Christian Bohley graduated in Mathematics in 1991 at the University of Halle/Saale (Germany). In 2004 he obtained a PhD from the University of Neuchâtel (Switzerland). Then he worked at the University of Magdeburg (Germany) on nonlinear phenomena and since 2009 at the Centre for Innovation Competence SiLi-nano at the Martin Luther University Halle-Wittenberg.
Blue Phase II of 55% CB15 (chiral dopant) in E48 (liquid crystal) observed between crossed polarizers in a 7 micrometer thick sandwich cell . The areas of different colors are regions of different orientations of the Blue Phase II "unit cells" that have a side length of around 240 nm. The picture shows the mixture during the process of slow degeneration of the Blue Phase. Real width of the picture is about 1 x 0.7 mm. Jury comment: Liquid crystal graffiti.