砷化镓在O_2~＋与Cs~＋离子轰击下二次离子发射的研究

本文研究了各种实验参数对Ｏ－ＳＩＭＳ和Ｃｓ－ＳＩＭＳ中ＧａＡｓ二次离子发射的影响，和样品室中氧分压对ＧａＡｓ二次离子发射的增强效应．实验表明，与Ａｒ－ＳＩＭＳ不同，Ｏ－ＳＩＭＳ和Ｃｓ－ＳＩＭＳ中随Ｅｐ增加二次离子的强度反而有所下降，而样品室注入氧可以提高正二次离子产额，但需要达到较高的氧分压：１０－３Ｐａ．二次离子能量分布测量表明，对Ｏ－ＳＩＭＳ，二次离子强度在Ｖｂｉａｓ＝３０Ｖ左右达到最大值，对Ｃｓ－ＳＩＭＳ，二次离子强度在Ｖｂｉａｓ＝－２０Ｖ左右达到最大值．     

利用快速热退火在n—GaAs上形成Ge／PdGe欧姆接触

利用Ｇｅ／Ｐｄ／ＧａＡｓ结构和快速热退火工艺在ｎ－ＧａＡｓ上形成低阻的欧姆接触，研究了比接触电阻率与退火的温度和时间关系，４００－５００℃之间退火的欧姆接触的比接触电阻率为－１０＾－６Ω．ｃｍ＾２，接触层的表面光滑、界面平整，利用俄歇电子谱（ＡＥＳ）和二次离子质谱（ＳＩＭＳ）揭示和讨论了比接触电阻率的欧姆接触形成的机理。     

利用快速热退火在n－GaAs上形成Ge／PdGe欧姆接触

利用Ｇｅ／Ｐｄ／ＧａＡｓ结构和快速热退火工艺在ｎ－ＧａＡｓ上形成低阻的欧姆接触．研究了比接触电阻率与退火的温度和时间关系，４００～５００℃之间退火的欧姆接触的比接触电阻率为～１０－６Ω·ｃｍ２．接触层的表面光滑、界面平整．利用俄歇电子谱（ＡＥＳ）和二次离子质谱（ＳＩＭＳ）一揭示和讨论了比接触电阻率的欧姆接触形成的机理．     

Si~＋、As~＋双离子注入半绝缘GaAs的研究

本文采用Ｓｉ＋和Ｓｉ＋、Ａｓ＋单、双离子多重注入半绝缘砷化镓［ＨＢ－ＳＩＧａＡｓ（Ｃｒ）］．研究发现，双离子注入层经无包封快速热退火后，激活率和电子迁移率较单Ｓｉ＋注入样品明显提高．Ｒａｍａｎ谱显示结构完整性好，并且有好的载流子剖面分布．文中从化学计量比角度出发分析了激活率提高的原因和从注入离子增强扩散系数分布来解释了多重Ｓｉ＋、Ａｓ＋双注入的载流子浓度剖面分布．     

离子注入半绝缘GaAs电激活效率与电激活均匀性的研究

研究了Ｓｉ＾＋和Ｓｉ＾＋／Ａｓ＾＋注入到Ｈｏｒｉｚｏｎｔａｌ Ｂｒｉｄｇｍａｎ（ＨＢ）和Ｌｉｑｕｉｄ Ｅｎｃａｐｓｕｌａｔｅｄ Ｃｚｏｃｈｒａｌｓｋｉ（ＬＥＣ）方法制备的半绝缘ＧａＡｓ衬底电激活效率与均匀性。结果发现：在相同条件下（注入与退火）,不同生长方法的半绝缘ＧａＡｓ衬底电激活不同,通常电激活ＨＢ〉ＬＥＣ,ＨＢ ＳＩ－－ＧａＡｓ（Ｃｒ）（１００）Ａ面〉（１００）Ｂ面,Ｓｉ＾＋／Ａｓ＾＋双离子     

GaAs（100）表面钝化和Mg／S／GaAs界面的SRPES研究

应用同步辐射光电子谱（ＳＲＰＥＳ）表征了一种新的ＣＨ３ＣＳＮＨ２／ＮＨ４ＯＨ溶液体系处理的ＧａＡｓ（１００）表面的成键特性和电子态．结果表明，经过处理的ＧａＡｓ（１００）表面，Ｓ既与Ａｓ成键也与Ｇａ成键，形成了Ｓ与ＧａＡｓ的新界面，这说明ＣＨ３ＣＳＮＨ２／ＮＨ４ＯＨ溶液处理的ＧａＡｓ（１００）表面具有明显的钝化作用．钝化表面退火处理后，发现ＡＳ的硫化物不稳定，分解或反应生成Ｇａ－Ｓ成分和元素态Ａｓ；室温下，Ｍｇ淀积硫钝化的ＧａＡｓ表面的实验结果表明，Ｍｇ置换ＧａＳ的Ｇａ成为金属Ｇａ偏析到表面，而硫以ＭｇＳ     

GaAs表面及AlxGa1—xAs／GaAsHBT外基区表面（NH4）2S／SiNx钝化工艺研究

分析了ＡｌｘＧａ１－ｘＡｓ／ＧａＡｓＨＢＴ外基区表面复合电流及外基区复面复合速度对直接增益的影响，用光致发光（ＰＬ）谱和Ａｌ／ＳｉＮｘ－Ｓ／ＧａＡｓＭＩＳ结构ＣＶ特性，研究了ＧａＡｓ表面（ＮＨ４）２Ｓ／ＳｉＮｘ钝化工艺的效果及其稳定性。结果表明，ＥＣＲ－ＣＶＤ淀积ＳｉＮｘ覆盖并在Ｎ２气氛中退火有助于改善ＧａＡｓ表面硫钝化效果的稳定性，在此基础上形成了一套包括（ＮＨ４）２Ｓ处理，ＳｉＮｘＥＣＲ－ＣＶ     

GaAs表面及Al_xGa_（1－x）As／GaAsHBT外基区表面（NH_4）_2S／SiN_x钝化工艺研究

分析了ＡｌｘＧａ１－ｘＡｓ／ＧａＡｓＨＢＴ外基区表面复合电流及外基区表面复合速度对直流增益的影响，用光致发光（ＰＬ）谱和Ａｌ／ＳｉＮｘ－Ｓ／ＧａＡｓＭＩＳ结构Ｃ－Ｖ特性，研究了ＧａＡｓ表面（ＮＨ４）２Ｓ／ＳｉＮｘ钝化工艺的效果及其稳定性。结果表明，ＥＣＲ－ＣＶＤ淀积ＳｉＮｘ覆盖并在Ｎ２气氛中退火有助于改善ＧａＡｓ表面硫钝化效果的稳定性。在此基础上形成了一套包括（ＮＨ４）２Ｓ处理、ＳｉＮｘＥＣＲ－ＣＶＤ淀积及退火并与现有ＨＢＴ工艺兼容的外基区表面钝化工艺，使发射区面积为４×１０μｍ２的器件增益比钝化前提高了４倍，且６０天内不退化。     

GaSb晶体的高能N~＋注入及其光学性质

本文用低温光致发光光谱（ＰＬ）、椭圆偏振光谱（ＳＥ）、背散射及沟道技术（ＲＢＳ／Ｃ）、扫描电镜技术（ＳＥＭ）等研究了２ＭｅＶ高能Ｎ＋注入Ｇａｓｂ晶体损伤及其光学性质．结果表明高能Ｎ＋注入Ｇａｓｂ晶体不会产生反常膨胀（Ｓｗｅｌｌｉｎｇ），通过合理的退火可使注入样品晶格得到很好恢复．椭圆偏振光谱能准确反映注入样品晶格损伤情况，并与背散射结果吻合．用有效介质模型（ＥＭＡ）对椭偏谱进行似合可对注入损伤有定量的了解．     

（Nd,Er）：YAG晶体中Nd^3＋和Er^3＋离子间相互作用

用激光加热基座法生长了Ｅｒ：ＹＡＧ、（Ｎｄ、Ｅｒ）：ＹＡＧ和Ｎｄ：ＹＡＧ单晶光纤，测试了单晶光纤的透过率谱和Ｅｒ＾３＋离子＾４Ｉ１１／２、＾４Ｉ１３／２态，Ｎｄ＾２＋离子＾４Ｆ３／２态的固有寿命τ０，双掺晶体中这些态的平均寿命τ０。讨论了Ｎｄ＾３＋离子对Ｅｒ＾３＋离子的敏化作用。     

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.     

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.     

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.     

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.     

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     

Call for Papers—Feature Topic,Vol.12,No.7,2015

正Information Centric Networking Information-Centric Networking(ICN) is an emerging direction in Future Internet architecture research,gaining significant tractions among academia and industry.Aiming to replace the conventional host-to-host communication model by a data-centric model,ICN treats data content as the first     

JOURNAL OF ELECTRONICS(CHINA)

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NOTICE OF CHANGING JOURNAL OF ELECTRONICS （CHINA） TO MICROSYSTEMS ＆ NANOENGINEERING

正Journal of Electronics(China)(JE)was founded in 1984,sponsored by the Institute of Electronics,Chinese Academy of Sciences.JE is one of the first English academic journals in China in the field of Electronics and Information technology.The journal was published quarterly since it was launched in 1984 to 2003,then it is published bimonthly till now.During