University of Warwick scientists have shown how to tie knots
in liquid crystals using a miniature Möbius strip made from silica particles.
By tying substances like this in knots, the researchers hope
to understand how their intricate configurations and unique properties can be
harnessed in the next generation of advanced materials and photonic devices.
Liquid crystal is an essential material in modern life – the
flat panel displays on our computers, TVs and smartphones all make use of its
light-modulating properties.
It is composed of long, thin, rod-like molecules which align
themselves so they all point in the same direction. By controlling the
alignment of these molecules, scientists can literally tie them in a knot.