Integrated Calendar

Studying the transition of nanostructures as they develop from the zero-dimensional to the one-dimensional regime is significant for unveiling the modifications that occur in the electronic structure of the particle as its length to width aspect ratio is increased. Such understanding can lead to better design and control of the particle properties, making them attractive for a wide spectrum of technological applications. The ongoing improvements in the control of shape and morphology of nanoparticles in colloidal synthesis, which allows forming structures of similar composition but of different dimensionalities and shapes, open the way for probing such dimensionality effects.
In this talk, I will present several effects involving the 0D to 1D transition in CdSe/CdS core/shell nano heterostructures of different morphologies including “sphere in a sphere”, “sphere in a rod” and “rod in a rod”.
Using these systems, I’ll demonstrate and discuss the changes which occur in the optical properties, and in particular in emission and absorption polarizations, as the dimensionality of the particles and of their cores changes. I’ll also discuss the use of these particles as donors in energy transfer processes, and show how the efficiency of the energy transfer and the donor’s survival probability depend on the dimensions and dimensionalities of the particles, and may lead to systems with enhanced FRET