Office Location: 171 Physics
Office Phone: 919-660-2506
Email Address: hc71@phy.duke.edu
Specialties:
Nonlinear dynamics and complex systems
Atomic, molecular, and optical physics
Biological physics
Research Categories: Nonlinear Dynamics, Chaos, Complex Systems
Current projects: MURI - Exploiting Nonlinear Dynamics for Novel Devices
Research Description: We are studying networks of radio-frequency elements consisting nonlinear units with delayed feedback. Those elements can be modeled using time delay differential equations or Boolean Delay Equations. The devices are low-cost and generate oscillations in the very-high to ultra-high frequency bands (0.1 - 2 GHz). The oscillations can be tuned to be periodic, quasi-periodic or chaotic, and can cover a ultra-wide band of frequency. A radio signal generated with these devices has low-profile, low-probability of interception and has potential applications in the development of sensors, like through-wall imaging, chaotic radar, intrusion detection, etc. The study of complex networks is also relevant for systems biology, for instance in neural networks, or gene regulatory networks
Areas of Interest:
Nonlinear Dynamics and Chaos
Complex Systems
Ultra-Fast Electronics
Optics and Atomic Physics
Recent Publications (search)
Highlight:
With a background in Nonlinear Dynamics and Chaos, we are working on ultra-fast electronic circuits with high-dimensional chaos. The goal is to apply properties of chaos and nonlinear dynamics to improve operating characteristic over traditional applications. Spin-offs include a better understanding of Radio-Frequency electronics, complex networks, etc.