Mark A Wall

Title: Mark A Wall - Innovator in Extreme Ultraviolet Applications

Introduction

Mark A Wall is a prominent inventor based in Stockton, CA (US). He has made significant contributions to the field of extreme ultraviolet (EUV) lithography. His innovative work focuses on developing multilayer systems that enhance optical performance in lithographic applications.

Latest Patents

Mark A Wall holds a patent for "MoRu/Be multilayers for extreme ultraviolet applications." This patent describes high reflectance, low intrinsic roughness, and low stress multilayer systems that comprise amorphous layers of MoRu and crystalline Be layers. The multilayers have demonstrated reflectance greater than 70% with 50 bilayer pairs. Additionally, the optical throughput of these multilayers can be 30-40% higher than that of traditional Mo/Be multilayer coatings. The performance can be further improved by using a diffusion barrier to create sharper interfaces. A capping layer on the top surface enhances long-term reflectance and EUV radiation stability by forming a thin native oxide that is water resistant.

Career Highlights

Mark A Wall is affiliated with the University of California, where he continues to advance research in the field of EUV lithography. His work has garnered attention for its potential applications in various high-tech industries.

Collaborations

Mark has collaborated with Sasa C Bajt, contributing to the development of innovative technologies in multilayer systems.

Conclusion

Mark A Wall's contributions to extreme ultraviolet applications through his patented technologies highlight his role as a key innovator in the field. His work not only enhances optical performance but also paves the way for advancements in lithographic techniques.