Abstract: The present disclosure belongs to the technical field of artificial cardiac pacemakers, and particularly relates to a leadless left-bundle-branch pacemaker. The leadless left-bundle-branch pacemaker comprises a case and an implant core, wherein the implant core is coaxially arranged inside the case, and a head of the implant core can be rotated out from the inside of the case; the implant core has an implant end that can be rotated out from the inside of the case, and the length of the implant end rotated out from the inside of the case is greater than 10 mm; and an end of the case corresponding to the implant end is provided with a fixing end for fixing the pacemaker.

Abstract: The embodiments of the present application relate to the technical field of integrated circuits, and specifically disclose a three-dimensional photonic chip architecture based on a VCSEL array, an application, and a method for calculating the structure of DNNs. The chip architecture comprises: a data input layer, used for generating two-dimensional optical data and inputting the optical data into a data processing layer; the data input layer being an addressable VCSEL array; a data processing layer, used for carrying out operations on the optical data inputted by the data input layer; a data output layer, used for collecting and outputting an operation result of the data processing layer; and the data input layer, the data processing layer and the data output layer being sequentially stacked to form the three-dimensional photonic chip architecture. The application can solve the computing power and power supply problems faced by AI operations.

Abstract: The present disclosure provides a multi-parameter calibration system for a spectrometer based on a nanosecond light source, including a main channel for outputting nuclear pulse signals, and a coincidence channel for outputting the nuclear pulse signals. Each channel uses current nuclear pulse signals to drive a light-emitting diode (LED) to emit nuclear pulse optical signals, and a simulated scintillator is irradiated to emit nanosecond nuclear pulse optical signals. The present disclosure can respectively test and calibrate multiple parameter performance indexes of the spectrometer throughput baseline restoration spectrometer. The stability of the spectrometer is tested and calibrated through output of certain regular nuclear pulse signals.

Abstract: The present disclosure belongs to the technical field of artificial cardiac pacemakers, and particularly relates to a leadless left-bundle-branch pacemaker. The leadless left-bundle-branch pacemaker comprises a case and an implant core, wherein the implant core is coaxially arranged inside the case, and a head of the implant core can be rotated out from the inside of the case; the implant core has an implant end that can be rotated out from the inside of the case, and the length of the implant end rotated out from the inside of the case is greater than 10 mm; and an end of the case corresponding to the implant end is provided with a fixing end for fixing the pacemaker.

Abstract: The present disclosure provides a nuclear detection simulation device based on a nanosecond light source and a nuclear signal inversion technology. Electronic circuits and nuclear pulse current signals are used to drive blue LEDs to emit nuclear pulse optical signals, so as to simulate a scintillator to receive ? radiation to emit light, and can simulate point sources and area sources, organic scintillator detectors and inorganic scintillators, scintillation efficiency and detection efficiency, radioactive sources, fast components and slow components, multi-type nuclear pulse signals, a statistical fluctuation phenomenon of nuclear pulses, the electron pair effect, the Compton effect, the photoelectric effect, and self-radiation of the scintillator, generate single or piled-up pulse signals, corresponding energy spectrum curves, and an environmental background spectral line. 3D visualization configuration and a nuclear signal detection process can be subjected to animated demonstration.

Abstract: The present disclosure provides a nuclear detection simulation device based on a nanosecond light source and a nuclear signal inversion technology. Electronic circuits and nuclear pulse current signals are used to drive blue LEDs to emit nuclear pulse optical signals, so as to simulate a scintillator to receive ? radiation to emit light, and can simulate point sources and area sources, organic scintillator detectors and inorganic scintillators, scintillation efficiency and detection efficiency, radioactive sources, fast components and slow components, multi-type nuclear pulse signals, a statistical fluctuation phenomenon of nuclear pulses, the electron pair effect, the Compton effect, the photoelectric effect, and self-radiation of the scintillator, generate single or piled-up pulse signals, corresponding energy spectrum curves, and an environmental background spectral line. 3D visualization configuration and a nuclear signal detection process can be subjected to animated demonstration.

Abstract: The present disclosure provides a multi-parameter calibration system for a spectrometer based on a nanosecond light source, including a main channel for outputting nuclear pulse signals, and a coincidence channel for outputting the nuclear pulse signals. Each channel uses current nuclear pulse signals to drive a light-emitting diode (LED) to emit nuclear pulse optical signals, and a simulated scintillator is irradiated to emit nanosecond nuclear pulse optical signals. The present disclosure can respectively test and calibrate multiple parameter performance indexes of the spectrometer throughput baseline restoration spectrometer. The stability of the spectrometer is tested and calibrated through output of certain regular nuclear pulse signals.

Abstract: An embedded package structure having a shielding cavity according to an embodiment of the present disclosure includes a device embedded in an insulating layer, and a shielding cavity enclosing the device, wherein the shielding cavity is defined by a shielding wall embedded in the insulating layer and surrounding the device on four sides, and first and second wiring layers which cover first and second end faces of the shielding wall and are electrically connected with the shielding wall; wherein a signal line leading-out opening is to formed between the first end face of the shielding wall and the first wiring layer, and a signal line connected with a terminal of the device is led, from the signal line leading-out opening, out of the shielding cavity.

Abstract: A method for manufacturing an interposer board without a feature layer structure according to an embodiment of the present invention may include preparing a temporary carrier; forming an edge seal for the temporary carrier; laminating an insulating material onto upper and lower surfaces of the temporary carrier to form an insulating layer; forming a via on the insulating layer, filling the via with a metal; and removing the edge seal and removing the temporary carrier. An interposer board without a feature layer structure according to an embodiment of the present invention may include an insulating layer and a via-post layer embedded in the insulating layer, wherein the via-post has an end used as a pad.

Abstract: An embedded package structure having a shielding cavity according to an embodiment of the present disclosure includes a device embedded in an insulating layer, and a shielding cavity enclosing the device, wherein the shielding cavity is defined by a shielding wall embedded in the insulating layer and surrounding the device on four sides, and first and second wiring layers which cover first and second end faces of the shielding wall and are electrically connected with the shielding wall; wherein a signal line leading-out opening is to formed between the first end face of the shielding wall and the first wiring layer, and a signal line connected with a terminal of the device is led, from the signal line leading-out opening, out of the shielding cavity.

Abstract: A method for manufacturing an interposer board without a feature layer structure according to an embodiment of the present invention may include preparing a temporary carrier; forming an edge seal for the temporary carrier; laminating an insulating material onto upper and lower surfaces of the temporary carrier to form an insulating layer; forming a via on the insulating layer, filling the via with a metal; and removing the edge seal and removing the temporary carrier. An interposer board without a feature layer structure according to an embodiment of the present invention may include an insulating layer and a via-post layer embedded in the insulating layer, wherein the via-post has an end used as a pad.

Abstract: A method of forming a porous graphene-based structure, including directing a laser beam onto one or more layers of graphene oxide to reduce at least a portion of the graphene oxide, wherein the laser beam consists of ultrafast femtosecond (fs) pulses of laser radiation to cause reduction of at least a portion of the graphene oxide by two-photon absorption and form one or more respective porous layers of reduced graphene oxide (rGO) having substantially uniform porosity. In some embodiments, the photoreduction of graphene oxide using the femtosecond laser beam is influenced by acoustic waves in addition to two-photon absorption.

Abstract: An armrest assembly includes an armrest and a lid mounted on the armrest for relative rotational movement between a closed and open positions. The lid includes a handle cradle with handle guides on opposed sides and an intermediate inner guide. A handle is located in the handle cradle for relative movement between a latch position and a release position. The handle includes a latch. The latch retains the lid in the closed position when the handle is in the latch position. The handle includes a clip that engages a slot on the lid to retain the handle in the handle cradle. The handle also includes guide channels on opposed sides. The guide channels engage the handle guides. The handle includes an intermediate inner guide space. The inner guide space engages the inner guide. The armrest assembly also includes a spring that biases the handle into the latch position.

Abstract: Provided are media, systems and methods for optical data storage. A nanocomposite material for use as an optical data recording medium comprises nanoparticles embedded in a host matrix, wherein the host matrix comprises a material having a high structural stability, and the nanoparticles comprise optical functional components having a first physical or chemical state and a property of permanent transition to a second physical or chemical state upon exposure to corresponding optical radiation, whereby information may be recorded in the first and second physical or chemical states of the optical functional components over an extended time period.

Abstract: Disclosed are a compressor applied to a refrigerator not having a cycle matching function or a refrigerator not including a controller, and capable of controlling a driving of a linear motor by the compressor itself, and a method for controlling the same.

Abstract: An armrest assembly includes an armrest and a lid mounted on the armrest for relative rotational movement between a closed and open positions. The lid includes a handle cradle with handle guides on opposed sides and an intermediate inner guide. A handle is located in the handle cradle for relative movement between a latch position and a release position. The handle includes a latch. The latch retains the lid in the closed position when the handle is in the latch position. The handle includes a clip that engages a slot on the lid to retain the handle in the handle cradle. The handle also includes guide channels on opposed sides. The guide channels engage the handle guides. The handle includes an intermediate inner guide space. The inner guide space engages the inner guide. The armrest assembly also includes a spring that biases the handle into the latch position.

Abstract: A photovoltaic (PV) structure for generating electrical power from light, the structure including an enhancing layer for increasing the absorption of the light into the structure, the enhancing layer including: a wrinkled graphene layer configured to trap the light in the PV structure; and aluminum nanoparticles configured to scatter the light into the PV structure.

Abstract: Methods and apparatus for recording and retrieval of optically readable data employ a recording medium (100) which comprises an optically active material (108) able to induce a change in properties of the medium in the presence of optical radiation having a first characteristic, such as a first optical frequency, and wherein the change in properties can be inhibited by optical radiation having a second characteristic, such as a second optical frequency. During recording, a region of the recording medium (100) is irradiated with a first beam (506) of optical radiation having the first characteristic, the beam having a sufficient intensity within a central portion of the irradiated region and being of sufficient duration to cause an optically induced change in properties of the recording medium.

Abstract: Provided are media, systems and methods for optical data storage. A nanocomposite material for use as an optical data recording medium comprises nanoparticles embedded in a host matrix, wherein the host matrix comprises a material having a high structural stability, and the nanoparticles comprise optical functional components having a first physical or chemical state and a property of permanent transition to a second physical or chemical state upon exposure to corresponding optical radiation, whereby information may be recorded in the first and second physical or chemical states of the optical functional components over an extended time period.

Abstract: Disclosed are a compressor applied to a refrigerator not having a cycle matching function or a refrigerator not including a controller, and capable of controlling a driving of a linear motor by the compressor itself, and a method for controlling the same.