Field-induced realignment of a smectic nanodroplet in an external magnetic field: a numerical investigation.

The European Physical Journal. E, Soft Matter
Y K Levine, W Bras

Abstract

The field-induced realignment of a smectic-A phase is in principle a complicated process involving the director rotation via the interaction with the field and the layer rotation via the molecular interactions. Time-resolved X-ray scattering experiments have revealed major phenomena concerning the maintenance of the integrity of the smectic-A layer structure during the alignment process. In order to obtain a deeper insight into this process, we have carried out a dissipative particle dynamics study of the realignment kinetics of a nanodroplet of a smectic-A liquid crystal suspended in an isotropic fluid following a switch in the direction of an applied magnetic field. The strength of the mesogen-field interaction is small compared to the inter-molecular interactions. The reaction of the smectic configuration to the field switch was found to depend on the balance between the inter-molecular interactions stabilising the formation of the smectic layering and the interaction of the mesogens with the external field. It is found that the rotational behaviour of the smectic layers under the influence of an external magnetic field arises from a combination of stochastic translational displacements and rotational motions of the centres ...Continue Reading

References

Dec 24, 2002·Biophysical Journal·Gary Ayton, Gregory A Voth
Aug 31, 2004·The Journal of Chemical Physics·W BrasB A Timimi
Apr 26, 2005·The Journal of Chemical Physics·Yehudi K LevineAntonino Polimeno
May 15, 2007·The European Physical Journal. E, Soft Matter·Y K Levine, A Polimeno
Oct 11, 1947·Nature·A GUINIER, G FOURNET

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Citations

Mar 1, 2017·Revista de salud pública·Fabrício Sousa Simões, José Fernandes Filho
Apr 28, 2009·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·P D BrimicombeH F Gleeson

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