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DIELECTRIC TRANSDUCTION OF NANOMECHANICAL SYSTEMS

Any polarizable object exposed to an inhomogeneous field will experience a force. We employ this simple concept as an innovative and highly efficient scheme to transduce nanomechanical resonators by a dielectric gradient force generated by electrodes located beneath the resonator. Not only is the described method local and integrable, it is also scalable to large bandwith and does not require any beam metallization which might introduce extra dissipation. (Click here to read more)

See Unterreithmeier et al., Nature 458, 1001 (2009).
and press release (in German) or (in English) for details.

ELECTROMECHANICAL CHARGE SHUTTLE

A gold island is hosted in the center of a doubly-clamped high stress silicon nitride beam that is actuated accoustically to oscillate between an adjacent source and drain electrode. In this project, we investigate the nanomechanical transport of N electrons that are shuttled with the resonance frequency f of the moving island, giving rise to a current of I = 2Nef.
(Click here to read more)

See König et al., Nature Nanotechnology, doi:10.1038/nnano.2008.178
and press release (in German) or article on nanotechweb.org (in English) for details.

CAVITY NANO-OPTOMECHANICS

Schematic representation of an experiment combining a fiber-based high finesse Fabry-Perot cavity with a nanomechanical resonator to study cavity nano-optomechanics. In a first experiment a carbon nanorod grown by electron beam deposition is employed as resonator.

See Favero et al., Optics Express, doi:10.1364/OE.17.012813
and Favero et al., New Journal of Physics, doi:10.1088/1367-2630/10/9/095006 for details.

PILLAR MECHANICS

SEM image of a vibrating nanopillar in an array of pillars etched from a GaAs wafer.

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