The double-layer penetration electrode structure is proposed to obtain the low-operating voltage blue-phase liquid crystal display (BPLCD) with single electro-optic curve for red-green-blue (RGB) colours in every pixel, which is more suitable for the field-sequential-colour display. The different influences of electrode’s parameters and driving methods on the electro-optical properties of the proposed BPLCD are investigated. The results demonstrate that the operating voltage can be reduced from 53.80 V to 23.00 V for red colour. Besides, the coincident voltage-dependent transmittance curves for RGB colours are obtained by adjusting the applied voltage of sub-electrode. Thus, RGB lights can pass through every pixel with single electro-optic curve, which is good for resolution enhancement and single gamma driving. Besides, the maximum gamma shift of the proposed BPLCD is less than 0.1099 at 60° polar angle for the red colour, and the gamma shift difference between red and blue colours is only 0.0542...

Single electro-optic curve for RGB colours in blue-phase liquid crystal display

Bile acids are physiologically important metabolites, which are synthesized in liver as the end products of cholesterol metabolism and then secreted into intestine. They are amphiphilic molecules which play a critical role in the digestion and absorption of fats and fat-soluble vitamins through emulsification. The concentration of bile acids is an indicator for liver function. Individual suffering from liver diseases has a sharp increase in bile acid concentrations. Hence, the concentration level of bile acids has long been used as a biomarker for the early diagnosis of intestinal and liver diseases. Conventional methods of bile acid detection such as chromatography-mass spectrometry and enzymatic reactions are complex and expensive. It is highly desired to have a simple, fast, and low-cost detection of bile acids that is available for self-testing or point-of-care testing. To achieve this goal, we develop a liquid crystal-based biosensor for the detection of bile acids. The sensor platform is based on the anchoring transition of liquid crystals (LCs) at the sodium dodecyl sulfate (SDS)-laden LC/aqueous interface for the detection of bile acids in aqueous solution. The first part of this dissertation focuses on the detection mechanism of bile acids. Our studies show that the displacement of SDS from the LC/aqueous interface by the competitive adsorption of bile acids induces a homeotropic-to-planar anchoring transition of the LC at the interface, providing an optical signature for the simple and rapid detection of bile acids. The adsorption of bile acids on the interface was found to follow Langmuir-Freundlich isotherm. The adsorption kinetics of different bile acids is compared. We find that both the number and position

/pdf/liquid-crystal-based-biosensors-for-the-detection-of-bile-2puw87n8sv.pdf

Liquid Crystal-Based Biosensors for the Detection of Bile Acids

/pdf/vertical-field-switching-blue-phase-liquid-crystals-for-5erys2r1xn.pdf

Vertical Field Switching Blue Phase Liquid Crystals For Field Sequential Color Displays

Color sequential transmissive and reflective projection displays using a vertical field switching (VFS) polymer-stabilized blue phase liquid crystal (BPLC) are proposed. The VFS-BPLC exhibits submillisecond response time which is useful for suppressing color breakup, hysteresis-free for accurate grayscale control, high optical efficiency, and low operation voltage.

67.4: Submillisecond‐response Blue‐phase Liquid Crystal for Color Sequential Projection Displays

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67.4: Submillisecond‐response Blue‐phase Liquid Crystal for Color Sequential Projection Displays