dor_id: 4108106

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100.1.#.a: L, B.; D, M.

524.#.#.a: L, B., et al. (2014). Brownian motion of a colloidal particle immersed in a polymeric solution near a rigid wall. Revista Mexicana de Física; Vol 60, No 3 May-Jun: 243-0. Recuperado de https://repositorio.unam.mx/contenidos/4108106

245.1.0.a: Brownian motion of a colloidal particle immersed in a polymeric solution near a rigid wall

502.#.#.c: Universidad Nacional Autónoma de México

561.1.#.a: Facultad de Ciencias, UNAM

264.#.0.c: 2014

264.#.1.c: 2014-01-01

653.#.#.a: Three-dimensional digital video microscopy; Brownian motion; viscoelastic fluid

506.1.#.a: La titularidad de los derechos patrimoniales de esta obra pertenece a las instituciones editoras. Su uso se rige por una licencia Creative Commons BY-NC-ND 4.0 Internacional, https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode.es, fecha de asignación de la licencia 2014-01-01, para un uso diferente consultar al responsable jurídico del repositorio por medio de rmf@ciencias.unam.mx

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001.#.#.#: oai:ojs.rmf.smf.mx:article/4082

041.#.7.h: eng

520.3.#.a: By using three-dimensional digital video microscopy (DVM-3D), we study the displacement of a Brownian particle immersed in a polymeric solution located near a rigid wall. The technique takes advantage of the diffraction pattern generated by a fluorescent particle that is found below the focal plane of an optical microscope. The particle is then tracked from the analysis of a sequence of digitized images to reconstruct its trajectory, which provides relevant information about the properties of the system. In a first stage, we obtain the mean square displacement (MSD) of a spherical probe dissolved in a viscoelastic solution. This MSD is then used to determine the elastic and viscous moduli of the suspension. Such measurements are consistent with bulk measurements performed by means of two techniques, namely, diffusing wave spectroscopy and mechanical rheology. Near the rigid wall, the motion of the probe particle can be split in two directions, i.e., parallel and perpendicular to the surface. For short times (but still in the Brownian regime), such motion can be characterized by means of two distance dependent friction coefficients. We observe deviations of the measured friction coefficients in comparison with the Newtonian behavior.

773.1.#.t: Revista Mexicana de Física; Vol 60, No 3 May-Jun (2014): 243-0

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046.#.#.j: 2020-11-25 00:00:00.000000

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handle: 6e1781a42e68a4d9

harvesting_date: 2020-09-23 00:00:00.0

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last_modified: 2020-11-27 00:00:00

license_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode.es

license_type: by-nc-nd

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Artículo

Brownian motion of a colloidal particle immersed in a polymeric solution near a rigid wall

L, B.; D, M.

Facultad de Ciencias, UNAM, publicado en Revista Mexicana de Física, y cosechado de Revistas UNAM

Licencia de uso

Procedencia del contenido

Entidad o dependencia
Facultad de Ciencias, UNAM
Revista
Repositorio
Contacto
Revistas UNAM. Dirección General de Publicaciones y Fomento Editorial, UNAM en revistas@unam.mx

Cita

L, B., et al. (2014). Brownian motion of a colloidal particle immersed in a polymeric solution near a rigid wall. Revista Mexicana de Física; Vol 60, No 3 May-Jun: 243-0. Recuperado de https://repositorio.unam.mx/contenidos/4108106

Descripción del recurso

Autor(es)
L, B.; D, M.
Tipo
Artículo de Investigación
Área del conocimiento
Físico Matemáticas y Ciencias de la Tierra
Título
Brownian motion of a colloidal particle immersed in a polymeric solution near a rigid wall
Fecha
2014-01-01
Resumen
By using three-dimensional digital video microscopy (DVM-3D), we study the displacement of a Brownian particle immersed in a polymeric solution located near a rigid wall. The technique takes advantage of the diffraction pattern generated by a fluorescent particle that is found below the focal plane of an optical microscope. The particle is then tracked from the analysis of a sequence of digitized images to reconstruct its trajectory, which provides relevant information about the properties of the system. In a first stage, we obtain the mean square displacement (MSD) of a spherical probe dissolved in a viscoelastic solution. This MSD is then used to determine the elastic and viscous moduli of the suspension. Such measurements are consistent with bulk measurements performed by means of two techniques, namely, diffusing wave spectroscopy and mechanical rheology. Near the rigid wall, the motion of the probe particle can be split in two directions, i.e., parallel and perpendicular to the surface. For short times (but still in the Brownian regime), such motion can be characterized by means of two distance dependent friction coefficients. We observe deviations of the measured friction coefficients in comparison with the Newtonian behavior.
Tema
Three-dimensional digital video microscopy; Brownian motion; viscoelastic fluid
Idioma
eng
ISSN
2683-2224 (digital); 0035-001X (impresa)

Enlaces