共查询到19条相似文献,搜索用时 140 毫秒
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气相色谱进展(上):快速气相色谱和检测器的发展 总被引:1,自引:1,他引:0
傅若农 《国外分析仪器技术与应用》1999,(3):1-11
综述评论了近几年有关快速气相色谱方法和气相色谱仪小型化和上色谱检测器的进展。快速气相色谱从60年代初就开始,陆续研究了三十多年,但是近年来又特别受到人们的格外的重视,在分离分析复杂混合物如药物、环境样品、石油工业样品、环境分析样品等方面有十分重要的作用。气相色谱检测是一直是人们研究的热点,本文综合评论了近几年有关气相色谱检测器的进展概况,对常用检测器发FID,ECD,F:D,PID和新型检测器如离 相似文献
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分离分析技术是现代科学技术的一个重要组成部分。新的仪器逐年翻新。高效液相色谱仍然是最大的应用方面;气相色谱继续发挥其作用;毛细管区带电泳因仪器产品的问世而获得了极其快速的发展;样品制备则成为分析的重要一环。 相似文献
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纳米技术及其在微型机械中的应用 总被引:1,自引:0,他引:1
纳米技术及微型机械被认为是21世纪的核心技术。文中介绍了纳米技术及微型机械的基本概念及纳米加工技术、纳米材料技术、纳米摩擦学等纳米技术在微型机械中的应用。 相似文献
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Li Yong Guo Min Li Fang Zhou Zhaoying Department of Precision Instruments Mechanology Tsinghua University Beijing China 《机械工程学报(英文版)》2002,15(2):177-181
Micro electro discharge machining (micro EDM) is a feasible way to manufacture micro structures and has potential application in advanced industrial fields. For the realization of micro EDM, it is necessary to pay careful attention to its equipment design and the development of process techniques. The present status of research and development of micro EDM equipment and process techniques is overviewed. A micro electro discharge machine incorporated with an inchworm type of micro feed mechanism is introduced, and a micro electro discharge machine for drilling micro holes suitable to industrial use is also introduced. Some of the machining experiments carried out on the micro EDM prototypes are shown and the feasibility of the micro EDM technology to practical use is discussed. 相似文献
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介绍一种新的原子发射光谱微型电感耦合等离子体(ICP)激发源,阐述这种激发源的结构、性能及其在光谱仪中的应用,它与平面结构的微型Fabry-Perot光谱仪联用可以作为微型气体分析仪使用。并简要介绍作者研制的在较低的13.56MHz下工作的微型ICP激发源。展望随着MEMS技术的发展,微型光谱仪的应用前景。 相似文献
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中国微纳制造研究进展 总被引:10,自引:2,他引:8
介绍了中国微纳制造领域的总体概况。从微构件力学性能、微纳摩擦磨损及粘附行为研究、典型微流体器件输运特性研究、拓扑优化技术在微纳结构设计中的应用研究、微传热学的研究和微测试方法和装置的研究具体介绍了微纳制造基础理论方面取得的进展。从设计方法、硅基微机电系统(Micro electro mechanical system,MEMS)制造工艺、非硅MEMS制造工艺等方面介绍了微系统设计与加工工艺研究进展。从物理量微传感器、微执行器件与系统、微纳生化传感与分析和微能源等方面介绍了微纳器件与微纳系统的研究进展,最后对中国微纳制造发展进行了总结和展望。 相似文献
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Walter Michaeli Dirk Opfermann Thomas Kamps 《The International Journal of Advanced Manufacturing Technology》2007,33(1-2):206-211
In micro systems technology, the process of micro assembly injection moulding is used for the generation of hybrid micro systems.
With this process, more functions are integrated in less space. In the field of medical technology, miniaturisation also means
new methods of treatment with fewer side effects on the patient. New cures are developed by the miniaturisation of medical
instruments, such as keyhole surgery. For detailed investigations a specific demonstration was developed to display the potential
of micro assembly injection moulding in medical science. This part consists of a carbon-fibre reinforced PEEK puncture needle,
which incorporates three lumens. The selected materials allow use of the needle during magnetic resonance imaging. In order
to attach additional equipment a plastic connector needs to be overmoulded on the needle. The investigations focus on the
injection moulding process by characterising the influences of temperature, moulding parameters and material combinations
on the resulting bond strength between needle and connector. 相似文献