Hauptseminar Soft Matter SS 2019/Transport of electrolytes across porous materials

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Date

2019-05-24

Time

14:00

Topic

Transport of electrolytes across porous materials

Speaker

Tutor

Paolo Malgaretti

Contents

The transport of electrolytes across varying section channels or porous material is of paramount importance due to its relevance in diverse fields spanning from biology to oil extraction. Clearly in these scenarios the shape of the porous media or the ionic channel is crucial in determining the transport properties of the electrolyte, or viceversa, for every channel shape it is possible to identify an optimal protocol that maximizes the transport. In this seminar, we will present a simplified approach capable of capturing the role of the shape of the container in the overall transport. By means of our simplified approach we will show that novel dynamical regimes can be attained when the Debye length is comparable to the channel bottleneck.

Literature

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  [DOI] [URL]
• Paolo Malgaretti, Ignacio Pagonabarraga, J. Miguel Rubi.
  Entropic Electrokinetics: Recirculation, Particle Separation, and Negative Mobility.
  Physical Review Letters 113(128301), 2014.
  [PDF] (172 KB) [DOI]
• Mauro Chinappi, Paolo Malgaretti.
  Charge polarization, local electroneutrality breakdown and eddy formation due to electroosmosis in varying-section channels.
  Soft Matter 14(45):9083-9087, 2018.
  [DOI]