takano, Y. & Kawarada, H., 2018 Nov 1, In : Diamond and Related Materials. 90, p. 181-187 7 p.

Research output: Contribution to journalArticle

Diamond
Boron
Diamond films
Superconductivity
Superconducting transition temperature
2 Citations (Scopus)

Time-dependent dielectric breakdown of atomic-layer-deposited Al2O3 films on GaN

Hiraiwa, A., Sasaki, T., Okubo, S., Horikawa, K. & Kawarada, H., 2018 Apr 21, In : Journal of Applied Physics. 123, 15, 155303.

Research output: Contribution to journalArticle

breakdown
life (durability)
insulation
semiconductor devices
passivity
4 Citations (Scopus)

Vertical-type two-dimensional hole gas diamond metal oxide semiconductor field-effect transistors

Oi, N., Inaba, M., Okubo, S., Tsuyuzaki, I., Kageura, T., Onoda, S., Hiraiwa, A. & Kawarada, H., 2018 Dec 1, In : Scientific Reports. 8, 1, 10660.

Research output: Contribution to journalArticle

metal oxide semiconductors
field effect transistors
diamonds
gases
current density
2017
1 Citation (Scopus)
Solid-state sensors
pH sensors
Gates (transistor)
Diamond
Boron
2 Citations (Scopus)

Aptamer-based carboxyl-terminated nanocrystalline diamond sensing arrays for adenosine triphosphate detection

Suaebah, E., Naramura, T., Myodo, M., Hasegawa, M., Shoji, S., Buendia, J. J. & Kawarada, H., 2017 Jul 21, In : Sensors (Switzerland). 17, 7, 1686.

Research output: Contribution to journalArticle

Diamond
adenosine triphosphate
Diamonds
Adenosine Triphosphate
diamonds
5 Citations (Scopus)

Aptamer strategy for ATP detection on nanocrystalline diamond functionalized by a nitrogen and hydrogen radical beam system

Suaebah, E., Seshimo, Y., Shibata, M., Kono, S., Hasegawa, M. & Kawarada, H., 2017 Jan 28, In : Journal of Applied Physics. 121, 4, 044506.

Research output: Contribution to journalArticle

adenosine triphosphate
deoxyribonucleic acid
diamonds
nitrogen
hydrogen
11 Citations (Scopus)

Charge state stabilization of shallow nitrogen vacancy centers in diamond by oxygen surface modification

Yamano, H., Kawai, S., Kato, K., Kageura, T., Inaba, M., Okada, T., Higashimata, I., Haruyama, M., Tanii, T., Yamada, K., Onoda, S., Kada, W., Hanaizumi, O., Teraji, T., Isoya, J. & Kawarada, H., 2017 Apr 1, In : Japanese Journal of Applied Physics. 56, 4, 04CK08.

Research output: Contribution to journalArticle

Vacancies
Surface treatment
Diamonds
Stabilization
stabilization
16 Citations (Scopus)

Durability-enhanced two-dimensional hole gas of C-H diamond surface for complementary power inverter applications

Kawarada, H., Yamada, T., Xu, D., Tsuboi, H., Kitabayashi, Y., Matsumura, D., Shibata, M., Kudo, T., Inaba, M. & Hiraiwa, A., 2017 Feb 20, In : Scientific Reports. 7, 42368.

Research output: Contribution to journalArticle

durability
field effect transistors
diamonds
gases
high voltages
10 Citations (Scopus)

Effect of a radical exposure nitridation surface on the charge stability of shallow nitrogen-vacancy centers in diamond

Kageura, T., Kato, K., Yamano, H., Suaebah, E., Kajiya, M., Kawai, S., Inaba, M., Tanii, T., Haruyama, M., Yamada, K., Onoda, S., Kada, W., Hanaizumi, O., Teraji, T., Isoya, J., Kono, S. & Kawarada, H., 2017 May 1, In : Applied Physics Express. 10, 5, 055503.

Research output: Contribution to journalArticle

Nitridation
Vacancies
Diamonds
diamonds
Nitrogen
25 Citations (Scopus)

Fabrication of photo-electrochemical biosensors for ultrasensitive screening of mono-bioactive molecules: The effect of geometrical structures and crystal surfaces

Akhtar, N., Emran, M. Y., Shenashen, M. A., Khalifa, H., Osaka, T., Faheem, A., Homma, T., Kawarada, H. & El-Safty, S. A., 2017, In : Journal of Materials Chemistry B. 5, 39, p. 7985-7996 12 p.

Research output: Contribution to journalArticle

Biosensors
Screening
Nitrogen
Carbon
Dopamine
5 Citations (Scopus)

High Voltage Stress Induced in Transparent Polycrystalline Diamond Field-Effect Transistor and Enhanced Endurance Using Thick Al2O3 Passivation Layer

Syamsul, M., Kitabayashi, Y., Kudo, T., Matsumura, D. & Kawarada, H., 2017 May 1, In : IEEE Electron Device Letters. 38, 5, p. 607-610 4 p., 7882717.

Research output: Contribution to journalArticle

Diamond
Field effect transistors
Passivation
Diamonds
Stress measurement
24 Citations (Scopus)

Normally-Off C-H Diamond MOSFETs with Partial C-O Channel Achieving 2-kV Breakdown Voltage

Kitabayashi, Y., Kudo, T., Tsuboi, H., Yamada, T., Xu, D., Shibata, M., Matsumura, D., Hayashi, Y., Syamsul, M., Inaba, M., Hiraiwa, A. & Kawarada, H., 2017 Mar 1, In : IEEE Electron Device Letters. 38, 3, p. 363-366 4 p., 7837668.

Research output: Contribution to journalArticle

Diamond
MOSFET devices
Electric breakdown
Diamonds
Hydrogen
6 Citations (Scopus)

Post-deposition-annealing effect on current conduction in Al2O3 films formed by atomic layer deposition with H2O oxidant

Hiraiwa, A., Matsumura, D., Okubo, S. & Kawarada, H., 2017 Feb 21, In : Journal of Applied Physics. 121, 7, 074502.

Research output: Contribution to journalArticle

atomic layer epitaxy
conduction
annealing
leakage
permittivity
2 Citations (Scopus)

Sheet resistance underneath the Au ohmic-electrode on hydrogen-terminated surface-conductive diamond (001)

Kono, S., Sasaki, T., Inaba, M., Hiraiwa, A. & Kawarada, H., 2017 Nov 1, In : Diamond and Related Materials. 80, p. 93-98 6 p.

Research output: Contribution to journalArticle

Diamond
Sheet resistance
Hydrogen
Diamonds
diamonds
24 Citations (Scopus)

Smart power devices and ICs using GaAs and wide and extreme bandgap semiconductors

Chow, T. P., Omura, I., Higashiwaki, M., Kawarada, H. & Pala, V., 2017 Mar 1, In : IEEE Transactions on Electron Devices. 64, 3, p. 856-873 18 p., 7851006.

Research output: Contribution to journalArticle

Energy gap
Semiconductor materials
Diamond
Silicon
Power electronics
2 Citations (Scopus)

Threshold voltage control of electrolyte solution gate field-effect transistor by electrochemical oxidation

Naramura, T., Inaba, M., Mizuno, S., Igarashi, K., Kida, E., Mohd Sukri, S. F., Shintani, Y. & Kawarada, H., 2017 Jul 3, In : Applied Physics Letters. 111, 1, 013505.

Research output: Contribution to journalArticle

electrochemical oxidation
threshold voltage
field effect transistors
diamonds
electrolytes
1 Citation (Scopus)

Vertical edge graphite layer on recovered diamond (001) after high-dose ion implantation and high-temperature annealing

Inaba, M., Seki, A., Sato, K., Kushida, T., Kageura, T., Yamano, H., Hiraiwa, A. & Kawarada, H., 2017, (Accepted/In press) In : Physica Status Solidi (B) Basic Research.

Research output: Contribution to journalArticle

Diamond
Graphite
Ion implantation
ion implantation
Diamonds
2016
2 Citations (Scopus)

Contact Conductivity of Uncapped Carbon Nanotubes Formed by Silicon Carbide Decomposition

Inaba, M., Lee, C. Y., Suzuki, K., Shibuya, M., Myodo, M., Hirano, Y., Norimatsu, W., Kusunoki, M. & Kawarada, H., 2016 Mar 24, In : Journal of Physical Chemistry C. 120, 11, p. 6232-6238 7 p.

Research output: Contribution to journalArticle

Carbon Nanotubes
Silicon carbide
silicon carbides
Carbon nanotubes
carbon nanotubes
6 Citations (Scopus)

Effect of atomic layer deposition temperature on current conduction in Al2O3 films formed using H2O oxidant

Hiraiwa, A., Matsumura, D. & Kawarada, H., 2016 Aug 28, In : Journal of Applied Physics. 120, 8, 084504.

Research output: Contribution to journalArticle

atomic layer epitaxy
capacitors
conduction
leakage
temperature
14 Citations (Scopus)

High voltage breakdown (1.8 kV) of hydrogenated black diamond field effect transistor

Syamsul, M., Kitabayashi, Y., Matsumura, D., Saito, T., Shintani, Y. & Kawarada, H., 2016 Nov 14, In : Applied Physics Letters. 109, 20, 203504.

Research output: Contribution to journalArticle

electrical faults
high voltages
field effect transistors
diamonds
breakdown
9 Citations (Scopus)

Hydrogen-terminated diamond vertical-type metal oxide semiconductor field-effect transistors with a trench gate

Inaba, M., Muta, T., Kobayashi, M., Saito, T., Shibata, M., Matsumura, D., Kudo, T., Hiraiwa, A. & Kawarada, H., 2016 Jul 18, In : Applied Physics Letters. 109, 3, 033503.

Research output: Contribution to journalArticle

metal oxide semiconductors
field effect transistors
diamonds
hydrogen
modulation
8 Citations (Scopus)

Polycrystalline boron-doped diamond with an oxygen-terminated surface channel as an electrolyte-solution-gate field-effect transistor for pH sensing

Shintani, Y., Ibori, S., Igarashi, K., Naramura, T., Inaba, M. & Kawarada, H., 2016 Sep 10, In : Electrochimica Acta. 212, p. 10-15 6 p.

Research output: Contribution to journalArticle

Gates (transistor)
Diamond
Boron
Electrolytes
Diamonds
16 Citations (Scopus)

Radially oriented nanostrand electrodes to boost glucose sensing in mammalian blood

Akhtar, N., El-Safty, S. A., Abdelsalam, M. E., Shenashen, M. A. & Kawarada, H., 2016 Mar 15, In : Biosensors and Bioelectronics. 77, p. 656-665 10 p.

Research output: Contribution to journalArticle

Glucose
Electrodes
Blood
Foams
Catalytic Domain
8 Citations (Scopus)

Space-charge-controlled field emission model of current conduction through Al2O3 films

Hiraiwa, A., Matsumura, D. & Kawarada, H., 2016 Feb 14, In : Journal of Applied Physics. 119, 6, 064505.

Research output: Contribution to journalArticle

space charge
field emission
capacitors
conduction
MIS (semiconductors)
3 Citations (Scopus)

Spin-induced anomalous magnetoresistance at the (100) surface of hydrogen-terminated diamond

Takahide, Y., Sasama, Y., Tanaka, M., Takeya, H., Takano, Y., Kageura, T. & Kawarada, H., 2016 Oct 13, In : Physical Review B - Condensed Matter and Materials Physics. 94, 16, 161301.

Research output: Contribution to journalArticle

Diamond
Magnetoresistance
Hydrogen
Diamonds
diamonds
2015
10 Citations (Scopus)

Blocking characteristics of diamond junctions with a punch-through design

Hiraiwa, A. & Kawarada, H., 2015 Mar 28, In : Journal of Applied Physics. 117, 12, 124503.

Research output: Contribution to journalArticle

ionization coefficients
punches
diamonds
projection
electrical faults
1 Citation (Scopus)

Electron transport dependence of nanoscale hemeprotein molecular structures for engineering electrochemical nanosensor

Akhtar, N., El-Safty, S. A., Abdelsalam, M. E. & Kawarada, H., 2015 Aug 1, In : Nano-Structures and Nano-Objects. 2, p. 35-44 10 p.

Research output: Contribution to journalArticle

Nanosensors
Hemeproteins
Molecular structure
molecular structure
foams
2 Citations (Scopus)

Functionalized carbon microarrays platform for high sensitive detection of HIV-Tat peptide

Penmatsa, V., Rahim, R. A., Kawarada, H. & Wang, C., 2015 Jul 24, In : RSC Advances. 5, 80, p. 65042-65047 6 p.

Research output: Contribution to journalArticle

Microarrays
Peptides
Carbon
Fluorescence
Sensors
9 Citations (Scopus)

Isotope analysis of diamond-surface passivation effect of high-temperature H<inf>2</inf>O-grown atomic layer deposition-Al<inf>2</inf>O<inf>3</inf> films

Hiraiwa, A., Saito, T., Matsumura, D. & Kawarada, H., 2015 Jun 7, In : Journal of Applied Physics. 117, 21, 215304.

Research output: Contribution to journalArticle

atomic layer epitaxy
passivity
isotopes
diamonds
isotope effect
2 Citations (Scopus)

Large-current-controllable carbon nanotube field-effect transistor in electrolyte solution

Myodo, M., Inaba, M., Ohara, K., Kato, R., Kobayashi, M., Hirano, Y., Suzuki, K. & Kawarada, H., 2015 May 25, In : Applied Physics Letters. 106, 21, 213503.

Research output: Contribution to journalArticle

field effect transistors
carbon nanotubes
electrolytes
electrodes
transconductance
19 Citations (Scopus)

One-Pot Fabrication of Dendritic NiO@carbon-nitrogen Dot Electrodes for Screening Blood Glucose Level in Diabetes

Akhtar, N., El-Safty, S. A., Abdelsalam, M. E. & Kawarada, H., 2015 Oct 1, In : Advanced healthcare materials. 4, 14, p. 2110-2119 10 p.

Research output: Contribution to journalArticle

Medical problems
Glucose
Blood Glucose
Screening
Electrodes
2 Citations (Scopus)

Repulsive effects of hydrophobic diamond thin films on biomolecule detection

Ruslinda, A. R., Ishiyama, Y., Penmatsa, V., Ibori, S. & Kawarada, H., 2015 Feb 15, In : Applied Surface Science. 328, p. 314-318 5 p.

Research output: Contribution to journalArticle

Fluorine
Diamond films
Biomolecules
Thin films
X ray photoelectron spectroscopy

Room-temperature amorphous alloy field-effect transistor exhibiting particle and wave electronic transport

Fukuhara, M. & Kawarada, H., 2015 Feb 28, In : Journal of Applied Physics. 117, 8, 084302.

Research output: Contribution to journalArticle

field effect transistors
electric potential
room temperature
electronics
magnetic fields
24 Citations (Scopus)

Signature of high T c above 25 K in high quality superconducting diamond

Okazaki, H., Wakita, T., Muro, T., Nakamura, T., Muraoka, Y., Yokoya, T., Kurihara, S. I., Kawarada, H., Oguchi, T. & Takano, Y., 2015 Feb 2, In : Applied Physics Letters. 106, 5, 052601.

Research output: Contribution to journalArticle

diamonds
signatures
diamond films
electrical resistivity
mean free path
8 Citations (Scopus)

Very low Schottky barrier height at carbon nanotube and silicon carbide interface

Inaba, M., Suzuki, K., Shibuya, M., Lee, C. Y., Masuda, Y., Tomatsu, N., Norimatsu, W., Hiraiwa, A., Kusunoki, M. & Kawarada, H., 2015 Mar 23, In : Applied Physics Letters. 106, 12, 123501.

Research output: Contribution to journalArticle

silicon carbides
carbides
carbon nanotubes
electric contacts
electrical resistivity