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Star colloids in nematic liquid crystals

Lapointe, Clayton P. ; Mayor, Kenny ; Mason, Thomas G.

In: Soft Matter, 2013, vol. 9, no. 32, p. 7843–7854

We present a study of the elastic alignment, accompanying director field distortions, and elastic pair interactions of star-shaped colloids suspended in aligned nematic liquid crystals. We design and fabricate lithographic colloids, “N-stars”, containing N rod-like protrusions (i.e. “rays” or “arms”) each having a constant angle between adjacent rays. N-star geometries contain concave...