Liquid crystals could help deflect laser pointer attacks on aircraft

Optics.org  April 2, 2019 Researchers at Lewis University, Illinois, focused on the polarization and absorbance properties of liquid crystal materials to block incoming laser light. To decrease the intensity of incoming laser light, the liquid crystal N-(4-Methoxybenzylidene)-4-butylaniline was deposited between two pieces of conductive indium tin oxide-coated glass. The test cell can decrease up to 80 percent of incoming laser light by transitioning from its transparent, liquid phase to its opaque, pseudo-crystalline phase, with the cell being able to return to its transparent phase in less than three seconds. The phase change is controlled by an electric current applied to […]