Yasuyuki Ohta

Title: Yasuyuki Ohta: Innovator in Single Crystal Manufacturing

Introduction

Yasuyuki Ohta is a prominent inventor based in Omura, Japan. He has made significant contributions to the field of materials science, particularly in the manufacturing of single crystals. His innovative approach has led to advancements that enhance the quality and efficiency of crystal production.

Latest Patents

Yasuyuki Ohta holds a patent for a method of manufacturing single crystals. This method involves using a pulling-up apparatus to control the oxygen concentration of the monocrystal at a predetermined position in the pulling-up direction. The process is based on the relationship that the oxygen concentration of the monocrystal decreases as the flow rate of the inactive gas above the free surface of the dopant-added melt increases. The gas flow volume in the chamber is maintained between 40 L/min and 400 L/min, with an inner pressure ranging from 5332 Pa to 79980 Pa. This innovative method allows for the elevation of oxygen concentration to produce monocrystals with desirable properties, minimizing the difference between the desired and actual oxygen concentration profiles.

Career Highlights

Yasuyuki Ohta is associated with Sumco Techxiv Corporation, where he applies his expertise in crystal manufacturing. His work has been instrumental in advancing the company's capabilities in producing high-quality single crystals for various applications.

Collaborations

Yasuyuki Ohta has collaborated with notable colleagues, including Yasuhito Narushima and Shinichi Kawazoe. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.

Conclusion

Yasuyuki Ohta's contributions to the field of single crystal manufacturing exemplify the impact of innovative thinking in materials science. His patented method not only enhances the quality of monocrystals but also sets a standard for future advancements in the industry.