Embodiments described herein relate to display devices, e.g., virtual and augmented reality displays and applications. In one embodiment, a planar substrate has stepwise features formed thereon and emitter structures formed on each of the features. An encapsulating layer is disposed on the substrate and a plurality of uniform dielectric nanostructures are formed on the encapsulating layer. Virtual images generated by the apparatus disclosed herein provide for improved image clarity by reducing chromatic aberrations at an image plane.

Embodiments described herein relate to display devices, e.g., virtual and augmented reality displays and applications. In one embodiment, a planar substrate has stepwise features formed thereon and emitter structures formed on each of the features. An encapsulating layer is disposed on the substrate and a plurality of uniform dielectric nanostructures are formed on the encapsulating layer. Virtual images generated by the apparatus disclosed herein provide for improved image clarity by reducing chromatic aberrations at an image plane.

The present disclosure is related to a non-volatile thermotropic composite material comprising a first component comprising a non-aqueous and non-volatile proton donating material; a second component comprising a monomer, an oligomer or a polymer as a proton accepting material; a non-volatile polymeric matrix; and wherein the non-volatile polymeric matric, the first component and the second component are configured to maintain at least one property which is reversibly changeable based on thermal energy received by or given out from the non-volatile thermotropic composite material. Proton donating materials include ionic liquid, poly(ionic liquid) and deep eutectic salt. The proton accepting material comprises at least an ether, a phenyl ester, an amide and an acrylate functional group. Also disclosed is a method of making said composite material comprising providing the first and second components and a non-volatile polymeric matrix and curing the mixture to form the non-volatile thermotropic composite material. The non-volatile thermotropic composite material can be used in smart windows.

There are disclosed an electrically tunable metasurface and a method for modulating propagation characteristics of an incident plane wave. The electrically tunable metasurface comprising: i) a plurality of scatterer rings, each one of the plurality of scatterer rings including bow-tie radiator elements, the bow-tie radiator elements in a corresponding scatterer ring having a same geometric configuration; and ii) a plurality of electrodes, each electrode being configured to provide a biasing voltage to the corresponding scatterer ring. The method comprising: i) receiving, by an electrically tunable metasurface, the incident plane wave; and ii) modulating the propagation characteristics of the incident plane wave by providing specific biasing voltage to the corresponding scatterer rings.

Embodiments described herein relate to display devices, e.g., virtual and augmented reality displays and applications. In one embodiment, a planar substrate has stepwise features formed thereon and emitter structures formed on each of the features. An encapsulating layer is disposed on the substrate and a plurality of uniform dielectric nanostructures are formed on the encapsulating layer. Virtual images generated by the apparatus disclosed herein provide for improved image clarity by reducing chromatic aberrations at an image plane.

A meta device includes a plurality of meta structures that spaced apart from each other and reflect at least a portion of incident light, a plurality of electrodes that are spaced apart from each other, and a controller configured to control a phase shift of reflected light using a voltage applied to the plurality of electrodes.

Nanoplatelet forms of metal hydroxide and metal oxide are provided, as well as methods for preparing same. The nanoplatelets are suitable for use as fire retardants and as agents for chemical or biological decontamination.

Provided are [1] an optical laminate comprising a substrate film, a transparent conductive layer and a surface protection layer in this order, wherein an average value of a surface resistivity measured according to JIS K6911 is in the range of 1.010.sup.7 / or more and 1.010.sup.10 / or less, and a standard deviation of the surface resistivity is 5.010.sup.8 / or less, [2] an optical laminate comprising a substrate film, a transparent conductive layer and a surface protection layer in this order, wherein the substrate film is a cycloolefin polymer film, a ratio of a thickness of the substrate film to a thickness of the entire optical laminate is 80% or more and 95% or less, and a rate of elongation of the optical laminate at a temperature of 150 C., as measured using a dynamic viscoelasticity measuring apparatus under conditions of a frequency of 10 Hz, a tensile load of 50 N and a rate of temperature increase of 2 C./min, is 5.0% or more and 20% or less, and [3] an optical laminate comprising a cellulose-based substrate film, a stabilization layer and a conductive layer in this order, wherein an average value of a surface resistivity measured according to JIS K6911 is in the range of 1.010.sup.7 / or more and 1.010.sup.12 / or less, and a value obtained by dividing a standard deviation of the surface resistivity by the average value is 0.20 or less; as well as a method for producing the optical laminate, a front panel and an image display device.

Embodiments described herein relate to display devices, e.g., virtual and augmented reality displays and applications. In one embodiment, a planar substrate has stepwise features formed thereon and emitter structures formed on each of the features. An encapsulating layer is disposed on the substrate and a plurality of uniform dielectric nanostructures are formed on the encapsulating layer. Virtual images generated by the apparatus disclosed herein provide for improved image clarity by reducing chromatic aberrations at an image plane.

A sealant composition particularly suitable for a plastic substrate is disclosed. The sealant composition contains: a partially (meth)acrylated epoxy resin, a hydrophobic oligomer having a flexible hydrophobic backbone moiety and at least one functional group co-curable with the partially (meth)acrylated epoxy resin, and a latent epoxy-curing agent.