This paper describes a no-bias-bend (NBB) π cell based on a homeotropic polyimide layer with a midrange pretilt angle produced using the nonrubbing ion-beam (IB) method. Various pretilt angles in the range 1-89° were easily achieved depending on the IB exposure time. A chemical structure analysis confirmed that preferential reorientation of the carbon network was created by selectively breaking the weakest π bonds of the CO double bonds. The threshold voltage and favorable response time of the NBB π cell without an initial critical voltage were 0.7 V and 6.6 ms.
All Science Journal Classification (ASJC) codes
- Chemical Engineering(all)
- Materials Science(all)
- Physical and Theoretical Chemistry
- Electrical and Electronic Engineering