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BPN878: Scalable synthesis of Core-Vest Nanoparticles assisted by Surface Plasmons

Project ID BPN878
Website
Start Date Wed 2017-Aug-16 09:02:26
Last Updated Fri 2017-Sep-08 09:05:48
Abstract Colloidally produced nanoparticles are emerging as a solution for a variety of applications such as quantum dots, sensing, and functionalized targeted cell therapy. However, the thermodynamically driven process of their fabrication poses several constraints on their size and geometry, the most prominent being the high degree of symmetry in their shape. However, if energy (or matter) could be channeled with super-resolution, more complex architectures would become possible, such as partial cladding of complex nanoparticles with nontrivial shapes. This project explores alternative means of channeling energy into the nanoscale while the colloidal processing chemistry is taking place. We exploit the plasmonic activity of the particle itself to help channel light into a nonuniform heatmap over the particle with sub-particle resolution. We show that surface plasmons which result from the coupling of light with the free electrons in a metal, can be harnessed to achieve a variety of pre-programmed designer core-vest nanostructures. By localizing the energy carried by far-field radiation onto nanometer-sized regions, SPs effectively create hot blueprints that drive self-assembly of composite structures. Here, nano-vests made of titania formed around gold nanostars are computer designed, synthesized, and characterized to illustrate the concept.
Status New
Funding Source Fellowship
IAB Research Area NanoPlasmonics, Microphotonics & Imaging
Researcher(s) Arthur O. Montazeri
Advisor(s) Roya Maboudian, Carlo Carraro
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