Abstract:
A method of ink-extrusion printing an object, including providing a mixture including liquid crystal monomers and photo-catalyzing or heating the mixture to produce a liquid crystal ink. The ink is in a nematic phase. The method includes extruding the ink through a print-head orifice moving along a print direction to form an extruded film of the object. The extruded film exhibits birefringence. Also disclosed are a liquid crystal ink. The ink includes a mixture including liquid crystal monomers. The mixture when at a target printing temperature is in a nematic phase. Also disclosed is ink-extrusion-printed object. The object includes an extrusion-printed film including a nematic liquid crystal elastomer, wherein the film exhibits birefringence along an extrusion axis of the film.
Abstract:
The invention relates to an electrically controlled interference colour filter comprising at least two transparent electrodes, at least one nematic liquid crystal layer and alignment layers for alignment of the liquid crystals. When an electrical field is applied the liquid crystals can be realigned and thus the transmission wavelength range of the interference colour filter can be shifted.
Abstract:
In a process for the purification of a liquid-crystal mixture (7), the liquid-crystal mixture (7) is passed through a first electrodialysis cell (2) and a concentrate solution (14) is passed through a second electrodialysis cell (8) which is adjacent to the first electrodialysis cell (2) and is separated by an ion-exchanger membrane (9), and an electric field transverse to a direction of passage of the liquid-crystal mixture (7) through the first electrodialysis cell (2) is generated with the aid of an anode/cathode arrangement (15, 16) arranged outside the electrodialysis cells (2, 8) so that ionised constituents of the liquid-crystal mixture (7) are discharged at the ion-exchanger membrane (9) and removed from the liquid-crystal mixture (7).
Abstract:
Provided are methods for recycling liquid crystal comprising: receiving at least one liquid crystal mixture; and forming a reformulated liquid crystal mixture using at least one portion of the at least one liquid crystal mixture. Also provided are reformulated liquid crystal mixtures comprising at least one recycled liquid crystal mixture and liquid crystals displays devices having one or more reformulated liquid crystal mixtures.
Abstract:
Disclosed is a photopolymerizable composition which contains a photopolymerization initiator (A) that has a partial structure represented by the following Formula (1) and a polymerizable compound (B). In General formula (1), R3 and R4 each independently represents a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, a heteroaryl group or an alkoxy group; R3 and R4 may form a ring with each other; and X represents OR5, SR6, or NR17R18. The photopolymerizable composition is capable of forming a cured film that has high sensitivity, excellent intra-membrane curability and excellent adhesion to a support. The cured film is able to maintain a patterned shape even during post-heating after development and has good pattern formability, while coloring due to heating with passage of time being suppressed.
Abstract:
Provided is twisted-alignment-mode liquid crystal display wherein frame-like light leakage can be reduced. The twisted-alignment-mode liquid crystal display comprises a pair of polarizers disposed so that the polarization axes are orthogonal to each other; a twisted-alignment-mode liquid crystal cell disposed between the polarizers; and a low-substitution layer comprising cellulose acylate satisfying 2.0
Abstract:
Disclosed is a polymer film excellent in performance of inducing Rth. The polymer film comprises at least one species of a compound represented by the formula (I) and a compound represented by the formula (I′):
Abstract:
Disclosed is a photopolymerizable composition which contains a photopolymerization initiator (A) that has a partial structure represented by the following Formula (1) and a polymerizable compound (B). In General formula (1), R3 and R4 each independently represents a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, a heteroaryl group or an alkoxy group; R3 and R4 may form a ring with each other; and X represents OR5, SR6, or NR17R18. The photopolymerizable composition is capable of forming a cured film that has high sensitivity, excellent intra-membrane curability and excellent adhesion to a support. The cured film is able to maintain a patterned shape even during post-heating after development and has good pattern formability, while coloring due to heating with passage of time being suppressed.
Abstract:
Liquid crystal compositions comprising compounds including at least one mesogenic substructure and at least one long flexible segment and a compound selected from a photochromic compound, a dichroic compound and a photochromic-dichroic compound and methods of synthesizing the same and their use in articles of manufacture and ophthalmic devices are disclosed.
Abstract:
Compounds including at least one mesogenic substructure and at least one long flexible segment and methods of synthesizing the same are disclosed. Formulations which include various embodiments of the mesogen containing compounds and their use in articles of manufacture and ophthalmic devices are also disclosed.