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Years Active: 2011-2020
Title: Howard Dennis Drew: Innovator in Terahertz Optoelectronics
Introduction
Howard Dennis Drew is a prominent inventor based in Hyattsville, MD (US). He has made significant contributions to the field of terahertz optoelectronics, holding a total of 3 patents. His work focuses on innovative approaches to graphene-enabled technologies, which have the potential to revolutionize various applications in photodetection and signal modulation.
Latest Patents
One of Drew's latest patents is titled "Hybrid metal-graphene terahertz optoelectronic system with tunable plasmonic resonance and method of fabrication." This invention presents a novel design that utilizes a hybrid graphene-metal structure, where graphene serves as a gate-tunable inductor and metal acts as a capacitive reservoir for charge accumulation. The device is capable of achieving large resonant absorption in graphene, with optimized configurations allowing for peak absorption rates approaching 100%. This technology is particularly suited for graphene-based terahertz detectors, enabling high mobility graphene to facilitate near-perfect tunable THz filters or modulators.
Another significant patent is the "Plasmon-enhanced terahertz graphene-based photodetector and method of fabrication." This invention enhances absorption efficiency by employing a tunable plasmonic resonance in sub-wavelength graphene micro-ribbons. These micro-ribbons are strategically oriented with respect to an array of bi-metallic electrode lines, allowing for efficient excitation of the plasmonic mode. The design enables enhanced radiation absorption through tunable geometric parameters and control of carrier density in graphene, achieved by adjusting the gate voltage applied to the photodetector.
Career Highlights
Throughout his career, Howard Dennis Drew has worked with notable institutions, including the University System of Maryland and the United States Navy. His research has significantly advanced the understanding and application of graphene in optoelectronic systems.
Collaborations
Drew has collaborated with esteemed colleagues such as Andrei B. Sushkov and Mohammad M. Jadidi, contributing to the advancement of terahertz technologies.
Conclusion
Howard Dennis Drew's innovative work in terahertz optoelectronics and his contributions to graphene technology highlight his role as a leading inventor in this field. His patents reflect a commitment to advancing scientific knowledge and practical applications in optoelectronic systems.