The fluid-structure interaction of micro and nanoscale cantilever sensors
Seminar with John E Sader ARC Centre of Excellence in Exciton Science School of Mathematics and Statistics University of Melbourne.
Sensitivity of a mechanical device to environmental changes can be enhanced through miniaturization. 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 fluid dissipation presents a significant challenge 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 seminar, I will provide an overview of these developments with a particular focus on the physics of this fluid-structure interaction.
John Sader is a Professor in the School of Mathematics and Statistics at the University of Melbourne and a Chief Investigator in the ARC Centre of Excellence in Exciton Science. He leads a theory group that explores a range of areas, including the dynamic response of nanoparticles under femtosecond laser excitation, fluid and solid mechanics of nanoelectromechanical devices, plasmonics, high and low Reynolds number flows and rarefied gas dynamics generated in nanoscale systems. He has developed experimental techniques for the atomic force microscope (AFM), which are implemented in commercial AFMs.