Kannan Balasubramanian

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Publications associées (29)

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Site-Specific Self-Assembled Liquid-Gated ZnO Nanowire Transistors for Sensing Applications

Klaus Kern, Kannan Balasubramanian

A scalable bottom-up solution-based approach for the site-specific realization of ZnO nanowire (ZnO-NW)-based field-effect transistors for sensing applications in liquids is reported. The nanowires are grown across pre-defined electrodes patterned by photo ...

2010

Effect of Stacking Order on the Electric-Field Induced Carrier Modulation in Graphene Bilayers

Klaus Kern, Marko Burghard, Kannan Balasubramanian

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 ...

American Chemical Society (ACS)2009

Spatially resolved photocurrents in graphene nanoribbon devices

Klaus Kern, Marko Burghard, Stephan Rauschenbach, Kannan Balasubramanian

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 Physics2013

Vertical arrays of nanofluidic channels fabricated without nanolithography

Klaus Kern, Kannan Balasubramanian, Floriano Traversi

Vertical arrays of sealed nanofluidic channels, in which both cross-sectional dimensions are controllable down to 10 nm, were fabricated by selective side etching of a SiGe heterostructure comprised of layers of alternating Ge fractions. Capillary filling ...

2009

Electrochemical modification of graphene

Klaus Kern, Marko Burghard, Kannan Balasubramanian

Nanoparticles on an atomic carpet: Individual graphene sheets have been decorated with metal nanoparticles through electrochemistry. The attachment of Pd particles onto graphene renders it sensitive to hydrogen. The controlled functionalization of graphene ...

Wiley2008

Applications of the Static Quenching of Rhodamine B by Carbon Nanotubes

Klaus Kern, Kannan Balasubramanian

We report here on the interaction of the fluorescent dye rhodamine B (RB) with single-walled carbon nanotubes (SWCNTs). We observe that SWCNTs statically quench the fluorescence of RB by forming a stable ground state complex. Careful spectroscopic analysis ...

2009

Chemically exfoliated large-area two-dimensional flakes of molybdenum disulfide for device applications

Klaus Kern, Kannan Balasubramanian

A solution-based exfoliation method for obtaining large-area two-dimensional flakes of molybdenum disulfide, followed by the fabrication of electrical devices is presented in this manuscript. The exfoliation method is based on the use of an aprotic solvent ...

Amer Inst Physics2013

Electronic-band-structure mapping of nanotube transistors by scanning photocurrent microscopy

Klaus Kern, Marko Burghard, Kannan Balasubramanian

2007

Label-Free Detection of Few Copies of DNA with Carbon Nanotube Impedance Biosensors

Klaus Kern, Kannan Balasubramanian

Wiley-VCH Verlag GmbH2011