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Feeling the Ultrasensitive Force with a Levitating Nanoparticle

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Optically levitating nanoparticles in high-vacuum conditions have led to the measurement of the highest quality factors (Q-factors) in nano- and micromechanical oscillators. Oscillators with high Q-factors are gaining attention for their potential as ultrasensitive detectors. Unlike microfabricated devices, optically trapped nanoparticles in a vacuum do not suffer from clamping losses, resulting in much larger Q-factors. The work overcomes limitations to advances in mechanical resonator fabrication and design and makes the devices more suitable for sensing, signal processing and...Read full article

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    Published: November 2013
    Glossary
    nano
    An SI prefix meaning one billionth (10-9). Nano can also be used to indicate the study of atoms, molecules and other structures and particles on the nanometer scale. Nano-optics (also referred to as nanophotonics), for example, is the study of how light and light-matter interactions behave on the nanometer scale. See nanophotonics.
    nanoparticle
    A small object that behaves as a whole unit or entity in terms of it's transport and it's properties, as opposed to an individual molecule which on it's own is not considered a nanoparticle.. Nanoparticles range between 100 and 2500 nanometers in diameter.
    plasmon
    Calculated quantity of the entire longitudinal wave of a solid substance's electron gas.
    ETH ZurichEuropeforce sensitivityICFOJan Gieselerleviatingnanonano-opticsnanomechanical resonatornanoparticlenanoresonatorOpticsoscillationplasmonQ-factorResearch & TechnologyTech PulseTest & MeasurementLasers

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