Together with the laboratory of device integrated responsive materials (DIRM) in Guangzhou, China, we are developing new smart windows principles.
Light-driven electrohydrodynamic instabilities in liquid crystals
We present here a new mechanism to initiate electrohydrodynamic instabilities (EHD) by light. In the absence of light, EHDI does not occur. Our innovation is that it adds neutral molecules that form ions upon light exposure.
We demonstrate that the photo-ionic electrohydrodynamic instabilities can be used for light regulation. Local exposure, either to drive the electrohydrodynamics or to remove them enables the formation of colored images. We proposed the practical applications in writing, storing and erasing for information displays or smart windows.
Researcher: Yuanyuan Zhan (PhD candidate)
Yuanyuan Zhan, Albertus P.H.J. Schenning, Dirk J. Broer, Guofu Zhou* and Danqing Liu*, Light-driven electrohydrodynamic instabilities in liquid crystals, Advanced Functional Materials 2018, 28, 1707436