• Direct Observation of Charge Transfer between NOx and Monolayer MoS2 by Operando Scanning Photoelectron Microscopy 

      Jensen, Ingvild Julie Thue; Ali, Ayaz; Zeller, Patrick; Amati, Matteo; Schrade, Matthias; Vullum, Per Erik; Benthem, Marta; Bisht, Prashant; Taniguchi, Takashi; Watanabe, Kenji; Mehta, Bodh R.; Gregoratti, Luca; Belle, Branson (Peer reviewed; Journal article, 2021)
      Atomically thin transition-metal dichalcogenides (MoS2, WSe2, etc.) have long been touted as promising materials for gas detection because of their tunable band gaps; however, the sensing mechanism, based on a charge-transfer ...
    • High-Performance and Ultralow-Noise Two-Dimensional Heterostructure Field-Effect Transistors with One-Dimensional Electrical Contacts 

      Behera, Aroop; Harris, Charles; Pete, Douglas; Delker, Collin; Vullum, Per Erik; Benthem, Marta; Koybasi, Ozhan; Taniguchi, Takashi; Watanabe, Kenji; Belle, Branson; Das, Suprem (Peer reviewed; Journal article, 2021)
      Two-dimensional heterostructure field-effect transistors (2D-HFETs) with one-dimensional electrical contacts to atomically thin channels have recently shown great device performance, such as reduced contact resistance, ...
    • Single digit parts-per-billion NOx detection using MoS2/hBN transistors 

      Ali, Ayaz; Koybasi, Ozhan; Xing, Wen; Wright, Daniel Nilsen; Varandani, Deepak; Taniguchi, Takashi; Watanabe, Kenji; Mehta, Bodh R.; Belle, Branson (Peer reviewed; Journal article, 2020)
      2D materials offer excellent possibilities for high performance gas detection due to their high surface-to-volume ratio, high surface activities, tunable electronic properties and dramatic change in resistivity upon molecular ...
    • Temperature-Dependent Adhesion in van der Waals Heterostructures 

      Polfus, Jonathan M.; Benthem, Marta; Ali, Ayaz; Barragan-Yani, Daniel; Vullum, Per Erik; Sunding, Martin Fleissner; Taniguchi, Takashi; Watanabe, Kenji; Belle, Branson (Peer reviewed; Journal article, 2021)
      The interlayer coupling between 2D materials is immensely important for both the fundamental understanding of these systems, and for the development of transfer techniques for the fabrication of van der Waals (vdW) ...