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:
A light directing composite film includes a planar top major surface, a planar bottom major surface, a plurality of lenticular lens elements disposed between the top major surface and the bottom major surface, and a plurality of light reflection regions and light transmission regions disposed between the plurality of lenticular lens and the planar bottom major surface.
Abstract:
Tamper indicating articles that include a surface-feature image-generating layer and an adhesive layer are described. The surface-feature image-generating layer generates a visible, surface-feature-generated image upon exposure to light. The intensity of the surface-feature-generated image is reduced when taped-over. Single-image and dual- image tamper indicating articles are also described, including buried dual-image and adjacent dual-image tamper indicating articles.
Abstract:
An optical e-lement (100) is formed by co- extruding to have an arrangement of polymer scattering fibers (104) within a polymer, matrix (102) . The scattering fibers lie substantially parallel to a first axis. The scattering fibers are arranged at positions across the cross -section of the polymer matrix to scatter light transversely incident on the optical element in a direction substantially orthogonal to the first axis. The positions of the scattering fibers across the cross -section of the optical element may be selected so as to form a two-dimensional photonic crystal structure for light transversely incident on the optical element.