Toru Yahagi

Title: The Innovative Contributions of Toru Yahagi

Introduction

Toru Yahagi is a notable inventor based in Yamagata, Japan. He has made significant contributions to the field of electrostatic sensing and biosensor technology. With a total of 6 patents to his name, Yahagi's work reflects a commitment to advancing technological solutions in various applications.

Latest Patents

One of Yahagi's latest inventions is an electrostatic sensing device. This device includes a sensor oxide semiconductor TFT and a controller designed to manage the sensor's operations. The sensor features an oxide semiconductor active layer, a source electrode, a drain electrode, a gate electrode, and a gate insulating layer. The controller measures the difference from a reference current flowing between the source and drain electrodes while applying a driving voltage to the gate electrode. This allows for the determination of the polarity of electrostatic charge based on the direction of the current difference.

Another significant invention is a biosensor and detection device. This TFT biosensor consists of a gate electrode made from a silicon substrate, a reference electrode, and an enzyme fixed to an insulating substrate. The enzyme reacts with a sensing object material, inducing a pH variation near an ion-sensitive insulating film. The biosensor can detect the concentration of the sensing object material with high sensitivity by measuring the pH variation as a threshold voltage shift in the gate-source voltage to source-drain current characteristics.

Career Highlights

Yahagi has worked with several companies throughout his career, including NLT Technologies, Ltd. and Tianma Japan, Ltd. His experience in these organizations has contributed to his expertise in developing innovative technologies.

Collaborations

Some of his notable coworkers include Kazushige Takechi and Shinnosuke Iwamatsu. Their collaboration has likely fostered an environment of creativity and innovation in their respective projects.

Conclusion

Toru Yahagi's contributions to the fields of electrostatic sensing and biosensor technology highlight his innovative spirit and dedication to advancing technology. His patents reflect a deep understanding of complex systems and a commitment to improving detection methods.