| Abstract Scope |
Precise control of structural parameters through nanoscale engineering to improve optical and electronic properties of nanoparticles continuously remains an outstanding challenge. Previous work on nanoparticle assembly has been conducted largely at ambient pressure. Here I will present a new Pressure-Induced Assembly and Fabrication method in which we applied high pressure or stress to nanoparticle arrays to induce structural phase transition and to consolidate new nanomaterials with precisely controlled structures and tunable properties. By manipulating nanoparticle coupling through external pressure, a reversible change in their assemblies and properties has been achieved and demonstrated. Additionally, over a certain threshold, the applied pressure will force these nanoparticles into coalescence, thereby allowing the formation and consolidation of one- to three-dimensional nanostructures. Through pressure induced nanoparticle assembly, materials engineering and synthesis become remarkably flexible without relying on traditional crystallization process.
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