Abstract ：

Optoelectronic synapses with fast response, low power consumption, and memory function hold great potential in the future of artificial intelligence technologies. Herein, a strategy of annealing in oxygen ambient at different temperatures is presented to improve the optoelectronic synaptic behaviors of acceptor-rich ZnO (A-ZnO) microtubes. The basic synaptic functions of as-grown and annealed A-ZnO microtubes including excitatory postsynaptic current (EPSC), short-term memory (STM) to long-term memory (LTM) conversion, and paired-pulse facilitation (PPF), were successfully emulated. The results show that the annealing temperature of 600 degrees C yields high figures of merit compared to other annealed A-ZnO microtubes. The 4-fold and 20-fold enhancement dependent on the light pulse duration time and energy density have been achieved in the 600 degrees C annealed A-ZnO microtube, respectively. Furthermore, the device exhibited a PPF index of up to 238% and achieved four cycles of "learning-forgetting" process, proving its capability for optical information storage. The free exciton (FX) and donor-acceptor pair (DAP) concentrations significantly influenced the persistent photoconductivity (PPC) behavior of A-ZnO microtubes. Therefore, the LTM response can be controlled by the adjustment of numbers, powers, and interval time of the optical stimulation. This work outlines a strategy to improve the EPSC response through defect control, representing a step towards applications in the field of optoelectronic synaptic device.

Keyword ：

Negative thermal quenching Optoelectrical synapse behaviors Annealing "Learning-experience" behavior

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Abstract ：

本发明公开了一种对助行安全异常自动采取保护方法，安置助行机器人驱动装置，机器人的移动通过电机驱动；助行机器人后端的把手部分安装有六轴力传感器，六轴力传感器检测三维空间坐标系中x, y, z三个方向的力Fx, Fy, Mz，及力矩Mx, My, Mz，据此识别使用者运动目的；使用者在两侧髋、膝、踝均安装了步态传感器，实时采集各自由度的角度、角速度步态数据；使用者推动助行机器人的把手部分，实现行走运动；如遇使用者摔倒等异常情况，助行机器人的驱动环节自动启动紧急保护机制，对机器人进行刹车停止。本发明针对使用者摔倒等异常情况采取安全保护策略，通过对使用者安全异常行为进行感知，针对安全异常情况，驱动装置自动采取刹车对使用者实施保护措施。

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Abstract ：

本发明公开了一种机械导纳控制驱动方法，该方法包括如下步骤，安置助行机器人驱动装置，机器人的移动通过电机驱动；助行机器人后端的把手部分安装有六轴力传感器；六轴力传感器检测三维空间坐标系中x, y, z三个方向的力Fx, Fy, Mz，及力矩Mx, My, Mz，据此识别使用者运动目的；助行机器人驱动装置根据使用者运动目的，控制电机驱动机器人按使用者的运动意图移动；由机械导纳控制助行机器人驱动装置，整体结构简单，使助行机器人移动的速度由使用者施加的力来控制，满足机器人助行、助力等多种控制模式的不同控制需求。

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Abstract ：

本发明公开了一种对助行安全异常自动采取保护方法，安置助行机器人驱动装置，机器人的移动通过电机驱动；助行机器人后端的把手部分安装有六轴力传感器，六轴力传感器检测三维空间坐标系中x, y, z三个方向的力Fx, Fy, Mz，及力矩Mx, My, Mz，据此识别使用者运动目的；使用者在两侧髋、膝、踝均安装了步态传感器，实时采集各自由度的角度、角速度步态数据；使用者推动助行机器人的把手部分，实现行走运动；如遇使用者摔倒等异常情况，助行机器人的驱动环节自动启动紧急保护机制，对机器人进行刹车停止。本发明针对使用者摔倒等异常情况采取安全保护策略，通过对使用者安全异常行为进行感知，针对安全异常情况，驱动装置自动采取刹车对使用者实施保护措施。

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本发明公开了一种法兰连接螺栓极限强度的校核方法，通过对法兰及连接螺栓的三维装配图进行网格划分等操作，建立有限元模型，对螺栓施加预紧力，下法兰侧的塔筒假体设置固定边界约束条件，在上法兰侧的塔筒假体上设置MPC约束，在法兰结合面中心分别施加Fx、Fy、Fz、Mx、My、Mz的单位载荷，进行分别求解计算，所施加的单位载荷的单位与法兰中心的极限载荷的单位一致，根据每个螺栓在各个单位载荷下的应力合成螺栓所受应力与六个载荷分量间的关系表达式，将各个极限工况下的极限载荷代入螺栓所受应力与六个载荷分量的关系式，即可得到各个极限工况下的螺栓应力结果。本发明可以得到各个极限工况下各螺栓的应力结果，计算高效可靠。

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In this paper, an auto-tuning piezoelectric energy harvester (PEH) based on the cantilever plate is presented by attaching a box to each corner of the free sides and placing a ball in each box. The prototype and supporting experimental fixtures were designed and manufactured. A series of hammering experiments are carried out to measure the natural frequency of the device according to different whole centroid position of the two balls. Seven excitation frequencies are selected to perform auto-tuning experiments, respectively. The two balls roll automatically to make the natural frequency of the structure consistent with the excitation, thereby resonating. The device is subjected to sweeping experiments. It can be seen from open circuit voltage-frequency and power-frequency diagrams that the auto-tuning PEH has a wider work frequency band as TFB and outputs higher voltage and power compared to cases where balls are fixed.

Keyword ：

43 Qv 60 Fx 38

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本发明涉及光子器件技术领域，具体是一种折射率可调的光栅耦合器的制作方法，其特征在于：光栅槽为不同横向占空比的亚波长结构，光栅为在纵向即x方向不同的x位置具有不同的横向即y方向占空比fy的光栅；光栅在纵向的占空比fx取值是在(0，1)之间的一个定值；构成纵向上不同x位置光栅槽的亚波长结构，其横向占空比fy的取值由输出高斯型场分布G(x)所需要的泄漏因子分布α(x)决定。该结构的光栅耦合器可以有效降低光纤和波导耦合时的耦合损耗。

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Abstract ：

In this note we point out that there is a compact Hausdorff separable monotonically Lindelof space which is not metrizable. If X is a monotonically meta-Lindelof regular space and has caliber wi, then X is hereditarily Linde lof. We prove that if X is a compact Hausdorff monotonically meta-Lindelof space then the following are equivalent: X is hereditarily Linde lof; X is perfect; D is perfect for any discrete subspace D of X; s(X) < w. We show that if X is a compact Hausdorff monotonically meta-Lindelof space and has caliber wi, then there do not exist an uncountable collection {U, : a E wi} of nonempty open subsets of X and a subset fx, y : a E wil of X such that: (1) x, E U, C U, C X \ {y} for each a E wi; (2) For each a E wi, the set {x0 yo,} C X \ U{U : 3 < al or {x, yo,} C n{Uo : /3 < a}. We also get some conclusions of monotonically meta-Lindelof spaces which are similar with some known conclusions of monotonically countably metacompact spaces. We show that if X is a regular monotonically countably metacompact space and 11 = {(10,: a E w1} is an uncountable collection of open sets of X such that X \Uo, is compact for each a E wi then 11 is not point-countable. Some known conclusions on monotonically countably metacompact spaces can be gotten by this conclusion.

Keyword ：

metrizable monotonically countably metacompact monotonically meta-Lindelof

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Abstract ：

In this paper, we investigated the photoluminescence property of ZnO films which were irradiated by KrFexcimer laser. Through the analysis of photoluminescence and UV-VIS spectra, it is shown that the red shift of band gap forthe irradiated sample. Room temperature UV photoluminescence of ZnO film is composed of contribution from the FX, the neutral donor bound exciton (D0X) emission and the longitudinal optical (LO) phonon replicas of the bound exciton transition (D0X-1LO). The visible emission band is ascribed to V0+,Vzn-,Oiand V0++ It shows that KrF laser irradiation could effectively modulate the exciton emission, which is important for the application of high performance of emitting optoelectronic devices. © (2014) Trans Tech Publications, Switzerland.

Keyword ：

Laser irradiation; Photoluminescence; ZnO thin film

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Abstract ：

本发明涉及光子器件技术领域，具体是一种折射率可调的光栅耦合器的制作方法，其特征在于：光栅槽为不同横向占空比的亚波长结构，光栅为在纵向即x方向不同的x位置具有不同的横向即y方向占空比fy的光栅；光栅在纵向的占空比fx取值是在(0，1)之间的一个定值；构成纵向上不同x位置光栅槽的亚波长结构，其横向占空比fy的取值由输出高斯型场分布G(x)所需要的泄漏因子分布α(x)决定。该结构的光栅耦合器可以有效降低光纤和波导耦合时的耦合损耗。

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