Journal ArticleDOI
Nanomechanical gas sensing with nonlinear resonant cantilevers.
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TLDR
In the nonlinearly driven cantilever, the adsorption and desorption-induced frequency shifts were enhanced by over a factor of three compared to resonant sensing with the same mode in the linear regime, demonstrating a route towards gas detectors that exploit nonlinearity to enhance the responsivity.Abstract:
Cantilevers play an important role as linear transducers in nanoscience, with nanomechanical detection of mass and stress as a clear example. We performed gas sensing experiments with a standard functionalized cantilever driven strongly into the regime of nonlinear oscillations. We compared the cantilever response to the selective adsorption of ethanol vapour in the nonlinear regime, to the ones obtained in the conventional linear static and dynamic sensing modes. In the nonlinearly driven cantilever, the adsorption and desorption-induced frequency shifts were enhanced by over a factor of three compared to resonant sensing with the same mode in the linear regime. This demonstrates a route towards gas detectors that exploit nonlinearity to enhance the responsivity, which can be implemented with standard cantilever devices.read more
Citations
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Air Quality Effects on Human Health and Approaches for Its Assessment through Microfluidic Chips
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Polymeric 3D Printed Functional Microcantilevers for Biosensing Applications.
Stefano Stassi,Erika Fantino,Roberta Calmo,Annalisa Chiappone,Matteo Gillono,Matteo Gillono,Davide Scaiola,Candido Pirri,Candido Pirri,Carlo Ricciardi,Alessandro Chiadò,Ignazio Roppolo +11 more
TL;DR: 3D microfabrication techniques, material characterization, and biosensor development could be combined to obtain an engineered polymeric microcantilever with intrinsic functionalities, paving the way to a new class of mass-sensing microelectromechanical system devices with intrinsic properties.
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A Nonlinear Rate Microsensor utilising Internal Resonance.
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Locking of electrostatically coupled thermo-optically driven MEMS limit cycle oscillators
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