The 2nd Annual C.S. Wu Colloquium with Nadya Mason
December 03, 2023
We are excited to announce that we will be hosting Nadya Mason, January 29th at 4PM Eastern Time, for the 2nd Annual Chien-Shiung Wu Colloquium!
Nadya Mason, the Dean of the Pritzker School of Molecular Engineering at the University of Chicago, will give a talk on "Electronic Transport in Strain-Engineered Graphene" at the Davis Auditorium.
See the full abstract of her upcoming talk below:
"There is wide interest in using strain-engineering to modify the physical properties of 2D materials, for both basic science and applications. Deformations of graphene, for example, can lead to the opening of band gaps, as well as the generation of pseudo-magnetic fields and novel electronic states. We demonstrate how controllable, device-compatible strain patterns in graphene can be engineered by depositing graphene on corrugated substrates. In particular, we show that a nearly periodic array of underlying nanospheres creates a strain superlattice in graphene, which exhibits mini-band conductance dips and pseudomagnetic field effects that depend on the magnitude of induced strain. The pseudomagnetic fields are evident both locally and globally, and are consistent with significant flattening of the electronic bands. Control of the strain degree of freedom thus provides a novel platform both for fundamental studies of 2D electron correlations and for prospective applications in 2D electronic devices.
Work supported by NSFunder DMR-1720633 (MRSEC) and ENG-1434147, the ARO under W911NF-19-1-0346, and the UIUC Materials Research Lab."