Electrochemically Top Gated Graphene: Monitoring Dopants by Raman Scattering (2007)
Das, A., Pisana, S., Piscanec, S., Chakraborty, B., Saha, S. K., Waghmare, U. V., ...
We demonstrate electrochemical top gating of graphene by using a solid polymer electrolyte. This allows to reach much higher electron and hole doping than standard back gating. In-situ Raman...
Rule Mining for Dynamic Databases (2005)
Association rules identify associations among data items and were introduced in 1993 by Agarwal et al.. Most of the algorithms to find association rules deal with the static databases. There are very...
Cosmology with decaying tachyon matter (2005)
Das, A, Gupta, Shashikant, Saini, Tarun Deep, Kar, Sayan
We investigate the case of a homogeneous tachyon field coupled to gravity in a spatially flat Friedmann-Robertson-Walker spacetime.Assuming the field evolution to be exponentially decaying with time...
Presence of sulfide minerals in flotation tailings poses an environmental threat due to enhanced acid formation and heavy metal ion dissolution. ‘Acidithiobacillus’, group of microorganisms, play...
Noncommutativity of Boundary Closed String Coordinates for an Open Membrane on p-Brane (2001)
Das, A, Maharana, J, Melikyan, A
We study the dynamics of an open membrane with a cylindrical topology, in the background of a constant three form. We use the action, due to Bergshoeff, London and Townsend, to study the...
Magnetic structure of sodium and potassium doped lanthanum manganites (2000)
Das, A, Sahana, M, Yusuf, SM, Rao, Madhav L, Shivakumara, C, Hegde, MS
Neutron diffraction, depolarization, and magnetization measurements were carried out on Na $(La_{0.82}Na_{0.13}MnO_{2.93})$ and K $(La_{0.82}K_{0.08}MnO_{2.89})$ doped lanthanum manganites. The study...
Octree Encoding of B-rep Based Objects (1996)
Krishnan, R, Das, A, Gurumoorthy, B
An octree representation of a solid is useful in applications such as finite element mesh generation, robot path planning and NC path generation. It consists of approximating the solid by variably...
Flow phenomena and its impact on air-sparged hydrocyclone flotation of quartz (1995)
Fluid flow phenomena and therefore the flotation efficiency of air-sparged hydrocyclone (ASH) flotation are strongly dependent on operating and design variables such as air and slurry flow rates,...