Interfacing Individual Molecules and Nanofabrication
Friday, September 30, 2016
3:15 pm - 4:30 pm
Ashwin Gopinath, Postdoctoral Researcher from the California Institute of Technology
Conventional top-down nanofabrication, over the last six decades, has enabled almost all the complex electronic and optical devices around us. Parallely, bottom-up self-assembly processes within natural inorganic/organic nanostructures have also been studied extensively since they enable structures with properties unattainable by any top-down method. While both these fields have independently matured, ongoing efforts to create hybrid nanostructures by combining the two has been fraught with technical challenges. The main roadblock is the absence of a scalable method to precisely organize components built bottom-up within top-down nanofabricated devices.This talk will introduce a lithographically directed self-assembly technique as a possible solution to the aforementioned roadblock. The method primarily involves utilizing DNA origami, a technique to create arbitrary 2/3D DNA nanoparticles, as a modular adaptor to bridge the molecular and lithographic length scale. Additionally, as a proof of principle, the technique is used to organize discrete light emitters inside nanofabricated photonic crystal cavities (PCCs) for measuring as well as precisely controlling the optical properties of the PCCs. Lastly, new devices enabled by this technique will be discussed. The first is designed to study superradiant interaction between discrete rare earth ions embedded within a single optical resonator and the second enables highly multiplexed study of individual biomolecules.