Abstract: Provided are a new vertical cavity surface emitting laser structure and a manufacturing method thereof. The structure includes a substrate layer, a lower N-type DBR, an active region, an upper N-type DBR and a mixed dielectric DBR sequentially arranged from bottom to top, where a second-class tunnel junction is arranged on one side of the active region close to the upper N-type DBR, where the second-class tunnel junction is embedded in a bottom of the upper N-type DBR and surrounded by the upper N-type DBR, and the substrate layer, the lower N-type DBR, the active region, the upper N-type DBR, the mixed dielectric DBR and the second-class tunnel junction are all coaxial elliptical cylinders; negative electrodes are arranged on the lower N-type DBR, and positive electrodes are arranged on the upper N-type DBRs substrate layer.

Abstract: A wireless charging-based underwater energy rescue method for an autonomous underwater vehicle (AUV) cluster fully considers the actual situation of an AUV rescue system. For example, a rescue-side AUV takes speed as a constraint in order for rapid rescue, while a demand-side AUV takes minimum energy consumption as a constraint to select an optimal charging point. In addition, optimal path planning is performed in an environment with a dynamic disturbance such as a fish school. The wireless charging-based underwater energy rescue method combines path planning algorithms, namely rapidly-exploring random trees (RRT) and dynamic window approach (DWA), to achieve rapid and effective underwater energy rescue of AUVs.

Abstract: Disclosed are an imaging system and an imaging method thereof. The system includes a light source, a light source modulator, an objective lens, a sensor array, a sensor read-write module and an imaging display module connected with the sensor read-write module. The light source modulator is configured for modulating the light source to a preset frequency; the objective lens is configured for imaging an optical signal reflected by a surface of a target object on the sensor array; the sensor array is configured for converting the received optical signal into an analog alternating current electrical signal; the sensor read-write module is configured for amplifying the analog alternating current electrical signal and extracting a target signal, converting the target signal into a digital signal and storing the digital signal; and the imaging display module is configured for restoring and displaying an image of the target object according to the digital signal.

Abstract: A ground simulation device and method for an on-orbit manipulation of a space manipulator is provided. The ground simulation device includes: a dual-arm robot, configured to simulate the space manipulator operating a target object; a suspension device, including a fixed post and passive rods, where the passive rods are movably connected with a top end of the fixed post, and the target object is suspended to the passive rods; and a simulation platform, configured to fix the dual-arm robot and the suspension device thereon. The ground simulation device provides the passive rods on the suspension device and suspends the target object to the passive rods, thus overcoming the gravity of the target object. In addition, the passive rods can drive the target object to move under an influence of an external force, achieving a similar suspension effect to that in space, and providing a desired, safe, and reliable implementation effect.

Abstract: A ground simulation device and method for an on-orbit manipulation of a space manipulator is provided. The ground simulation device includes: a dual-arm robot, configured to simulate the space manipulator operating a target object; a suspension device, including a fixed post and passive rods, where the passive rods are movably connected with a top end of the fixed post, and the target object is suspended to the passive rods; and a simulation platform, configured to fix the dual-arm robot and the suspension device thereon. The ground simulation device provides the passive rods on the suspension device and suspends the target object to the passive rods, thus overcoming the gravity of the target object. In addition, the passive rods can drive the target object to move under an influence of an external force, achieving a similar suspension effect to that in space, and providing a desired, safe, and reliable implementation effect.

Abstract: The present disclosure provides a method and apparatus for simulating a physiological dynamic blood flow, a computer device and a storage medium. The method for simulating a physiological dynamic blood flow includes the following steps: acquiring related parameters of a cardio-aortic system in a complete cardiac cycle under a normal physiological state, and acquiring morphological and motion imaging data of the cardio-aortic system in the complete cardiac cycle; constructing a circulation dynamic loading function for cyclic dynamic contraction of a left ventricle; constructing a function between a left ventricular (LV) dynamic blood pressure and an LV dynamic volume; constructing a dynamic arterial blood flow volume function; constructing a cyclic opening and closing activation function of an aortic valve; and constructing a physiological dynamic blood flow model, and simulating the physiological dynamic blood flow according to the physiological dynamic blood flow model.