Abstract: Embodiments of the present disclosure generally relate to LED pixels and methods of fabricating LED pixels. The pixel includes a plurality of sub-pixels. Each sub-pixel includes a backplane comprising a top surface, a plurality of sub-pixel isolation structures disposed over the backplane, a micro-LED disposed in the well, a color conversion material disposed over the micro-LED within a well, and a filter layer disposed over the sub-pixel isolation structures and the color conversion material. The sub-pixel isolation structures defining the well. The sub-pixel isolation structures include sidewalls and a top surface. The sidewalls are angled at an angle from the top surface of the backplane to the top surface of the sub-pixel isolation structures.

Abstract: Disclosed in the present application are a concrete protection material, and a preparation method and a construction method therefor. The concrete protection material consists of 50%-90% of a component A and 10%-50% of a component B in percentage by weight, where the component A is prepared from 30%-65% of organic silicon, 2%-5% of nano-silicon dioxide and the balance of an organic solvent in percentage by weight; and the component B is prepared from 20%-50% of an organic base and the balance of water in percentage by weight. The present application not only can form nano-particles having a strengthening effect in capillary channels of a concrete surface layer, but also can achieve a technical effect of superhydrophobicity on the concrete surface layer.

Abstract: A low-heat-loss operation method of a line-focusing heat collection system and the line-focusing heat collection system are provided. The method includes the following steps. Solar energy is utilized to preheat a collector tube in an empty tube state, so that the collector tube is in a preheating mode. After a set preheating temperature is reached, a heat transfer working medium is injected into the collector tube. In the injection process of the heat transfer working medium, an injection section of the collector tube is converted into a focusing mode from a preheating mode. After heat collection is finished, the circulation of the heat transfer working medium is stopped, and the focusing mode of the collector tube is kept. In the drainage process of the heat transfer working medium, an emptying section of the collector tube is converted into a light heat-tracing mode from a focusing mode.

Abstract: Embodiments of the present technology include pixel structures. The pixel structures include a light emitting diode structure to generate ultraviolet light. The pixel structures further include a photoluminescent region containing a photoluminescent material. The pixel structures additionally include a first bandpass filter positioned between the light emitting diode structure and the photoluminescent region, where the first bandpass filter is operable to transmit greater than 50% of light having a wavelength less than or about 400 nm. The pixel structures yet additionally include a second bandpass filter positioned on an opposite side of the photoluminescent region as the first bandpass filter, where the second bandpass filter is operable to transmit greater than 50% of light having a wavelength greater than 400 nm.

Abstract: A system comprising a biomimetic electrochemical eye (EC-EYE) and a computing device is provided. The EC-EYE comprises: an ionic liquid device; a nanowire (NW) device that comprises the plurality of NWs; and a connection device configured to provide a plurality of currents associated with the plurality of NWs to a computing device. The computing device comprises one or more processors and a display device. The one or more processors are configured to: receive the plurality of currents from the plurality of NWs via the connection device; determine a plurality of pixel characteristics associated with a plurality of pixels based on the plurality of currents from the plurality of NWs; generate an image comprising the plurality of pixels based on the plurality of pixel characteristics; and provide the image to a display device. The display device is configured to display the image.

Abstract: A gas sensor array comprises a plurality of metal decorated metal oxide film based on three-dimensional nanostructured templates, each including a porous anodized aluminum oxide (AAO) template and a plurality of metal decorated metal oxide films. The porous AAO substrate has a top surface with top gold electrodes, a bottom surface with bottom gold electrodes and a plurality of pores. Each pore has an interior wall and two openings located on the top surface and the bottom surface respectively for allowing air to enter into the pore. Each metal-decorated metal oxide film comprises a metal oxide film and metal decoration particles. The metal oxide film has an internal surface attaching on a respective interior wall and an external surf-ace being decorated with the metal particles. Each decoration metal is different to provide different sensitivities in response to an environmental gas.

Abstract: A depilatory wax applying device includes: a housing provided with a feed port and a discharge port; a conveying channel provided in the housing, the conveying channel including a guiding tube, a heat insulation tube, and a heating tube that are connected successively, the guiding tube corresponding to the feed port, and the heating tube corresponding to the discharge port; a wax strip pushing device provided between the feed port and the guiding tube and configured to push a wax strip into the guiding tube; and a control device provided in the housing and electrically connected to the heating tube and the wax strip pushing device.

Abstract: Disclosed is a low-cost, scalable and highly repeatable approach to fabricate polystyrene films with three-dimensional nanopyramids on the surface. The nanopyramids have tubable aspect ratio and anti-bacterial performance. The effectiveness of the nanopyramids on bacterial and fungi growth inhibition and the role of nanostructure aspect ratio are confirmed via through scanning electron microscopy and confocal laser scanning microscopy. The results show an excellent antibacterial performance with more than 90% reduction in E. coli population in all nanopyramid samples after a 168-hr prolonged incubation time. The nanopyramid film developed here can be used for the clinical and commercial applications to prevent the growth of pathogenic bacteria on various surfaces.

Abstract: Aspects describe a nanotube array gas sensor, and methods to manufacture and use the same. In one example, the nanotube array gas sensor comprises an insulator template including an array of parallel aligned, open-ended nanotubes; a sensing material deposited on at least interior surfaces of the nanotubes; and catalyst nanoparticles distributed on the sensing material. An electronic controller activates electrodes made of different conductor materials in order to obtain multiple measurements of electrical resistance across the insulator template. The electrical resistance measurements can be compared to electrical resistance profiles in order to determine types and concentrations of gases in the nanotube array gas sensor.

Abstract: A system comprising a biomimetic electrochemical eye (EC-EYE) and a computing device is provided. The EC-EYE comprises: an ionic liquid device; a nanowire (NW) device that comprises the plurality of NWs; and a connection device configured to provide a plurality of currents associated with the plurality of NWs to a computing device. The computing device comprises one or more processors and a display device. The one or more processors are configured to: receive the plurality of currents from the plurality of NWs via the connection device; determine a plurality of pixel characteristics associated with a plurality of pixels based on the plurality of currents from the plurality of NWs; generate an image comprising the plurality of pixels based on the plurality of pixel characteristics; and provide the image to a display device. The display device is configured to display the image.

Abstract: The present invention discloses a handheld intelligent waxing device for depilatory wax comprising a housing, a feeding inlet and a discharging outlet are provided on the housing; a conveying channel for a depilatory wax strip to pass through is provided between the feeding inlet and the discharging outlet; a conveying device is provided at one end of the conveying channel where the feeding inlet is located, and a heating device is provided at the other end of the conveying channel where the discharging outlet is located; the housing is further provided with a control device for controlling the heating device and the conveying device.

Abstract: A depilatory wax applying device includes: a housing provided with a feed port and a discharge port; a conveying channel provided in the housing, the conveying channel including a guiding tube, a heat insulation tube, and a heating tube that are connected successively, the guiding tube corresponding to the feed port, and the heating tube corresponding to the discharge port; a wax strip pushing device provided between the feed port and the guiding tube and configured to push a wax strip into the guiding tube; and a control device provided in the housing and electrically connected to the heating tube and the wax strip pushing device.

Abstract: Provided herein is a gas sensor array and the apparatus incorporating the gas sensor array for performing gas detection and concentration level identification. The gas sensor array comprises a plurality of metal decorated metal oxide film based on three-dimensional nanostructured substrates, each including a porous anodized aluminum oxide (AAO) substrate and a plurality of metal decorated metal oxide films. The porous AAO substrate has a top surface with top gold electrodes, a bottom surface with bottom gold electrodes and a plurality of pores. Each pore has an interior wall and two openings located on the top surface and the bottom surface respectively for allowing air to enter into the pore. Each metal-decorated metal oxide film comprises a metal oxide film and metal decoration particles. The metal oxide film has an internal surface attaching on a respective interior wall and an external surface being decorated with the metal particles.

Abstract: Aspects describe a nanotube array gas sensor, and methods to manufacture and use the same. In one example, the nanotube array gas sensor comprises an insulator template including an array of parallel aligned, open-ended nanotubes; a sensing material deposited on at least interior surfaces of the nanotubes; and catalyst nanoparticles distributed on the sensing material. An electronic controller activates electrodes made of different conductor materials in order to obtain multiple measurements of electrical resistance across the insulator template. The electrical resistance measurements can be compared to electrical resistance profiles in order to determine types and concentrations of gases in the nanotube array gas sensor.

Abstract: The present disclosure provides in some embodiments an oxide TFT display substrate, a manufacture method thereof and a display device. The oxide TFT display substrate includes a first region at least corresponding to a semiconducting region of an oxide TFT and a second region other than the first region. The method includes steps of: forming, after the formation of the oxide TFT, a SiON layer at least covering the first region; and forming a SiNx layer covering the second region.

Abstract: The present disclosure provides in some embodiments an oxide TFT display substrate, a manufacture method thereof and a display device. The oxide TFT display substrate includes a first region at least corresponding to a semiconducting region of an oxide TFT and a second region other than the first region. The method includes steps of: forming, after the formation of the oxide TFT, a SiON layer at least covering the first region; and forming a SiNx layer covering the second region.

Abstract: Roll-to-roll fabrication of predetermined or ordered three-dimensional nanostructure arrays is described. Provided methods can comprise imprinting a substrate with a two-dimensional (2-D) pattern by rolling a cylindrical pattern comprising a 2-D array of structures against a substrate. In addition, control or determination of nanostructure parameters via control of process parameters is provided.

Abstract: Disclosed are three-dimensional nanocone film layers and associated devices. The nanocone film layers exhibit desirable properties such as anti-reflection, hydrophobicity, and low cost production. The nanocone film layers can be utilized to cover the surface of a photovoltaic cell and provide benefits to the photovoltaic cell such as enhance its light absorption capability, provide protection from moisture, increase efficiency of converting light to electricity, facilitate self-cleaning, and other such benefits. Furthermore, in an aspect, methods of fabricating three-dimensional nanocone film layers are disclosed herein.

Abstract: Roll-to-roll fabrication of predetermined or ordered three-dimensional nanostructure arrays is described. Provided methods can comprise imprinting a substrate with a two-dimensional (2-D) pattern by rolling a cylindrical pattern comprising a 2-D array of structures against a substrate. In addition, control or determination of nanostructure parameters via control of process parameters is provided.

Abstract: Direct growth of black Ge on low-temperature substrates, including plastics and rubber is reported. The material is based on highly dense, crystalline/amorphous core/shell Ge nanoneedle arrays with ultrasharp tips (˜4 nm) enabled by the Ni catalyzed vapor-solid-solid growth process. Ge nanoneedle arrays exhibit remarkable optical properties. Specifically, minimal optical reflectance (<1%) is observed, even for high angles of incidence (˜75°) and for relatively short nanoneedle lengths (˜1 ?m). Furthermore, the material exhibits high optical absorption efficiency with an effective band gap of ˜1 eV. The reported black Ge can have important practical implications for efficient photovoltaic and photodetector applications on nonconventional substrates.