Osamu Niwa

Overview

Best Publications

• Characterization of platinum nanoparticle-embedded carbon film electrode and its detection of hydrogen peroxide.

  Tianyan You;Osamu Niwa;Masato Tomita;Shigeru Hirono

  378
  Citations

• Electrochemical behavior of reversible redox species at interdigitated array electrodes with different geometries: consideration of redox cycling and collection efficiency

  Osamu. Niwa;Masao. Morita;Hisao. Tabei

  377
  Citations

• Small-volume voltammetric detection of 4-aminophenol with interdigitated array electrodes and its application to electrochemical enzyme immunoassay

  Osamu Niwa;Osamu Niwa;Yan Xu;Yan Xu;H. Brian Halsall;William R. Heineman

  365
  Citations

• Quantitative analysis of reversible diffusion-controlled currents of redox soluble species at interdigitated array electrodes under steady-state conditions

  Koichi Aoki;Masao Morita;Osamu Niwa;Hisao Tabei

  335
  Citations

• An amperometric detector formed of highly dispersed Ni nanoparticles embedded in a graphite-like carbon film electrode for sugar determination.

  Tianyan You;Osamu Niwa;Zilin Chen;Katsuyoshi Hayashi

  251
  Citations

• Electrochemical performance of angstrom level flat sputtered carbon film consisting of sp2 and sp3 mixed bonds.

  Osamu Niwa;Jianbo Jia;Yukari Sato;Dai Kato

  209
  Citations

• On-chip enzyme immunoassay of a cardiac marker using a microfluidic device combined with a portable surface plasmon resonance system.

  Ryoji Kurita;Yoshimi Yokota;Yukari Sato;and Fumio Mizutani

  206
  Citations

• A nanocarbon film electrode as a platform for exploring DNA methylation

  Dai Kato;Naoyuki Sekioka;Naoyuki Sekioka;Akio Ueda;Akio Ueda;Ryoji Kurita

  188
  Citations

• Electrochemical polymerization of pyrrole on polymer-coated electrodes

  Osamu Niwa;Toshiaki Tamamura

  175
  Citations

• Concentration of Extracellular l-Glutamate Released from Cultured Nerve Cells Measured with a Small-Volume Online Sensor

  Osamu Niwa;Keiichi Torimitsu;Masao Morita;Peter Osborne

  158
  Citations

• Detection of electrochemical enzymatic reactions by surface plasmon resonance measurement.

  Yuzuru Iwasaki;Tsutomu Horiuchi;Osamu Niwa

  147
  Citations

• Interdigitated array microelectrodes as electrochemical sensors

  Masao Morita;Osamu Niwa;Tsutomu Horiuchi

  132
  Citations

• Structure and Electrochemical Properties of Carbon Films Prepared by a Electron Cyclotron Resonance Sputtering Method

  Jianbo Jia;Dai Kato;Ryoji Kurita;Yukari Sato

  126
  Citations

• Fiber-optic conical microsensors for surface plasmon resonance using chemically etched single-mode fiber

  Kazuyoshi Kurihara;Hiroyuki Ohkawa;Yuzuru Iwasaki;Osamu Niwa

  123
  Citations

• Electrochemical detection method and apparatus therefor.

  Tsutomu Horiuchi;Osamu Niwa;Hisao Tabei;Masao Morita

  122
  Citations

• Characterization and electrochemical properties of highly dispersed copper oxide/hydroxide nanoparticles in graphite-like carbon films prepared by RF sputtering method

  Tianyan You;Osamu Niwa;Masato Tomita;Hiroshi Ando

  118
  Citations

• Fabrication and characteristics of vertically separated interdigitated array electrodes

  Osamu Niwa;Masao Morita;Hisao Tabei

  117
  Citations

• Voltammetric measurements of reversible and quasi-reversible redox species using carbon film based interdigitated array microelectrodes

  Osamu. Niwa;Hisao. Tabei

  116
  Citations

• Electroanalysis with interdigitated array microelectrodes

  Osamu Niwa

  114
  Citations

• Accurate and reproducible detection of proteins in water using an extended-gate type organic transistor biosensor

  Tsukuru Minamiki;Tsuyoshi Minami;Ryoji Kurita;Osamu Niwa

  112
  Citations

• A surface plasmon resonance immunosensor for detecting a dioxin precursor using a gold binding polypeptide

  Nobuaki Soh;Tomoyuki Tokuda;Tomomi Watanabe;Keiko Mishima

  108
  Citations