1.9k citations · 2.8k across the 10 of their papers we have counts for
10 papers
Two-dimensional covalent crystals by chemical conversion of thin van der Waals materials
Vishnu Sreepal, Mehmet Yagmurcukardes, Kalangi S. Vasu +14
Most of the studied two-dimensional (2D) materials have been obtained by exfoliation of van der Waals crystals. Recently, there has been growing interest in fabricating synthetic 2…
Opening of large band gap in metallic carbon nanotubes by mannose functionalized dendrimers: Experiments and theory
K. S. Vasu, Debabrata Pramanik, Sudipta Kundu +5
Despite many theoretical schemes, the direct experimental observation of supramolecular control on band gap opening in single-walled carbon nanotubes (SWNT) is still lacking. We re…
Electrically controlled water permeation through graphene oxide membranes
K. -G. Zhou, K. S. Vasu, C. T. Cherian +14
Developing 'smart' membranes that allow precise and reversible control of molecular permeation using external stimuli would be of intense interest for many areas of science: from p…
Tuneable Sieving of Ions Using Graphene Oxide Membranes
J. Abraham, K. S. Vasu, C. D. Williams +10
Graphene oxide membranes show exceptional molecular permeation properties, with a promise for many applications. However, their use in ion sieving and desalination technologies is…
Van der Waals pressure and its effect on trapped interlayer molecules
K. S. Vasu, E. Prestat, J. Abraham +9
Van der Waals assembly of two-dimensional (2D) crystals continue attract intense interest due to the prospect of designing novel materials with on-demand properties. One of the uni…
Detection of Sugar-Lectin Interactions by Multivalent Dendritic Sugar Functionalized Single-Walled Carbon Nanotubes
K. S. Vasu, K. Naresh, R. S. Bagul +2
We show that single walled carbon nanotubes (SWNT) decorated with sugar functionalized poly (propyl ether imine) (PETIM) dendrimer is a very sensitive platform to quantitatively de…
Graphene analogue BCN: femtosecond nonlinear optical susceptibility and hot carrier dynamics
Sunil Kumar, N. Kamaraju, K. S. Vasu +3
Third-order nonlinear absorption and refraction coefficients of a few-layer boron carbon nitride (BCN) and reduced graphene oxide (RGO) suspensions have been measured at 3.2 eV in…
Probing top-gated field effect transistor of reduced graphene oxide monolayer made by dielectrophoresis
K. S. Vasu, Biswanath Chakraborty, S. Sampath +1
We demonstrate top-gated field effect transistor made of reduced graphene oxide (RGO) monolayer (graphene) by dielectrophoresis. Raman spectrum of RGO flakes of typical size of 5μm…
Femtosecond Photoexcited Carrier Dynamics in Reduced Graphene Oxide Suspensions and Films
Sunil Kumar, N. Kamaraju, K. S. Vasu +1
We report ultrafast response of femtosecond photoexcited carriers in single layer reduced graphene oxide flakes suspended in water as well as few layer thick film deposited on indi…
Femtosecond carrier dynamics and saturable absorption in graphene suspensions
Sunil Kumar, M. Anija, N. Kamaraju +4
Nonlinear optical properties and carrier relaxation dynamics in graphene, suspended in three different solvents, are investigated using femtosecond (80 fs pulses) Z-scan and degene…