Person
Adarsh Singh Sagar
Related publications (6)
Spatially resolved photocurrents in graphene nanoribbon devices
Klaus Kern, Marko Burghard, Stephan Rauschenbach, Kannan Balasubramanian, Adarsh Singh Sagar, Thomas Dufaux
We present here a scanning photocurrent microscopy study of individual graphene nanoribbons, revealing pronounced photocurrent responses close to the nanoribbon/metal contacts. The magnitude of the corresponding photocurrent signal was found to be directly ...
Amer Inst Physics2013Electric field effect in graphite crystallites
Klaus Kern, Marko Burghard, Kannan Balasubramanian, Adarsh Singh Sagar
Graphite is a highly anisotropic crystal with a quasi-two-dimensional electronic structure exhibiting high intrinsic charge carrier mobility. Here, we investigate the effect of an electric field on the resistance of individual graphite crystallites with a ...
2012Graphene-based Field-effect Transistors
With transistors set to reach their smallest possible size in the next decade, the silicon chip is likely to change dramatically, or be replaced entirely. The transistor industry's path which has been largely shaped by Gordon Moore's famous prediction that ...
EPFL2011Polymer-electrolyte gated graphene transistors for analog and digital phase detection
Klaus Kern, Marko Burghard, Kannan Balasubramanian, Adarsh Singh Sagar
We present an alternating current (ac) circuit based on a misoriented bilayer graphene device for analog and digital phase detection. We exploit the ambipolar nature of the transfer characteristics of a misoriented bilayer graphene transistor. The transist ...
2011Marker-free on-the-fly fabrication of graphene devices based on fluorescence quenching
Klaus Kern, Kannan Balasubramanian, Adarsh Singh Sagar
Graphene has been dominating the electronic research community recently, with a brisk surge in proposals for its use in novel devices. The aspirations of 2D-carbon-based electronics largely rely on the availability of a mass-production technique to obtain ...
2010Effect of Stacking Order on the Electric-Field Induced Carrier Modulation in Graphene Bilayers
Klaus Kern, Marko Burghard, Kannan Balasubramanian, Eduardo Jian Hua Lee, Adarsh Singh Sagar
When planar graphene sheets are stacked on top of each other, the electronic structure of the system varies with the position of the subsequent sublattice atoms. Here, we employ scanning photocurrent microscopy to study the disparity in the behavior of cha ...
2009