Beronika Levtchin

Title: Beronika Levtchin and Wet Atomic Layer Etching of Silicon Dioxide.

Introduction

Beronika Levtchin is an inventor associated with Chaska, Minnesota, and Tokyo Electron Limited. His patent work concerns methods for etching silicon dioxide through a cyclic wet atomic layer etching process.

Latest Patents

Levtchin is credited with 1 patent: “Methods for Wet Atomic Layer Etching of Silicon Dioxide.” The disclosure describes wet atomic layer etching methods that use new chemistries to process silicon dioxide layers. An anhydrous basic surface-modification solution creates self-limiting reactions on exposed surfaces and forms a silicate passivation layer. That layer is insoluble in the modification solution but readily dissolves in a separate dissolution solution.

Career Highlights

The patent reflects Levtchin’s contribution to semiconductor processing technology at Tokyo Electron Limited. Its approach uses surface modification and dissolution in a cyclic process to etch silicon dioxide.

Collaborations

Kate Abel is identified as Levtchin’s coworker. The available information does not specify her role in the patent or the work described in it.

Conclusion

Beronika Levtchin’s patent documents a wet atomic layer etching approach designed to selectively process silicon dioxide using a passivation layer and a separate dissolution step.