Abstract: The present application discloses a cellular network access method and apparatus. An embodiment of the cellular network access method for a base station comprises: receiving, from a pair of D2D devices, a result of a spectrum detection which indicates a load level of a detected spectrum; selecting a cellular communication mode or a D2D communication mode based on the received result of the spectrum detection; and notifying the pair of D2D devices of the selected mode. Through dynamic switching between the cellular communication mode and the D2D communication mode, it is possible to make full use of the available spectrum, thereby increasing the throughput of the system.

Abstract: A lithium-sulfur battery includes a cathode, an anode, a lithium-sulfur battery separator and an electrolyte. The lithium-sulfur battery separator includes a pristine separator (PSL) and a functional layer (FL). The FL is located on a surface of the PSL. The FL includes a plurality of carbon nanotubes and a plurality of MoP2 nanoparticles uniformly mixed with each other.

Abstract: A lithium-sulfur battery separator includes a pristine separator (PSL) and a functional layer (FL). The FL is located on a surface of the PSL. The FL includes a plurality of carbon nanotubes and a plurality of MoP2 nanoparticles uniformly mixed with each other.

Abstract: A lithium-sulfur battery includes a cathode, an anode, a lithium-sulfur battery separator and an electrolyte. The lithium-sulfur battery separator includes a PSL and a FL. The FL is located on a surface of the PSL. The FL comprises a plurality of graphene sheets and a plurality of MoP2 nanoparticles uniformly mixed with each other.

Abstract: A imaging device 1-D nanomaterials is provided. The device includes: a first light source, a second light source, a microscope with a liquid immersion object, and a carrier. The first light source is configured to provide a first incident light and the second light source is configured to provide a second incident light, the first incident light and the incident light are not parallel to each other. The carrier is configured to contain a 1-D nanomaterials sample and a liquid, both the 1-D nanomaterials sample and the liquid immersion object are immersed in the liquid.

Abstract: A task allocating method for a reconfigurable processing system is provided by the present disclosure. The method includes determining a use status of a hardware processing resource of the reconfigurable processing system. The hardware processing resource includes m task channels and a reconfigurable computing array, and one task channel controls at least one operator in the reconfigurable computing array at a time to process one task. The number m is a positive integer and allocating a first task in n tasks to be processed according to the use status of the hardware processing resource, so that at least one task channel in the m task channels controls the reconfigurable computing array to process simultaneously at least one task which includes the first task, where the number n is a positive integer. A task allocating system for a reconfigurable processing system is also provided by the present disclosure.

Abstract: A lithium-sulfur battery includes a cathode, an anode, a lithium-sulfur battery separator and an electrolyte. The lithium-sulfur battery separator includes a PSL and a FL. The FL is located on a surface of the PSL. The FL comprises carbon nanotube structure and a plurality of MoP2 nanoparticles. The carbon nanotube structure defines a plurality of micropores. The plurality of MoP2 nanoparticles is located on surface of the carbon nanotube structure and filled in micropores in the carbon nanotube structure.

Abstract: A method of making a grating, the method including: providing a substrate, placing a first photoresist layer on the substrate, locating a second photoresist layer on the first photoresist layer, wherein a second exposure dose of the second photoresist layer is greater than a first exposure dose of the first photoresist layer; exposing the first photoresist layer and the second photoresist layer; developing the first photoresist layer and the second photoresist layer and removing an exposed photoresist to form a patterned photoresist layer and obtain an exposed surface of the substrate, wherein the patterned photoresist layer defines a plurality of top surfaces and a plurality of side surfaces, each adjacent top surface and side surface, and the exposed surface form a Z-type surface; depositing a preformed layer on the Z-type surface to form a Z-type structure; removing the patterned photoresist layer.

Abstract: The disclosure relates to a proton exchange membrane fuel cell. The fuel cell includes: a container, wherein the container includes a reacting room, a fuel room connected to the reacting room through a fuel inputting hole, a fuel inputting door located on the fuel inputting hole, a waste collecting room connected to the reacting room through a waste outputting hole, a waste outputting door located on the waste outputting hole; a membrane electrode assembly device located in the reacting room, wherein the reacting room is divided into an anode electrode space and a cathode electrode space connected to the outside through a pipe, the volume of the anode electrode space and the cathode electrode space can be changed by moving the membrane electrode assembly device.

Abstract: Embodiments of the present disclosure disclose a backside processing method for a back-illuminated photoelectric device. The backside processing method includes: mechanically thinning the back-illuminated photoelectric device such that a thickness of the back-illuminated photoelectric device reaches a first desired thickness; and chemically thinning and chemically polishing the back side of the mechanically thinned back-illuminated photoelectric device by using a nitric acid solution and a hydrofluoric acid solution such that the thickness of the mechanically thinned back-illuminated photoelectric device reaches a second desired thickness and a surface roughness of the back side of the back-illuminated photoelectric device reaches a desired surface roughness.

Abstract: Embodiments of the present disclosure provide an ion mobility spectrometer device. The ion mobility spectrometer device includes: an ion mobility tube, a sampling device, and a sampling and circulating gas path. The sampling device includes a solid sample desorption device and a gas sampling device. The solid sample desorption device is configured to process the solid sample into a first mixed gas containing the solid sample, and the gas sampling device is configured to process the gas sample into a second mixed gas containing the gas sample. The sampling and circulating gas path is configured to transfer the first mixed gas and/or the second mixed gas into the ion mobility tube for detection.

Abstract: The disclosed technology relates to an X-ray conversion target. In one aspect, the X-ray conversion target includes target body and a target part arranged within the target body, the target part having a first face configured to produce X-rays. The X-ray conversion target further comprises a cooling passage having a side wall, at least a part of the side wall being consisted of a portion of the target part.

Abstract: The disclosure provides an electronic device, a method and computer-readable medium. The electronic device includes a circuitry. The circuitry is configured to receive a radio communication signal for another device. The circuitry is also configured to determine, based on the radio communication signal, one or more features that can reflect the difference between uplink transmission mode and downlink transmission mode. The circuitry is further configured to judge whether the radio communication signal is for uplink transmission or downlink transmission according to the feature(s).

Abstract: The present disclosure relates to a lithium-ion battery anode comprising a flexible and free-standing carbon nanotube film, and a plurality of titanium dioxide nanoparticles uniformly adsorbed on a surface of each of the plurality of carbon nanotubes. The flexible and free-standing carbon nanotube film comprises a plurality of carbon nanotubes. A particle size of each of the plurality of titanium dioxide nanoparticles is less than or equal to 30 nanometers. The present disclosure also relates to a lithium-ion battery comprising the lithium-ion battery anode.

Abstract: A bonding method utilizing carbon nanotubes provides first and second objects to be bonded and a carbon nanotube structure. The carbon nanotube structure comprises a super-aligned carbon nanotube film comprising carbon nanotubes, the carbon nanotubes extending substantially along a same direction. The carbon nanotube structure is laid on surface of first object and surface of second object is pressed onto the carbon nanotube structure. Pressure being applied to the first object and the second object bonds the two together.

Abstract: A method for repairing surface of carbon nanotube array is provided. A carbon nanotube array located on a substrate are provided. The carbon nanotube array comprises a plurality of carbon nanotubes, and at least part of the plurality of carbon nanotubes are aslant arranged on the surface of the substrate. An adhesive tape is placed on a surface of the carbon nanotube array away from the substrate. A bond force between the plurality of carbon nanotubes and the substrate is greater than a bond force between the plurality of carbon nanotubes and the adhesive tape. The adhesive tape is peeled off, and the at least part of the plurality of carbon nanotubes are pulled up vertically by a bond force of the adhesive tape.

Abstract: The disclosure relates to a method for using fuel cell. The fuel cell includes a container, wherein the container comprises a housing and a nozzle, and the housing defines through holes; the housing defines a chamber and an opening; the nozzle has a first end in air/fluid communication with the opening and a second end; and a membrane electrode assembly, which is flexible, on the container to form a curved membrane electrode assembly surrounding the chamber and covering the through holes, wherein the membrane electrode assembly comprises a proton exchange membrane having a first surface and a second surface, a cathode electrode on the first surface and an anode electrode on the second surface. The method includes at least partially immersing the fuel cell in a fuel; and supplying an oxidizing gas into the chamber.

Abstract: A method for making a carbon nanotube array includes providing a substrate having a first substrate surface and a second substrate surface opposite to the first substrate surface. The substrate has a plurality of through holes spaced from each other, and each of the plurality of through holes extends from the first substrate surface to the second substrate surface. A catalyst layer is deposited on the first substrate surface, to form a composite structure. The composite structure is placed in a chamber. The carbon source gas and protective gas are supplied to the chamber, and the composite structure is heated to a first temperature, to grow a carbon nanotube array on the first substrate surface.

Abstract: A method for processing an asynchronous event by a checking device and a checking device are provided, the method including: obtaining an instruction position where a checked processor executes an asynchronous event during a target running process; and executing the asynchronous event at the instruction position during executing a task of the target running process in a manner conforming to predefined behavior, wherein the predefined behavior is a hardware behavior standard of the processor. Obtaining the instruction position and executing the asynchronous event at the instruction position may cause the checking device and the checked processor to process the same asynchronous event at the same instruction position. In this way, during performing security checking on a processor, the method and the device according to the embodiments of the present disclosure may be used to eliminate the influence of the uncertainty factor of the asynchronous event.

Abstract: The present disclosure provides a waveguide-excited terahertz microstrip antenna. The antenna includes a dielectric substrate, a ground plate, a rectangular waveguide, a metal pin, and a radiation patch. The dielectric substrate has a first surface and a second surface opposite to the first surface. The ground plate is located on the first surface of the dielectric substrate and defines a coupling slit. The rectangular waveguide is located on a surface of the ground plate away from the dielectric substrate and extended substantially along a first direction parallel to the first surface. The metal pin is located inside the rectangular waveguide, and is in contact with the ground plate and substantially perpendicular to the ground plate. The radiation patch is located on the second surface of the dielectric substrate.