摘要:
The present disclosure relates to a method of storing data in a polymer. The data comprises a sequence of bits and the method comprises the steps of receiving (301) a sequence of bits to be stored and providing (302) a group of different homo-bifunctional monomers. Each homo-bifunctional monomer comprises a core structure having identical functional groups attached at two different positions of the core structure. The group of different homo-bifunctional monomers comprises homo-bifunctional monomers having at least two different core structures. The method further comprises linking (305) the different homo-bifunctional monomers together to form said polymer so that the sequence of monomer core structures represents said sequence of bits to be stored. The different homo-bifunctional monomers are linked together using a click chemistry reaction between the functional groups of the different homo-bifunctional monomers. The present disclosure further relates to a synthesis system for performing the method.
摘要:
The present invention concerns a photopolymer formulation comprising specific aromatic glycol ethers as writing monomers, matrix polymers and a photoinitiator. Other subjects of the invention are an unexposed holographic medium obtainable using a photopolymer formulation of the invention, and an exposed holographic medium obtainable by exposing a hologram into an unexposed holographic medium of the invention. Subjects of the invention likewise are an optical display comprising an exposed holographic medium of the invention, the use of an exposed holographic medium of the invention for fabricating chip cards, identity documents, 3D images, product protection labels, tags, banknotes or elements with holographic optical properties, and also specific aromatic glycol ethers.
摘要:
The invention relates to a novel photopolymer formulation comprising matrix polymers, a writing monomer, and a photoinitiator, said formulation additionally comprising a compound of the formula (I) in which A 1 , A 2 , A 3 A3 are each independently of one another hydrogen, fluorine, chlorine, bromine, or iodine, R 1 , R 2 , R 3 , R 4 , R 5 R5 are each independently of one another hydrogen, halogen, cyano, nitro, amino, alkylimino, azido, isonitrile, enamino, formyl, acyl, carboxyl, carbon ester, carbon amide, orthoester, sulfonate, phosphate, organo sulfonyl, organo sulfoxidyl, optionally fluorinated alkoxy or an optionally substituted aromatic, heteroaromatic, aliphatic, aryl aliphatic, olefinic, or acetylenic group, and suitable groups can be connected to one another via a bridge of any substitution, or two or more compounds of the formula (I) can be connected via at least one of the groups R 1 , R 2 , R 3 , R 4 , R 5 , wherein the groups can then be a di-quadrafunctional bridge with the proviso that at least one of the groups R 1 , R 2 , R 3 , R 4 , R 5 is not hydrogen. The invention further relates to a photopolymer comprising matrix polymers, a writing monomer, a photoinitiator, a holographic medium which contains a photopolymer formulation according to the invention or which can be obtained using said formulation, to the use of a photopolymer formulation according to the invention in order to produce a holographic medium, and to a method for producing a holographic medium using a photopolymer formulation according to the invention.
摘要:
In accordance with one aspect of the present invention, a method for recording holographic data in an optical data storage medium 200 is provided. The method includes (i) providing an optical data storage medium 200 including: (a) a thermoplastic polymer matrix, (b) a latent acid generator, (c) a non-linear sensitizer, and (d) a reactant including a latent chromophore. The method further includes (ii) irradiating a volume element of the optical data storage medium 200 with an interference pattern, said interference pattern including an incident radiation having a wavelength and an intensity sufficient to cause upper triplet energy transfer from the non-linear sensitizer to the latent acid generator, thereby generating an acid, wherein the latent acid generator is substantially non-responsive to said incident radiation. The method furthermore includes (iii) reacting at least one protected chromophore with the acid generated to form at least one chromophore, thereby causing a refractive index change within the volume element; and (iv) producing within the irradiated volume element refractive index variations corresponding to the interference pattern, thereby producing an optically readable datum. An optical data storage medium 200 is also provided.