Organic materials for organic electronic devices

In recent years, organic electronic devices which use organic materials as an active layer have gained considerable interest as light-emitting devices, energy converting devices and switching devices in many applications. In these organic electronic devices, the organic materials play a key role of managing the device performances and various organic materials have been developed to improve the device performances of organic electronic devices. In this paper, recent developments of organic electronic materials for organic light-emitting diodes and organic solar cells were reviewed.     

硒化锌晶体光学加工中的宏观应力

采用化学-机械加工工艺加工ZnSe晶体器件.用X射线衍射分析技术测定晶体器件在加工过程中宏观应力的变化.结果表明:加工后器件的损伤层厚度接近为零.抛光后的器件和加工前的器件的宏观应力相近,表明用该工艺加工对器件的宏观应力影响小,这对器件的应用非常有利.加工实验表明:选用的工艺参数和抛光液对加工ZnSe晶体器件是成功的.     

光电显示玻璃基板运输及缓存装置研究

目前光电显示玻璃基板运输及缓存装置是由人工放置单片玻璃基板,再通过滚轮实现存放和运输,已不能满足人工抽检放置、翻转、自由升降和多片放置等多功能需要。因此,对装置进行了改进,拓宽了运输及缓存装置的使用功能。     

5万t/a离子膜烧碱整流设备选型方案

介绍了5万t/a离子膜烧碱整流系统中整流变压器、整流装置、直流刀闸、直流测量装置、纯水冷却装置、监控系统等的性能特点,阐述了神马氯碱公司整流所的设备选型方案。     

Polyaniline electrochromic devices with transparent graphene electrodes

Transparent, conductive and uniform graphene films have been prepared and used as electrodes of the electrochromic devices of polyaniline. Polyaniline films on both graphene and the widely used indium tin oxide (ITO) electrodes showed similar electrochemical and spectroelectrochemical properties. However, graphene electrodes exhibited much higher electrochemical stability than ITO in aqueous acidic electrolytes. The performances of the electrochromic devices with graphene electrodes exhibited slight decrease upon voltage switching while those of the devices with ITO electrodes decreased dramatically. After 300 cycles, the electrochromic devices with graphene electrodes showed much larger optical contrast and shorter switching time than those of the devices with ITO electrodes.     

整流装置跳闸原因及整改

从离子膜法烧碱整流装置的保护原理出发,通过对某工厂在2005年整流装置跳闸原因的统计和技术分析,发现电网波动和雷击是整流装置跳闸的两个重要原因,并提出了采取修改整定值、增加防晃电交流接触器以及在低压交流侧增加三级防雷措施的整改对策。整改后,整流装置跳闸次数明显减少。     

Diamond power transistor performance

The electrical characteristics of various diamond power device structures have been analysed using a two-dimensional numerical simulator code for semiconductor devices. The convergence of the simulator for diamond-based devices has been demonstrated and the simulation results indicate a superior power-handling capability of the diamond devices compared with equivalent silicon devices. In vertical recessed gate diamond power junction field effect transistors a very high current density and a high transconductance can be achieved. In the case of silicon and diamond devices having equivalent breakdown voltages the size of the diamond device can be reduced significantly. However, in small vertical structures the appearance of the space-charge-limited current strongly reduces the gate control of the current. In lateral diamond power metal-semiconductor field effect transistors the gate control is good even in small 1000 V devices, which also have a very low on state resistance 7 mΩ cm².     

分子器件制作方法研究进展

随着现有超大规模集成电路日趋其发展极限,以分子器件作为电子元器件替代品,在世界各国得到高度重视,其发展也日新月异。本文综述了分子器件分类及其制作方法,以此来抛砖引玉,促进我国分子器件的发展。     

离子膜电解装置的生产管理与优化控制

简要介绍离子膜电解装置的特点,从精制盐水、电解槽温度、电压、加酸控制、直流电耗、总管压差等方面论述了电解装置的生产管理、优化控制,提出了要对离子膜电解装置进行定期工艺普查、分析普查和设备普查,以保证电解装置安全稳定运行。     

蒸发系统的改造

对原三效顺流蒸发装置的真空系统、离心机、大气冷凝器等一些关键部位和相关的设备管道进行了技术改造,极大地降低了生产能耗,增加了企业的经济效益.     

微结构设备内液-液均相混合性能研究进展

以微结构设备内混合性能的研究以及混合性能表征方法为重点,以液-液均相混合体系为对象,系统介绍和分析了提高微结构设备内混合性能的方法和机理,对粒子或染料示踪法、化学反应探针法和计算流体力学(CFD)模拟法3种混合性能的表征方法进行了分析和比较,并在此基础上对微结构设备混合性能及其表征方法的发展前景进行了分析。     

A review of organic electrochromic fabric devices

Electrochromic fabric devices represent a further extension to the plethora of available literature on conductive fabrics. This article contains a brief overview of electrochromic devices, electrochromic polymers, conductive materials, conductive fabrics, and electrochromic fabric devices. A tabulated list of the perceived colour of a number of electrochromic polymers that is contained herein is designed to serve as an aide to colour mixing studies. The challenges of optimisation and commercialisatiion of electrochromic fabric devices and their mitigating factors are conjectured, along with some future potential applications for electrochromic fabric device technologies.     

MEMS-Based Controlled Drug Delivery Systems: A Short Review

The use of microelectromechanical systems-based drug delivery vehicles is on the rise. These advancements in the technologies have enabled the researchers in developing miniaturized devices including drug delivery platforms. This has opened up a new arena in pharmaceutical research. The main advantage of these devices is their ability to control the release profile of the drugs in a temporal scale. The main components of the microelectromechanical systems-based drug delivery devices are the microsensors, microvalves, micropumps, microchannel and a miniaturized control system. The current review discusses the different pumping mechanisms and clinical applications of the microelectromechanical systems-based delivery devices.     

浅谈出口冷端设备包装设计

用于浮法玻璃冷端设备的包装必须能够保护设备,在储藏、运输及中转过程中不受损坏。以越南900t／d生产线为例,介绍了出口冷端设备的包装设计。     

Atom devices based on single dopants in silicon nanostructures

Silicon field-effect transistors have now reached gate lengths of only a few tens of nanometers, containing a countable number of dopants in the channel. Such technological trend brought us to a research stage on devices working with one or a few dopant atoms. In this work, we review our most recent studies on key atom devices with fundamental structures of silicon-on-insulator MOSFETs, such as single-dopant transistors, preliminary memory devices, single-electron turnstile devices and photonic devices, in which electron tunneling mediated by single dopant atoms is the essential transport mechanism. Furthermore, observation of individual dopant potential in the channel by Kelvin probe force microscopy is also presented. These results may pave the way for the development of a new device technology, i.e., single-dopant atom electronics.     

装备国产化:78.40%

装备制造是国民经济发展的基础产业,要想成为一个经济强国,必须成为一个装备制造强国。石化工业的重大关键设备实现国产化可以提高国内石化装备制造能力和水平,避免受制于人;同时可以节省大量投资,促进石化工业发展,因此具有非常     

Towards self‐sterilizing medical devices: controlling infection

Medical devices are an important component of modern medicine. In many cases, medical devices are used to improve the ‘quality of life’ for the patient, and their use is increasing dramatically. At the same time, the emergence of multi‐drug‐resistant bacteria, or ‘super‐bugs’, is a global crisis. At least in part, biomedical devices proliferate the growth of resistant bacteria. This has spurred new research aimed at the development of medical devices that prevent or control bacterial colonization, and this perspective discusses the current efforts in this area. Copyright © 2008 Society of Chemical Industry     

Electroluminescence of molecularly-doped polymer films using coumarin derivative as an emissive center

Electroluminescent devices were fabricated using molecularly-doped polymer films. The devices consisted of aromatic diamine, TPD for hole transport molecules and an oxadiazole derivative, BND for electron transport molecules exhibited weak blue emission which was assumed to originate from exciplex of TPD and BND. Three component EL devices made of TPD, BND and a small amount of a coumarin dye as an emissive center were prepared, and intense green emission due to the coumarin dye was observed. Relative EL efficiencies in the three component EL devices were found to be highly dependent on TPD/BND molar ratios.     

Very large scale droplet microfluidic integration (VLDMI) using genetic algorithm

Droplet microfluidics is likely to play a central role in the development of lab-on-a-chip technologies and as a result, significant research is directed toward this field. Understanding the spatiotemporal dynamics of discrete droplets inside microfluidic devices and the design of microfluidic devices for specific tasks are some of the dominant research topics. These works have since resulted in the development of microfluidic devices with functionalities, such as sorting, merging, synchronization, storing etc. However, the anticipated application of microfluidic devices to more complex problems will require more integrated devices that can incorporate the above functionalities on a single chip. In the current work, we present a genetic algorithm optimization-based design tool for discovering very large-scale integration of discrete microfluidic networks for a given objective function. The application of the algorithm is demonstrated through a combinatorial sequencing problem, where the objective is to achieve three different droplet combinatorial sequences for three different droplet types. Multiple fascinating, but nonobvious designs were discovered for this application. It is difficult to imagine such devices being designed using trial and error experimental procedure, which has been the main route for obtaining microfluidic device designs. With advances in technologies for fabrication of microfluidic devices, the current tool can be a significant step toward drastically cutting down on the laborious trial-and-error design process and help in developing droplet microfluidics-based lab-on-a-chip platforms cheaper and faster.     

Enhancement in the limit of detection of lab-on-chip microfluidic devices using functional nanomaterials

Technological developments in recent years have witnessed a paradigm shift towards lab-on-chip devices for various diagnostic applications. Lab-on-chip technology integrates several functions typically performed in a large-scale analytical laboratory on a small-scale platform. These devices are more than the miniaturized versions of conventional analytical and diagnostic techniques. The advances in fabrication techniques, material sciences, surface modification strategies, and their integration with microfluidics and chemical and biological-based detection mechanisms have enormously enhanced the capabilities of these devices. The minuscule sample and reagent requirements, capillary-driven pump-free flows, faster transport phenomena, and ease of integration with various signal readout mechanisms make these platforms apt for use in resource-limited settings, especially in developing and underdeveloped parts of the world. The microfluidic lab-on-a-chip technology offers a promising approach to developing cost-effective and sustainable point-of-care testing applications. Numerous merits of this technology have attracted the attention of researchers to develop low-cost and rapid diagnostic platforms in human healthcare, veterinary medicine, food quality testing, and environmental monitoring. However, one of the major challenges associated with these devices is their limited sensitivity or the limit of detection. The use of functional nanomaterials in lab-on-chip microfluidic devices can improve the limit of detection by enhancing the signal-to-noise ratio, increasing the capture efficiency, and providing capabilities for devising novel detection schemes. This review presents an overview of state-of-the-art techniques for integrating functional nanomaterials with microfluidic devices and discusses the potential applications of these devices in various fields.