Tuning and synthesis of metallic nanostructures by mechanical compression

DWPI Title: Synthesis of metallic nanomaterial e.g. nanorod, nanowire or nanosheet by mechanical compression, involves compressing film containing metallic nanoparticles in pressure-transmitting medium to pressure above threshold pressure
Abstract: The present invention provides a pressure-induced phase transformation process to engineer metal nanoparticle architectures and to fabricate new nanostructured materials. The reversible changes of the nanoparticle unit cell dimension under pressure allow precise control over interparticle separation in 2D or 3D nanoparticle assemblies, offering unique robustness for interrogation of both quantum and classic coupling interactions. Irreversible changes above a threshold pressure of about 8 GPa enables new nanostructures, such as nanorods, nanowires, or nanosheets.
Use: Synthesis of metallic nanomaterial e.g. nanorod, nanowire or nanosheet by mechanical compression (all claimed) used for fabrication of multi-dimensional ordered assemblies in nanoelectronic and optic devices.
Advantage: The method is a simple and efficient nanoengineering process. The method enables efficient formation of nanowires of uniform length and ordered, ultrahigh density of nanowire arrays. The use of polymer medium provides excellent compressibility to maintain the ordered mesophase and favorable orientation. The method enables the reversible changes of nanoparticles unit cell dimension under pressure which allows control over interparticles separation in two-dimensional or three-dimensional nanoparticles assemblies leading to unique robustness for quantum and classic coupling interactions. The method provides well integrated material due to the pressure-driven nanofabrication processes.
Novelty: Synthesis of metallic nanomaterial by mechanical compression involves compressing a film comprising a periodically ordered assembly of metallic nanoparticles in a pressure-transmitting medium to a pressure above a threshold pressure above which the metallic nanoparticles contact, coalesce and sinter.
Filed: 5/30/2013
Application Number: US13905965A
Tech ID: SD 11478.2
This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention.
Data from Derwent World Patents Index, provided by Clarivate
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