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- Rangeet Bhattacharyya, Baris Key, Hailong Chen, Adam S Best, Anthony F Hollenkamp, Clare P Grey
- Nature materials
- 2010

Lithium metal has the highest volumetric and gravimetric energy density of all negative-electrode materials when used as an electrode material in a lithium rechargeable battery. However, the formation of lithium dendrites and/or 'moss' on the metal electrode surface can lead to short circuits following several electrochemical charge-discharge cycles,… (More)

- B. Mukhopadhyay, R. Bhattacharyya
- Applied Mathematics and Computation
- 2008

- Baris Key, Rangeet Bhattacharyya, Mathieu Morcrette, Vincent Seznéc, Jean-Marie Tarascon, Clare P Grey
- Journal of the American Chemical Society
- 2009

Lithium-ion batteries (LIBs) containing silicon negative electrodes have been the subject of much recent investigation because of the extremely large gravimetric and volumetric capacity of silicon. The crystalline-to-amorphous phase transition that occurs on electrochemical Li insertion into crystalline Si, during the first discharge, hinders attempts to… (More)

A new method of measuring long spin-lattice relaxation times (T1) is proposed. Being a single scan technique, the method is at least one order of magnitude faster than the conventional technique. This method (Single-Scan or Slice Selected Inversion Recovery or SSIR) relies on the slice selection technique. The method is experimentally verified and compared… (More)

- Rangeet Bhattacharyya, Lucio Frydman
- The Journal of chemical physics
- 2007

The acquisition of ideal powder line shapes remains a recurring challenge in solid-state wideline nuclear magnetic resonance (NMR). Certain species, particularly quadrupolar spins in sites associated with large electric field gradients, are difficult to excite uniformly and with good efficiencies. This paper discusses some of the opportunities that arise… (More)

- B. Mukhopadhyay, R. Bhattacharyya
- Int. J. Systems Science
- 2007

A three variable mathematical model describing the propagation of an infectious disease in a human population is proposed and analyzed. The human population is assumed to live in two distinct habitats with no inter-habitat migration. The infectious agent disperse randomly among the said habitats. Methods of upper and lower solutions are used to establish… (More)

- B. Mukhopadhyay, R. Bhattacharyya
- Int. J. Math. Mathematical Sciences
- 2004

A mathematical model describing the biochemical interactions of the luteinizing hormone (LH), luteinizing hormone–releasing hormone (LHRH), and testosterone (T) is presented. The model structure consists of a negative feedback mechanism with transportation and secretion delays of different hormones. A comparison of stability and bifurcation analysis in the… (More)

- N. Banerjee, A. K. Saha, R. Karmakar, R. Bhattacharyya
- Simulation Modelling Practice and Theory
- 2009

- Reut Avni, Oren Mangoubi, Rangeet Bhattacharyya, Hadassa Degani, Lucio Frydman
- Journal of magnetic resonance
- 2009

NMR experiments devised to aid in analyses of tissues include magnetization transfer (MT), which can highlight the signals of biological macromolecules through cross-relaxation and/or chemical exchange processes with the bulk (1)H water resonance, and high-resolution magic-angle-spinning (HRMAS) methods, akin to those used in solid-state NMR to introduce… (More)

- Ranabir Das, Rangeet Bhattacharyya, Anil Kumar
- Journal of magnetic resonance
- 2004

Quantum information processing by NMR with small number of qubits is well established. Scaling to higher number of qubits is hindered by two major requirements (i) mutual coupling among qubits and (ii) qubit addressability. It has been demonstrated that mutual coupling can be increased by using residual dipolar couplings among spins by orienting the spin… (More)