Abstract: A polarization sensor is described. It includes a quarter-wave plate to convert circularly polarized light into linearly polarized light. The quarter-wave plate is realized as a metasurface. The sensor also includes a linear polarizer to analyze the light generated by the quarter-wave plate, and a photodetector to receive the analyzed light. The sensor may be combined with other linear polarization sensors to form a sensor capable of complete measurement of the polarization state of incident light. An array of these sensors can be integrated directly onto image sensors to form a polarimetric imager.

Abstract: An atomic layer deposition equipment and an atomic layer deposition process method are disclosed. The atomic layer deposition equipment includes a chamber, a substrate stage, at least one bottom pumping port, at least one hollow component, a baffle and a shower head assembly, wherein the hollow component has an exhaust hole. The baffle is below the hollow component and forms an upper exhaust path with the hollow component, so that the flow field of the precursor in the atomic layer deposition process can be adjusted to a slow flow field to make a uniform deposition on the substrate.

Abstract: This specification provides data processing methods, apparatuses and devices. In embodiments of the specification, table data includes a state identifier for indicating whether a target table is in a use state or an idle state. Therefore, after an occupying-table request is received, the table data can be obtained, and the state of the target table can be determined from the state identifier in the table data. If the target table is in the idle state, the table data is locked; after the state identifier is updated to the use state, the table data is released; and occupying-table data of the target table is generated to respond to the occupying-table request.

Abstract: A method for monocular 3D object perception is described. The method includes sampling multiple, stochastic latent variables from a learned latent feature distribution of an RGB image for a 2D object detected in the RGB image. The method also includes lifting a 3D proposal for each stochastic latent variable sampled for the detected 2D object. The method further includes selecting a 3D proposal for the detected 2D object using a proposal selection algorithm to reduce 3D proposal lifting overlap. The method also includes planning a trajectory of an ego vehicle according to a 3D location and pose of the 2D object according to the selected 3D proposal.

Abstract: A method of closing an opening in a tissue comprises providing a light absorbing material, introducing the light absorbing material into a tissue opening, and irradiating the light absorbing material with at least one light source so as to increase a temperature of the light absorbing material, causing the tissue edges of the tissue opening adhere to the light absorbing material and/or to each other. A kit comprising a light absorbing material and a light emitting device is also described.

Abstract: A positioning and tracking system is disclosed. The positioning and tracking system includes positioning sensors disposed in a space, wherein the positioning sensors are all movable and all have functions of sensing distance, angle and time, and the positioning sensors communicate with each other to sense relative distances, relative angles and relative times between every two positioning sensors of the positioning sensors. when at least one of the positioning sensors moves in the space, the positioning sensors re-communicate with each other to instantly update the relative distances, the relative angles and the relative times between every two positioning sensors of the positioning sensors.

Abstract: A circular polarization filter of a chiral metasurface structure is disclosed including a substrate having a nanograting pattern extending from the substrate, a dielectric layer formed directly on the nanograting pattern, and a plasmonic structure in direct contact with the dielectric layer, where the plasmonic structure may be oriented at a nonzero angle with respect to the nanograting pattern. An integrated polarization filter array is also disclosed including include a linear polarization filter, and a circular polarization filter. Methods of detecting full-stokes polarization using an integrated polarization filter array having both linear and circular polarization filters made from chiral metasurface structures is disclosed. Methods of using a Mueller matrix to evaluate polarization response of any optical device or system is also disclosed.

Abstract: A system and method for egocentric-vision based future vehicle localization that include receiving at least one egocentric first person view image of a surrounding environment of a vehicle. The system and method also include encoding at least one past bounding box trajectory associated with at least one traffic participant that is captured within the at least one egocentric first person view image and encoding a dense optical flow of the egocentric first person view image associated with the at least one traffic participant. The system and method further include decoding at least one future bounding box associated with the at least one traffic participant based on a final hidden state of the at least one past bounding box trajectory encoding and the final hidden state of the dense optical flow encoding.

Abstract: An additive manufacturing process for forming a metallic layer on the surface of the substrate includes fabricating a substrate from a polymerizable composition by a stereolithographic process, and contacting the reactive surface with an aqueous solution including a metal precursor. The metal precursor includes a metal, and the polymerizable composition includes a multiplicity of multifunctional components. Each multifunctional component includes a reactive moiety extending from a surface of the substrate to form a reactive surface. An interface between the reactive surface and the aqueous solution is selectively irradiated to form nanoparticles including the metal in a desired pattern. The nanoparticles are chemically coupled to the reactive surface by reactive moieties, thereby forming a metallic layer on the surface of the substrate.

Abstract: An additive manufacturing process for forming a metallic layer on the surface of the substrate includes fabricating a substrate from a polymerizable composition by a stereolithographic process, and contacting the reactive surface with an aqueous solution including a metal precursor. The metal precursor includes a metal, and the polymerizable composition includes a multiplicity of multifunctional components. Each multifunctional component includes a reactive moiety extending from a surface of the substrate to form a reactive surface. An interface between the reactive surface and the aqueous solution is irradiated to form nanoparticles including the metal. The nanoparticles are chemically coupled to the reactive surface by reactive moieties, thereby forming a metallic layer on the surface of the substrate.

Abstract: An optical device is disclosed. The optical device includes a silicon substrate, an aluminum oxide layer, an aluminum layer between the silicon substrate and the aluminum oxide layer, and a metasurface nanostructure. The metasurface nanostructure may include a graphene monolayer on the aluminum oxide layer and an electrically conductive nanoantenna array in direct contact with the graphene monolayer, where each nanoantenna in the nanoantenna array may include multiple segments, each segment having one or more parameters selected to achieve simultaneous resonance in the mid-infrared and the near infrared spectral regions when the graphene monolayer is irradiated with a near infrared pump pulse and a continuous mid-infrared probe. The optical device generates mid-infrared pulses via ultrafast modulation of hot carriers in the monolayer graphene.

Abstract: The present disclosure provides a smart refrigerator-based networking and control method, a smart refrigerator-based networking and control system, and a smart refrigerator. Wherein the smart refrigerator-based networking and control method for the smart refrigerator comprises obtaining device information of the smart refrigerator; receiving device information and network access request sent by a device to be connected to the network through a Bluetooth assembly; bundling device information of the device to be connected to the network and device information of the smart refrigerator, and generating bundling information; and sending device information of the device to be connected to the network, device information of the smart refrigerator, and the bundling information to a server, so the server responds to the network access request according to device information of the device to be connected to the network, device information of the smart refrigerator, and the bundling information.

Abstract: A method for the determining a position of at least one measurement object equipped with a mobile station having a receiver includes employing at least four reference objects having a base station and a transmitter, wherein a first reference object of the at least four reference objects has a mobile station with a receiver and simultaneously acts as a measurement object. The base station and the mobile station are structurally combined. The reference objects initially have a known position that can change. The transmitters of the base stations transmit signals and the mobile stations receive signals. The method additionally includes emitting, by at least two transmitters of base stations, periodic signals of different frequencies at mutually defined time intervals, wherein these frequencies are closely adjacent.

Abstract: Provided herein are systems and related methods of performing solar field and receiver inspections based on polarimetric-enhanced imaging.

Abstract: A polarization sensor is described. It includes a quarter-wave plate to convert circularly polarized light into linearly polarized light. The quarter-wave plate is realized as a metasurface. The sensor also includes a linear polarizer to analyze the light generated by the quarter-wave plate, and a photodetector to receive the analyzed light. The sensor may be combined with other linear polarization sensors to form a sensor capable of complete measurement of the polarization state of incident light. An array of these sensors can be integrated directly onto image sensors to form a polarimetric imager.

Abstract: An envelope tracking power amplifier module and an envelope tracking method are provided. The envelope tracking power amplifier module includes a power amplifier and a linear amplifier coupled to the power amplifier and configured to receive and amplify an envelope signal and provide the amplified envelope signal to the power amplifier. The power amplifier is configured to receive and amplify a signal according to the amplified envelope signal. The envelope tracking method includes: providing a signal to the power amplifier; deriving an envelope phase of the signal, the envelope phase corresponding to an output power of the power amplifier; providing an envelope signal including the envelope phase to the envelope tracking module; the envelope tracking module providing the amplified envelope signal to the power amplifier; and the power amplifier amplifying the signal according to the amplified envelope signal and outputting the amplified signal at the output power.

Abstract: A catalyst for preparing chlorine gas by hydrogen chloride oxidation, comprising the following components calculated according to mass content based on the total weight of the catalyst: 0.5-20 wt % copper; 2-10 wt % manganese; 0.05-2 wt % boron; 0.01-3 wt % chromium; 0.1-10 wt % rare earth metal; 0.1-10 wt % potassium; and 3-15 wt % titanium; also comprising 0.02-1.1 wt % phosphorus; and 0.03-1.9 wt % iron; the carrier content is 55-90 wt %. In the case of a fluidized bed reactor, the present catalyst can achieve a one-way hydrogen chloride conversion rate of 80-85%. Almost all of the 0-1000 mg/kg of chlorinated benzene contained in hydrogen chloride gas can be converted into CO2 and H2O without generating polychlorinated benzene.

Abstract: A method for monocular 3D object perception is described. The method includes sampling multiple, stochastic latent variables from a learned latent feature distribution of an RGB image for a 2D object detected in the RGB image. The method also includes lifting a 3D proposal for each stochastic latent variable sampled for the detected 2D object. The method further includes selecting a 3D proposal for the detected 2D object using a proposal selection algorithm to reduce 3D proposal lifting overlap. The method also includes planning a trajectory of an ego vehicle according to a 3D location and pose of the 2D object according to the selected 3D proposal.

Abstract: The present disclosure provides a tissue imaging method, including: inserting an electronic probe into a lesion area of a patient and ablating tissue of the lesion area; capturing a first image including the lesion area by using an imaging apparatus; vibrating the electronic probe to generate displacement of at least a portion of the tissue of the lesion area, and capturing a second image including the lesion area by using the imaging apparatus; generating a correlation image according to a correlation between the first image and the second image; and computing an ablation boundary according to the correlation image.

Abstract: The present disclosure provides a smart refrigerator-based networking and control method, a smart refrigerator-based networking and control system, and a smart refrigerator. Wherein the smart refrigerator-based networking and control method for the smart refrigerator comprises obtaining device information of the smart refrigerator; receiving device information and network access request sent by a device to be connected to the network through a Bluetooth assembly; bundling device information of the device to be connected to the network and device information of the smart refrigerator, and generating bundling information; and sending device information of the device to be connected to the network, device information of the smart refrigerator, and the bundling information to a server, so the server responds to the network access request according to device information of the device to be connected to the network, device information of the smart refrigerator, and the bundling information.