动态氢气泡/牺牲铜模板法制备蜂窝AuPtCu电催化剂用于甲酸氧化

微/纳多孔金属材料具有高比表面积等优点，在电化学等领域广受关注.本工作通过动态氢气泡模板法，在镀金玻璃碳电极（Au_pla/GCE）上电沉积三维蜂窝状多孔纳米AuPtCu （3DHPN-AuPtCu）复合材料，再阳极溶出Cu，制备了3DHPN-AuPt_Cu/Au_pla/GCE.采用循环伏安法（CV）、金相显微镜、扫描电子显微镜、能量色散谱和电感耦合等离子体-原子发射光谱等手段表征了相关修饰电极.所制3DHPN-AuPt_Cu/Au_pla/GCE在含0.2 mol/L HCOOH的0.5 mol/L H₂SO₄水溶液中，电催化氧化甲酸的峰电流密度为12.5 mA·cm_Pt^-2（CV，-0.3～1.0 V，50 mV/s），优于有关对照电极和很多已报道的Pt复合物修饰电极，表明通过这种动态氢气泡/牺牲铜双模板法可制备出电催化性能优异的金属蜂窝结构.     

A Demonstration of Automatically Switched Optical Network

We build an automatically switched optical network (ASON) testbed with four optical cross-connect nodes. Many fundamental ASON features are demonstrated, which is implemented by control protocols based on generalized multi-protocol label switching (GMPLS) framework.     

Reconfiguring the Logical Topology With Performance Guarantees in WDM Networks

To improve the network performance after traffic demand changes , reconfiguring the logical topology is necessary. We present an ILP algorithm to find out the least lightpath changes needed with guaranteed network performance.     

Optimization of erbium-doped waveguide amplifier

Based on the combined model of erbium-doped waveguide amplifier with high erbium ion concentration, the rate equation and evolution equation is solved numerically. The waveguide parameters such as doping concentration, waveguide length are optimized in this paper. With pumping power of 150 mW, the optimal erbium doping concentration and waveguide length is 6×10²⁶ m⁻³, 15 cm or so, respectively. The amplifier with these optimal parameters may reach gain more than 35 dB.     

一种光电混合SIMD型计算机(OEHSC)系统结构及其算法的设计

本文基于光计算机结构和算法必须以“门”一级并行为基础的观点，提出了可实现性能较好的光电混合ＳＩＭＤ型计算机的结构和以位平面数据表示为基础的并行算法。通过性能分析，证明了光计算机计算能力的潜力及光电混合系统的有效性     

多波长复用光传送网的生存结构

本文讨论了光传送网的传送和监控机制,按照传送网通用功能结构的定义,分析了光传送网几种保护交换方式内在的机制,讨论了各自应该属于路径保护还是子网连接保护.在此基础上给出了光信道保护环和光复用段保护环详细的功能结构,同时简要地介绍了这两种保护环信息建模中需要用到的对象类.     

Electrochemical determination of heparin using methylene blue probe and study on competition of Ba with methylene blue for binding heparin

Cyclic voltammetric investigation of the interaction of methylene blue (MB) with heparin (hep) at a gold electrode is presented. The combination of MB with heparin formed a nonelectroactive complex MB-hep, which resulted in the peak current decrease of MB. The anodic peak current difference of MB was found to be proportional to the concentration of heparin in the range of 0.666-64.5 μg mL⁻¹ with a detection limit of 270 ng mL⁻¹ and a satisfactory result was obtained for the determination of heparin in injection samples. The equilibrium constant for MB-hep complex was calculated to be 7.32 × 10⁵. The dynamic process of competition of Ba²⁺ with methylene blue for binding heparin was monitored using quartz crystal microbalance (QCM) technique. The reaction rate constant between Ba²⁺ and MB-hep was estimated to be 0.0022 s⁻¹.     

波分复用全光通信网中的放大自发辐射噪声积累效应研究

给出了一种全光通信网波长域计算机模拟方法，模拟了波分复用信号经过３个光分插复用节点后的信号及放大自发辐射积累的光谱图，并与实验结果进行了对比。计算了波分复用信号经过５０个光分插复用节点极限情况下的信噪比，结果表明放大自发辐射噪声积累造成的信噪比下降仍然可以保证接收机在１０Ｇｂ／ｓ时的误码率小于１０＾－９。这些结果可以被应用到未来国家或地区级全光通信网中。     

熔锥平面型三光纤耦合特性分析

以线性耦合波方程为基础，分析了具有不同耦合强度的平面型三光纤耦合系统的模场特性和功率耦合特性，并与常规的平面型三光纤耦合系统的耦合特性作了比较，给出的耦合器谱响应实验结果与理论结果较为一致。