15 January 2020 from 13:15 to 14:00

Debye Lunch Lecture

Debye Lunch Lecture - Biaxial, Twist-bend, and Splay-bend Nematic Phases of Bananashaped Particles Revealed by Lifting the “Smectic Blanket”

In the bimonthly Debye lunch lectures, young scientists from the Debye Institute for Nanomaterials Science present their research.

This Debye Lunch Lecture, Biaxial, Twist-bend, and Splay-bend Nematic Phases of Bananashaped Particles Revealed by Lifting the “Smectic Blanket”, will be given by Massimiliano Chiappini from the Soft Condensed Matter & Biophysics research group.

Abstract

(M. Chiappini, T. Drwenksi, R. van Roij, M. Dijkstra)

We perform an extensive computational study on the phase behavior of hard banana-shaped particles, and show that biaxial, twist-bend, and splay-bend nematic phases are metastable with respect to a smectic phase for a system of hard bent spherocylinders. However, if the smectic phase is destabilized—either by polydispersity in the particle length or by curvature in the particle shape—stable biaxial, twist-bend, and splay-bend nematic phases are obtained. This provides a unified and consistent picture on the subtle role of particle shape on the phase behavior of bent rods.

Start date and time
15 January 2020 13:15
End date and time
15 January 2020 14:00
Entrance fee
Free of charge
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