An apparatus for determining a characteristic of a photoluminescent (PL) layer comprises: a light source that generates an excitation light that includes light from the visible or near-visible spectrum; an optical assembly configured to direct the excitation light onto a PL layer; a detector that is configured to receive a PL emission generated by the PL layer in response to the excitation light interacting with the PL layer and generate a signal based on the PL emission; and a computing device coupled to the detector and configured to receive the signal from the detector and determine a characteristic of the PL layer based on the signal.

A display device includes a window, a display panel arranged below the window and including a display area and a peripheral area outside the display area; and a component arranged below the display panel and at least partially overlapping the peripheral area, wherein a black matrix is arranged on a bottom surface of the window in correspondence with an area in the peripheral area other than an area where the component is located.

Disclosed is a display device, a manufacturing method thereof and a display apparatus. The display device includes a carrier having a first surface and a second surface opposite to each other, and at least one nanotube in the carrier. Each nanotube includes a tube wall and a receiving cavity surrounded by the tube wall. The receiving cavity includes a first open end at the first surface and a second open end at the second surface. The display device further includes a first electrode at the first open end, a second electrode at the second open end and a light-emitting layer between the first electrode and the second electrode.

We disclose herein a hetero-structure comprising: a curved material; at least one layer of a first material rolled around the curved material; at least one intermediate layer rolled on the at least one layer of the first material; and at least one layer of a second material rolled around the at least one intermediate layer.

A mask cleaning apparatus and method of using the same includes a preheating zone preheating a mask, a first ultraviolet cleaning zone irradiating the mask with a first ultraviolet laser beam at a first irradiation angle, a first cooling zone cooling the mask irradiated with the first ultraviolet laser beam, a second ultraviolet cleaning zone irradiating the mask with a second ultraviolet laser beam at a second irradiation angle, a second cooling zone cooling the mask irradiated with the second ultraviolet laser beam, an infrared cleaning zone irradiating the mask with an infrared laser beam at a third irradiation angle, and a peeling zone spraying air onto the mask irradiated with the infrared laser beam.

Wire-shaped perovskite devices and methods for manufacturing the same are provided. The perovskite devices have a uniform layer thickness of perovskite material on wire-shaped substrates of semi-conductor or carbon material. The method includes an electro-coating process, which advantageously allows for predictability and repeatability.

An apparatus for determining a characteristic of a photoluminescent (PL) layer comprises: a light source that generates an excitation light that includes light from the visible or near-visible spectrum; an optical assembly configured to direct the excitation light onto a PL layer; a detector that is configured to receive a PL emission generated by the PL layer in response to the excitation light interacting with the PL layer and generate a signal based on the PL emission; and a computing device coupled to the detector and configured to receive the signal from the detector and determine a characteristic of the PL layer based on the signal.

Disclosed is a fiber-type organic light-emitting display panel including multiple element fibers extending in a first direction; and multiple wire fibers extending in a second direction, the multiple wire fibers being woven with the multiple element fibers, wherein each element fiber includes a core fiber, a light-emitting element and a driving element mounted on the core fiber, a first contact pad disposed in an area adjacent to the light-emitting element so as to electrically connect a first electrode layer of the light-emitting element and a first wire fiber, a second contact pad disposed in an area adjacent to the driving element so as to electrically connect a first electrode of the driving element and a second wire fiber, and a third contact pad disposed in an area adjacent to the driving element so as to electrically connect a second electrode of the driving element and a third wire fiber.

An apparatus for determining a characteristic of a photoluminescent (PL) layer comprises: a light source that generates an excitation light that includes light from the visible or near-visible spectrum; an optical assembly configured to direct the excitation light onto a PL layer; a detector that is configured to receive a PL emission generated by the PL layer in response to the excitation light interacting with the PL layer and generate a signal based on the PL emission; and a computing device coupled to the detector and configured to receive the signal from the detector and determine a characteristic of the PL layer based on the signal.

Disclosed herein is a composition and a method for energy harvesting and the autonomous detection of structural failure. This method can be used to monitor, for example, the structural integrity of unmanned aircraft systems.