93 citations · 93 across the 1 of their papers we have counts for
11 papers
Ultrafast and Nanoscale Plasmonic Phenomena in Exfoliated Graphene Revealed by Infrared Pump-Probe Nanoscopy
Martin Wagner, Zhe Fei, Alexander S. McLeod +14
Pump-probe spectroscopy is central for exploring ultrafast dynamics of fundamental excitations, collective modes and energy transfer processes. Typically carried out using conventi…
Transport in Suspended Monolayer and Bilayer Graphene Under Strain: A New Platform for Material Studies
Hang Zhang, Jhao-Wun Huang, Jairo Velasco +9
We develop two types of graphene devices based on nanoelectromechanical systems (NEMS), that allows transport measurement in the presence of in situ strain modulation. Different mo…
Transport Measurement of Landau level Gaps in Bilayer Graphene
J. Velasco, Y. Lee, Z. Zhao +4
Landau level gaps are important parameters for understanding electronic interactions and symmetry-broken processes in bilayer graphene (BLG). Here we present transport spectroscopy…
Visualizing Electrical Breakdown and ON/OFF States in Electrically Switchable Suspended Graphene Break Junctions
Hang Zhang, Wenzhong Bao, Zeng Zhao +8
Narrow gaps are formed in suspended single to few layer graphene devices using a pulsed electrical breakdown technique. The conductance of the resulting devices can be programmed b…
Aryl Functionalization as a Route to Band Gap Engineering in Single Layer Graphene Devices
Hang Zhang, Elena Bekyarova, Jhao-Wun Huang +5
Chemical functionalization is a promising route to band gap engineering of graphene. We chemically grafted nitrophenyl groups onto exfoliated single-layer graphene sheets in the fo…
Infrared nanoscopy of Dirac plasmons at the graphene-SiO2 interface
Zhe Fei, Gregory O. Andreev, Wenzhong Bao +13
We report on infrared (IR) nanoscopy of 2D plasmon excitations of Dirac fermions in graphene. This is achieved by confining mid-IR radiation at the apex of a nanoscale tip: an appr…