@article{ee652688effc4125b5d46a87d5bcdebe,
title = "Cavity-enhanced optical detection of carbon nanotube Brownian motion",
abstract = "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 70 pm / 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 extends the principles of high-sensitivity optomechanical detection to molecular scale nanomechanical systems.",
author = "S. Stapfner and L. Ost and D. Hunger and J. Reichel and I. Favero and Weig, {E. M.}",
note = "Funding Information: We thank C. Sch{\"o}nenberger and M. Weiss for help in setting up clean CNT growth, M. D{\"o}blinger for TEM analysis and imaging, J. P. Kotthaus and K. Karra{\"i} for fruitful discussions, and D. R. Southworth for critically reading the manuscript. We acknowledge financial support from the German-Israeli Foundation (GIF), the German Excellence Initiative via the Nanosystems Initiative Munich (NIM), the German/French Academic Exchange Service (DAAD/EGIDE Procope program), and the Bayerisch-Franz{\"o}sisches Hochschulzentrum (BFHZ).",
year = "2013",
month = apr,
day = "15",
doi = "10.1063/1.4802746",
language = "English",
volume = "102",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics",
number = "15",
}