Orientational relaxation for small wavevectors of rod-like Brownian particles
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| Formato: | Artículo científico |
| Lenguaje: | en |
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Sociedad Mexicana de Física A.C.
2017
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| _version_ | 1876446656404127744 |
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| author | E. Ramos-Organillo |
| author_facet | E. Ramos-Organillo |
| contents | Orientational relaxation for small wavevectors of rod-like Brownian particles E. Ramos-Organillo H. Ruiz-Estrada O. Alarcon-Waess Física, Astronomía y Matemáticas phase transition smoluchowski equation second order parameter Orientational relaxation We present a theorical study of the kinetic orientational relaxation of a colloidal monodispersed system of stiff and long rods, for small wavevectors. This process is described by the dynamic structure factor. The relationship between this factor with the fluctuations of the sec- ond order parameter is provided in the limit of wavevectors going to zero. The second order parameter is computed with the Smoluchowski formalism, neglecting hydrodynamic interactions, and using the Maier-Saupe potential for the rods interaction. Considering suitable prop- erties, the isothermal orientation susceptibility proposed is able to localize the isotropic and nematic concentrations in qualitative agreement with well known computer simulations results. At relaxation our model predicts a single value for the maximum of the orientation property proposed, which it is reached at different times, according to the concentration. 2017 artículo científico 0035-001X https://www.redalyc.org/articulo.oa?id=57053213005 en http://www.redalyc.org/revista.oa?id=570 Revista Mexicana de Física application/pdf Sociedad Mexicana de Física A.C. Revista Mexicana de Física (México) Num.6 Vol.63 |
| format | Artículo científico |
| id | redalyc_57053213005 |
| institution | Redalyc |
| language | en |
| publishDate | 2017 |
| publisher | Sociedad Mexicana de Física A.C. |
| spellingShingle | Orientational relaxation for small wavevectors of rod-like Brownian particles E. Ramos-Organillo Física, Astronomía y Matemáticas phase transition smoluchowski equation second order parameter Orientational relaxation Orientational relaxation for small wavevectors of rod-like Brownian particles E. Ramos-Organillo H. Ruiz-Estrada O. Alarcon-Waess Física, Astronomía y Matemáticas phase transition smoluchowski equation second order parameter Orientational relaxation We present a theorical study of the kinetic orientational relaxation of a colloidal monodispersed system of stiff and long rods, for small wavevectors. This process is described by the dynamic structure factor. The relationship between this factor with the fluctuations of the sec- ond order parameter is provided in the limit of wavevectors going to zero. The second order parameter is computed with the Smoluchowski formalism, neglecting hydrodynamic interactions, and using the Maier-Saupe potential for the rods interaction. Considering suitable prop- erties, the isothermal orientation susceptibility proposed is able to localize the isotropic and nematic concentrations in qualitative agreement with well known computer simulations results. At relaxation our model predicts a single value for the maximum of the orientation property proposed, which it is reached at different times, according to the concentration. 2017 artículo científico 0035-001X https://www.redalyc.org/articulo.oa?id=57053213005 en http://www.redalyc.org/revista.oa?id=570 Revista Mexicana de Física application/pdf Sociedad Mexicana de Física A.C. Revista Mexicana de Física (México) Num.6 Vol.63 |
| title | Orientational relaxation for small wavevectors of rod-like Brownian particles |
| topic | Física, Astronomía y Matemáticas phase transition smoluchowski equation second order parameter Orientational relaxation |
| url | https://www.redalyc.org/articulo.oa?id=57053213005 |