Abstract:
The disclosure provides microstructured articles and methods useful for detecting an analyte in a sample. The articles include microwell arrays. The articles can be used with an optical system component in methods to detect or characterize an analyte
Abstract:
The disclosure provides microstructured articles and methods useful for detecting an analyte in a sample. The articles include microwell arrays. The articles can be used with an optical system component in methods to detect or characterize an analyte
Abstract:
Retroreflective articles and methods of making the same, wherein the retroreflective articles ( 10 ) include composite cube-corner elements ( 12 ) having a first light transmissive polymeric layer ( 30 ), a second light transmissive polymeric layer ( 32 ), and an interface therebetween, wherein the first light transmissive polymeric layer has a first index of refraction, the second light transmissive polymeric layer has a second index of refraction, and the first and second indices of refraction have an absolute difference of at least 0.0002.
Abstract:
Retroreflective sheeting having a structured layer of cube corner elements and an at least one optically variable mark therein, and methods of making same.
Abstract:
A method of forming a working mold including placing a substrate near an electrode in a chamber, the substrate (610) having at least a first structured surface (620); providing power to the electrode to create a plasma,- introducing vapor of liquid silicone molecules into the plasma; and depositing a release layer (630), the release layer (630) including a silicone containing polymer, the release layer (630) being deposited on at least a portion of the first structured surface of the substrate to form the working mold.
Abstract:
Methods of forming composite optical film (100) are disclosed. The methods include exposing a composite film to a first energy source (340) to cure the composite film to (321) a first cure state. The composite film includes reinforcing (102) fibers dispersed within a curable resin (104). Then the method includes removing the first energy source from the first cure state composite film and then exposing the first cure state composite film to a second energy source (341) to further cure the composite film to a second cure state. The method includes 10 combining the composite film with an optical element to from the composite optical film.
Abstract:
Methods for making differentially pattern cured microstructured articles are disclosed, using a molding tool having a microstructured surface, a patterned irradiation to generate irradiate and non-irradiated regions in a radiation curable resin. Different combinations of molding tools and patterned irradiation provide numerous variants of differentially pattern cured microstructured articles without requiring costly modification of the molding tools.
Abstract:
Retroreflective sheeting having a structured layer of cube corner elements and an at least one optically variable mark therein, and methods of making same.
Abstract:
The present disclosure provides a light control film that is capable of transmitting light, or allowing a viewer to observe information, only within a viewing region centered around the normal (perpendicular line) to a surface. The light control film generally blocks information or light outside of this viewing region, and provides security in all directions including right-and-left and up-and-down of the film. The light control film includes a plurality of light-transmissive cavities that are surrounded by a light absorbing material, such that each of the plurality of cavities is optically isolated from adjacent cavities. Each of the light-transmissive cavities effectively block light which enters the cavity outside of a viewing (that is, cutoff) angle.