At least one microneedle comprises a hydrogel material that includes a substance that fluoresces when the substance interacts with an analyte. A magnitude of the fluorescence varies as a function of the concentration of the analyte. During use, the hydrogel material is illuminated with illumination light in a first wavelength range while the hydrogel material interfaces with the dermal interstitial fluid layer of a subject, and a photosensor generates an output that corresponds to an amount of light received in a second wavelength range.

Examples disclosed herein relate to a finishing system for a three-dimensional (3D) printed part. Example systems include a sensor to detect a marking on a portion of the 3D printed part. A post-processing component of the system may perform a finishing operation on the portion of the 3D printed part while the marking is detected on the 3D printed part.

The invention provides a method for identifying plastics and/or the additives therein, wherein at least some of the plastic material is irradiated with light of at least one wavelength, at least some of the light reflected by the plastic material is detected and analyzed, and the plastic material and/or the additive therein is/are identified on the basis of the result of the analysis. The disclosed method utilizes a fluorescence decay time constant of the intrinsic fluorescence of the plastic material and, if applicable, of the additive(s) therein, which is determined on the basis of the detected light, and the plastic material and/or the additive(s) therein is/are identified on the basis of the determined fluorescence decay time constant.

Phosphor elements comprising phosphors in a host material having a phosphorescence-emitting surface with surface nanostructures are disclosed. Phosphor wheels having such phosphor elements, methods of making such phosphor elements, and methods of using such phosphor elements are also disclosed.

The invention pertains to the use of sophisticated chemical formulation and spectroscopic design methods to select taggants compatible with the 3D print medium that are easily detected spectroscopically but otherwise compatible with the product, structural integrity and stability, and aesthetics. A spectral pattern employs a different chemical or combination of chemicals to alter the formulation of all or some portion of the printed object so that its authenticity can be monitored later using a spectrometer.

The present invention relates to a material for preparing an intraocular lens. In particular, it relates to an ophthalmic medical material suitable for manufacture of micro-incision intraocular lens, having suitable water content and a suitable refractive index.

Phosphor elements comprising phosphors in a host material having a phosphorescence-emitting surface with surface nanostructures are disclosed. Phosphor wheels having such phosphor elements, methods of making such phosphor elements, and methods of using such phosphor elements are also disclosed.

Disclosed herein are technologies related to film-insert molding (FIM) with deposited light-generating sources, such as printed light-emitting diodes. This Abstract is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.

A Free-form contact lens and method of making the same. The lens includes a posterior optical quality surface having a concave shape, an opposing anterior surface having a convex shape both of which join at a lens edge that defines an outer periphery of the contact lens, and at least a first lens feature having a predetermined shape and made of a first polymerized Reactive Mixture. The remainder of the lens is made of a second polymerized Reactive Mixture that is different than the first polymerized Reactive Mixture, and that is covalently bonded thereto.

A method for making an object (e.g., a projectile) includes preparing a premixture of a first metal powder having a first particle size, a second metal powder having a second particle size, and a polymer binder; compressing the premixture in a mold at a pressure of about 75 psi to about 500 psi and a temperature of about 15 C. to about 40 C. to form a projectile preform; and heating the projectile preform at a temperature of about 80 C. to about 350 C. for about 0.5 minutes to about 30 minutes. The polymer binder may include a dry powder coat. The object may have a density between 1 and 4 g/cm.sup.3.