Electroosmotic micropump for lab‐on‐a‐chip biomedical applications

Lab‐on‐a‐chip (LOC) integrated microfluidics has been a powerful tool for new developments in analytical chemistry. These microfluidic systems enable the miniaturization, integration and automation of complex biochemical assays through the reduction of reagent use and enabling portability. Electroosmotic micropumps could be employed as powerful tools to generate required flow in point of care (POC) devices. In the present study, parallel electroosmotic micropumps are investigated to improve the efficiency of simple micropumps. According to the results, parallel micropumps generate higher flow rate in comparison with conventional electroosmotic pump. In the last decade, a large variety of non‐Newtonian fluids have been utilized in biomedical application but requirements for a POC device such as high efficient driving flow, miniaturization and simple handling of POC devices remain unmet. As a consequence, in this study, power law model as non‐Newtonian fluids that flow through the parallel micropumps are investigated in order to enhance fluid pumping and decreasing voltage requirement.. It is found that as the power law index increases the mass flow rate decreases. Also, the flow rate is almost constant for the higher power law index. Obtained results, demonstrated that parallel micropump could enhance pumping of non‐Newtonian fluid (blood) up to 30%. Copyright © 2016 John Wiley & Sons, Ltd.     

面向多雷达数据融合的并行数据编排框架研究

在多雷达数据融合中,数据编排方式是多雷达组网系统成败的关键因素之一。随着数据融合系统中处理容量的迅速增长,串行数据编排融合框架已经不能满足多雷达组网需求。文中针对大容量数据融合系统提出了一种并行数据编排框架,使用OpenMP 并行技术进行了实现。仿真结果表明,并行数据编排框架相比较于串行处理方式具有较高的加速比,实时性高,满足了大规模多雷达组网的需求,并且具有良好的扩展性。     

基于并行FDTD方法分析表面等离子波导的特性

设计了一种双L形表面等离子体矩形环谐振器波导,采用并行时域有限差分方法,对这种波导的传输特性随几何结构参数的依赖关系进行了分析.计算结果表明通过改变输入/输出光波导的结构参数,可以调节该波导的消光比和频率选择特性.该波导结构能够有效地抑制后向辐射干扰并且大幅度地提高其场消光比,这使得此类谐振器结构更具有功能性.     

基于TS201的软件优化设计

数据实时处理能力是雷达信号处理等实时系统的重要指标,提高软件运行效率是系统软件设计中必须要考虑的问题。大批量数据读取和存储操作存在于信号处理各工作阶段,对其进行充分优化是信号处理软件设计的重要组成部分。在此以ADSP TS201平台数据转存为例,描述了软件优化的设计思路和处理方法,运行结果表明,充分应用DSP并行处理特性和宽数据操作,采用汇编语言编程,可以使软件运行效率得到显著提高。     

一种带改进开关和使用新型按比例缩小策略的10位120兆的流水线模数转换器

这篇文章介绍了一种精度为10比特,采样率为120兆的双通道流水线模数转换器(ADC)。这个模数转换器利用了体效应来改善开关的导通性能。在版图绘制中应用了一种新型的按比例缩小的策略。基于0.18μm的CMOS工艺,ADC的整个版图面积为2.05x1.83 mm2。在采样频率为120兆,输入信号频率为4.9兆的情况下,无杂散动态范围达到了74.32dB,信号噪音失真比为55.34dB,3伏供电电压下每通道的功耗为220毫瓦。     

High-speed low-power voltage-programmed driving scheme for AMOLED displays

A new voltage-programmed driving scheme named the mixed parallel addressing scheme is presented for AMOLED displays, in which one compensation interval can be divided into the first compensation frame and the consequent N-1 post-compensation frames without periods of initialization and threshold voltage detection. The proposed driving scheme has the advantages of both high speed and low driving power due to the mixture of the pipeline technology and the threshold voltage one-time detection technology. Corresponding to the proposed driving scheme, we also propose a new voltage-programmed compensation pixel circuit, which consists of five TFTs and two capacitors(5T2C). In-Zn-O thin-film transistors(IZO TFTs) are used to build the proposed 5T2C pixel circuit. It is shown that the non-uniformity of the proposed pixel circuit is considerably reduced compared with that of the conventional 2T1C pixel circuit. The number of frames(N) preserved in the proposed driving scheme are measured and can be up to 35 with the variation of the OLED current remaining in an acceptable range. Moreover, the proposed voltage-programmed driving scheme can be more valuable for an AMOLED display with high resolution, and may also be applied to other compensation pixel circuits.     

平行缝焊工艺的热效应研究

平行缝焊作为一种高可靠性的气密性密封方法,在陶瓷封装行业中有着愈发重要的应用。封焊过程中瞬间产生的高能量在完成密封的同时,会对陶瓷外壳造成很高的热应力残留,可能会对器件可靠性产生影响。介绍了平行缝焊的工作原理及工艺参数,并通过使用ANSYS软件对工艺过程中的各参数进行热仿真分析,研究平行缝焊工艺参数对陶瓷封装的热影响。     

基于云平台的MPI研究与应用

为满足信息化处理需求的增长,提出MPI在云计算领域的应用研究。文章在介绍了云计算的优势、MPI概念的基础上,将MPI并行程序与并行机群系统及云计算平台整合在一起,借助Hadoop框架,充分利用MapReduce模式来实现并行化云计算对应的MPI算法。研究结果分析表明,该算法是可行的,可有效提高MPI并行处理的性能。     

基于Bézier曲线的两平行线间缓和曲线构造

利用五次 Bézier 曲线,构造了一条含形状参数的两平行线间满足 G2连续的缓和曲线。这条曲线在 t=1/2含有唯一的曲率极值点。利用形状参数可以方便地控制曲率极值的大小和调节曲线的形状。     

2-RRU&RSR并联机构运动学传动性能分析

以2-RRURSR并联机构为研究对象,通过矢量方程法对机构进行位置逆解研究,得到相应的运动学方程。利用螺旋理论建立机构的雅可比矩阵,并通过对机构支链输出传动效率指数的定义对机构的运动学传动性能进行研究。