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Marangoni flows and instabilities during drying

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If you have a question about this talk, please contact Catherine Pearson.

Inhomogeneous drying conditions result in Marangoni flows and instabilities with a free-surface deformation. Surface tension of multi-component solutions depend on both temperature and composition, and a local inhomogeneous heat and mass transfer lead to mass flow and film defects. In order to investigate the flow field within thin films, a new measurement technique (3D μPTV) has been developed. This measurement technique gives unique insights, which will allow us to identify process parameters crucial to the surface homogeneity of thin films and printed structures. An overview about former results and new results will be presented with a focus on stability analysis and a critical Marangoni number and new correlation.

We are delighted that the BPI seminars will be delivered in-person and via Zoom going forward beginning this Thursday, although limited numbers able to attend in person.

To book an in-person seat at the seminar this Thursday please use the link below – please note that once the number is reached you will not be able to register. There will also be a selection of individually wrapped sandwich lunches for everyone who is attending in-person.

Face coverings are expected to be worn on arrival at the BPI Institute AND during the seminar and in all communal areas. Face coverings should only be removed once you have collected lunch and are back at your seat. Please also note that for ventilation windows in the Open Plan Area must remain open at all times.

This talk is part of the Institute for Energy and Environmental Flows (IEEF) series.

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