| AVS 63rd International Symposium & Exhibition | |
| 2D Materials Focus Topic | Thursday Sessions |
| Session 2D-ThA |
| Session: | Surface Chemistry, Functionalization, Bio and Sensor Applications of 2D Materials |
| Presenter: | Paul Sheehan, US Naval Research Laboratory |
| Authors: | P.E. Sheehan, US Naval Research Laboratory SC. Hangarter, US Naval Research Laboratory W.K. Lee, US Naval Research Laboratory S.P. Mulvaney, US Naval Research Laboratory J.T. Robinson, US Naval Research Laboratory S.D. Tsoi, US Naval Research Laboratory K.E. Whitener, US Naval Research Laboratory |
| Correspondent: | Click to Email |
Atomically-thin 2D materials such as graphene, boron nitride, or transition metal dichalcogenides can radically alter the chemistry and physics of surfaces they are placed on. Indeed, the appropriate choice of 2D material and subsequent chemical functionalization can dictate all the principal surface forces including van der Waals, acid-base interactions, electric double layers, and even magnetism. For instance, while graphene completely screens the van der Waals forces of the underlying substrate, boron nitride is completely transparent to these forces. A second example is hydrogenation which enables rapid patterning of ferromagnetic domains in graphene. Such control over surface forces should enable us to master technologically critical processes ranging from ice formation to bacterial adhesion to oriented crystal growth. The methods we have developed for chemically functionalizing and patterning graphene will be presented as well as experimental and theoretical work describing how these changes control the various surface forces. Finally, we will discuss a new technique to transfer surface functionalities in toto from one substrate to another.