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Exploring New Physics of Nanoparticle Supercrystals by High Pressure Small Angle X-ray Diffraction

By Zhongwu Wang, Ken Finkelstein and Detlef-m. Smilgies


Superlattices built from self-assembled nanoparticles (NPs) combine the size-tuned unique properties of single crystals with the collective properties of newly created (one- two- and threedimensional) ordered arrays and promise the next generation of devices spanning a variety of applications1-4. For example, in nature, a colorless opal is a disordered aggregate of silica particles. When the silica particles are ordered, the opal changes to a color correlated with the size of the self-assembled particles3. In the laboratory, several approaches, including templating, soft lithography and supramolecular chemistry, have enabled creation of numerous superlattices comprising NP building blocks3,5-7. These NP nanobuilding blocks fall mostly into three types of order displaying variable packing densities and properties: Face-Centered-Cubi

Year: 2013
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