Abstract: A dual-frequency antenna and an electronic device are provided, and belong to the field of communication technology. The dual-frequency antenna includes a first antenna unit and a second antenna unit opposite to each other, and a filtering unit therebetween. An operating frequency band of the first antenna unit is a first frequency band; an operating frequency band of the second antenna unit is a second frequency band; the filtering unit is configured to reflect an electromagnetic wave of the first frequency band and to transmit an electromagnetic wave of the second frequency band; the first antenna unit is configured to receive the electromagnetic wave of the first frequency band and to reflect the received electromagnetic wave of the first frequency band by the filtering unit; and the second antenna unit is configured to receive and reflect the electromagnetic wave of the second frequency band transmitted by the filtering unit.

Abstract: A rubber and metal composite electric contact and a preparation process therefor. The rubber and metal composite electric contact is a circular layered complex which is formed by tightly combining a metal sheet layer having a plurality of through holes and a rubber layer by means of thermal vulcanization molding and which has a thickness of 0.1 to 5 mm and a diameter of 1 to 15 mm. There is no isolation layer between the rubber layer and the metal layer of the electric contact, so no rubber overflows the outer surface of the metal layer. In the rubber and metal composite electric contact, the rubber and metal are combined firmly and the overall strength of the electric contact is adjustable; the electric contact also has good dust resistance; and the electric contact thus has stable and reliable electrical conductivity.

Abstract: A photo-detecting apparatus is provided. The photo-detecting apparatus includes a carrier conducting layer having a first surface; an absorption region is doped with a first dopant having a first conductivity type and a first peak doping concentration, wherein the carrier conducting layer is doped with a second dopant having a second conductivity type and a second peak doping concentration, wherein the carrier conducting layer comprises a material different from a material of the absorption region, wherein the carrier conducting layer is in contact with the absorption region to form at least one heterointerface, wherein a ratio between the first peak doping concentration of the absorption region and the second peak doping concentration of the carrier conducting layer is equal to or greater than 10; and a first electrode and a second electrode both formed over the first surface of the carrier conducting layer.

Abstract: Methods of forming devices comprise forming a dielectric layer on a substrate, the dielectric layer comprising at least one feature defining a gap including sidewalls and a bottom. A self-assembled monolayer (SAM) is formed on the bottom of the gap, and a barrier layer is formed on the SAM before selectively depositing a metal liner on the barrier layer. The SAM is removed after selectively depositing the metal liner on the barrier layer.

Abstract: A scanning apparatus (110), a medical image obtaining method, and a medical image obtaining system (100) are provided. The scanning apparatus (110) comprises a gantry, a controller, a C-shaped arm, a radiation source (112), and a detector (113). The radiation source (112) and the detector (113) are arranged at both ends of the C-shaped arm. The C-shaped arm is connected to the gantry. The controller is configured to control a motion of the gantry to drive the C-shaped arm to move so as to scan a target object.

Abstract: The present disclosure relates to a collector, a cell sorting device, and a method for cell collection. The collector comprises: a housing which is internally provided with a mixing chamber and a loading chamber and which is provided with a filling hole in communication with the mixing chamber; a microfluidic chip arranged in the housing; and a collection vessel detachably connected to the housing. A target cell solution separated by the microfluidic chip can flow into the collection vessel. An inlet of the microfluidic chip, the loading chamber, and the collection vessel are selectively in communication with the mixing chamber through a communicating structure, respectively.

Abstract: An adjustable antenna array and an electronic apparatus are provided. The adjustable antenna array includes: a first substrate and a second substrate opposite to each other, and antenna sub-arrays in an array. Each of at least some antenna sub-arrays includes a phase shifter, a power division feeding network, and a plurality of radiating units. The phase shifter and the power division feeding network are between the first substrate and the second substrate. At least some radiating units are connected to the phase shifter through the power division feeding network. Antenna patterns corresponding to the plurality of radiating units at least include patterns on a side of the second substrate away from the first substrate. An area of an orthographic projection of the power division feeding network on the first substrate is smaller than an area of an orthographic projection of the phase shifter on the first substrate.

Abstract: Disclosed embodiments relate to systems and methods for managing user memberships over a distributed computing network on a server. Techniques include authenticating a membership issuer, generating a cryptographic digital asset associated with a membership, creating a software module, associating the cryptographic digital asset with a first user, receiving a request to transfer the cryptographical user from the first user to a second user, transferring the cryptographic digital asset, and updating an agreement based on the transfer.

Abstract: Systems, apparatuses, and methods for improved reconfigurable optical sensing are provided. For instance, an example optical sensing apparatus can include a photodetector array including a plurality of photodetectors. The optical sensing apparatus can include circuitry or one or more processing devices configured to receive one or more electrical signals representing an optical signal received by a first subset of the plurality of photodetectors; determine, based on the one or more electrical signals, a region of interest in the photodetector array for optical measurements; and deactivate, based on the region of interest, a second subset of the plurality of photodetectors of the photodetector array.

Abstract: A circuit, including: a photodetector including a first readout terminal and a second readout terminal different than the first readout terminal; a first readout circuit coupled with the first readout terminal and configured to output a first readout voltage; a second readout circuit coupled with the second readout terminal and configured to output a second readout voltage; and a common-mode analog-to-digital converter (ADC) including: a first input terminal coupled with a first voltage source; a second input terminal coupled with a common-mode generator, the common-mode generator configured to receive the first readout voltage and the second readout voltage, and to generate a common-mode voltage between the first and second readout voltages; and a first output terminal configured to output a first output signal corresponding to a magnitude of a current generated by the photodetector.

Abstract: Methods of forming copper interconnects are described. A doped tantalum nitride layer formed on a copper layer on a substrate has a first amount of dopant. The doped tantalum nitride layer is exposed to a plasma comprising one or more of helium or neon to form a treated doped tantalum nitride layer with a decreased amount of dopant. Apparatus for performing the methods are also described.

Abstract: A direct cooling plate, a heat exchanger, a power battery pack and a vehicle are disclosed. The direct cooling plate includes a plurality of heat exchange channels, which are arranged inside the direct cooling plate. Each heat exchange channel includes an inlet for a refrigerant and an outlet for the refrigerant to flow out therefrom. The at least one heat exchange channel is circumferentially arranged around the other heat exchange channels; and each heat exchange channel forms a heat exchange unit at the direct cooling plate, and the heat exchange unit is used for performing heat exchange in different temperature regions of a battery. The direct cooling plate can control the temperature of the refrigerant at the inlet of each heat exchange channel aimed at different temperature regions of the battery, such that the overall temperature difference of the battery is improved, and prolonging the service life of the battery.

Abstract: An electronic device includes a conductive layer, a first dielectric layer, and a second dielectric layer, in which the second dielectric layer is disposed on the first dielectric layer, the conductive layer is disposed between the first dielectric layer and the second dielectric layer, the first dielectric layer has a first transmittance for a light, the second dielectric layer has a second transmittance for the light, and the first transmittance is different from the second transmittance.

Abstract: Virtual account use in an online marketplace is described. Listings published to a multitude of client devices by the online marketplace include a first listing for a first item and a second listing for a second item. The first item is listed by a first user account and the second item is listed by a second user account. In connection with a third user account purchasing the first item, the online marketplace provides a first monetary compensation to the first user account from the third user account by updating a balance of a virtual account of the first user account to include the first monetary compensation. In connection with the first user account purchasing the second item via the second listing, the online marketplace provides at least a portion of the balance to the second user account directly from the virtual account as second monetary compensation.

Abstract: The present disclosure provides a radio frequency apparatus, an antenna and an electronic device, and belongs to the field of communication technology. The radio frequency apparatus includes first and second dielectric substrates opposite to each other, first and second phase shifting structures between the first and second dielectric substrates; wherein the radio frequency apparatus further includes a first connection electrode and a second connection electrode; the first phase shifting structure and the second phase shifting structure each have a first end and a second end, the first ends of the first phase shifting structure and the second phase shifting structure are electrically connected to each other by the first connection electrode; the second ends of the first phase shifting structure and the second phase shifting structure are electrically connected to each other by the second connection electrode, to form a ring circuit structure.

Abstract: An electronic device including at least one light emitting chip, a circuit chip, and a base is provided. The base having a first surface, a second surface opposite to the first surface and at least one conductive via extending from the first surface to the second surface, the base is disposed between the at least one light emitting chip and the circuit chip, and the base is greater than one of the at least one light emitting chip in thickness. The circuit chip is electrically connected to the at least one light emitting chip through the at least one conductive via and configured to control the at least one light emitting chip.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for eye gesture recognition. In one aspect, a method includes obtaining an electrical signal that represents a measurement, by a photodetector, of an optical signal reflected from an eye and determining a depth map of the eye based on phase differences between the electrical signal generated by the photodetector and a reference signal. Further, the method includes determining gaze information that represents a gaze of the eye based on the depth map and providing output data representing the gaze information.

Abstract: Methods of forming devices comprise forming a dielectric layer on a substrate, the dielectric layer comprising at least one feature defining a gap including sidewalls and a bottom. A self-assembled monolayer (SAM) is formed on the bottom of the gap, and a barrier layer is formed on the SAM before selectively depositing a metal liner on the barrier layer. The SAM is removed after selectively depositing the metal liner on the barrier layer.

Abstract: Provided are methods of forming vias with decreased resistance by selectively depositing a barrier layer on an insulating layer and not on a metallic surface. Some embodiments of the disclosure utilize a planar hydrocarbon to form a blocking layer on metallic surfaces. Deposition is performed to selectively deposit on the unblocked insulating surfaces.