Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/199127
Type: Artigo de periódico
Title: Gradient Forces On Double-negative Particles In Optical Tweezers Using Bessel Beams In The Ray Optics Regime.
Author: Ambrosio, Leonardo A
Hernández-Figueroa, Hugo E
Abstract: Gradient forces on double negative (DNG) spherical dielectric particles are theoretically evaluated for v-th Bessel beams supposing geometrical optics approximations based on momentum transfer. For the first time in the literature, comparisons between these forces for double positive (DPS) and DNG particles are reported. We conclude that, contrary to the conventional case of positive refractive index, the gradient forces acting on a DNG particle may not reverse sign when the relative refractive index n goes from |n|>1 to |n|<1, thus revealing new and interesting trapping properties.
Rights: fechado
Identifier DOI: 
Address: http://www.ncbi.nlm.nih.gov/pubmed/21164774
Date Issue: 2010
Appears in Collections:Unicamp - Artigos e Outros Documentos

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