| AVS 63rd International Symposium & Exhibition | |
| 2D Materials Focus Topic | Thursday Sessions |
| Session 2D-ThP |
| Session: | 2D Materials Poster Session |
| Presenter: | Wenbi Lai, University of Dayton |
| Authors: | A.T. Juhl, Air Force Research Laboratory N.R. Glavin, Air Force Research Laboratory G.M. Leuty, Air Force Research Laboratory R.J. Berry, Air Force Research Laboratory R.R. Naik, Air Force Research Laboratory M.F. Durstock, Air Force Research Laboratory E.M. Heckman, Air Force Research Laboratory R.S. Aga, Air Force Research Laboratory E.B. Kreit, Air Force Research Laboratory W. Lai, University of Dayton C. Muratore, University of Dayton |
| Correspondent: | Click to Email |
Recently, we utilized phage display techniques to identify peptides that selectively bind to 2D targets such as electrically conductive graphene and semiconducting MoS2 in the forms of micro-scale fine powder, bulk crystals, and ultra-thin films (<1.5-5 nm). To examine the nature of peptide binding to these materials, we produced different ‘inks’ comprised of peptide molecules known to selectively bind to each material in solvents for printing on diverse surfaces including SiO2, gold, and PDMS. Each ink only binds to one type of particle (graphene or MoS2). We then exposed the substrates printed with peptides to suspensions of 2D particles.The particles demonstrate strong binding to the printed peptide surfaces, demonstrating a new scalable technique for large area device fabrication from 2D materials on diverse surfaces. To further understand peptide-MoS2 surface binding mechanisms, molecular dynamics simulations employing a newly developed atomic force field predicting the surface energy of MoS2 films were conducted. Integration of binding peptides into the model in conjunction with experimental results promote fundamental understanding of molecular interactions with MoS2 and other TMD materials for development of novel sensors and devices.