Prema Rani

Scopus Publications

Synergistic tuning of photoluminescence and biocompatibility in CaS phosphor through dopant combinations of Eu³⁺, Dy³⁺, and Tm³⁺
V. Kavitha, M. Prema Rani, D. Sivaganesh, and S. Ponsuriyaprakash
Springer Science and Business Media LLC



Unveiling the luminescent brilliance of europium-sourced cerium oxide: a comprehensive exploration for biomedical advancements through in vitro and in vivo studies
K. Vignesh, D. Sivaganesh, V. Kavitha, and M. Prema Rani
Springer Science and Business Media LLC



Sol–gel fabricated Dy³⁺-activated CaS phosphors: a view on photoluminescence, structural, morphological, lifetime, and in vitro analysis
V. Kavitha, M. Prema Rani, D. Sivaganesh, and K. Vignesh
Springer Science and Business Media LLC



An Investigation of the Luminescence and Hemocompatibility Properties of Eu³⁺ Doped SrS Synthesized Via Sol–Gel Route
V. Kavitha and M. Prema Rani
Springer Science and Business Media LLC



Ho³⁺-Induced ZnO: Structural, Electron Density Distribution and Antibacterial Activity for Biomedical Application
K. Vignesh, D. Sivaganesh, S. Saravanakumar, and M. Prema Rani
Springer Science and Business Media LLC



The influence of Tm³⁺ on the structural, morphological, lifetime, haemocompatibility, and optical properties of sol–gel-synthesized CaS phosphors
V. Kavitha and M. Prema Rani
Springer Science and Business Media LLC



Fabrication of red-emitting Eu³⁺-induced CaS phosphors: a view of optical, in vitro, lifetime, structural and morphological studies for biomedical applications
V. Kavitha and M. Prema Rani
Springer Science and Business Media LLC



Synthesis and characterisation of yittrium doped cerium oxide nanoparticles and their efficient antibacterial application invitro against gram-positive and gram-negative pathogens
K. Vignesh, D. Sivaganesh, S. Saravanakumar, and M. Prema Rani
Elsevier BV



In Vitro Studies of Ce-Doped Hydroxyapatite Synthesized by Sol–Gel Method for Biomedical Applications
S. Saranya and M. Prema Rani
Springer Science and Business Media LLC



Sol gel synthesis of Niobium influence on Hydroxyapatite: A view of invitro, structural, morphological and studies for Biomedical Applications
S. Saranya and M. Prema Rani
Elsevier BV



Analysis of structural, optical and charge density distribution studies on Zn<inf>1-x</inf>Mn<inf>x</inf>S nanostructures
S. Saravanakumar, D. Sivaganesh, K.S. Syed Ali, M. Charles Robert, M. Prema Rani, R. Chokkalingam, and R. Saravanan
Elsevier BV
Abstract The phasepure nanostructures of Zn1-xMnxS (x = 0.0, 0.04, 0.06 and 0.08) has been synthesized by using chemical precipitation method. The prepared nanostructures are characterized by powder X-ray diffraction (PXRD) method. The structural properties are analyzed through Rietveld refinement analysis. The charge density distribution studies are also done using maximum entropy method (MEM). The bonding features have been analyzed using MEM method. The morphological studies are done using Scanning Electron Microscopy (SEM) and it confirms that the prepared systems are in nano range. The optical characterization has also been done through UV spectrophotometer.


Solubility of Mn stabilized cubic zirconia nanostructures
S. Saravanakumar, J. Kamalaveni, M. Prema Rani, and R. Saravanan
Springer Science and Business Media LLC



Metal and alloy bonding - An experimental analysis: Charge density in metals and alloys
R. Saravanan and M. Prema Rani
Springer London



Influence of Silicon and boron doping on the thermal conductivity of n-GaAs single crystals
M. Prema Rani and R. Saravanan
Trans Tech Publications, Ltd.
Thermal conductivity of three different GaAs crystals, one grown by Liquid Encapsulated Czochralski technique and the other two samples grown by Vertical Bridgman technique have been experimentally measured at temperatures 310 K to 360 K. Two crystals are undoped and semi insulating and one crystal is conductive which is doped with Si and B(Silicon ≈ 4x1015 cm-3 and Boron ≈ 8x 1015cm-3). It has been experimentally observed that doping of silicon and boron gives rise to an increase in thermal conductivity.


Structural analysis of Al, Ni, and Cu using the maximum entropy method, multipole and pair distribution function
Muthaian Charles Robert, Ramachandran Saravanan, Krishnamoorthy Saravanakumar, and Murugesan Prema Rani
Walter de Gruyter GmbH
The average and local structures of the metals Al, Ni, and Cu have been elucidated for the first time using the MEM (maximum entropy method), multipole and PDF (pair distribution function). The bonding between the constituent atoms in all these systems is found to be well pronounced and clearly seen from the electron density maps. The MEM maps of all three systems show the spherical core nature of the atoms. The mid bond electron density profiles of Al, Ni, and Cu reveal the metallic nature of the bonding. The local structure using the PDF profile of Ni is compared with that of previously reported results. The R value in the present work using low Q XRD data for the PDF analysis of Ni is close to the value in the literature using high Q synchrotron data. The cell parameters and displacement parameters are also studied and compared with the reported values.


X-ray characterization of Ag impurities in Na<inf>1-x</inf>Ag<inf>x</inf>Cl
N. Hazeen, K.S. Syed Ali, M. Prema Rani, and R. Saravanan
Trans Tech Publications Ltd.



Maximum entropy method and multipole analysis of the bonding in sodium and vanadium metals
R Saravanan and M Prema Rani
IOP Publishing
The nature of bonding and the charge distribution in sodium and vanadium metals have been analysed using the reported x-ray data of these metals. The maximum entropy method (MEM) and multipole analysis have been used. The bonding in these metals has been elucidated and analysed. The mid-bond densities in sodium and vanadium are found to be 0.014 and 0.723 electron Å−3 respectively, giving an indication of the strength of the bonds in these materials. From the multipole analysis, the sodium atom is found to contract more than the vanadium atom.


Bonding in CoAl and NiAl metal alloys using multipole and MEM techniques
R. Saravanan and M. Prema Rani
Elsevier BV