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dc.contributor.authorRosales Guzmán, Carmelo
dc.contributor.authorHermosa, Nathaniel
dc.contributor.authorBelmonte Molina, Aniceto
dc.contributor.authorPérez Torres, Juan
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
dc.identifier.citationRosales, C. [et al.]. Measuring the translational and rotational velocities of particles in helical motion using structured light. "The Virtual Journal for Biomedical Optics", 07 Agost 2014, vol. 9, núm. 8, p. 16504-16509.
dc.description.abstractWe measure the rotational and translational velocity components of particles moving in helical motion under a Laguerre-Gaussian mode illumination. The moving particle reflects light that acquires an additional frequency shift proportional to the velocity of rotation in the transverse plane, on top of the usual frequency shift due to the longitudinal motion. We determined both the translational and rotational velocities of the particles by switching between two modes: by illuminating with a Gaussian beam, we can isolate the longitudinal frequency shift; and by using a Laguerre-Gaussian mode, the frequency shift due to the rotation can be determined. Our technique can be used to characterize the motility of microorganisms with a full three-dimensional movement.
dc.format.extent6 p.
dc.subjectÀrees temàtiques de la UPC::Enginyeria electrònica::Instrumentació i mesura
dc.subject.lcshLaser Doppler velocimeter
dc.titleMeasuring the translational and rotational velocities of particles in helical motion using structured light
dc.subject.lemacDoppler, Efecte
dc.contributor.groupUniversitat Politècnica de Catalunya. RSLAB - Grup de Recerca en Teledetecció
dc.contributor.groupUniversitat Politècnica de Catalunya. FOTONICA - Grup de Recerca de Fotònica
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (published version)
local.citation.authorRosales, C.; Hermosa, N.; Belmonte, A.; Juan P. Torres
local.citation.publicationNameThe Virtual Journal for Biomedical Optics

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