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Thermal nonlinearities in a nanomechanical oscillator

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TLDR
In this article, a room-temperature motion sensor with record sensitivity was created using a levitating silica nanoparticle and feedback cooling to reduce the noise arising from Brownian motion enables a detector that is perhaps even sensitive enough to detect non-Newtonian gravity-like forces.
Abstract
A room-temperature motion sensor with record sensitivity is created using a levitating silica nanoparticle. Feedback cooling to reduce the noise arising from Brownian motion enables a detector that is perhaps even sensitive enough to detect non-Newtonian gravity-like forces.

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A nanostructured surface increases friction exponentially at the solid-gas interface.

TL;DR: It is observed that when an oscillating surface is modified with nanostructures, the experimentally measured dissipation shows an exponential dependence on kinematic viscosity, attributing the observed exponential enhancement to the stochastic nature of interactions of many coupled nanostructure with the gas media.
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Estimation of squeezing in a nonlinear quadrature of a mechanical oscillator

TL;DR: In this article, the authors provide a scheme for reconstructing the nonlinear squeezing in standard linear quantum optomechanics, analysing the effects of mechanical decoherence processes on the reconstruction and show that all mechanical states which exhibit reduced noise in this nonlinear quadrature are nonclassical.
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Methods for Atomistic Simulations of Linear and Nonlinear Damping in Nanomechanical Resonators

TL;DR: In this paper, a comparative study of five different methods for estimating damping under isothermal conditions is presented, and the authors discuss the factors that must be considered while selecting simulation parameters, establish criteria for convergence and linearity, and highlight the relative merits and limitations.
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Third-order nonlinear optical responses of CuO nanosheets for ultrafast pulse generation

TL;DR: In this article , a stable all-solid-state mode-locked laser with the as-prepared cupric oxide (CuO) nanosheets as saturable absorber at 1.06 µm was realized for the first time.
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Thermal broadening of the power spectra of laser-trapped particles in vacuum

Makoto Yoneda, +1 more
- 20 Nov 2017 - 
TL;DR: In this article, the spectral widths of the power spectra of laser-trapped particles are nearly independent from pressures and, due to the nonlinearities of the trap, reflect the thermal distribution of particles.
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.
Journal Article

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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Zeptogram-Scale Nanomechanical Mass Sensing

TL;DR: Analysis of the ultimate sensitivity of very high frequency nanoelectromechanical systems indicates that NEMS can ultimately provide inertial mass sensing of individual intact, electrically neutral macromolecules with single-Dalton (1 amu) resolution.
Journal ArticleDOI

A nanomechanical mass sensor with yoctogram resolution

TL;DR: This unprecedented level of sensitivity allows us to detect adsorption events of naphthalene molecules, and to measure the binding energy of a xenon atom on the nanotube surface, which could have applications in mass spectrometry, magnetometry and surface science.
Journal ArticleDOI

On the Resistance Experienced by Spheres in their Motion through Gases

TL;DR: In this article, the authors derived the force exerted by the impinging molecules leaving the surface depending on how they leave, assuming the usual Maxwellian distribution of velocities in the gas, the force was found to be M where M=(4π/3) Nma2cmV, N, m, a, and V being the number per unit volume, mass, radius, and mean speed of the molecules and V the speed of a droplet.
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