AVS 61st International Symposium & Exhibition
    Manufacturing Science and Technology Thursday Sessions
       Session MS+PS+TF-ThA

Paper MS+PS+TF-ThA10
Van der Waals Materials on Nanostructured Paper -- Aqueous Gating and Sensing Application

Thursday, November 13, 2014, 5:20 pm, Room 302

Session: Functionalization  of Paper and Textiles & Their Applications
Presenter: Wenzong Bao, University of Maryland, College Park
Authors: W. Bao, University of Maryland, College Park
Z. Fang, University of Maryland, College Park
J. Wan, University of Maryland, College Park
L.B. Hu, University of Maryland, College Park
Correspondent: Click to Email
We report the first aqueous transistors on a bilayer-structured paper with a nanoscale smoother surface. Such transistors have a planar structure with source, drain and gate electrodes on the same surface of paper, and the mesoporous paper is used as an electrolyte container. Such transistors are enabled by a bilayer-structured all-cellulose paper with nano-fibrillated cellulose on the top surface that leads to an excellent surface smoothness, while the rest of micro-sized cellulose fibers can absorb electrolyte effectively. Based on 2D Van der Waals materials such as graphene and MoS2, we demonstrate high-performance transistors with large on-off ratio. Our devices also show excellent bending flexibility. Such planar transistors with absorbed electrolyte gating can be used as sensors integrated with other components towards paper microfluidic systems.