离子束合成TiSi2薄膜及显微结构的研究

本文主要以电子显微镜为手段研究了离子注入形成的ＴｉＳｉ２薄膜的微观结构，发现了一种新的ＴｉＳｉ２相，初步确定它为简单正交结构，点阵常数与已知的Ｃ４９－ＴｉＳｉ２相等，并发现新的ＴｉＳｉ２可向Ｃ４９－ＴｉＳｉ２转化；在８００℃条件下保温３０分钟，Ｃ５４－ＴｉＳｉ２可在Ｓｉ（１１１）基片上外延生长，取向关系为：「１２１」ＴｉＳｉ２「１１０」ｓｉ，（１１１）ＴｉＳｉ２（１１１）ｓｉ。     

有限域GF（2^m）上的一个新的求逆算法

根据有限域ＧＦ（２＾ｍ）上的正规基表示和Ｍａｓｓｅｙ－Ｏｍｕｒａ乘法器，本文提出了一个复杂性为Ｏ（ｌｏｇｍ）的求逆算法。新算法完成一次求逆运算只需要「ｌｏｇ２（ｍ－１）」＋ｗ（ｍ－１）－１次乘法和ｍ－１次循环移位，这里「ｘ」表示小于等于ｘ的最大整数，ｗ（ｍ－１）表示ｍ－１的二进制表示中“１”的个数。     

掺杂对光折变晶体性能的影响

以钛酸钡，铌酸锶钡和铌酸钾钡锶钡「（Ｋ１－６Ｎａｙ）０．４（ＳｒｘＢａ１－ｘ）０．８Ｎｂ２Ｏ６，ＫＮＳＢＮ」为例，评述掺杂对提高光折变晶体性能的重要作用。     

9Ni钢中马氏体孪晶界面结构研究

本文和电子显微研究了９Ｎｉ钢中马氏体孪晶界面精细结构，结果表明，马氏体孪晶不是平直的孪生面（１１２），而是由一系列以享生面（１１２）为平台的小平面组成的台阶状或凹凸不平的界面。小平面大多沿「１１０」方向形成，沿「１１１」方向较少形成。     

富勒烯衍生物的超快光限幅特性研究

应用倍频Ｎｄ：ＹＡＧ脉冲激光，在波长为５３２ｎｍ，脉冲宽庶２３ｐｓ的条件下，研究了面式和径式－「双（１，２－二本基膦基）－２」（三羰基）（η＾２－Ｃ６０）铬（ｆａｃ－ａｎｄ ｍｅｒ－「ｂｉｓ（１，２－ｄｉｐｈｅｎｙｌｐｈｏｓｐｈｉｎｏ）ｅｔｈａｎｅ」（ｔｒｉｃａｒｂｏｎｙｌ）η＾２－ｆｕｌｌｅｒｅｎｅ－Ｃ６０）ｃｈｒｏｍｉｕｍ）的光限幅特性。并应用单重态激发态吸收理论对实验结果进行了分析，实验结果     

离子注入硅的微均匀性测量

离子注入硅的微均匀性测量＝Ｍｉ－ｃｒｏｕｎｉｆｏｒｍｉｔｙｍｅａｓｕｒｅｍｅｎｔｓｏｆｉｏｎｉｍｐｌａｎｔｅｄｓｉｌｉ－ｃｏｎ［刊，英］／Ｃｕｒｒｅｎｔ．Ｍ．Ｉ．…∥ＳｏｌｉｄｓｔａｔｅＴｅｃｈ－ｎｏｌ，－１９９３．３６（７）．－１１１～１１９讨论了...     

La—Ca—Mn—O薄膜的巨磁效应

报道了Ｃａ掺杂量对Ｌａ－Ｃａ－Ｍｎ－Ｏ巨磁薄膜材料的巨磁效应影响，测量薄膜电阻（外磁场强度Ｈ＝０．５Ｔ）磁化强度，温度关系曲线，认为Ｌａ１－ｘＣａｘＭｎＯ３体系中Ｍｎ＾４＋的含量是由于掺杂量Ｃａ的调制Ｍｎ＾４＋的含量变化导致磁性结构转变，用双交换模型解释了该象现，对实验给出满意的解释。     

InGaAsP及其量子阱结构的LP－MOCVD

报道了用低压金属有机化学汽相淀积（ＬＰ－ＭＯＣＶＤ）技术在（１００）ＩｎＰ衬底上生长ＩｎＧａＡｓＰ体材料及ＩｎＧａＡｓＰ（１．３μｍ）／ＩｎＧａＡｓＰ（１．６μｍ）量子阱结构的生长条件和实验结果。比较了５５０℃和５８０℃两个生长温度下Ｉｎ１－ｘＧａｘＡｓｙＰ１－ｙ体材料及相应量子阱结构的特性，表明在５８０℃生长条件下，晶体具有更好的质量和特性。     

线性拟等重码的结构分析

Ｃ为二元正侧线性拟等重码，我们证明：（１）如果ｎ＝２ｄ则Ｃ等价于１阶；（２）如何为素数，则Ｃ等价于ＲＭ（ｋ－１）删除第１个分量后得到的线性码，另外，利用编码理论中著名的Ｍａｃ Ｗｉｌｌｉａｍ恒等式给出文（１）定量１的一个新的简洁证明。     

用MOCVD在非平面衬底上生长的量子阱,量子线及其光学性质

本文报道在６５０℃的衬底温度下实现了ＭＯＣＶＤ在（１００）面和（１１１）面上生长ＧａＡｓ与Ａｌ０．４Ｇａ０．６Ａｓ的不同选择性。这一衬底温度比国际上以前报道的要低，对制作适于光电器件的ＧａＡｓ／ＡｌＧａＡｓ量子阱层比较有利。用此技术，在ＧａＡｓ非平面衬底上生长了ＧａＡｓ／Ａｌ０．４Ｇａ０．６Ａｓ量子阱，并用扫描电镜、低温光致发光谱及偏振激发的光反射率谱技术进行了研究。结果不仅证明了ＭＣＣＶＤ外延生     

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.     

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.     

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.     

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