Dr. Navamani K

Staff Profile
Dr. Navamani K
Assistant Professor (Sl .G.)
Dr. Navamani K
Assistant Professor (Sl .G.)
Department of Physics
Portfolio: Member of American Chemical Society
Areas of Interests: 1) Multiscale modeling of charge transport in both ordered and disordered systems (from molecules to materials) using DFT methods, MD and MC simulations, and revisiting the Einstein relation for quantum devices (eg., Shockley diode). 2) Developing suitable models to study the drift-diffusion mobility via quantum many-body theory. 3) Modeling the charge carrier mobilities in two and quasi-two dimensional semiconducting materials, with the aid of Quantum ESPRESSO and electron-phonon coupling using Wannier functions.

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About me
My specializations are the charge transport (CT) in molecular solids, theory and simulations for semiconductors. The CT key parameters are computed through tight-binding Hamiltonian with the aid of density functional theory (DFT) methods. The disorder and structural dynamics effects on charge transfer kinetics are studied by molecular dynamics (MD) and Monte-Carlo (MC) simulations. Currently, I am interested in developing Einstein's diffusion-mobility relation for universal quantum materials, and modeling the resonance coupled Marcus Theory for molecular semiconductors.
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Professional Information

Young Scientist Award 2021 by VD Good Professional Association, INDIA

Junior Research Fellow (2009-2012), DST Project in the Scheme of Young Scientist, Government of India.

Best Youth Award - 2005 for Science contribution, Yuvakendra Trust (Registered), Madurai, INDIA.

Participated the “Summer Training Programme in Physics” (STPIP-2008) organized by the Tamilnadu Academy of Sciences, Science city and Department of Nuclear Physics, University of Madras (From May 19 to June 14, 2008)

Post-Doctoral Fellow (Oct. 2016 - May 2020), Supervisor: Prof. Swapan K. Pati, FNA, FASc, FNASc, FTWAS, Theoretical Sciences Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Bangalore-560 064, INDIA.

Assistant Professor (July, 2016 – Sep. 2016), National Institute of Technology Karnataka, Surathkal - 575025, INDIA.

Assistant Professor (Nov. 2015 - May 2016), Pondicherry Central University - 605014, INDIA.

Ph.D. (Oct. 2009 - Oct. 2015, Full Time-Regular mode), Supervisor: Dr. K. Senthilkumar, Department of Physics, Bharathiar University, Coimbatore - 641046, INDIA.

Dr. K. Navamani (during 2020-21) formulated the diffusion-mobility relation (on the basis of generalized Einstein relation) for universal quantum materials; accordingly he proposed the Navamani-Roichman-Tessler (NRT) diode current density equation for two-dimensional layered systems.

Dr. Navamani (in 2021) proposed the continuum time-delayed hopping model for molecular semiconductors. Besides that, he mainly has developed the entropy-ruled diffusion-mobility relation to study the validity and limitations of original Einstein relation. According to this method, the Shockley diode equation is modified and is named as Navamani-Shockley diode current density equation. This is the quantum version of molecular transport (J-V) equation.

He developed multiscale modeling of charge transport (on the basis of “three-set of analytical procedures”) and revisiting the Einstein relation for molecular Semiconductors (Ref.: Navamani et al., J. Chem. Phys., 2019, 151, 224301, and Navamani et al., RSC Adv., 2018, 8, 30021).

He hypothetically formulated the diffusion coefficient for forth-back oscillated charge carrier motion in the dynamical molecular systems, (Ref.: K. Navamani et al., Phys. Chem. Chem. Phys., 2015, 17, 17729).

He proposed “Density Flux Model on Hopping Conductivity Formula” for Disordered Molecular Solids, (Ref.: K. Navamani et al., J. Phys. Chem. C, 2014, 118, 27754).

American Chemical Society