铝电解电容器用支链多碳二元羧酸铵电解液的研究

实验合成了支链多碳二元羧酸(SCPDA),并研究了其性能.结果表明:SCPDA的分解温度超过200℃,耐热稳定性比癸二酸好.相同条件下,支链多碳二元羧酸铵(SCPDAA)电解液的性能(030℃≈1.9×10-3 S/cm,Us=483 V,pH=6.0)比癸二酸铵电解液(σ30℃≈1.7×10-3 S/cm,Us=46...     

引线式闪光灯铝电解电容器的研制

从原材料、生产工艺、电解液等方面入手，探索闪光灯铝电解电容器的设计与生产工艺。介绍了以乙二醇与乙二醇甲醚作溶剂，癸二酸铵、己二酸铵为溶质的适用于闪光灯电容器的工作电解液。指出闪光灯电容器用阳极箔国产化的迫切性。     

节能灯用铝电解电容器工作电解液配方研究

以十二双酸铵、对硝基苯甲酸、次亚磷酸和高分子添加剂PA四种组分为考察因素,采用单纯形法进行试验设计,研究了节能灯用铝电解电容器的工作电解液的配方.结果表明,当乙二醇质量分数(下同)为93%,癸二酸铵为4.14%,十二双酸铵为0.9%,对硝基苯甲酸为0.16%,次亚磷酸为0.2%,高分子添加剂为1.6%时,制备的铝电解电...     

电子节能灯用高压铝电解电容器的研制

为了提高电子节能灯用高压铝电解电容器的高温高压稳定性,以及耐大纹波电流冲击的特性,采用γ-丁内酯与乙二醇混合溶剂,1,7-癸二酸铵和1,6-十二双酸铵的双溶质体系的工作电解液,并加入适当的添加剂,优化了生产工艺,研制出的产品通过了105℃整灯过压试验3 000 h考核。     

450V高压工作电解液的研究

用癸二酸铵作主溶质,通过多种添加剂的共同作用,成功地开发出可用于450 V高压铝电解电容器工作电解液,将此电解液用于450 V、1 000 mF电解电容器中,经过105℃1 000 h寿命试验,并取得良好的试验结果。     

宽温、高压工作电解液的研制

介绍了混合溶剂体系,高压(350~400 V)、宽温(40 ~ +105℃)工作电解液的研制。发现以癸二酸铵作主溶质,添加适当副溶质GPA及优质添加剂的电解液具有耐腐蚀、高闪火电压、高氧化效率及高稳定等特点。用此电解液制作CD293X(400 V 220 mF)规格的电容器通过了105℃、1 000 h负荷寿命试验和105 ℃、500 h的高温贮存试验。     

氧气的析出对多孔膜形成的影响

研究了纯铝在磷酸二氢铵(A)和癸二酸铵/硼酸(B)溶液中的阳极氧化,通过阳极氧化曲线的测定及氧化膜的SEM表面照片分析,研究了多孔膜生长的全过程。结果表明在阻挡膜/电解液界面上氧气的析出是造成多孔膜形成的前驱点。阻挡膜转变成多孔膜是先形成沟槽,而后在沟槽中形成多孔。A电解液中,在115V下得到多孔氧化膜,孔径150nm。B电解液中在445V下得到孔径为55nm的多孔膜。     

混合支链多元羧酸铵型电解液制备及应用

研制了以支链多元羧酸铵混合物为主电解质、癸二酸铵为辅助电解质、乙二醇和二甘醇为混合溶剂的工作电解液(σ30℃≈2.2×10–3S/cm,Us≥480V,pH值为5.8～6.3),并以此制备了铝电解电容器(400V、4.7μF(φ10mm×17mm));采用纹波实验和整灯实验方法考察了制得的铝电解电容器的性能。结果表明:所制得的电容器具有低漏电流、耐大纹波电流、耐高频和高温长寿命性能;采用该电容器的电子节能灯可通过125℃,3000h的整灯试验考核。     

无卤助焊膏用活性剂的选择及优化

针对Sn-Ag-Cu系列焊料开发出了一种无卤素助焊膏,着重探讨了无卤助焊膏中活性剂的选择及优化方法。通过对十种活性剂所配制的助焊膏的扩展率、锡珠、焊点情况进行测试,结合各活性剂的热质量损失(TGA)曲线,最终选择了己二酸、癸二酸和苯基丁二酸三种活性剂,并通过正交方法对其进行复配试验。结果表明有机酸的复配能够显著改善焊点铺展情况,当己二酸、癸二酸和苯基丁二酸质量比为1:4:3时,扩展率达75.36%,所得焊点饱满、光亮,且无锡珠产生。     

硫铵滚筒干燥器自动测控系统的应用研究

简述了硫铵滚筒干燥器的干燥原理及工艺流程,提出自动测控系统的控制要求及实现方案配置,给出了硫铵含水量控制调节、干燥器出口微负压控制调节、水溶雾沫除尘器等几个关键环节的测控原理及控制过程。     

Resolution Enhancement Technology:Integrated Process Solutions using OPC

DUV lithography, using the 248 nm wavelength, is a viable manufacturing option for devices with features at 130 nm and less. Given the low kl value of the lithography, integrated process development is a necessary method for achieving acceptable process latitude. The application of assist features for rule based OPC requires the simultaneous optimization of the mask, illumination optics and the resist.Described in this paper are the details involved in optimizing each of these aspects for line and space imaging.A reference pitch is first chosen to determine how the optics will be set. The ideal sigma setting is determined by a simple geometrically derived expression. The inner and outer machine settings are determined, in turn,with the simulation of a figure of merit. The maximum value of the response surface of this FOM occurs at the optimal sigma settings. Experimental confirmation of this is shown in the paper.Assist features are used to modify the aerial image of the more isolated images on the mask. The effect that the diffraction of the scattering bars (SBs) has on the image intensity distribution is explained. Rules for determining the size and placement of SBs are also given.Resist is optimized for use with off-axis illumination and assist features. A general explanation of the material' s effect is discussed along with the affect on the through-pitch bias. The paper culminates with the showing of the lithographic results from the fully optimized system.     

Cost-effective test solutions for smart card and other integrated flash applications

From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test.     

Theoretical analysis of the relationship between the Brillouin gain coefficient and the strain in the optical-fiber sensors

The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation.     

An improved parallel thinning algorithm with two subiterations

The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high.     

Novel fiber-optical interferometer with miniaturized probe for in-hole measurements

Today, micro-system technology and the development of new MEMS （Micro-Electro-Mechanical Systems） are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible.     

Study of waveguide coupling efficiency in hybrid silicon lasers

This paper presents a new method to increase the waveguide coupling efficiency in hybrid silicon lasers. We find that the propagation constant of the InGaAsP emitting layer can be equal to that of the Si resonant layer through improving the design size of the InP waveguide. The coupling power achieves 42% of the total power in the hybrid lasers when the thickness of the bonding layer is 100 nm. Our result is very close to 50% of the total power reported by Intel when the thickness of the thin bonding layer is less than 5 nm. Therefore, our invariable coupling power technique is simpler than Intel＇s.     

Teleportation of an arbitrary unknown N-qubit entangled state under the controlling of M controllers

A new quantum protocol to teleport an arbitrary unknown N-qubit entangled state from a sender to a fixed receiver under M controllers(M < N) is proposed. The quantum resources required are M non-maximally entangled Greenberger-Home-Zeilinger (GHZ) state and N-M non-maximally entangled Einstein-Podolsky-Rosen (EPR) pairs. The sender performs N generalized Bell-state measurements on the 2N particles. Controllers take M single-particle measurement along x-axis, and the receiver needs to introduce one auxiliary two-level particle to extract quantum information probabilistically with the fidelity unit if controllers cooperate with it.     

A rigorous proof of MIMO channel capacity’s increase with antenna number

It is well known that adding more antennas at the transmitter or at the receiver may offer larger channel capacity in the multiple-input multiple-output（MIMO） communication systems. In this letter, a simple proof is presented for the fact that the channel capacity increases with an increase in the number of receiving antennas. The proof is based on the famous capacity formula of Foschini and Gans with matrix theory.     

Diode-end-pumped Nd:YVO4/LBO lasers with 4.2W continuous-wave output at 457 nm

A continuous-wave (CW) 457 nm blue laser operating at the power of 4.2 W is demonstrated by using a fiber coupled laser diode module pumped Nd: YVO4 and using LBO as the intra-cavity SHG crystal With the optimization of laser cavity and crystal parameters, the laser operates at a very high efficiency. When the pumping power is about 31 W, the output at 457nm reaches 4.2 W, and the optical to optical conversion efficiency is about 13.5% accordingly. The stability of the out putpower is better than 1.2% for 8 h continuously working.     

Call for Papers

正Wireless Body-area Networks The last decade has witnessed the convergence of three giant worlds:electronics,computer science and telecommunications.The next decade should follow this convergence in most of our activities with the generalization of sensor networks.In particular with the progress in medicine,people live longer and the aging of population will push the development of wireless personal networks