Morris B Cohen

Assistant Professor
School of Electrical and Computer Engineering
Van Leer Building, Rm.W511
Atlanta, GA 30332
404.894.8415
Professor Cohen is interested in the natural electricity of the Earth, including lightning, the electrically charged upper atmosphere, and the radiation-filled space environment. He uses radio waves at low frequencies measured all around the world to understand them and develops resulting practical applications.
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Morris Cohen received his B.S. and Ph.D. degrees in Electrical Engineering from Stanford University in 2003 and 2010, respectively, and served as a research scientist there until August 2013. From September 2012 until August 2013, Dr. Cohen was appointed as AAAS Science and Technology Policy Fellow at the National Science Foundation. In Fall 2013, he joined the faculty in the School of ECE at Georgia Tech, with promotion and tenure as of Summer 2018. He was selected for the NSF CAREER Award in 2017 and received the ONR Young Investigator Award in 2015. He is the winner of the Santimay Basu Prize by the International Union of Radio Science, an award given once per three years to an early career scientist. He is an author of more than 60 journal publications and 150 conference presentations. He serves as an Associate Editor for Radio Science and as President-Elect of the Atmospheric and Space Electricity Section of the American Geophysical Union. He utilizes a flipped model for teaching, which increases student engagement and peer interaction, and won Georgia Tech's CTL/BP Junior Faculty Teaching Excellence Award in 2018. He enjoys hiking, cooking, traveling, and building brick pizza ovens.

RESEARCH INTERESTS:

Low frequency radio waves. Remote sensing of global lightning. Remote sensing of the Earth's ionosphere, plasmasphere and radiation belts. Space weather forecasting. Machine learning algorithms space weather nowcasting and forecasting. Novel antennas for low frequency generation using plasmas, and fast time variation. Power grid cybersecurity and trustable diagnostics. Imaging inside conductors using low frequency waves.

 The LF Radio Lab is interested in anything having to do with 500 Hz - 500 kHz radio waves, and we're constantly astonished by what that means. On the science side, LF waves are emitted from lightning and can be detected at global distances, allowing us to peer into the electrical activity within thunderclouds. LF waves reflect from the electrically charged upper atmosphere, providing insights into a region too high for balloons, yet too low for satellites, and allowing us to indirectly observe solar flares and eclipses, cosmic gamma-ray bursts, gravity waves, and more. LF waves reach into the space environment, interacting via wacky plasma processes with belts of energetic radiation that ordinarily degrade/destroy satellites, and endangers astronauts. The engineering applications of studying LF radio waves are numerous, including global and submarine communications, power grid security, satellite protection, GPS reliability, severe thunderstorm and tornado forecasting.  The world is our laboratory: We maintain field sites across the planet, building and deploying our LF radio receivers, analyzing the data in house, along with theoretical tools that take into account electromagnetic waves propagating in a plasma environment. We're also trying to make our sources of 500 Hz - 500 kHz waves that are flexible and portable, a difficult problem that has vexed engineers for over 100 years.