Optimal control of force microscope cantilevers. II. Magnetic coupling implementation

Optimal control of force microscope cantilevers. II. Magnetic coupling implementation

We describe the implementation of optimal controllers for damping the motion of cantilevers used in magnetic resonance force microscopy. We demonstrate that optimal control is achievable and that torsional magnetic coupling provides an effective actuation method. Cantilever Brownian vibrational ampl...

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Veröffentlicht in:Journal of applied physics 1996-08, Vol.80 (4), p.1959-1964
Hauptverfasser: Bruland, K. J., Garbini, J. L., Dougherty, W. M., Sidles, J. A.
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container_end_page 1964
container_issue 4
container_start_page 1959
container_title Journal of applied physics
container_volume 80
creator Bruland, K. J.
Garbini, J. L.
Dougherty, W. M.
Sidles, J. A.
description We describe the implementation of optimal controllers for damping the motion of cantilevers used in magnetic resonance force microscopy. We demonstrate that optimal control is achievable and that torsional magnetic coupling provides an effective actuation method. Cantilever Brownian vibrational amplitude was reduced from 2 to 0.16 Å and resonant quality was reduced from 2000 to 5. Applied control fields were sufficiently small that they would not affect magnetic resonance phenomena.
doi_str_mv 10.1063/1.363086
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title Optimal control of force microscope cantilevers. II. Magnetic coupling implementation
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