Nanoscale systems are the subject of forefront interdisciplinary research. The underlying physics renders dynamics of nanosystems nonlinear. Despite extensive research on chaotic dynamics in low-dimensional dynamical systems, little has been done for nanoscale systems. Due to the potentially widespread use of nanoscale systems in science, engineering, and technological applications, it is imperative to investigate and exploit nonlinear dynamics in such systems. The proposed STIR research aims to address this fundamental topic by investigating a prototypical class of nanoelectromechanical systems (NEMS): electrostatically driven Si-nanowires. Our preliminary study has revealed the phenomenon of multistability and extensive chaos. The working hypothesis is that these phenomena are due to very high-dimensional transient chaos. The goals of the proposed research are then to investigate the dynamical origin of multistability and extensive chaos in infinitely dimensional dynamical systems using the driven nanowire system as a paradigm, and to explore the effect of random fluctuations.
|Effective start/end date||8/1/12 → 4/30/13|
- DOD-ARMY-ARL: Army Research Office (ARO): $50,000.00