Surface Observation of Lapped and Polished HgCdTe Waferswith Scanning Electron Microscope

采用扫描电子显微镜分别观察了用不同研磨机研磨、抛光及其经溴-乙醇腐蚀的HgCdTE体单晶片的表面二次电子衬度像.观察表明，研磨造成的晶片表面可见损伤，经机械和溴-乙醇化学抛光后将减少和去除。然而，化学抛光却造成个别表面凹陷和凸出，这些凹凸可能是溴-乙醇对表层夹杂物和基质的腐蚀速度不同所致。HgCdTe wafer surfaces which were lapped, polished and etched with different process havebeen investigated with secondary electron contrast using a scanning electron microscope.The wafersurface damages were reduce by polishing and etching.But etch pits and projections were observedafter etching, which seems to be result of different etching rate of inclusions and matrix.国家自然科学基金;福建省自然科学基

微小水密连接器

本实用新型属于水下连接器领域，具体地说是一种应用在水下作业的微小水密连接器，该水密连接器安装在水下作业设备上面，插座具有壳体和位于第一橡胶硫化密封体内的插孔，插孔一端与导线连接，插孔另一端有独立的内腔，且内腔中包含环形凸起；插头的第二橡胶硫化密封体上具有插针，且每个插针底部都有独立的橡胶绝缘棒，插针的一端与电缆中的导线连接，另一端插设在插孔内，橡胶绝缘棒插在内腔中、与环形凸起密封抵接；第一橡胶硫化密封体的一端插入壳体内、并与壳体密封粘接，另一端位于壳体的外部，插针及橡胶绝缘棒均位于内螺纹锁紧螺帽的内部。本实用新型的插座与相对应的插头能在潮湿的环境下进行插拔，在浅海、深海中均能使用，且有可靠的密封性能

Underwater robot carries device with safe throwing

本实用新型涉及抛载装置，具体地说是一种水下机器人用安全抛载装置，通过直流电机经行星齿轮减速器减速后将力矩传递给抛载转轴，驱动转轮与开口轮同时转动；球头托件的球头在转轮与开口轮之间的环槽内滑动，等到开口轮转动到球头位置时，球头托件由于失去环槽的约束，在弹簧片的弹力作用下，球头托件与铅块同时被抛落；水下机器人在抛弃一部分质量后，其自身的重量小于浮力，故水下机器人能安全浮出水面。本实用新型具有结构简单紧凑，模块功能性强，成本低，外形尺寸小，水下密封性能良好，抛载安全可靠，可重复应用，易于安装在水下机器人上等优点

An underwater robot utility model is safe the carrier device

本发明涉及抛载装置，具体地说是一种水下机器人用安全抛载装置，通过直流电机经行星齿轮减速器减速后将力矩传递给抛载转轴，驱动转轮与开口轮同时转动；球头托件的球头在转轮与开口轮之间的环槽内滑动，等到开口轮转动到球头位置时，球头托件由于失去环槽的约束，在弹簧片的弹力作用下，球头托件与铅块同时被抛落；水下机器人在抛弃一部分质量后，其自身的重量小于浮力，故水下机器人能安全浮出水面。本发明具有结构简单紧凑，模块功能性强，成本低，外形尺寸小，水下密封性能良好，抛载安全可靠，可重复应用，易于安装在水下机器人上等优点。</p

水下滑翔机耐压壳体压缩变形的测量装置

本实用新型涉及一种水下滑翔机耐压壳体压缩变形的测量装置，通过测量耐压壳体受外压时其内部腔体的体积变化量，进而得到耐压壳体的压缩变形量；测量装置包括底部端盖、耐压壳体、顶部端盖、进水丝堵、插装式单向阀、容水器、容水器端盖及容水器丝堵，耐压壳体的两端分别与底部端盖、顶部端盖相连，容水器一端与顶部端盖螺纹连接、内孔中安装有单向阀，另一端与容水器端盖通过固连；通过对本实用新型进行加压，测量泄压后容水器中水的体积，即可得到该压力下耐压壳体的压缩变形量。本实用新型可以定量地测得水下滑翔机在不同压力下耐压壳体的压缩变形量，结构简单可靠，操作简便，测量结果精确

Rolling diaphragm formula buoyancy regulating device for underwater robot

本实用新型涉及浮力调节装置，具体地说是一种水下机器人用滚动膜片式浮力调节装置，固定筒位于耐压舱体的内部，固定筒的一端及耐压缸体的一端均安装在耐压舱体的同一端，耐压缸体的另一端连接有带排水口的缸帽；固定筒的另一端安装有轴承座，滚珠丝杠与轴承座转动连接，动力源通过固定座安装在轴承座上，并与滚珠丝杠相连；活塞杆位于耐压缸体与固定筒的内部，一端与滚珠丝杠上螺纹连接的丝杠螺母相连，另一端连接有活塞，滚动膜片安装在活塞上，边缘压紧在缸帽与耐压缸体之间；直线电位计安装在固定座上，直线电位计的拉杆与安装在活塞杆一端的测位连接件相连。本实用新型具有结构紧凑、工作可靠、高效率、响应快、高精度等特点

An underwater robot for rolling film type floating force regulating device

本发明涉及浮力调节装置，具体地说是一种水下机器人用滚动膜片式浮力调节装置，固定筒位于耐压舱体的内部，固定筒的一端及耐压缸体的一端均安装在耐压舱体的同一端，耐压缸体的另一端连接有带排水口的缸帽；固定筒的另一端安装有轴承座，滚珠丝杠与轴承座转动连接，动力源通过固定座安装在轴承座上，并与滚珠丝杠相连；活塞杆位于耐压缸体与固定筒的内部，一端与滚珠丝杠上螺纹连接的丝杠螺母相连，另一端连接有活塞，滚动膜片安装在活塞上，边缘压紧在缸帽与耐压缸体之间；直线电位计安装在固定座上，直线电位计的拉杆与安装在活塞杆一端的测位连接件相连。本发明具有结构紧凑、工作可靠、高效率、响应快、高精度等特点

Underwater robot carries device with safe throwing

本实用新型涉及抛载装置，具体地说是一种水下机器人用安全抛载装置，通过直流电机经行星齿轮减速器减速后将力矩传递给抛载转轴，驱动转轮与开口轮同时转动；球头托件的球头在转轮与开口轮之间的环槽内滑动，等到开口轮转动到球头位置时，球头托件由于失去环槽的约束，在弹簧片的弹力作用下，球头托件与铅块同时被抛落；水下机器人在抛弃一部分质量后，其自身的重量小于浮力，故水下机器人能安全浮出水面。本实用新型具有结构简单紧凑，模块功能性强，成本低，外形尺寸小，水下密封性能良好，抛载安全可靠，可重复应用，易于安装在水下机器人上等优点

DeepStSNet: Reconstructing the quantum state-resolved thermochemical nonequilibrium flowfield using deep neural operator learning with scarce data

The hypersonic flow is in a thermochemical nonequilibrium state due to the high temperature caused by the strong shock compression. In a thermochemical nonequilibrium flow, the distribution of molecular internal energy levels strongly deviates from the equilibrium distribution (i.e., the Boltzmann distribution). It is intractable to directly obtain the microscopic nonequilibrium distribution from existed experimental measurements usually described by macroscopic field variables such as temperature or velocity. Motivated by the idea of deep multi-scale multi-physics neural network (DeepMMNet) proposed in [1], we develop in this paper a data assimilation framework called DeepStSNet to accurately reconstruct the quantum state-resolved thermochemical nonequilibrium flowfield by using sparse experimental measurements of vibrational temperature and pre trained deep neural operator networks (DeepONets). In particular, we first construct several DeepONets to express the coupled dynamics between field variables in the thermochemical nonequilibrium flow and to approximate the state-to-state (StS) approach, which traces the variation of each vibrational level of molecule accurately. These proposed DeepONets are then trained by using the numerical simulation data, and would later be served as building blocks for the DeepStSNet. We demonstrate the effectiveness and accuracy of DeepONets with different test cases showing that the density and energy of vibrational groups as well as the temperature and velocity fields are predicted with high accuracy. We then extend the architectures of DeepMMNet by considering a simplified thermochemical nonequilibrium model, i.e., the 2T model, showing that the entire thermochemical nonequilibrium flowfield is well predicted by using scattered measurements of full or even partial field variables. We next consider a more accurate and complex thermochemical nonequilibrium model, i.e., the StS-CGM model, and develop a DeepStSNet for this model. In this case, we employ the coarse-grained method, which divides the vibrational levels into groups (vibrational bins), to alleviate the computational cost for the StS approach in order to achieve a fast but reliable prediction with DeepStSNet. We test the present DeepStSNet framework with sparse numerical simulation data showing that the predictions are in excellent agreement with the reference data for test cases. We further employ the DeepStSNet to assimilate a few experimental measurements of vibrational temperature obtained from the shock tube experiment, and the detailed non-Boltzmann vibrational distribution of molecule oxygen is reconstructed by using the sparse experimental data for the first time. Moreover, by considering the inevitable uncertainty in the experimental data, an average strategy in the predicting procedure is proposed to obtain the most probable predicted fields. The present DeepStSNet is general and robust, and can be applied to build a bridge from sparse measurements of macroscopic field variables to a microscopic quantum state-resolved flowfield. This kind of reconstruction is beneficial for exploiting the experimental measurements and uncovering the hidden physicochemical processes in hypersonic flows. & COPY; 2023 Elsevier Inc. All rights reserved

掺铒富硅氧化硅薄膜的光致发光

该文研究了富硅氧化硅薄膜掺入铒的发光特性。富硅氧化硅薄膜(氧含量为60%)采用PECVD方法生长，室温下离子注入铒，经过800℃，5min的退火，在10－～300K温度下得到较强的波长1.54μm光致发光。发光强度随温度升高下降，其温度猝灭激活能为14.3meV。发光谱表明富硅氧化硅中Er-O发光中心仍具有T_d对称性