Kok-Keong Lew

Title: Innovations of Kok-Keong Lew

Introduction

Kok-Keong Lew is a notable inventor based in Hillsboro, OR (US). He has made significant contributions to the field of materials science, particularly in the area of silicon carbide growth. With a total of two patents to his name, Lew's work has implications for various technological advancements.

Latest Patents

One of Kok-Keong Lew's latest patents is a method of producing epitaxial layers with low basal plane dislocation concentrations. This method involves flowing a silicon source gas, a carbon source gas, and a carrier gas into a growth chamber under specific growth conditions to epitaxially grow silicon carbide on a wafer. The process includes stopping or reducing the flow of the silicon source gas to interrupt the growth, while maintaining the flow of the carrier gas and elevated temperature in the growth chamber. After a period, the flow of the silicon source gas is resumed to reinitiate the silicon carbide growth, with the wafer remaining in the growth chamber throughout the method.

Another patent focuses on a method of supplying sources of carbon and silicon into a chemical vapor deposition chamber. This method includes collecting exhaust gases from the chamber, performing mass spectrometry on these gases, and correlating the partial pressure of a carbon species in the exhaust gases to a carbon:silicon ratio in the chamber. These innovations demonstrate Lew's expertise in optimizing processes for material growth.

Career Highlights

Kok-Keong Lew is currently employed at the United States Navy, where he contributes his knowledge and skills to various projects. His work is instrumental in advancing the Navy's technological capabilities, particularly in materials engineering.

Collaborations

Throughout his career, Lew has collaborated with talented individuals such as Brenda L VanMil and Rachael L Myers-Ward. These collaborations have likely enriched his research and development efforts, leading to innovative solutions in his field.

Conclusion

Kok-Keong Lew's contributions to the field of materials science, particularly through his patents, highlight his role as an influential inventor. His work continues to pave the way for advancements in silicon carbide technology and beyond.