e/Fréedericksz transition

Information
has gloss	eng: The Fréedericksz transition is a phase transition in liquid crystals produced when a sufficiently strong electric or magnetic field is applied to a liquid crystal in an undistorted state. Below a certain field threshold the director remains undistorted. As the field value is gradually increased from this threshold the director gradually twists until its aligned with the field. In this fashion the Fréedericksz transition can occur in three different configurations known as the twist, bend, and splay geometries. The phase transition was first observed by Fréedericksz and Repiewa in 1927. In this first experiment of theirs, one of the walls of the cell was concave so as to produce a variation in thickness along the cell.
lexicalization	eng: Fréedericksz transition
instance of	(noun) a liquid exhibiting properties of a crystal that are not shown by ordinary liquids liquid crystal

Media
media:img	TwistGeometry.jpg