Parallel optical readout of cantilever arrays in dynamic mode

Parallel frequency readout of an array of cantilevers is demonstrated using optical beam deflection with a single laser-diode pair. Multi-frequency addressing makes the individual nanomechanical response of each cantilever distinguishable within the received signal. Addressing is accomplished by exc...

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Bibliographic Details
Published in:Nanotechnology 2010-10, Vol.21 (39), p.395503-395503
Main Authors: Koelmans, W W, van Honschoten, J, de Vries, J, Vettiger, P, Abelmann, L, Elwenspoek, M C
Format: Article
Language:English
Subjects:
Arrays
Beams (radiation)
Cantilever beams
Data storage
Deflection
Electromagnetic Fields
Interferometry
Lab-On-A-Chip Devices
Nanocomposites
Nanomaterials
Nanostructure
Nanotechnology - methods
Optics and Photonics - instrumentation
Optics and Photonics - methods
Resonant frequencies
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Summary:Parallel frequency readout of an array of cantilevers is demonstrated using optical beam deflection with a single laser-diode pair. Multi-frequency addressing makes the individual nanomechanical response of each cantilever distinguishable within the received signal. Addressing is accomplished by exciting the array with the sum of all cantilever resonant frequencies. This technique requires considerably less hardware compared to other parallel optical readout techniques. Readout is demonstrated in beam deflection mode and interference mode. Many cantilevers can be readout in parallel, limited by the oscillators' quality factor and available bandwidth. The proposed technique facilitates parallelism in applications at the nano-scale, including probe-based data storage and biological sensing.
ISSN:0957-4484
1361-6528
DOI:10.1088/0957-4484/21/39/395503