Optimization of an object shape to achieve extremal axial optical force in a standing wave

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081731%3A_____%2F09%3A00335079" target="_blank" >RIV/68081731:_____/09:00335079 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Optimization of an object shape to achieve extremal axial optical force in a standing wave
Original language description
We consider prolate objects of cylindrical symmetry with radius periodically modulated along the axial direction and we present a theoretical study of optimized objects shapes resulting in up to tenfold enhancement of the axial optical force in comparison with the original unmodulated object shape. We obtain analytical formulas for the axial optical force acting on low refractive index objects where the light scattering by the object is negligible. Numerical results based on the coupled dipole method support the previous simplified analytical conclusions and they are also presented for objects with higher refractive indices. The objects are trapped in a standing wave, that offers many useful advantages in comparison to single beam trapping, especiallyfor submicrometer size particles. It provides axial force stronger by several orders of magnitude, much higher axial trap stiffness, and spatial confinement of particles with higher refractive index.
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2009
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Optical Trapping and Optical Micromanipulation VI. (Proceedings of SPIE Vol. 7400)
ISBN
978-0-8194-7690-6
ISSN
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e-ISSN
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Number of pages
11
Pages from-to
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Publisher name
SPIE
Place of publication
Bellingham
Event location
San Diego
Event date
Aug 2, 2009
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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