Artículo
Versatile Microfluidics Separation of Colloids by Combining External Flow with Light-Induced Chemical Activity
Autor/es | Bekir, Marek
Sperling, Marcel Vasquez Muñoz, Daniela Braksch, Cevin Boker, Alexander Lomadze, Nino Popescu, Mihail N. Santer, Svetlana |
Departamento | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear |
Fecha de publicación | 2023-06-22 |
Fecha de depósito | 2024-03-21 |
Publicado en |
|
Premios | Premio Mensual Publicación Científica Destacada de la US. Facultad de Física |
Resumen | Separation of particles by size, morphology, or material identity is of paramount importance in fields such as filtration or bioanalytics. Up to now separation of particles distinguished solely by surface properties or ... Separation of particles by size, morphology, or material identity is of paramount importance in fields such as filtration or bioanalytics. Up to now separation of particles distinguished solely by surface properties or bulk/surface morphology remains a very challenging process. Here a combination of pressure-driven microfluidic flow and local self-phoresis/osmosis are proposed via the light-induced chemical activity of a photoactive azobenzene-surfactant solution. This process induces a vertical displacement of the sedimented particles, which depends on their size and surface properties . Consequently, different colloidal components experience different regions of the ambient microfluidic shear flow. Accordingly, a simple, versatile method for the separation of such can be achieved by elution times in a sense of particle chromatography. The concepts are illustrated via experimental studies, complemented by theoretical analysis, which include the separation of bulk-porous from bulk-compact colloidal particles and the separation of particles distinguished solely by slight differences in their surface physico-chemical properties. |
Agencias financiadoras | Deutsche Forschungsgemeinschaft / German Research Foundation (DFG) Junta de Andalucía Ministerio de Ciencia e Innovación (MICIN). España Agencia Estatal de Investigación. España European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER) |
Identificador del proyecto | BE-7745/1-1
US-1380729 ProyExcel_00505 PID2021-126348N |
Cita | Bekir, M., Sperling, M., Vasquez Muñoz, D., Braksch, C., Boker, A., Lomadze, N.,...,Santer, S. (2023). Versatile Microfluidics Separation of Colloids by Combining External Flow with Light-Induced Chemical Activity. Advanced Materials, 35 (25), 2300358. https://doi.org/10.1002/adma.202300358. |
Ficheros | Tamaño | Formato | Ver | Descripción |
---|---|---|---|---|
10.1002_adma.202300358.pdf | 2.493Mb | [PDF] | Ver/ | |