极限风筝浅接触 被风筝放飞

牵引风筝（Traction Kites）是借助飞行伞的滑翔力和特技风筝的可控性于一身的一项极富挑战的运动．集技巧、力量、勇气于一身，让你瞬间体验被风筝拉起1～50米的感觉．同时可以借助山地滑板、冲浪板．轮滑、风筝车．在空中做出各种高难动作。牵引风筝主要是在陆地玩，风筝从3～17平米不等，根据人、风力选择不同的风筝。一般儿童，初学者选用3平米的牵引风筝练习．中级者可以选用5-9平米（风力超过4级时也可以腾空），高级者可以选用10～17平米（风力在2级时可以起飞．高手可以选择大风筝玩空中表演动作）。牵引风筝借助软体风筝．由4线控制，     

振动球磨机最佳工艺参数的选择及其破碎机理的探讨

本文根据在四罐干式小型振动球磨机中的系统工艺试验,确定了该机在干式球磨时的各项工艺参数。其最佳值为:装填系数70％(体积),球料比2∶1 (体积),最大球径φ1.43厘米,大小球之比4∶1,球磨时间2小时。采用上述工艺参数可以保证该机在粉碎脆性物料时,具有最大的生产效率。文中结合实验数据对振动球磨的机理进行了初步探讨。     

BaWO4掺杂对BMT陶瓷介电性能的影响

采用传统电子陶瓷工艺合成了BaWO4掺杂的Ba(Mg1/3Ta2/3)O3( BMT)微波介质陶瓷,研究了质量分数w(BaWO4)从2％～8％变化对BMT微波介质陶瓷结构和微波特性的影响.实验结果表明:添加少量的BaWO4能明显改善BMT陶瓷的烧结性能,当w(BaWO4)=4％时,BMT陶瓷的烧结温度由纯相时的1650...     

B型管座局部鍍金工艺研究

我厂每年耗金量15～20公斤左右,应用局部镀金工艺生产B型管座比原工艺节省金80～90％并满足了工艺和技术上的各项要求。大大的提高了金的有效利用率,降低了产品成本70～80％。     

一种适于LSI及浅结器件的硅片表面加工技术

通过氧本征内吸杂工艺前后硅片的实际器件制管试验、少子寿命测试及吸杂硅片的纵向解剖，制管性能大大改善，管芯平均制造合格率提高５％～１５％，硅片表面少子寿命提高一个数量级以上。另外研究还表明，吸杂硅片经高温氧化、扩散等器件工艺后，硅片表面清洁区厚度及吸杂区内缺陷密度基本是稳定的。     

室温连续工作的商台型GaAs—Al_x Ga_(1-x)As双异质结激光器的研制

介绍了室温连续工作的高台型 GaAs—Al_xGa_(1-x)As 双异质结激光器的设计考虑,研制过程和结果。在理论设计考虑方面谈到了降低阈值电流密度和模式控制,改善调制特性,控制激射的峰值波长以及提高输出功率和效率诸方面对于材料选择,外延片结构设计,激光器结构参数的选择方面应当遵循的基本原则。为了提高激光器的寿命,在工艺上采取了降低外延中 H_2中含 O_2量,进行充 N_2密封操作,使用新设计成功的挤压刮源式石墨舟,增加限制层 Al 含量及在有源区掺进少量 Al 等措施获得高质量外延片。在后部工艺,采用 P 面进行 P~ Zn 扩散,改善淀积的 PSG—SiO_2双重膜的质量,改进光刻精度,改进欧姆接触和装架工艺,减沾少污和引入的应力和损伤等项工艺措施,这样获得了主要电光参数较好,寿命超过200小时的室温连续工作的高台型 GaAs—Al_xGa_(1-x)As双异质结激光器。     

LCD驱动中的带隙基准电压源的设计与实现

介绍一种用于LCD驱动中的带隙基准电压源，采用Chartered 3．3V 0．35μm　18V高压CMOS工艺，产生5个不同的负温度系数．以便于LCD　panel的选择。电源工作范围2．4V～3．6V，工作温度范-40％～85％。     

多晶硅发射极晶体管放大系数稳定性研究

通过对NPN型多晶硅发射极晶体管的工艺过程进行分析,对多晶淀积工艺过程提出严格的控制方案,使多晶界面氧化层厚度稳定在0.6～0.8 nm.同时,对基区与发射区退火工艺进行优化,使多晶发射极晶体管放大系数的片内均匀性从30％改善至20％,片间均匀性从12％改善至9％,显著提升了产品的成品率.     

一种控制硅深刻蚀损伤方法的研究

提出了提高硅深反应离子刻蚀的新方法.该方法在硅的侧壁PECVD淀积SiO2,硅的底部采用热氧化的方法形成SiO2.由于在刻蚀中硅与SiO2的刻蚀选择比为120:1～125:1,因此SiO2层可以抑制在硅-玻璃结构的刻蚀中出现的lag和footing效应,扫描电镜结果也证明,采用改进工艺后的硅结构在经过长时间的过刻蚀后仍然保持了完整性.硅陀螺测试结果也证明了改进工艺的正确性.     

多谱Hg_(1-x)Cd_xTe光伏探测器

本文报导高性能三波段Hg_(1-x)Cd_xTe光伏探测器的制作工艺和特性。在77K分别测得上部、中间及底部元件在1～2、3～5及8～12微米波段的峰探测度为1.2×10~(12)、9.7×10~(11)及5.3×10~(10)厘米·赫~(1╱2)瓦~(-1)。在峰值波长时,外量子效率为75％、62％及51％。     

利用山西优质炼焦煤研制高密度铸造焦

阐述了以山西省优质炼焦煤为主要原料,开发出了生产高密度特级铸造焦技术,提出以山西省优质炼焦煤资源为优势,发展高密度铸造焦生产,是将资源优势转化为经济优势的有效和现实的途径。     

Integrated Photo‐supercapacitor Based on Bi‐polar TiO2 Nanotube Arrays with Selective One‐Side Plasma‐Assisted Hydrogenation

One‐dimensional anodic titanium oxide (ATO) nanotube arrays hold great potential as electrode materials for both dye‐sensitized solar cells (DSSCs) and electrochemical supercapacitors (SCs). In this work, a novel stack‐integrated photo‐supercapacitor (PSC) thin‐film device is presented, composed of a DSSC and a SC built on bi‐polar ATO nanotube arrays, where an improved SC performance is achieved through selective plasma‐assisted hydrogenation treatment. At a high current density of 1 mA/cm² in charge/discharge measurements, the areal capacitance of selective hydrogenated ATO two‐electrode sub‐device is substantially increased ～5.1 times, with the value as high as 1.100 mF/cm². The optimized PSC exhibits a remarkable overall photoelectric conversion and storage efficiency up to 1.64%, with fast response and superior cycling capability for more than 100 photocharge/galvanostatic discharge cycles without any decay. To meet applicable demands with a larger output voltage, a tandem PSC system is constructed, serving as the self‐driven power source for an LED.     

煤灰成分和煤灰熔融性的关系

系统地研定了中国煤的灰熔融性软化温度ST和流动温度FT与煤灰中SiO_2、Al_2O_3、Fe_2O_3、CaO等主要成分间的关系。并推导出了利用煤灰成分计算煤灰熔融性ST和FT的一组多元回归式。这些回归式的精度达到较高的水平,具有广泛的实用价值和推广价值。     

Multifunctional Small Molecule as Buried Interface Passivator for Efficient Planar Perovskite Solar Cells

The improvement of power conversion efficiency (PCE) and stability of the perovskite solar cell (PSC) is hindered by carrier recombination originating from the defects at the buried interface of the PSC. It is crucial to suppress the nonradiative recombination and facilitate carrier transfer in PSC via interface engineering. Herein, P-biguanylbenzoic acid hydrochloride (PBGH) is developed to modify the tin oxide (SnO₂)/perovskite interface. The effects of PBGH on carrier transportation, perovskite growth, defect passivation, and PSC performance are systematically investigated. On the one hand, the PBGH can effectively passivate the trap states of Sn dangling bonds and O vacancies on the SnO₂ surface via Lewis acid/base coordination, which is conducive to improving the conductivity of SnO₂ film and accelerating the electron extraction. On the other hand, PBGH modification assists the formation of high-quality perovskite film with low defect density due to its strong interaction with PbI₂. Consequently, the PBGH-modified PSC exhibits a champion power conversion efficiency (PCE) of 24.79%, which is one of the highest PCEs among all the FACsPbI₃-based PSCs reported to date. In addition, the stabilities of perovskite films and devices under high temperature/humidity and light illumination conditions are also systematically studied.     

Improvement of the kink-free operation in ridge-waveguide laser diodes due to coupling of the optical field to the metal layers outside the ridge

The kink-free output power in 980-nm emitting laser diodes can be increased by 30%-50% in ridge-waveguide devices when the thickness of the oxide is decreased such that the optical field is allowed to interact with the lossy Ti-PtAu metallization outside the ridge. This provides selective loss for the first-order lateral mode and delays the onset of the beam steering associated with kinks in the power output-current characteristic. The method is very simple and can be applied for any kind of ridge-waveguide semiconductor laser diode device.     

洁净煤技术是煤炭工业可持续发展的重要支柱

煤炭未来还将是中国主要能源。洁净煤技术是煤炭工业可持续发展的重要支柱。煤炭工业可持续发展的工程技术体系可考虑以洁净煤技术为核心,通过发展优质煤工程、煤化工工程、高效洁净燃烧与坑口电站工程和洁净矿区工程,并以这4项工程的适当组合形成煤炭综合发展基地。发展洁净煤技术要求转变观念、以相应法律为后盾并制定配套的政策。     

Ternary Polymer Solar Cells with High Efficiency of 14.24% by Integrating Two Well‐Complementary Nonfullerene Acceptors

Ternary polymer solar cells (PSCs) are one of the most promising device architectures that maintains the simplicity of single‐junction devices and provides an important platform to better tailor the multiple performance parameters of PSCs. Herein, a ternary PSC system is reported employing a wide bandgap polymeric donor (PBTA‐PS) and two small molecular nonfullerene acceptors (labeled as LA1 and 6TIC). LA1 and 6TIC keep not only well‐matched absorption profiles but also the rational crystallization properties. As a result, the optimal ternary PSC delivers a state of the art power conversion efficiency (PCE) of 14.24%, over 40% higher than the two binary devices, resulting from the prominently increased short‐circuit current density (J_sc) of 22.33 mA cm^?2, moderate open‐circuit voltage (V_oc) of 0.84 V, and a superior fill factor approaching 76%. Notably, the outstanding PCE of the ternary PSC ranks one of the best among the reported ternary solar cells. The greatly improved performance of ternary PSCs mainly derives from combining the complementary properties such as absorption and crystallinity. This work highlights the great importance of the rational design of matched acceptors toward highly efficient ternary PSCs.     

Fabricating high performance polymer photovoltaic modules by creating large-scale uniform films

A spray-coating method, named as partially overlapped spray-coating (POSC) with winding path, was developed to deposit homogenous film over large area and employed to fabricate polymer solar cell (PSC) modules. The photoactive layer consisting of the conjugated polymer PBTI3T and the fullerene derivative PCBM[70] was obtained by optimizing the ink formulations and spray-coating parameters, which determines the morphology and film thickness. The lab-scale PSC (0.09 cm²) fabricated by the POSC technique achieved a power conversion efficiency (PCE) of 6.63%, which is comparable to the spin-coated one. The POSC technique was then applied to up-scaling fabrication of PSC modules. A PCE as high as 5.27% was achieved for the module with 38.5 cm² photoactive area, which is so far the highest one with comparable size, to the best of our knowledge. It shows the POSC technique developed in this work is very successful for fabricating high-performance PSC modules, which paves a new way for film deposition in continuous roll-to-roll production.     

煤矿井下水泵电机辐射电磁骚扰测试研究

煤矿井下由于高压、大功率机电设备众多,启停频繁,导致井下电磁干扰严重。本文针对井下电机类 设备的辐射电磁骚扰,分析了旋转电机的电磁兼容辐射发射限值,以及井下实验测试要求和方法,并对井下水泵电 机的辐射电磁骚扰进行了现场测试。测试结果表明:水泵电机在正常稳定运行时的辐射电场较弱,在整个测量频段 内没有明显的噪声突起;在电动机启停阶段,辐射电磁骚扰较强,辐射频谱达到2 GHz,主要辐射频谱在500 MHz 以 内,尤其在频段1 ~10 MHz 之内辐射电场强度达到最大。因此,煤矿井下工频电源驱动的电动机类设备的辐射电磁 骚扰主要是启停阶段产生的瞬态辐射干扰,稳定运行时辐射电磁骚扰对井下电磁环境的影响较小。     

Large matrix polymer solar cells fabricated by low cost air-brush spray deposition

In this paper, a 64 mm×64 mm matrix polymer solar cell (PSC) was fabricated by air-brush spray deposition. Although the open-circuit voltage (Voc) and the fill factor (FF) both need to be improved, the efficiency of matrix PSCs still reaches about 1.82%, and especially the current density achieves nearly 20 mA/cm2. The results verify that air-brush spray deposition is a suitable method to prepare large area PSC devices, and the process we use in this paper can be easily transplanted to roll-to-roll production.