Yoshihiro Ohtsu

Title: Innovations of Yoshihiro Ohtsu in Electron Microscopy

Introduction

Yoshihiro Ohtsu is a notable inventor based in Mito, Japan. He has made significant contributions to the field of electron microscopy, particularly with his innovative designs and methodologies. His work has advanced the capabilities of transmission electron microscopes, enhancing their performance and application in various scientific fields.

Latest Patents

Yoshihiro Ohtsu holds a patent for a transmission electron microscope and sample observation method. This invention includes an electron gun that irradiates a sample with an electron beam, and an electron detector that captures electrons that have passed through and scattered from the sample. The design features a first detection-side annular aperture and a second detection-side annular aperture, both of which limit the inner and outer diameters of the transmission region of scattered electrons. This innovation allows for the detection of electrons scattered at high angles without the limitations imposed by spherical aberration, thereby improving depth resolution.

Career Highlights

Ohtsu is associated with Hitachi High-Technologies Corporation, where he has been instrumental in developing advanced electron microscopy technologies. His work has not only contributed to the company's reputation as a leader in the field but has also paved the way for further research and development in electron microscopy.

Collaborations

Throughout his career, Yoshihiro Ohtsu has collaborated with esteemed colleagues such as Isao Nagaoki and Toshiaki Tanigaki. These collaborations have fostered a productive environment for innovation and have led to significant advancements in their shared field of expertise.

Conclusion

Yoshihiro Ohtsu's contributions to electron microscopy exemplify the impact of innovative thinking in scientific research. His patented technologies continue to influence the field, enhancing the capabilities of electron microscopes and enabling new discoveries.