Faculty Spotlight: Joel Greenberg
Dr. Joel Greenberg, an Assistant Research Professor in the Department of Electrical and Computer Engineering at Duke University, is one of the newest ALERT researchers. He is leading Project R1-C.3, “Characterizing, Modeling, and Mitigating Texturing in X-Ray Diffraction Tomography,” a newly funded research project that kicked off in January, 2017. His research lab is made up of one Ph.D. student, two master’s students, and two undergraduates.
Dr. Greenberg’s background is in multiple fields, as he received his bachelor’s degree in Mechanical and Aerospace Engineering along with a certificate in Physics at Princeton University in 2005. He then received his A.M. and Ph.D. in Physics, as well as a graduate certificate in Photonics, from Duke University in 2012. When asked how he became interested in homeland security related research, he states, “After my Ph.D., I was the technical and project manager for the DHS Science and Technology Coded Aperture X-ray Imaging (CAXI) program, which was tasked with studying how new advances in hardware and software, and algorithms could impact and improve the detection of contraband in luggage. Since that time, I have had the privilege of becoming even more involved in the world of security-related technology development, which contains a fascinating intersection of academia, government, and industry.”
Concerning major research questions in the field, Dr. Greenberg is very interested in addressing the limits of X-ray based explosives sensing. He is passionate about responding to real-world problems, and states that, “Because there is a cost and benefit to every measurement made, performing sensing in an optimal way requires an understanding of the underlying physics, available technologies, and algorithmic approaches. Getting the most useful information out of a set of measurements is key in the current data-deluged world of today.”
Dr. Greenberg is involved in numerous projects beyond his work with ALERT. His work with the Department of Homeland Security involves research testing next-generation X-ray diffraction tomography scanners and information theoretic analyses of X-ray-based detection systems. He is also working with radiologists and physicians at Duke University to develop devices based on X-ray diffraction that can aid in cancer detection research.
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