Status and trends of silicon RF technology

The current research and development activities in silicon radio-frequency (RF) technologies are first reviewed, accompanied by an illustration of the most pronounced shortcomings of conventional silicon technology in the integrability of RF functions at high GHz frequencies. In the discussion on active RF devices mainly CMOS is investigated due to great interest in this mass-production technology. Issues related to the integration of spiral inductors on silicon are addressed, stressing in particular the difficulty of RF substrate potential definition. Silicon micromachining techniques are highlighted as potential solutions to the integration of RF passives and to reduce substrate losses and cross-talk on silicon. It is explained that micromachining techniques are the best introduced to the silicon mainstream by using post-processing and minimum process complexity.     

国外红外光电探测器发展动态

主要综述三代红外光电探测器的材料体系与研究现状,以及分析红外光电探测器的未来发展趋势。首先,简述红外光电探测器及其三个发展阶段。然后,论述适于三代红外光电探测器发展的碲镉汞（HgCdTe）、量子阱光探测（QWIPs,quantum-well photodetectors）、二类应变超晶格（SLS,type-Ⅱ strained-layer superlattices）和量子点红外光探测（QDIPs,quantum dot IR photodetectors）四个材料体系,以及介绍它们在三代红外光电探测器方面的研究进展。最后,分析未来红外光电探测器的材料选择及发展趋势。     

微型低温制冷技术的现状和发展趋势

介绍了目前典型的军用第二代、第三代焦平面探测器杜瓦制冷机组件中斯特林制冷机和节流制冷器的应用情况,从焦平面探测器芯片探测元尺寸的变化,提出了配接制冷机的冷指尺寸的变化,介绍了昆明物理研究所微型低温制冷技术的发展现状及微型低温制冷机向高可靠性、低成本、高工作温度的发展趋势。     

大尺寸碲镉汞材料研究现状与趋势

随着大面阵红外探测器技术研究越来越深入,大尺寸红外探测器材料技术成为制约红外探测器技术发展的重要环节。本文介绍了Sofradir公司、Teledyne公司、Raytheon公司、AIM公司红外探测器材料研究的现状,从生长方式、衬底选择等方向分析大尺寸碲镉汞材料研究现状与趋势。     

自组装与纳米技术

自组装技术是制备纳米结构的几种为数不多的方法之一。本文对最近几年自组装技术在纳米科技领域中的一些重大突破和成果进行较为系统地综述，主要包括以下几个方面：自组装单层膜、纳米尺度的表面改性、超分子材料、分子电子学与光子晶体。     

自组装与纳米技术

自组装技术是制备纳米结构的几种为数不多的方法之一。本文对最近几年自组装技术在纳米科技领域中的一些重大突破和成果进行较为系统地综述 ,主要包括以下几个方面 :自组装单层膜、纳米尺度的表面改性、超分子材料、分子电子学与光子晶体     

车载信息系统的现状与发展趋势分析

在国内，车载信息系统是近几年才出现的概念，它是运用计算机、卫星定位、通讯、控制等技术来提供安全、环保及舒适性功能和服务的汽车电子设备，它是智能汽车的组成部分，也叫汽车电子装置。车载信息系统包括汽车电脑、智能导航仪、行车记录仪、车载多媒体等等。     

Noise in nanotechnology

The length scales dominating physical phenomena in nanotechnology are at the boundary of the macroscopic and microscopic world. Nanoobject formation is governed by a competition between deterministic and random forces. Therefore, classical physical noise phenomena play an important role in determining structural formations and noise measurements can be used as important tools of nanotechnology.     

电信网络管理的现状及未来发展趋势

介绍我国电信网络管理现状,分析电信网络管理框架如何适应电信网与IP网融合的趋势,论述了为使电信网提供丰富多彩的业务,电信网络管理系统如何实现网络层管理与业务层管理的融合,最后对电信网络管理系统的标准化现状进行了总结.     

Status and trends of power semiconductor device models for circuitsimulation

The current status of research in the field of power semiconductor device models is reviewed. For this purpose, the basic modeling problems and research issues, which have to be overcome in this field, are discussed. Some new and quite promising modeling concepts have been proposed, which are compared with more traditional ways of achieving an efficient tradeoff between the necessary accuracy, required simulation speed, and feasibility of parameter determination. From this comparison, a prediction of the future evolution of circuit simulation models for power semiconductor devices naturally emerges. Many of the different concepts are expected to survive only in an application niche, where their specific points of strength are important. However, three modeling concepts have already been proven to be successfully applicable to the complete spectrum of power semiconductor devices and have their strength for different grades of complexity of the power circuit. A revolutionary development from anticipated or long-due breakthroughs is on the other hand not expected in the foreseeable future     

纳米技术在微电子连接上的应用

纳米技术（nanotechnology）是一门在0.1～100nm空间尺度内操纵原子和分子,对材料进行加工，制造具有特定功能的产品,或对某物质进行研究,掌握其原子和分子的运动规律和特性的崭新高技术。本文示举两例，介绍纳米技术在微电子连接方面的应用。     

Zeroing in on ethical issues in nanotechnology

Setting aside exaggerated notions of both the benefits and harms to be expected from nanotechnologies, we need to focus ethical investigation on specific initiatives at the nano scale that are already underway or planned. The aims are to anticipate ethical issues likely to arise in specific cases, to foster sensitivity to ethical issues and responsibility among nano specialists and policy makers, and to stimulate interchange between nano specialists and members of the public so that the public can become involved. After clarifying what the term "nanotechnology" embraces and looking at cautionary lessons from experience with the information technologies and biotechnology, the discussion turns to the importance of anticipating consequences, intended and unintended. Although specific nano options to consider are lacking, a brief survey indicates the issues to watch out for: preventable harms, conflicts about justice and fairness, respect for persons, and more specifically, safeguards for workers in new production processes, intellectual property concerns, preservation of university values in university/industry relationships, and conflicts of interest. Three main fronts of activity are needed to address ethical issues: 1) incorporating ethics research into nano research and development enterprises; 2) devising mechanisms to involve the public so that their perspectives and concerns feed back into research and development; and 3) initiating educational efforts at every level addressing both technical aspects and ethics and social implications aspects.     

纳米技术在克隆技术中的应用前景

纳米科技近年来的迅猛发展带动物理、化学、生物和医学等众多学科进入全新的领域,其前景是可以预见的。本文从生物医学的众多技术之一——克隆技术,展望了纳米技术的应用前景。     

A bird's-eye view of nanotechnology in 2003

A noncomprehensive, bird's-eye flight, given the approximately 6,000 publications in technology over the last two years, was taken over the currently exciting area of nanotechnology research, exploring the area from different perspectives to provide a sense of the state of the art, trends, open problems, and strategic research directions such as the list of enabling technologies needed to be developed to advance nanotechnology's bottom-up approach to material synthesis. One notices from the research surveyed that, apart from carbon nanotubes, fullerenes, fibres, and coatings, nanomaterials are still in their infancy or research stage, which opens up a lot of potential work yet to be done and things to be discovered.     

国外光通信发展及对我国建立光通信产业的几点建议

本文用表格、图形和大量数据概述了美、日、西欧各国光纤通信的发展现状和趋势,并对建立我国的光纤通信产业提出了建议.     

Texturing problems in nanotechnology: Texture control

An analysis of the data on nanomaterial texturing showed that textures arise even when there are no apparent causes of their formation. It was noted that the texturing problem is particularly urgent for medical and biological applications. The correlation of texturing with nanocrystal shaping was indicated. It was emphasized that the effect of the size factor on nanocrystal morphology is especially pronounced for crystals with linear sizes smaller than 10 nm. It was proposed to control textures of such crystals by the OTED method implemented in the electron microscope column.