Absolute characterization of high numerical aperture microscope objectives utilizing a dipole scatterer

Measuring the aberrations of optical systems is an essential step in the fabrication of high precision optical components. Such a characterization is usually ba...     

Microstructural evolution of a silicon carbide-carbon coated nanostructured ferritic alloy composite during in-situ Kr ion irradiation at 300℃ 450℃

This work focuses on irradiation behaviors of a novel silicon carbide and carbon coated nanostructured ferritic alloy (SiC-C@NFA) composite for potential applications as a cladding and structural material for next generation nuclear reactors.The SiC-C@NFA samples were irradiated with 1 MeV Kr ions up to 10 dpa at 300 and 450 ℃.Microstructures and defect evolution were studied in-situ at the IVEM-Tandem facility at Argonne National Laboratory.The effects of ion irradiation on various phases such as α-ferrite matrix,(Fe,Cr)7C3,and (Ti,W)C precipitates were evaluated.The α-ferrite matrix showed a continuous increase in dislocation density along with spatial ordering of dislocation loops (or loop strings) at ＞5 dpa.The size of the dislocation loops at 450 ℃ was larger than that at 300 ℃.The nucleation and growth of new (Ti,W)C precipitates in α-ferrite grains were enhanced with the ion dose at 450 ℃.This study provides new insight into the irradiation resistance of the SiC-C@NFA system.     

新皇冠的新演绎--皇冠(AVANCE)100系列视听系统

著名音响品牌皇冠(AVANCE)是一家专注于声音设计的影音机构,长期以来,一直以音箱的设计为重点,推出了不少颇具知名度的产品。近期,我们高兴地看到,一套新型的完整的影音视听系统由皇冠推出了,这就是皇冠(AVANCE)100系列51视听系统。可以看到,优秀的家庭视听系统正赢得越来越多的市场,皇冠(AVANCE)100系列视听系统的开发正是基于皇冠的声音理念得到了市场的认同,将产品系列从扬声器延伸到功放和讯源,令皇冠的声音理念在产品上得到更加充分的表现。     

影色迷人的小天地--夏新LC-17HWT1液晶电视

液晶电视具有图像逼真、画质细腻、层次丰富、立体感强,以及高亮度、宽视角、高清晰等优点;而且轻薄、省电、无闪烁、无辐射,可有效减轻人们的视觉疲劳;液晶电视的接口也极为丰富,可接驳电脑、DVD等音视频设备,现在一些厂家还将读取Flash卡的功能整合进了液晶电视,这让液晶电视具备了更多的数码味道。在一些发达国家,液晶电视已向许多家庭的厨房、起居室和浴室渗透,这让液晶电视的超薄、壁挂、平面、节能环保的优点充分显示出来。而夏新LC-17HWT1液晶电视则是这一方面的佼佼者。     

Plasmon-induced trap filling at grain boundaries in perovskite solar cells

The deep-level traps induced by charged defects at the grain boundaries (GBs) of polycrystalline organic–inorganic halide perovskite (OIHP) films serve as major...     

Current Distribution in Helical Solenoids

A method is presented for calculating the current distribution and power loss in the individual turns of helical solenoids of nonmagnetic materials. Examples are presented pertaining to 5- and 14-turn coils with or without a circular billet located inside the solenoid. In addition, experimental results are included showing the excellent agreement between theory and practice.     

Nachweis von Margarine und geh?rteten ?len in Lebensmitteln

Ohne Zusammenfassung     

压力传感器技术

压力传感器随处可见,但是你知道它的内部结构么?选择正确的技术很关键,在极端环境下这点尤其重要。回到机械和压力表的时代,大多数的设计都是基于一个原型,然而,当进入了电子传感器时代,一种全新的测量技术产生了。你是否应该关注这种传感器的设     

独立电源:电池

随着远程和无线设备的广泛发展,电源应用的种类日益增多。目前经出现了许多电源的替换能源独立但电池仍然是其中既便宜又可靠的一种。