Osamu Niwa
Osamu Niwa
Saitama Institute of Technology
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Electrochemical behavior of reversible redox species at interdigitated array electrodes with different geometries: consideration of redox cycling and collection efficiency
O Niwa, M Morita, H Tabei
Analytical Chemistry 62 (5), 447-452, 1990
Small-volume voltammetric detection of 4-aminophenol with interdigitated array electrodes and its application to electrochemical enzyme immunoassay
O Niwa, Y Xu, HB Halsall, WR Heineman
Analytical chemistry 65 (11), 1559-1563, 1993
Characterization of platinum nanoparticle-embedded carbon film electrode and its detection of hydrogen peroxide
T You, O Niwa, M Tomita, S Hirono
Analytical chemistry 75 (9), 2080-2085, 2003
Quantitative analysis of reversible diffusion-controlled currents of redox soluble species at interdigitated array electrodes under steady-state conditions
K Aoki, M Morita, O Niwa, H Tabei
Journal of electroanalytical chemistry and interfacial electrochemistry 256 …, 1988
An amperometric detector formed of highly dispersed Ni nanoparticles embedded in a graphite-like carbon film electrode for sugar determination
T You, O Niwa, Z Chen, K Hayashi, M Tomita, S Hirono
Analytical chemistry 75 (19), 5191-5196, 2003
On-chip enzyme immunoassay of a cardiac marker using a microfluidic device combined with a portable surface plasmon resonance system
R Kurita, Y Yokota, Y Sato, F Mizutani, O Niwa
Analytical chemistry 78 (15), 5525-5531, 2006
Electrochemical Performance of Angstrom Level Flat Sputtered Carbon Film Consisting of sp2 and sp3 Mixed Bonds
O Niwa, J Jia, Y Sato, D Kato, R Kurita, K Maruyama, K Suzuki, S Hirono
Journal of the American Chemical Society 128 (22), 7144-7145, 2006
A nanocarbon film electrode as a platform for exploring DNA methylation
D Kato, N Sekioka, A Ueda, R Kurita, S Hirono, K Suzuki, O Niwa
Journal of the American Chemical Society 130 (12), 3716-3717, 2008
Concentration of Extracellular l-Glutamate Released from Cultured Nerve Cells Measured with a Small-Volume Online Sensor
O Niwa, K Torimitsu, M Morita, P Osborne, K Yamamoto
Analytical Chemistry 68 (11), 1865-1870, 1996
Electrochemical polymerization of pyrrole on polymer-coated electrodes
O Niwa, T Tamamura
Journal of the Chemical Society, Chemical Communications, 817-818, 1984
Detection of electrochemical enzymatic reactions by surface plasmon resonance measurement
Y Iwasaki, T Horiuchi, O Niwa
Analytical chemistry 73 (7), 1595-1598, 2001
Interdigitated array microelectrodes as electrochemical sensors
M Morita, O Niwa, T Horiuchi
Electrochimica acta 42 (20-22), 3177-3183, 1997
Electrochemical detection method and apparatus therefor
T Horiuchi, O Niwa, H Tabei, M Morita
US Patent 5,389,215, 1995
Fiber-optic conical microsensors for surface plasmon resonance using chemically etched single-mode fiber
K Kurihara, H Ohkawa, Y Iwasaki, O Niwa, T Tobita, K Suzuki
Analytica Chimica Acta 523 (2), 165-170, 2004
Characterization and electrochemical properties of highly dispersed copper oxide/hydroxide nanoparticles in graphite-like carbon films prepared by RF sputtering method
T You, O Niwa, M Tomita, H Ando, M Suzuki, S Hirono
Electrochemistry communications 4 (5), 468-471, 2002
Structure and electrochemical properties of carbon films prepared by a electron cyclotron resonance sputtering method
J Jia, D Kato, R Kurita, Y Sato, K Maruyama, K Suzuki, S Hirono, T Ando, ...
Analytical chemistry 79 (1), 98-105, 2007
Fabrication and characteristics of vertically separated interdigitated array electrodes
O Niwa, M Morita, H Tabei
Journal of electroanalytical chemistry and interfacial electrochemistry 267 …, 1989
Voltammetric measurements of reversible and quasi-reversible redox species using carbon film based interdigitated array microelectrodes
O Niwa, H Tabei
Analytical Chemistry 66 (2), 285-289, 1994
A surface plasmon resonance immunosensor for detecting a dioxin precursor using a gold binding polypeptide
N Soh, T Tokuda, T Watanabe, K Mishima, T Imato, T Masadome, ...
Talanta 60 (4), 733-745, 2003
Microfluidic device integrated with pre-reactor and dual enzyme-modified microelectrodes for monitoring in vivo glucose and lactate
R Kurita, K Hayashi, X Fan, K Yamamoto, T Kato, O Niwa
Sensors and Actuators B: Chemical 87 (2), 296-303, 2002
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