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Open AccessJournal ArticleDOI

Mechanical stiffening, bistability, and bit operations in a microcantilever

Warner J. Venstra, +2 more
- 11 Nov 2010 - 
- Vol. 97, Iss: 19, pp 193107
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TLDR
In this paper, the authors investigated the nonlinear dynamics of microcantilevers and showed that at strong driving, the cantilever amplitude is bistable and suggested several applications for the bistability of the canticle.
Abstract
We investigate the nonlinear dynamics of microcantilevers. We demonstrate mechanical stiffening of the frequency response at large amplitudes, originating from the geometric nonlinearity. At strong driving the cantilever amplitude is bistable. We map the bistable regime as a function of drive frequency and amplitude, and suggest several applications for the bistable microcantilever, of which a mechanical memory is demonstrated.

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Journal ArticleDOI

Stochastic switching of cantilever motion

TL;DR: Fluctuation-induced transitions between two stable states of a strongly driven microcantilever are reported, suggesting new detection schemes for cantilever-based instrumentation, where the detection of weak signals is mediated by the fluctuating environment.
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Self-Organized Synchronization of Phonon Lasers.

TL;DR: In this paper, the authors demonstrate the self-organized synchronization of phonon lasers in a two-membrane-in-the-middle optomechanical system, where the probe of each individual membrane enables them to monitor the real-time transient dynamics of synchronization, which reveals that the system enters into the synchronization regime via a torus birth bifurcation line.
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Tunable nanoelectromechanical resonator for logic computations.

TL;DR: A nanomechanical device capable of dynamically performing logic operations (NOR, NOT, XNOR, XOR, and AND) based on the active tuning of the resonance frequency of a doubly-clamped nanoelectromechanical beam resonator through electro-thermal actuation is presented.
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Strongly coupled modes in a weakly driven micromechanical resonator

TL;DR: In this article, the authors demonstrate a strong coupling between the flexural vibration modes of a clamped-clamped micromechanical resonator vibrating at low amplitudes, which enables direct measurement of the frequency response via amplitude-and phase modulation schemes using the fundamental mode as a mechanical detector.
Journal ArticleDOI

Detection of fatigue damage precursor using a nonlinear vibration approach

TL;DR: In this paper, a nonlinear dynamic analytical model was developed for detecting and estimating fatigue damage precursor in isotropic metal structures, prior to fatigue crack initiation, based on measurement of changes in the structure nonlinear response to harmonic base excitation.
References
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Journal ArticleDOI

Single spin detection by magnetic resonance force microscopy

TL;DR: The long relaxation time of the measured signal suggests that the state of an individual spin can be monitored for extended periods of time, even while subjected to a complex set of manipulations that are part of the MRFM measurement protocol.
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Single spin detection by magnetic resonance force microscopy

TL;DR: In this article, the authors reported the detection of an individual electron spin by magnetic resonance force microscopy (MRFM) and achieved a spatial resolution of 25nm in one dimension for an unpaired spin in silicon dioxide.
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Nonlinear Flexural-Flexural-Torsional Dynamics of Inextensional Beams. I. Equations of Motion

TL;DR: In this article, a set of mathematically consistent governing differential equations of motion describing the nonplanar, nonlinear dynamics of an inextensional beam is developed with the objective of retaining contributions due to nonlinear curvature as well as nonlinear inertia.
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Electrostatically Balanced Subnanometer Imaging of Biological Specimens by Atomic Force Microscope

TL;DR: In this paper, the atomic force microscope (AFM) tip and sample are adjusted by pH and electrolytes to distribute the force applied to the AFM tip over a large sample area.
Journal ArticleDOI

RF-driven Josephson bifurcation amplifier for quantum measurement.

TL;DR: Pulsed microwave reflection measurements on nanofabricated Al junctions show that actual devices attain the performance predicted by theory, and the absence of on-chip dissipation is shown.
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