ESPCI web site
Séminaire Café (Interne)
Il s’agit d’un exposé assez court (20 min) et assez informel.
Prière aux conférencier·ère·s de ne jamais dépasser 30 min et de vérifier la compatibilité avec le projecteur avant le séminaire.
Les séminaires ont lieu les jeudis après la réunion du laboratoire qui débute à 13h30 dans la bibliothèque du labo sur le campus Jussieu, Barre Cassan, Bât A, 1er étage.
Pour suggérer un titre et envoyer un abstract, contacter 
et 
.
Coffee seminars are supposed to be short and informal presentations (20 min).
Please never last longer than 30 min and check the compatibility of the projector with your computer before the seminar.
Location : Campus Jussieu, Barre Cassan, Bât A, 1er étage
7 quai Saint Bernard
75005 Paris
To suggest a title or send an abstract, please contact and
| 29 octobre | Yassine Mimoh - LadHyX The break-up (or not) of a nematic liquid crystal cylinder Nematic liquid crystals can flow like any other liquid, but because their elongated molecules exhibit long range orientational order, this flow is governed by an interplay of internal elasticity and anisotropic viscosity. Additionally, at a bounding surface, and through molecular interactions, the nematic adopts a preferential orientation referred to as anchoring. A classical set-up where all these elements coexist is the Rayleigh-Plateau instability of a cylinder of fluid. Here, surface tension acts through the curvature associated with the cylinder’s finite radius and generates a destabilizing flow. Our work then investigates how a nematic, through the coupling between flow, elasticity and anchoring at the free surface, affects this instability. Specifically, whether it can slow it down or even halt it, as certain dilute polymer solutions achieve through the elastic cost associated with the elongation of their molecules. By considering a nematic coating a fiber, we do so, first, through a linear analysis to determine the instability threshold and its growth rate if and when the system is unstable. Second, a long-wave approximation is used to investigate how the non-linearities introduced by a nematic modify the filament’s evolution close to the fiber, and the eventual drop size distribution. |
| 5 novembre | 2nd Year PhD students’ presentations - Alessandro & Anuran |
| 12 novembre | Soumia El Montasser - ISIR |
