Keiji Enpuku

TL;DR: In this paper, an ac susceptibility measurement method was used to detect magnetic nanoparticles using an excitation field applied to the particles, and the resulting signal field from the particles was detected with a pickup coil.

TL;DR: In this article, a high-temperature superconducting (HTS) coil was used to measure the thickness of an iron plate and the effect of the liftoff between the plate and HTS coil on the changes in the inductance L and the resistance R of the coil was studied.

TL;DR: The present study demonstrates the ability of magnetic markers for measuring biological targets without BF separation and has great potential for use as the next generation's analytical system.

TL;DR: In this paper, the authors investigated the AC susceptibility of magnetic fluids in the nonlinear Brownian relaxation region and compared the experimental results with numerical simulations based on the Fokker-Planck equation.

TL;DR: In this paper, the authors report selected recent topics in high-Tc superconductive electronics, including improved process technology for high-tc digital electronics, the development of a sampling oscilloscope, magnetic immunoassay using a high-to-C superconducting quantum interference device (SQUID), scanning laser-SQI device for integrated circuits testing, terahertz radiation from high-TC superconductors, and optical control of vortices are reviewed.