IPM Calendar 
Friday 29 March 2024   Today  
Events for day: Wednesday 13 March 2019    
           14:00 - 16:00     Seminar
Multi-sensory cue combination in dynamic environments: from neuron to behaviour

School
COGNITIVE SCIENCES

Abstract:
Making the optimal decision in the face of multiple sensory inputs from different modalities is essential for survival in a dynamic environment. A key question is how the brain combines sensory cues when they do not agree and there are nonstationary contingencies between sensory cues and action outcomes. We address this question in a combined electrophysiological, behavioural and computational study using a visuotactile two-choice orientation categorisation task in rodents. Rats were trained to categorise the orientation of a 10cm-diameter disc with alternating black and white ridges and grooves by licking at one of the two ...

           14:00 - 15:00     Weekly Seminar
Condensed Matter and Statistical Physics Group
Cylindrical nematic liquid crystal shell: Effect of saddle-splay elasticity

School
PHYSICS

Seminar Room (classroom A), Farmanieh Building, IPM ...

           14:00 - 15:00     Weekly Seminar
Cylindrical nematic liquid crystal shell: Effect of saddle-splay elasticity

School
NANO SCIENCES

Cylindrical nematic liquid crystal shell: Effect of saddle-splay elasticity

Abstract:

In this seminar, I introduce cylindrical nematic liquid crystal (LC) shells. Shells as confinement can provide soft matter with intriguing topology and geometry. Indeed, in spherical shells of LCs, rich defect structures have been reported. Avoiding the inherent Plateau-Rayleigh instability of cylindrical liquid-liquid interfaces, we realize the cylindrical nematic LC shell by two different methods: the phase separation in the nematic-isotropic coexistence phase and a cylindrical cavity with a glass rod suspended in the m ...