Flexoelectro-optic device

Thus, the response time of a flexoelectro-optic device does not depend on the history of switching or on the final state, in contrast to conventional nematic devices. This means that there is only one time constant involved, regardless of whether the switching occurs between grey levels or between... 

The linear electro-optic effect in a cholesteric, i.e. a hard-twisted chiral nematic (the helical pitch must be less than the wavelength of visible light) was a very original proposal for using the flexoelectric effect in a new display, shutter or modulator device. The patent application by R.B. Meyer and J.S. Patel dates from 1987 and was granted in 1990. The physics was developed in a series of papers by these authors and later elaborated by others.It is now commonly called the flexoelectro-optic effect. 

---