Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

&nbsp;

&nbsp;

VIT University

Department of Physics

Single crystal of piperazinium L-tartrate (PPLT) was grown by slow cooling technique. The crystallanity of grown single crystal was characterized by powder XRD analysis. The solubility, metastable zonewidth and induction period were determined experimentally by adopting gravimetric, polythermal and isothermal method respectively. The experimentally determined interfacial energies agree very well with the theoretically estimated values. The nucleation parameters such as Gibbs free energy change, radius of critical nucleus, nucleation rate and number of molecules present in the critical nuclei of PPLT crystal were evaluated based on the classical theory of nucleation. The nonlinear optical property of the grown crystal was analyzed by using a Q-switched Nd:YAG laser and the second harmonic generation efficiency of the grown crystal was compared with KDP. © 2014 WILEY-VCH Verlag GmbH &amp; Co. KGaA, Weinheim.

VIT Unitversity

School of Advanced Sciences

Vellore Campus

Crystal Research and Technology

Studies on growth and nucleation kinetics of Piperazinium L-Tartrate (PPLT) single crystal

Single crystals of γ-glycine in the presence of cesium chloride were grown from aqueous solution by low temperature solution growth technique. The phase purity and crystal structure of the grown crystals were confirmed by Powder X-ray diffraction analysis. The presence of functional groups were confirmed by FT-IR spectrum. Thermal analysis of the grown crystal was determined by thermogravimetric and differential thermal analysis (TG/DTA), which results the thermal stability of the grown crystal. The optical absorption and lower cut-off values were ascertained by recorded UV-Visible spectrum of γ-glycine crystals. The existence of second harmonic generation efficiency of frequency doubling was found to be 6 times greater than that of KDP. © 2014 WILEY-VCH Verlag GmbH &amp; Co. KGaA, Weinheim.

Effect of cesium chloride addition on crystal growth, structural, thermal and optical properties of γ-glycine single crystal

Single crystals of multifunctional Ca0.9Nd0.1Ti0.9Al0.1O3 have been grown in air and also in argon atmosphere using an optical floating zone technique.

World University root node

CrystEngComm

Optical and spectroscopic studies of Ca0.9Nd0.1Ti0.9Al0.1O3 single crystals grown by an optical floating zone technique

Materials Today: Proceedings

Performance Investigation of Silicon Solar Cells using Grating Based Back Reflector

Fulltext

Procedia Materials Science

Design and Analysis of Thin Film Silicon Solar Cells Using FDTD Method

Single crystal of 2-[2-(4-diethylamino-phenyl)-vinyl)-1-ethyl-pyridiniumiodide monohydrate (EDEASI) has been synthesized by the Knoevenagel condensation reaction method. The synthesized compound was purified by successive recrystallization. Good quality single crystals were obtained by the slow evaporation method. The single crystal X-ray diffraction analysis has been carried out to determine cell parameters. It was found that the title material crystallize in the triclinic crystal system with space group PT. Crystalline nature of the grown crystal was identified from powder X-ray diffraction pattern. The FT-IR spectrum was recorded to identify the various functional groups present in the compound. The proton NMR spectrum has been recorded to identify the presence of particular hydrogen nuclei present in the synthesised material. The optical transparency range and cut off wavelength of the grown crystal have been identified by UV-Vis-NIR spectroscopy studies. ThemechanicaJ properties of the grown crystal were measured by Vicker's microhardness method. © 2015 Scientific Publishers. All Rights Reserved.

Journal of the Indian Chemical Society

Studies on the growth,spectral,optical and mechanical properties of organic single crystal: 2-[2-(4-Diethylamino-phenyI)-vinyl]-l-ethyl-pyridiniumiodide monohydrate

Manganese oxides are one of the most valuable materials for batteries, fuel cells and catalysis. Herein, we report the change in morphology and phase of as-synthesized Mn2O3 by inserting Na+ ions. In particular, Mn2O3 nanoparticles were first transformed to 2 nm thin Na0.55Mn2O4 ·1.5H2O nanosheets and nanobelts via hydrothermal exfoliation and Na cation intercalation, and finally to sub-mm ultra-long single crystalline Na4Mn9O18nanowires. This paper reports the morphology and phase-dependent magnetic and catalytic (CO oxidation) properties of the as-synthesized nanostructured Na intercalated Mn-based materials.

Scientific Reports

Understanding hydrothermal transformation from Mn2O3 particles to Na0.55Mn2O4·1.5H2O nanosheets, nanobelts, and single crystalline ultra-long Na4Mn9O18 nanowires

AbstractThe freeze-drying method of metal oxides synthesis has a number of advantages such as high homogeneity, varying porous structures, morphologies and uniform particle size distribution, etc. Because of these advantages, the binary metal oxides ZnO, TiO

Department of Chemistry

Chemical Papers

Freeze-drying synthesis and characterisation of Na composites of ZnO, TiO2 and ZnTiO3 semiconductor oxides

CuO doped Sr2Bi4Ti5O18 ferroelectric ceramics were prepared by standard solid state reaction method. The prepared samples were investigated by XRD, Density, SEM, EDAX and Dielectric studies. Phase pure tetragonal structure was confirmed from XRD analysis. The highest density value of 6.70 g/cm3 is obtained from density measurement. Microstructure and elemental analysis were done by SEM-EDAX studies. The Curie temperature of the prepared samples was found out by dielectric spectroscopic technique. The highest Tc of 313 °C is observed at the dopant level of 1.0 mol %. After adding CuO as dopant the dielectric properties were improved. This modified ferroelectric ceramics has potential applications in ferroelectric memory devices. © 2014, Sphinx Knowledge House. All rights reserved.

International Journal of ChemTech Research

Structural and dielectric studies of CuO Doped Sr2Bi4Ti5O18 ferroelectric ceramics

The preparation of 1D WS2 and MoS2 flexible nanoribbons by laser-induced unzipping of the nanotubes is reported. The nanoribbons are of high quality, uniform width, and devoid of surface contamination. The zig-zag edges in WS2 nanoribbons give rise to ferromagnetism at room temperature. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.