POB Seminar - Evolution of the electrical double layer with electrolyte concentration probed by Second Harmonic Scattering

The EPFL Photonics Chapter (EPC) is very pleased to announce and cordially invite you to our monthly ‘Pizza-Optics-Beer’ (POB) seminar on July 3rd, at 18:15 in room CO 122.



This month we will have the pleasure to host Bingxin Chu - Julia Jacobi Chair of Photomedicine from Laboratory for fundamental BioPhotonics with the presentation entitled:

"Evolution of the electrical double layer with electrolyte concentration probed by Second Harmonic Scattering"

For organizational purposes (if you want to eat pizza!), please confirm your participation using this Doodle.
Don’t hesitate to extend the invitation to any postdoc and colleague!

Hope to see you there,
The team of the EPFL Photonics Chapter



Abstract:
Interfaces buried in aqueous solutions significantly influence the properties of the system. Investigating the electrical double layer (EDL) structure, which commonly appears near charged surfaces, has been a long-standing challenge as following sophisticated properties of the EDL is not straightforward. Polarimetric angle-resolved second-harmonic scattering (AR-SHS) is an all-optical tool enabling the study of unlabeled interfaces of nanosized particles and objects in an aqueous solution. This technique utilizes the interactions between light and matter, specifically through the spontaneous electron cloud of water molecules oriented near the surface of the scatterer. This talk will provide an overview of the principle of the AR-SHS technique, discussing its fundamental principles and methodological studies on its size dependence. It will then focus on the application of this technique in probing the evolution of the EDL thickness with increasing ionic concentration at the molecular level.



You don't know POBs?
POBs (Pizza-Optics-Beer) are monthly seminars organized by the student association EPFL Photonics Chapter.
A PhD or a postdoc gives a 20-minutes presentation about his/her research in photonics. Discussions continue informally around pizza and beers!
The event is free and open to anyone.

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