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近来《自然》杂志的一篇特载文章中说 ,美国威斯康辛 -麦迪逊大学的科研人员正在开发一种应用光辐射二极管 (L EDs)来检测空气或水中的化学物质的高灵敏系统。研究人员已经演示了在存在化学物质的情况下 L EDs发出的光的强弱变化情况以及这一变化是如何转换到检测装置上的。按
In a special article in the recent Nature issue, researchers at the University of Wisconsin-Madison in the United States are developing a highly sensitive system that uses light-emitting diodes (L EDs) to detect chemicals in the air or water. Researchers have demonstrated how light changes in the L EDs in the presence of chemicals and how this shift is made to the detection device. press