Light-induced rotations of chiral birefringent microparticles in optical tweezers

We study the rotational dynamics of solid chiral and birefringent microparticles induced by elliptically polarized laser light in optical tweezers. We find that both reflection of left circularly polarized light and residual linear retardance affect the particle dynamics. The degree of ellipticity o...

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Detalles Bibliográficos
Autores principales: Donato, M. G., Mazzulla, A., Pagliusi, P., Magazzù, A., Hernandez, R. J., Provenzano, C., Gucciardi, P. G., Maragò, O. M., Cipparrone, G.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5013277/
https://www.ncbi.nlm.nih.gov/pubmed/27601200
http://dx.doi.org/10.1038/srep31977
Descripción
Sumario:We study the rotational dynamics of solid chiral and birefringent microparticles induced by elliptically polarized laser light in optical tweezers. We find that both reflection of left circularly polarized light and residual linear retardance affect the particle dynamics. The degree of ellipticity of laser light needed to induce rotations is found. The experimental results are compared with analytical calculations of the transfer of angular moment from elliptically polarized light to chiral birefringent particles.

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