@inproceedings{cb9ec23ec55a494387e42c22b103fae3,
title = "Microphotography of an electrodynamically levitated microparticle",
abstract = "An electrodynamic levitator-trap (Paul trap) is used at line frequency (i.e. 60 Hz) as a sample cell for the long term microphotography of a microparticle in air at STP. Images are obtained in a trap modified to eliminate stray static fields at its AC 'null' point. Resolution in these long term images is found to be limited principally by stochastic thermal fluctuations and optical diffraction. A stochastic differential equation constructed for describing the particle's motion is found to be in good agreement with imaging experiments. This model provides an optimal limit to which a particle may be localized by increasing the drive potential, and indicates that this limit is a function principally of particle size and temperature. Images taken in fluorescence from a glycerol particle containing a probable surfactant are presented. Polarization resolution of these images clearly shows segregation of the molecule to the surface and identifies the orientation of the molecular emission moment in relation to the surface normal.",
author = "Steven Arnold and Folan, {Lorcan M.}",
year = "1993",
language = "English (US)",
isbn = "0819410896",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "Publ by Int Soc for Optical Engineering",
pages = "218--222",
booktitle = "Proceedings of SPIE - The International Society for Optical Engineering",
note = "Laser Applications in Combustion and Combustion Diagnostics ; Conference date: 19-01-1993 Through 20-01-1993",
}