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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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Coherent oscillations of a levitated birefringent microsphere in vacuum driven by nonconservative rotation-translation coupling.

TL;DR: An effect whereby stochastic, thermal fluctuations combine with nonconservative optical forces to break detailed balance and produce increasingly coherent, apparently deterministic motion for a vacuum-trapped particle is demonstrated.
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Acceleration sensing with magnetically levitated oscillators above a superconductor

TL;DR: In this paper, stable trapping of a permanent magnet sphere above a lead superconductor, in vacuum pressures of $4 \times 10-8}$~mbar, was demonstrated.
Posted Content

Optical Tweezers: A Comprehensive Tutorial from Calibration to Applications

TL;DR: This Tutorial provides a step-by-step guide ideal for non-specialists entering the field and a comprehensive manual of advanced techniques useful for expert practitioners on how to calibrate optical tweezers.
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Optical levitation of nanodiamonds by doughnut beams in vacuum

TL;DR: In this article, the authors proposed to solve the problem by trapping a composite particle (a nanodiamond core coated with a less absorptive silica shell) at the center of strongly focused doughnut-shaped laser beams.
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.
Journal ArticleDOI

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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