Kenji Sakai

Small Eddy Current Testing Sensor Probe Using a Tunneling Magnetoresistance Sensor to Detect Cracks in Steel Structures

Keiji Tsukada, Minoru Hayashi, Yoshihiro Nakamura et al. · IEEE Transactions on Magnetics · 2018 · 92 citations

Tunneling Magnetoresistance Sensor, Optical Eddy Current, Engineering +11

λ/4-shifted InGaAsP/InP DFB lasers by simultaneous holographic exposure of positive and negative photoresists

Katsuyuki Utaka, S. Akiba, Kenji Sakai et al. · Electronics Letters · 1984 · 87 citations

Photonics, Negative Photoresists, Engineering +9

Four-wave mixing and direct terahertz emission with two-color semiconductor lasers

Stefan Hoffmann, Martin R. Hofmann, Erik Bründermann et al. · Applied Physics Letters · 2004 · 81 citations

Photonics, Thz Photonics, Direct Terahertz Emission +14

Oxygen nonstoichiometry and cobalt valence in misfit-layered cobalt oxides

Yasushi Morita, Jens-Christian N. Poulsen, Kenji Sakai et al. · Journal of Solid State Chemistry · 2004 · 64 citations

Oxygen Reduction Reaction, Inorganic Chemistry, Oxygen Nonstoichiometry +3

Analysis of quarter-wave-shifted DFB laser

Katsuyuki Utaka, S. Akiba, Kenji Sakai et al. · Electronics Letters · 1984 · 63 citations

Short Wavelength Optic, Optical Materials, Engineering +16