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Signal amplification by sensitive control of bifurcation topology
R B Karabalin1, Ron Lifshitz, M C Cross
1Kavli Nanoscience Institute and Condensed Matter Physics, California Institute of Technology, Pasadena, 91125, USA.
Abstract:
We describe a novel amplification scheme based on inducing dynamical changes to the topology of a bifurcation diagram of a simple nonlinear dynamical system. We have implemented a first bifurcation-topology amplifier using a coupled pair of parametrically driven high-frequency nanoelectromechanical systems resonators, demonstrating robust small-signal amplification. The principles that underlie bifurcation-topology amplification are simple and generic, suggesting its applicability to a wide variety of physical, chemical, and biological systems.
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