Abstract: An anti-theft suction cup structure includes a suction-cup body and a pressure ring. The suction-cup body has a suction end and a braking end. The suction end has a cup groove recessed on a side thereof toward the braking end, the braking end has an exhaust part formed thereon and is normally in a closed status. The pressure ring is mounted on an outer periphery of the suction-cup body. When the suction end is used for suction, air in the cup groove is extracted to form vacuum between the cup groove and the attached object, the sidewall of the cup groove is tightly attached with the attached object. When air is injected into between the cup groove and the attached object, non-vacuum is formed between the cup groove and the attached object. In vacuum, the pressure ring is configured to press hard on the suction-cup body.

Abstract: A microfluidic device and a detection method for the microfluidic device are provided. The microfluidic device includes a driving substrate configured to drive a movement of a droplet; and a position detector configured to detect a position of the droplet on the driving substrate.

Abstract: The present invention provides a reference voltage buffer comprises a reference voltage generator, a first operational amplifier, a first transistor, a first group of resistors, a first load, a second transistor, a second group of resistors and a second load. In the reference voltage buffer, the first load and the second load use active device to increase the settling time, and the first load, the second load and the reference voltage generator of the reference voltage buffer are resigned to have the same characteristics in response to the temperature variation to overcome the PVT issue, and the first load and the second load of the reference voltage buffer use the open-loop design to have large full-scale of the output reference voltages.

Abstract: In an embodiment, a server receives—a digital key request for a digital key to unlock a smart lock. A biometric feature request for collecting a biometric feature from the mobile device is generated and sent to the mobile device. A biometric feature corresponding to the biometric feature request is received. Identity information and a device identifier of the smart lock is received from another server. Based on the identity information, a matching biometric feature stored in a biometric feature database is determined. An identity of a user corresponding to the received biometric feature is verified based on the matching biometric feature. After the identity of the user is verified, smart lock information is identified. A digital key for unlocking the smart lock is generated based on the digital key request and the smart lock information and sent to the mobile device.

Abstract: A microfluidic apparatus is provided. The microfluidic apparatus includes an electrochromic layer including a plurality of individually independently addressable regions; a microfluidic layer defining a microfluidic channel for allowing a microfluid to pass therethrough; and a plurality of photodetectors configured to detect light transmit through the microfluid.

Abstract: The embodiments of the present disclosure relate to a microfluidic chip. The microfluidic chip may include a substrate. The substrate may include an electrode layer on a base substrate, a dielectric layer on the electrode layer, and a lyophobic layer on the dielectric layer. The electrode layer may include a plurality of electrode units. Each of the plurality of electrode units may be configured to realize both droplet detection and droplet driving in response to a detection signal and a driving signal respectively.

Abstract: An anti-theft suction cup structure includes a suction-cup body and a pressure ring. The suction-cup body has a suction end and a braking end. The suction end has a cup groove recessed on a side thereof toward the braking end, the braking end has an exhaust part formed thereon and is normally in a closed status. The pressure ring is mounted on an outer periphery of the suction-cup body. When the suction end is used for suction, air in the cup groove is extracted to form vacuum between the cup groove and the attached object, the sidewall of the cup groove is tightly attached with the attached object. When air is injected into between the cup groove and the attached object, non-vacuum is formed between the cup groove and the attached object. In vacuum, the pressure ring is configured to press hard on the suction-cup body.

Abstract: In an embodiment, a server receives-a digital key request for a digital key to unlock a smart lock. A biometric feature request for collecting a biometric feature from the mobile device is generated and sent to the mobile device. A biometric feature corresponding to the biometric feature request is received. Identity information and a device identifier of the smart lock is received from another server. Based on the identity information, a matching biometric feature stored in a biometric feature database is determined. An identity of a user corresponding to the received biometric feature is verified based on the matching biometric feature. After the identity of the user is verified, smart lock information is identified. A digital key for unlocking the smart lock is generated based on the digital key request and the smart lock information and sent to the mobile device.

Abstract: The present disclosure discloses a microfluidic structure, a microfluidic chip and a detection method. The microfluidic structure includes: a first base substrate and a second base substrate opposite to each other, an antibody area located between the first base substrate and the second base substrate and storing an enzyme-labeled first antibody, a cleaning area storing cleaning liquid, a signal substrate area storing a signal substrate solution and a detection area with a second antibody and an ion sensitive film fixed thereon, wherein all channel areas from the antibody area, the cleaning area and the signal substrate area to the detection area each have a driving electrode structure driving liquid drops to move; and the detection area has a thin film transistor connected with the ion sensitive film.

Abstract: The present disclosure provides a microfluidic chip, a biological detection device and a method. The microfluidic chip includes: a first substrate and a second substrate that are oppositely disposed; a first electrode and a second electrode that are oppositely disposed between the first substrate and the second substrate, the first electrode including a plurality of spaced first electrode units, and the second electrode including a plurality of spaced second electrode units, wherein the first electrode units are disposed oppositely to the second electrode units in one-to-one correspondence; a first dielectric layer and a second dielectric layer between the first electrode and the second electrode; a first hydrophobic layer and a second hydrophobic layer between the first dielectric layer and the second dielectric layer, wherein a gap is between the first hydrophobic layer and the second hydrophobic layer.

Abstract: Embodiments of this specification provide methods and systems for operating an IoT device An exemplary method comprises: receiving, by a user equipment, an operation instruction for the IoT device from a user, wherein the user equipment is communicatively coupled with the IoT device; identifying, by the user equipment, a biometric feature of the user; verifying, by the user equipment, an identity of the user based on the biometric feature; signing, by the user equipment, the operation instruction using a first user key of the user in response to the identity of the user being verified; transmitting, by the user equipment, the signed operation instruction to the IoT device; verifying, by the IoT device, the signed operation instruction using a second user key of the user; and executing, by the IoT device, the operation instruction in response to the signed operation instruction being verified.

Abstract: A microfluidic chip and a detection method using the microfluidic chip. The microfluidic chip includes: at least one micro-chamber; a photocathode located on a side of the at least one micro-chamber and configured to receive photons emitted from the micro-chamber to generate electrons; a micro-channel plate located on a side of the photocathode away from the micro-chamber and configured to multiply the electrons generated by the photocathode; and a first electrode located on a side of the micro-channel plate away from the photocathode; the micro-channel plate includes a plurality of micro-channels extending substantially in a thickness direction of the micro-channel plate, a secondary electron emission layer is provided on an inner wall of each of the plurality of micro-channels, and the first electrode is configured to detect the electrons that are multiplied by the micro-channel plate.

Abstract: A biological detection substrate, a microfluidic chip and a driving method thereof, and a microfluidic detection component are provided. The biological detection substrate includes a sample capture region, the sample capture region includes an electromagnetic coil, and the electromagnetic coil is configured to capture a sample in a sample droplet that is driven to pass through the sample capture region.

Abstract: A diagnostic system applied to an electronic equipment with a plurality of hardware devices is provided. The hardware devices include a display and a processor, the diagnostic system is executed by the processor to diagnose the hardware devices. The diagnostic system includes a diagnostic test interface, which is displayed on the display and includes a plurality of hardware items corresponding to the hardware devices. Each of the hardware items links to the hardware devices. When at least one of the hardware items is triggered, the processor executes the diagnostic item of the hardware device corresponding to the triggered hardware item.

Abstract: The present disclosure discloses a sample preliminary screening chip, a specimen detecting method and a screening device. A data processor may be configured to control a sample solution containing a specimen to be added into a preliminary screening inlet of the sample preliminary screening chip, and control the sample solution in the preliminary screening inlet to enter a channel, successively to flow through a first preliminary screening area and a second preliminary screening area, and to flow out from a preliminary screening outlet so as to store a liquid with the specimen in a first preliminary screening area. In this way, the liquid containing the specimen may be screened preliminarily.

Abstract: A biological detection chip, a biological detection device, and a detection method thereof are disclosed. The biological detection chip includes a first base substrate and a plurality of detection units arranged in an array along a row direction and a column direction on the first base substrate. Each of the plurality of detection units includes a thin film transistor and an electrode, the thin film transistor is on the first base substrate and includes a gate electrode, a source electrode, and a drain electrode, and the electrode is on a side of the thin film transistor away from the first base substrate and is connected to the drain electrode, and the electrode is configured to carry a biological material to be detected.

Abstract: A joint bending state determining device comprises a sensor group and a processor. The sensor group comprises first and second gravity sensors. The first/second gravity sensor generates a first/second polar angle and a first/second azimuth angle. The processor obtains a first length corresponding to the first gravity sensor and a second length corresponding to the second gravity sensor, obtains a set of coordinates of a joint in a coordinate system according to the first polar angle, the first azimuth angle and the first length, obtains a set of coordinates of the second gravity sensor in the coordinate system according to the set of coordinates of the joint, the second polar angle, the second azimuth angle and the second length, and obtains a joint angle according to the set of coordinates of the second gravity sensor in the coordinate system, the first length and the second length.

Abstract: A patterning method of a film is disclosed. The method including: providing a film including a first surface; forming n etching barrier layers on the first surface of the film, and n is an integer larger than or equal to 2; and performing n etching processes on the film to form a recessed structure on the first surface using the n etching barrier layers as masks, the recessed structure includes n bottom surfaces respectively having different depths. Two adjacent etching processes of the n etching processes include a previous etching process and a subsequent etching process, and after the previous etching process is completed, a part of the n etching barrier layers is removed to form a mask for the subsequent etching process; a material of the part of the n etching barrier layers which is removed is different from a material of the mask of the subsequent etching process.

Abstract: The present invention provides a reference voltage buffer comprises a reference voltage generator, a first operational amplifier, a first transistor, a first group of resistors, a first load, a second transistor, a second group of resistors and a second load. In the reference voltage buffer, the first load and the second load use active device to increase the settling time, and the first load, the second load and the reference voltage generator of the reference voltage buffer are resigned to have the same characteristics in response to the temperature variation to overcome the PVT issue, and the first load and the second load of the reference voltage buffer use the open-loop design to have large full-scale of the output reference voltages.

Abstract: A computer-implemented method includes receiving, by an electronic device, a two-dimensional code generation request from a user operating the electronic device, the electronic device comprising secure element; obtaining, by the electronic device, two-dimensional code generation data, wherein the two-dimensional code generation data comprises account data of the user and timestamp data of the electronic device; obtaining, by the electronic device, signature data based on a predetermined signature algorithm stored in the secure element; and generating, by the electronic device, a target two-dimensional code based on the two-dimensional code generation data and the signature data.