James R Waldrop

Title: The Innovative Contributions of James R. Waldrop

Introduction

James R. Waldrop, an accomplished inventor based in Thousand Oaks, California, has made significant contributions to the field of infrared technology and semiconductor materials. With a total of four patents to his name, Waldrop's inventions reflect a deep understanding of the complexities involved in sensor design and material engineering.

Latest Patents

Waldrop's latest patents demonstrate his innovative approach to overcoming technological challenges. One of his notable inventions is the microbolometer infrared (IR) focal plane array (FPA) with an in-situ vacuum sensor and method of fabrication. This unique microbolometer IR FPA utilizes the pixel element itself as a vacuum sensor, incorporating an electrical signal applied to the resistive element to heat the bolometer material. This heating creates a variable resistance that correlates with the vacuum level. In a favorable vacuum environment, heat retention leads to a significant temperature increase and substantial resistance variability, while in a poor vacuum, heat dissipation diminishes the temperature rise and resistance variability. This patented technology allows for the effective measurement of vacuum levels.

Another patent by Waldrop addresses the Schottky barrier height for metal contacts to III-V semiconductors. This invention provides a metal-to-semiconductor contact design where the Schottky barrier height is approximately 1 eV and remains independent of the contact metal. The invention involves depositing metals such as gold, chromium, or titanium onto a heavily doped p-type silicon layer. An interface layer is then applied on gallium arsenide, enhancing the function and efficiency of semiconductor devices.

Career Highlights

Throughout his career, Waldrop has collaborated with significant organizations in the aerospace and technology industries. Notably, he has worked with the United States of America as represented by the Secretary of the Air Force, contributing valuable insights and innovations that have advanced military and aerospace capabilities. Additionally, Waldrop has been associated with Teledyne Licensing, LLC, where he further honed his expertise in technology development.

Collaborations

James R. Waldrop has collaborated with notable figures in the field, including Ronald W. Grant and Roger E. DeWames. These collaborations have fostered significant advancements and have facilitated the successful development and commercialization of innovative technologies.

Conclusion

James R. Waldrop stands out as a pioneering inventor in the fields of infrared technology and semiconductor materials. His contributions, characterized by groundbreaking patents and a commitment to innovation, continue to impact the industry. As technology evolves, Waldrop’s inventions will undoubtedly serve as a foundation for future advancements. His work exemplifies the spirit of innovation and the potential of engineering to solve complex problems.