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《大众科学.科学研究与实践》2013,(12)
正新民晚报无需WiFi点盏LED灯就能上网复旦大学计算机科学技术学院传出好消息,一种利用蜃内可见光传输网络信号的国际前沿通讯技术在实验室成功实现。研究人员将网络信号接入一盏1W的LED灯珠,灯光下的4台电脑即可上网,最高速率可达3.25G,平均上网速率达到150M,堪称世界最快的"灯光上网"。下个月,10台样机将亮相2013年上海工博会。据复旦大学计算机科学技术学院教授薛向阳介绍,全世界使用的灯泡却之不尽,尤其在国内LED光源正在大规模取代传统白炽灯。只要在任何不起眼的LED灯泡中增加一个微芯片,便可让灯泡变成无线网络发射器。(来源:新民晚报2013年10月15日) 相似文献
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实验室自行搭建完成一套微芯片体系,包括整体式聚二甲基硅氧烷(PDMS)微芯片及基于电荷耦合装置(CCD)的在线自校正激光诱导荧光检测装置.该体系具有微通道清洗及进样操作简单、分离快速等特点,已成功运用于氨基酸分离及标准蛋白质的筛分. 相似文献
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Micro total analysis systems for chemical and biological analysis have attracted much attention. However, microchips for sample preparation and especially DNA purification are still underdeveloped. This work describes a solid phase extraction chip for purifying DNA from biological samples based on the adsorption of DNA on bare silica beads prepacked in a microchannel. The chip was fabricated with polydimethylsiloxane. The silica beads were packed in the channel on the chip with a tapered microchannel to form the packed bed. Fluorescence detection was used to evaluate the DNA adsorbing efficiency of the solid phase. The polymerase chain reaction was used to evaluate the quality of the purified DNA for further use. The extraction efficiency for the DNA extraction chip is approximately 50% with a 150-nL extraction volume, Successful amplification of DNA extracted from human whole blood indicates that this method is compatible with the polymerase chain reaction. 相似文献
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二战中,由盟军研制的微芯片的早期版本主要用于识别敌方战机,后来前苏联间谍用微芯片制造隐式监听设备。如今,60多年过去了,你甚至可能觉察不到这些无线电传输微芯片的存在,但其用武之地几乎遍及所有事物。 相似文献