Template Effect of Multi-Phase Liquid Crystals

Abstract

The template effects on stability of twist structure liquid crystals (LCs) were investigated. By refilling a cholesteric LC (CLC) of different pitch into a blue phase LC (BPLC) template or a sphere phase LC (SPLC) template, a multi-phase and multi-pitch twist structure LC, which includes the refilling CLC and intrinsic template BPLC or SPLC, can be fabricated. By refilling a CLC of different chiral pitch into a CLC template, a multi-pitch CLC that includes the refilling CLC and intrinsic CLC, can be fabricated. Twist structure LC devices with multi-phase and multi-pitch show great potential for applications in optical communication, displays, and LC lasing.

Templated Twist Structure Liquid Crystals and Photonic Applications

“…Whereas the research on multi-wavelength templated-BPLC filters has a potential application in narrow band-gap filters, the design of multi-layer structure was a complication to fabrication process. Therefore, a multi-wavelength templated-BPLC filter with single-layer was proposed, which has advantages of both narrow band-gap filtering characteristic and singlelayer structure [82]. In this study, the template effects on the stability of TSLCs were investigated, and a multi-wavelength and a multi-phase TSLC filter would be obtained if refilling a CLC with different pitches into the BPLC template or SPLC template.…”

High-Reflective Templated Cholesteric Liquid Crystal Filters

“…In our previous work, a multi-phase or multi-pitch twist structure LC can be fabricated by the wash out-refilling process [28]. Therefore, in this study, we have considered that the multi-chiral CLC filters with high reflectivity can be obtained by the wash out-refilling process.…”

“…Compared with the approaches mentioned above, the preparation process of fabricated CLC filters is simple and applicable to large-scale application. According to our previous study where the effect of multi-phase liquid crystals was investigated [28], the multi-phase liquid crystal filters with high reflectivity are demonstrated in this paper. By refilling a CLC with left-handedness into a blue phase liquid crystal (BPLC) template with right-handedness, a multi-chiral BPLC filter with a single layer was fabricated.…”

A blue phase liquid crystal film based on an interpenetrating network and its sensitive humidity response performance

“…32 However, due to the special structure of BPLCSs, their chemical composition and composition ratio are greatly limited, and usually exist in a narrow temperature range. 17,28,[33][34][35] For example, polymer networks, 36 nanoparticles 23 or curved core molecules 37 may be used to stabilize their own morphology, which greatly affects the fabrication of blue-phase liquid-crystal stimulus response devices. At present, the response of blue-phase liquid crystal materials to humidity stimulation is relatively simple, which limits the application of blue-phase liquid crystal polymers.…”