This week we welcome three undergraduate students to the Materials Chemistry and Analysis Group. Oriane Florent, Caroline Holmes and Alice Townsend started summer projects with the group at our laboratories in UCC.
Oriane arrived from France and will work on the development of direct bandgap, group IV one-dimensional nanoscale systems. This is critical for the advancement of silicon compatible photonics, tunnelling based transistor devices and electronic-photonic hybrid circuits. With her mentor they will target the growth of uniform diameter, direct bandgap Ge1-xSnx alloy nanowires, with large Sn incorporation through conventional catalytic bottom-up growth paradigm employing Sn as catalysts material.
Caroline is currently a Chemistry undergraduate at UCC and will investigate diameter controlled growth of bottom-up grown germanium nanowires. Nanostructures are used throughout the electronics industry, with a recent emphasis on transistors. The integration of semiconductor nanowires into device geometries requires control over their morphology, dimensions, growth orientation and structural defects. In a catalytic bottom-up growth, nanowire diameters can be controlled by the dimension of the catalysts. Control over nanowire diameters, in turn, facilitates regulation over their growth orientation.
Alice is also an undergraduate within the Chemistry Department in UCC and will be exploring the use of nanoparticles for catalysis. She will investigate working with different methods to synthesise silver nano cubes and nano prisms. Using these shape-controlled nanoparticles it is hoped that they can be used as seeds for nanowire growth.