PSLCs Film and PSLC Glass
Liquid crystal Switchable film can generally be divided into two types: polymer stabilized liquid crystals (Polymer Stabilized Liquid Crystals, PSLCs) and polymer dispersed liquid crystals (Polymer Dispersed Liquid Crystals, PDLCs).
In the former, due to the pre-alignment of the substrate, the liquid crystal molecules form a highly ordered spatial arrangement in the initial state, so the liquid crystal film can be in a transparent state without external stimulation; and because the polymer network content in the PSLCs system is low, it is different from the traditional Compared with PDLCs, it has better transparent state and lower driving voltage.
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- Smart glass on opaque state
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- Smart glass off clear state
PSLC smart film
According to the different response modes, PSLCs light-adjustable films can be divided into several categories, such as electric field control, temperature control and light control.
Among them, the electronically controlled dimming film mainly relies on the dielectric response behavior of liquid crystals, so its liquid crystal components are flexible, and dimming films mainly composed of nematic liquid crystals, cholesteric liquid crystals or smectic liquid crystals can be used under certain conditions. Realize the control of light transmittance.
The temperature control or light control is mainly realized by the phase change of the liquid crystal when the temperature rises and the doping of some temperature-responsive or light-responsive chiral molecules that can be isomerized. The change of the optical properties of the liquid crystal before and after the phase transition And the difference in chirality of temperature-responsive or light-responsive molecules in different structures achieves the purpose of adjusting the arrangement of liquid crystal molecules, thereby realizing the change of the optical properties of the liquid crystal film.
Compared with smart films based on polymer-dispersed liquid crystals, the polymer-stabilized liquid crystal system responds more flexibly to conditions, and its optical properties are constantly improving, with a wider range of applications. However, the adhesion between the liquid crystal layer and the substrate, the durability of the film, and the environmental stability need to be further improved. In addition, due to the actual needs of energy saving and environmental protection, the research focus of polymer-stabilized liquid crystal smart films will be further expanded to temperature control, light control, and electric field-temperature multiple regulation.
