Amoolya Grandhi Rose Hills
Supercrystal Self-Assembly of Quantum Dots
Quantum dot supercrystals hold a lot of potential for future nanophotonics due to their unique optical and electric properties. Quantum dots, which are semiconducting nanoparticles, can act like atoms and arrange into a crystal structure, forming something called a supercrystal. These supercrystals have been found to form interesting shapes such as spheres, rods, and various prisms. However, my research recently found that they can also take the shape of half-spheres or donuts, which has never been documented before. These new shapes both pack differently and likely have unique optical properties (the shape of a supercrystal has been found to affect its electromagnetic properties). My project aims to study the supercrystal formation of quantum dots on an air-liquid interface and investigate the effect of subphase surface energy and micelle formation on supercrystal size and shape. Understanding what controls the shape of supercrystals could enable the discovery of novel fabrication processes and help uncover new material properties.