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electroconvection in an unsheared smectic film
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Video Source: www.youtube.com/watch?v=aaKwymX7pqY
A smectic liquid crystal forms a thin film, like a soap bubble. Here, we have such a film in an annular holder about 1 cm across. The variation in color comes from thickness variations. A voltage is applied between the inner and outer edge. The convection eventually produces a series of counter-rotating vortices whose speed increases as the voltage is increased. • • Movie by Peter Kruse. Video by Stephen Morris. • See http://www.physics.utoronto.ca/nonlin...
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