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According to the X-MOL News of October 23, 2016, the earliest discussion of Janus particles may be traced back to the Nobel Prize speech by P.G. de Gennes (of course, the earliest article on Janus particles was earlier). Janus is the name of two-faced gods in ancient Roman mythology. It is said that Janus has two faces, one facing the past and the other facing the future. In the field of chemistry, it is used to describe materials with asymmetric structures, especially those with opposite structures or properties. Janus particles have also become one of the earliest Janus materials.When the co...
Release time: 2016 - 10 - 27
According to the Chinese Academy of Sciences, October 19, 2016, recently, the research team of the University of Science and Technology of China has made important progress in water transport of graphene nanochannels in cooperation with Andre Geim, a Nobel Prize winner of physics and professor of the University of Manchester in the United Kingdom. Wang Fengchao, a special associate researcher at China University of Science and Technology, is the co-author of the paper.As we all know, graphene is a two-dimensional crystal composed of carbon atoms with only one layer of atomic thickness. Graphen...
Release time: 2016 - 10 - 23
Recently, an international team of researchers from Tel Aviv University in Israel, the Hebrew University in Jerusalem and the University of Newcastle in the United Kingdom has developed a film containing carbon nanotubes and nanorods that could be used as a wireless implant to induce photostimulation in the retina. Related papers were published in the recent nano express.Light shining on the retina behind the eye is the first step in the visual process, according to a recent report on the Physicist Network. If the macular degeneration causes the photoreceptors on the retina to degenerate, the ...
Release time: 2016 - 10 - 21
According to the membrane separation technology exchange Wechat Public Platform October 9, 2016, the synthetic process of drug molecules is multi-step reaction. Because of the solubility and boiling characteristics of different pharmaceutical intermediates in the synthesis process, and the need for reaction conditions, it often involves a variety of solvents and catalysts, as well as the accompanying process of filtration, drying, rotary evaporation, extraction, crystallization and so on, which is time-consuming and laborious. The continuous production process can reduce the operation steps an...
Release time: 2016 - 10 - 19
The efficiency of perovskite solar cells has reached 22.1%. The chemical formula of perovskite is ABX3. High efficiency perovskite materials are all compounds of MA / FA (A), Pb (B) and halogen elements (X). Doping with more complex cationic compounds is an important means to improve the properties of perovskite, and the main purpose of doping with other cations is to improve the stability of perovskite. However, most of the monovalent cations do not meet the perovskite tolerance factor t formula: t = rA + rI /(rPb + rI), the tolerance factor values need to be between 0.8 and 1.0, but most of ...
Release time: 2016 - 10 - 18
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