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for Dynamics of Nanomechanical Cantilever Devices in Fluid with Applications to Atomic and Molecular Sensing

Dynamics of Nanomechanical Cantilever Devices in Fluid with Applications to Atomic and Molecular Sensing

John E. Sader
Department of Mathematics and Statistics
The University of Melbourne
Victoria 3010
Australia

Invention of the atomic force microscope has driven tremendous advances in the use and application of nanomechanical cantilever sensors. This has led to some key advances in nanoscience, which include the imaging of surfaces with atomic and molecular resolution, measurement of inertial mass at the atomic scale and monitoring of biological processes in liquid. Controlling the effects of surfaces and fluid dissipation presents significant challenges to achieving the ultimate sensitivity of these devices. Particularly, the fluid-structure interaction of resonating microcantilevers in fluid has been widely studied and is a cornerstone in nanomechanical sensor development. In this talk, I will give an overview of work in our group aimed at exploring the underlying physical processes in these systems. This will include exploration of energy dissipation in cantilever sensors with embedded microfluidic channels, gigahertz nanoparticle resonators in fluid and examination of the effects of surface stress on the resonance properties of cantilever sensors.


BIO:  John E Sader is a Professor in the Department of Mathematics and Statistics, University of Melbourne, Australia. He leads a theoretical group studying a range of topics including the dynamic response of nanoparticles under femtosecond laser excitation, mechanics of nanoelectromechanical devices, high Reynolds number flow of thin films and rarefied gas dynamics in nanoscale systems. http://www.ampc.ms.unimelb.edu.au/srg

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