Seth D. Cohen, Entered 2007/08
Office Location: Physics
Email Address: sethdanielcohen@gmail.com
Specialties:
Nonlinear dynamics and complex systems
Education:
BS, University of Rochester, 2007
Research Categories: Nonlinear Circuits
Research Description: When I attended Duke (2007-2013), I studied time-delayed feedback in oscillators in order to realize inexpensive and robust sensor systems. One of my more interesting projects was to design an inexpensive radar source using principles of chaos. For my thesis project, I designed a new method for detecting the position of small objects (~ 2 cm) using large radio waves (~ 1 m), and in my final summer, I showed that the physics of this work could be transferred to lasers for detecting nanometer movements.
Representative Publications (More Publications)
- Seth D. Cohen, Hugo L. D. de S. Cavalcante, and Daniel J. Gauthier, Subwavelength Position Sensing Using Nonlinear Feedback, Physical Review Letters, vol. 107 no. 25 (2011) [PhysRevLett.107.254103], [doi] [abs].
- S.D. Cohen, D. J. Gauthier, A pseudo-matched filter for chaos, Chaos: An Interdisciplinary Journal of Nonlinear Science, vol. 22 no. 033148 (2012) [p033148_s1], [doi] [abs].
- S.D. Cohen, D. Rontani, D. J. Gauthier, Ultra-high-frequency piecewise-linear chaos using delayed feedback loops, Chaos: An Interdisciplinary Journal of Nonlinear Science, vol. 22 no. 043112 (2012) [p043112_s1], [doi] [abs].
- G. M. Hall, E. J. Holder, S. D. Cohen, D. J. Gauthier, Low-cost chaotic radar design, Proc. SPIE 8361, Radar Sensor Technology XVI, 836112 (2012) [proceeding.aspx], [doi] [abs].