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Cavity-enhanced optical detection of carbon nanotube Brownian motion

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2012

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Stapfner, Sebastian
Ost, Lukas
Hunger, David
Reichel, Jakob
Favero, Ivan

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http://nbn-resolving.de/urn:nbn:de:bsz:352-227687
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http://arxiv.org/abs/1211.1608

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Physik: Publikationen
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Zusammenfassung

Optical cavities with small mode volume are well-suited to detect the vibration of sub-wavelength sized objects. Here we employ a fiber-based, high-finesse optical microcavity to detect the Brownian motion of a freely suspended carbon nanotube at room temperature under vacuum. The optical detection resolves deflections of the oscillating tube down to 50pm/Hz^1/2. A full vibrational spectrum of the carbon nanotube is obtained and confirmed by characterization of the same device in a scanning electron microscope. Our work successfully extends the principles of high-sensitivity optomechanical detection to molecular scale nanomechanical systems.

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530 Physik

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ISO 690STAPFNER, Sebastian, Lukas OST, David HUNGER, Eva M. WEIG, Jakob REICHEL, Ivan FAVERO, 2012. Cavity-enhanced optical detection of carbon nanotube Brownian motion
BibTex
@unpublished{Stapfner2012Cavit-22768,
  year={2012},
  title={Cavity-enhanced optical detection of carbon nanotube Brownian motion},
  author={Stapfner, Sebastian and Ost, Lukas and Hunger, David and Weig, Eva M. and Reichel, Jakob and Favero, Ivan}
}
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