María

updated at 22:03:41 on 28/6/2008

Ph.D. María Tirado-Miranda Lecturer
Department of Applied Physics
Faculty of Sciences (Google Earth)
University of Granada
Campus de Fuentenueva s/n
18071 Granada (Spain)
Tel: +34-958246104
Fax: +34-958243214
E-mail: mtirado@ugr.es
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NEWS: the III Reunión Ibérica de Coloides e Interfases (RICI3) and VIII Reunión del Grupo Especializado de Coloides e Interfases (VIIIGECI) will be held in Granada, 13-15th July 2009


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Light Scattering Techniques Applied to Colloidal Aggregation (.PPS)

Considerable interest has been focused on the study of dynamic structures, in which an irreversible addition of subunits leads to cluster formation. The aggregation of colloidal particles is a good model for studying this structure formation phenomenon, which can be described by the time evolution of the cluster-size distribution. Determining the detailed cluster-size distribution is important since many of the physical properties of a colloid depend on that distribution. Powerful light scattering techniques have been successfully used to determine these cluster-size distributions. In this study, static and dynamic light scattering were used to detect the size distributions of aggregating colloidal dispersions. Dynamic light scattering allows to obtain the mean diffusion coefficients of the aggregates and their mean hydrodynamic radius. Static light scattering assesses the internal structure of aggregates by measuring the angular dependence of the scattered light. Either of these techniques has proven to be a very suitable tool to study aggregation processes without perturbing the aggregating system.

  1. Projects Participation
    • Excellence research project (Junta de Andalucia, ref. FQM-02517) entitled "Complex fluids confined in curved interfaces" (01/2008-12/2010).
    • Industrial project of technological development (CDTI, ref. IDI-200700509) entitled "Reactivos de inmuno-cromatografía para cuantificación y aumento de sensibilidad" (25/07/2007-24/07/2009).
    • Research project of the national programme PETRI (MEC, ref. PET2005_0548_00) entitled "Influencia del tratamiento térmico en la capacidad impermeabilizante de las emulsiones de parafina" (19/12/2006-18/12/2008)
    • Research project of the national programme of materials (MEC, ref. MAT2006-12918-C05-01) entitled "Propiedades eléctricas, estructurales y dinámicas de dispersiones de nanopartículas con aplicaciones biotecnológicas" (01/10/2006-30/09/2009).
    • Excelence research project (Junta de Andalucía, ref. FQM-392) de la convocatoria 2005 entitled "Estructuras y propiedades de sistemas coloidales en 2- y 3-D" (01/01/2006-31/12/2008)
    • Research project of the national programme of materials (MEC, ref. MAT2006-13646-C03-03) entitled "Materiales de aplicación nano y biotecnológica: tribo-reología de fluidos magnéticos" (01/10/2006-30/09/2009).
    • Research project of the national programme of materials (MEC, ref. MAT2003-08356-C04-04) entitled "Nuevas estructuras coloidales con materiales nanoparticulados" (2003-2006).
    • Research project of the national programme of materials (MEC, ref. MAT2000-1550-C03-03) entitled "Estabilidad, agregación y propiedades dieléctricas de dispersiones coloidales: Aplicación a sistemas densos" (2000-2003).
  2. International Publications
  3. Book Chapters
    • J. Callejas-Fernández, M. Tirado-Miranda, M. Quesada-Pérez, G. Odriozola-Prego and A. Schmitt, Photon Spectroscopy of Colloids, Enciclopedia of Surface & Colloid Science (I.S.B.N.: 0-8247-0633-1), 4072-4089, 2002, Marcel Dekker, In, New York / EEUU
    • G. Odriozola-Prego, M. Tirado-Miranda, A. Schmitt and J. Callejas-Fernández, Colloidal aggregation processes, Enciclopedia of Surface & Colloid Science (I.S.B.N.: 0-8247-0633-1), 2004, Marcel Dekker, In, New York / EEUU
  4. National Publications
    • M. Tirado-Miranda, A. Schmitt, J. Callejas-Fernández and A. Fernández-Barbero, Cómo iluminar la invisible y ver algo: estructura fractal coloidal, Coloides e Interfases (I.S.B.N.: 84-8138-250-7), 227-234, 1997, Universidad de Alcalá, Madrid / España
    • J. Callejas-Fernández, M. Tirado-Miranda, A. Schmitt and A. Fernández-Barbero, Measuring the fractal dimension of colloidal aggregates, Anales de Física, 94,73-78, 1998
    • M. Tirado-Miranda, A. Schmitt, J. Callejas-Fernández and A. Fernández-Barbero, Agregación de nanopartículas de poliestireno estabilizadas electroestéricamente, Coloides e Interfases. Estado Líquido (I.S.B.N.: 84-8240-191-2), 397-412, 1999, Universidad de Almería
    • M. Tirado-Miranda, A. Schmitt, J. Callejas-Fernández and A. Fernández-Barbero, Agregación coloidal en presencia de albúmina de suero bovino: influencia del grado de recubrimiento, Boletín de la Sociedad Española de Cerámica y Vidrio, 39 [4],419-423, 2000
    • Doscientos años de Meniscos Líquidos: 1805-2005, M.A. Rodríguez Valverde y M. Tirado Miranda. Revista Española de Física 20(3), 51-56 Notas Históricas, (2006).

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