As materials dominated by their surface, atomically thin two-dimensional (2D) materials cannot be thought of as isolated membranes, but instead as a product of both their intrinsic properties and their local environment. This introduces many post-synthesis knobs to modify the electronic, magnetic, optical, mechanical, superconducting, and topological properties of 2D materials by design. For instance, the ability to stack freestanding films without traditional epitaxial considerations adds new degrees of freedom, which cannot be explored in bulk or as-synthesized materials, like tailoring proximity effects due to neighboring films, tuning correlations through the creation of long-range moire potentials, or creating three-dimensional deformations in 2D sheets. This session will focus on the various methods that have been explored to reconfigure, switch and tune the properties of the 2D materials after synthesis. Examples include: proximity effects (dielectric, superconducting and magnetic); relative twist and dynamical slip between layers including engineering the Moire potential; strain engineering; defect engineering; chemical functionalization; and the creation of transient excited-state phases and phenomena on ultrafast timescales using photons, x-rays and electrons. Additional focus will include exploring applications to generate reconfigurable properties, new quantum materials and systems, multifunctional surfaces, straintronics, twistronics, and stretchable electronics.

2D materials defects graphene interface magnetic properties nanoscale optical properties quantum materials strain relationship