вторник, 26 сентября 2017 г.

Assembly of nanoparticles proceeds like a zipperViruses and…

Assembly of nanoparticles proceeds like a zipperViruses and…


Assembly of nanoparticles proceeds like a zipper


Viruses and nanoparticles can be assembled into processable superlattice wires according to scientists from Aalto University Finland



It has always been the Holy Grail of materials science to describe and control the material’s structure-function relationship. Nanoparticles are an attractive class of components to be used in functional materials because they exhibit size-dependent properties, such as superparamagnetism and plasmonic absorption of light. Furthermore, controlling the arrangement of nanoparticles can result in unforeseen properties, but such studies are hard to carry out due to limited efficient approaches to produce well-defined three-dimensional nanostructures.


According to scientists from the Biohybrid Materials Group of Aalto University Finland led by Prof. Mauri Kostiainen, nature’s own charged nanoparticles – protein cages and viruses – can be utilized to determine the structure of composite nanomaterials.


Viruses and proteins are ideal model particles to be used in materials science, as they are genetically encoded and have an atomically precise structure. These well-defined biological particles can be used to guide the arrangement of other nanoparticles in an aqueous solution. In the present study, the researchers show that combining native Tobacco Mosaic Virus with gold nanoparticles in a controlled manner leads to metal-protein superlattice wires.



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