Abstract:
A security device for the identification or authentication of valuable goods is described, including a thin material layer (22, 26) presenting a stochastic pattern including micro/submicrostructures, where the latter are arranged in blobs (2) each of which presents a complexity factor Cx = L 2 4 π · A , where L is the perimeter of the blob and A its area, and wherein blobs having a Cx value greater than or equal to 2 cover at least 5%, preferably at least 15%, of the device surface. According to a preferred embodiment, the material layer may include a film including at least a first and a second polymers arranged respectively within a first and a second phases defining the micro/submicrostructures. Preferred processes of fabrication are also disclosed, as well as a method for securing a valuable good based on such a security device.
Abstract translation:描述了用于识别或认证有价值物品的安全装置,包括呈现包括微/亚微结构的随机图案的薄材料层(22,26),其中后者被布置成斑点(2),每一个呈现复杂因素 Cx = L 24π·A,其中L是斑点的周长,A是其面积,并且其中具有大于或等于2的Cx值的斑点覆盖至少5%,优选至少15% 设备表面。 根据优选实施方案,材料层可以包括至少包括分别在限定微/亚微结构的第一和第二相中排列的第一和第二聚合物的膜。 还公开了优选的制造方法,以及用于基于这种安全装置来保护有价值物品的方法。
Abstract:
The invention relates to a method for producing special supramolecular assemblies of colorants, in particular cyanine dyes, called J aggregates. The inventive method consists in depositing a monolayer of dendrimers on a support and subsequently in deposing cyanines in solution for forming the organised monolayer of J aggregates. Said method can be used for producing a secondary light source (28) for injecting light into a waveguide (24) from a light energy received from a primary light source (30) emitting at different wavelength. The secondary source, which consists of the J aggregates incorporating energy acceptors, can be also integrated into an optical device (23) incorporating the waveguide.
Abstract:
A security device for the identification or authentication of valuable goods is described, including a thin material layer (22, 26) presenting a stochastic pattern including micro/submicrostructures, where the latter are arranged in blobs (2) each of which presents a complexity factor Cx = L 2 4 π · A , where L is the perimeter of the blob and A its area, and wherein blobs having a Cx value greater than or equal to 2 cover at least 5%, preferably at least 15%, of the device surface. According to a preferred embodiment, the material layer may include a film including at least a first and a second polymers arranged respectively within a first and a second phases defining the micro/submicrostructures. Preferred processes of fabrication are also disclosed, as well as a method for securing a valuable good based on such a security device.
Abstract translation:描述了用于识别或认证有价值商品的安全装置,包括呈现包括微/亚微结构的随机图案的薄材料层(22,26),其中后者被布置成斑点(2),每一个呈现复杂因素 Cx = L 2 4&pgr; ·A,其中L是斑点的周长和A的面积,并且其中具有大于或等于2的Cx值的斑点覆盖器件表面的至少5%,优选至少15%。 根据优选实施方案,材料层可以包括至少包括分别在限定微/亚微结构的第一和第二相中排列的第一和第二聚合物的膜。 还公开了优选的制造方法,以及用于基于这种安全装置来保护有价值物品的方法。
Abstract:
The present invention relates to the realization of particular supramolecular assemblies of dyes, in particular cyanines, called J aggregates. The invention concerns an assembly made up of a support including a mesoporous layer whereof the pores have an average BET diameter greater than 1.5 nm, macromolecules with dendritic architecture functionalizing said layer, at least in its pores, a layer of molecules from the family of cyanines interacting with the macromolecules with dendritic architecture and organized into J aggregates.
Abstract:
A security device for the identification or authentication of goods is described. It comprises a stochastic pattern comprising structures having an average lateral structure size d and arranged such that an image of at least a part of the security device, when treated through 2D Fourier transformation and calculation of a corresponding Power Spectrum Density, may lead to a peak, in a spatial-frequency domain, having a position in this domain correlated to d and a size distribution value w which, when inverted, is correlated to a size distribution of the structures. The value w according to the invention is smaller than 2/d, so that when directing a coherent light beam on at least part of the structures a ring-shaped scattering speckle pattern is formed, on the basis of which d and w may be calculated to implement identification or authentication of the device.
Abstract:
The present invention relates to an isotropic zero-order diffractive colour filter, to a method to manufacture an embossing tool and to a method to manufacture such a filter.The zero-order diffractive colour filter comprises diffractive microstructures and a wave-guiding layer, wherein the diffractive microstructures possess a short range ordering over at least four times the period of the microstructures, and the diffractive microstructures possess a long range disordering over length scales of more than 100 μm.
Abstract:
The invention relates to a composition containing n polymers (P1, P2, . . . Pn) with 10≧n≧2 dissolved in a common solvent (Sc) which is liquid at room temperature and at atmospheric pressure, the polymers (P1, P2, . . . Pn) and the common solvent (Sc) being chosen so as to form distinct domains, each containing a single polymer after applying the composition to a human keratin material substrate and subsequently removing the common solvent (Sc). Variations thereof.
Abstract translation:本发明涉及含有n =n≥1的n个聚合物(P 1,P 2,...,P n)的组合物, 2溶解在室温和大气压下为液体的普通溶剂(S SUB C C)中,聚合物(P 1,P 2, ,...)和普通溶剂(S),以便形成不同的结构域,每个在将组合物施用于人后含有单一聚合物 角蛋白材料底物,随后除去常见溶剂(S)。 其变化。