摘要:
This invention relates to a birefringent layer, wherein the direction of the optical axis varies along the thickness direction of the layer, comprising I) (i) a liquid crystal monomer or pre-polymer having polymerisable groups; and (ii) a monomer or oligomer or polymer having photo-orientable groups, and/or (iii) a liquid crystal monomer or pre-polymer, oligomer or polymer having photo-orientable and polymerisable groups, and (iv) and optionally further components, or II) (v) a liquid crystal monomer or pre-polymer, oligomer or polymer having photo-orientable and polymerisable groups, and (vi) and optionally further components, in addition, this invention relates to a method for the preparation of the birefringent layer, its uses and optical components thereof.
摘要:
This invention relates to a birefringent layer, wherein the direction of the optical axis varies along the thickness direction of the layer, comprisingI) (i) a liquid crystal monomer or pre-polymer having polymerisable groups; and (ii) a monomer or oligomer or polymer having photo-orientable groups, and/or (iii) a liquid crystal monomer or pre-polymer, oligomer or polymer having photo-orientable and polymerisable groups, and (iv) and optionally further components, or II) (v) a liquid crystal monomer or pre-polymer, oligomer or polymer having photo-orientable and polymerisable groups, and (vi) and optionally further components, in addition, this invention relates to a method for the preparation of the birefringent layer, its uses and optical components thereof.
摘要:
Sub-micron-structured (nanostructured) polymer film or coatings are made by coating a substrate with a mixture of materials. One of the materials is removed using a selective solvent, leaving pores or other nanostructure. The substrate may be grooved, providing a competing nanostructure. The coating may act as an antireflective coating, optical retarder, optical diffuser, or orientation layer.
摘要:
Sub-micron-structured (nanostructured) polymer film or coatings are made by coating a substrate with a mixture of materials. One of the materials is removed using a selective solvent, leaving pores or other nanostructure. The substrate may be grooved, providing a competing nanostructure. The coating may act as an antireflective coating, optical retarder, optical diffuser, or orientation layer.
摘要:
Sub-micron-structured (nanostructured) polymer film or coatings are made by coating a substrate with a mixture of materials. One of the materials is removed using a selective solvent, leaving pores or other nanostructure. The substrate may be grooved, providing a competing nanostructure. The coating may act as an antireflective coating, optical retarder, optical diffuser, or orientation layer.
摘要:
In one embodiment, the invention relates to compounds of the formula (I) wherein G1 and G2 independently represent a polymerizable mesogenic residue, and X, Sp, and Q are as defined herein. The compounds of the invention may, for example, be useful as curable liquid crystals and for preparing liquid crystal films.
摘要:
A compound of formula (I): wherein MG1 and MG3 each independently represent an optionally-substituted aliphatic group with 1 to 80 C-atoms, in which one or more C-atoms may be replaced by a heteroatom, in such a way that oxygen atoms are not linked to one another; or an optionally-substituted aromatic or non-aromatic carbocyclic or heterocyclic ring system, with 1 to 80 C-atoms; and MG2 represents a group comprising at least two and up to four optionally-substituted aromatic or non-aromatic carbocyclic or heterocyclic ring systems, with 1 to 80 C-atoms, wherein, when MG2 represents a group comprising four optionally-substituted ring systems, at least three of the ring systems are aligned in between B1 and B2. The groups MG1, MG2 and MG3 in these new “staircase molecules” may be selected so that each one has one or more of the properties which are required in an LCP material prepared by polymerizing the compound.
摘要:
Compounds for use in the preparation of polymerizable liquid crystalline mixtures, liquid crystalline polymers and optical devices prepared from such mixtures and polymers. The compounds include novel compounds comprising an organosiloxane portion and a portion having a structure that is compatible with a mesogenic molecular architecture.
摘要:
Compounds of formula I: wherein the variables are defined as explained in the disclosure. The invention also provides liquid crystalline mixtures and optical or electro-optical devices including compounds of formula (I).
摘要:
The present invention relates to a method for producing an electromechanical, for example piezoelectric, transducer, comprising the steps of: A) applying a monolayer of spacer elements (3) onto a first polymer layer (1), the spacer elements (3) having essentially the same height (h), B) applying a second polymer layer (2) onto the spacer elements (3) of the monolayer so that there is at least one cavity (4) between the first polymer layer (1) and the second polymer layer (2), and C) fixing the spacer elements (3) between the first (1) and second (2) polymer layers.