A5082453704- Nonlinear Optical Materials Research
- Crystallization and Solubility Studies
- Photorefractive and Nonlinear Optics
- Crystallography and molecular interactions
- Chalcogenide Semiconductor Thin Films
- Solid-state spectroscopy and crystallography
- Luminescence Properties of Advanced Materials
- X-ray Diffraction in Crystallography
- Nonlinear Optical Materials Studies
- Liquid Crystal Research Advancements
- Crystal structures of chemical compounds
- Copper-based nanomaterials and applications
- Air Quality and Health Impacts
- Crystal Structures and Properties
- Solid State Laser Technologies
- Quantum Dots Synthesis And Properties
- Photonic and Optical Devices
- Luminescence and Fluorescent Materials
- Advanced Photocatalysis Techniques
- Atmospheric chemistry and aerosols
- Air Quality Monitoring and Forecasting
- ZnO doping and properties
- Acoustic Wave Resonator Technologies
- Optical and Acousto-Optic Technologies
- Gas Sensing Nanomaterials and Sensors
Council of Scientific and Industrial Research
2016-2025
Academy of Scientific and Innovative Research
2015-2025
CSIR National Physical Laboratory of India
2006-2022
National Physical Laboratory
2008-2012
Vellore Institute of Technology University
2007
Indira Gandhi Centre for Atomic Research
2007
Anna University, Chennai
2002-2006
Graphene-based nanocomposites have proven to be very promising materials for gas sensing applications. In this paper, we present a general approach the preparation of graphene–WO3 nanocomposites. Graphene–WO3 nanocomposite thin-layer sensors were prepared by drop coating dispersed solution onto alumina substrate. These used detection NO2 first time. TEM micrographs revealed that WO3 nanoparticles well distributed on graphene nanosheets. Three different compositions (0.2, 0.5 and 0.1 wt%)...
A review on graphene oxide (GO)–TiO 2 nanocomposites with emphasis the role of GO as a co-catalyst and photocatalyst, providing synergistic effect well multidisciplinary photocatalytic activities in fields energy environment.
Nowadays more attention has been paid to the growth of organic nonlinear optical single crystals due their high efficiency and fairly good damage threshold comparable that inorganic counterparts. The benzimidazole (BMZ) grown by slow evaporation solution technique (SEST) vertical Bridgman (VBT) were characterized, results have compared. Characterization made high-resolution X-ray diffractometry (HRXRD), Fourier transform infrared (FTIR), laser threshold, microhardness, second-harmonic...
Manganese-doped sodium zinc phosphate (NaZnPO4:Mn) phosphor with exceptional features having ultra-violet (UV) to visible absorption (300–470 nm), yellow-green (∼543 nm) broad-band photoluminescence (PL), and appreciable color co-ordinates (x = 0.39, y 0.58) is reported. It has a crystal structure consisting of discrete PO4 tetrahedra linked by ZnO4 NaO4 distorted tetrahedral such that three tetrahedra, one each kind, share corner. The presence UV sensitive Zn-O-Zn bonds their efficient...
A single crystal of L-prolinium tartrate (LPT), which is an organic non linear optical material, was successfully synthesized and grown using a slow evaporation solution growth technique (SEST). The structure lattice parameters the were confirmed by powder X-ray diffraction it found that belongs to monoclinic system with β = 100.380 noncentrosymmetric space group. presence strain in ingot calculated from measurements. crystalline perfection examined high resolution diffractometry, revealed...
Recent trends focuses on the usage of nonlinear optical materials owing to their increasing demand in frontier areas communication and switching applications. In present work single crystal L-threoninium picrate, an excellent material for applications was grown using conventional slow evaporation solution technique meet photonics industry. The lattice parameters were analysed by powder X-ray diffraction, it found that crystallised monoclinic system with space group P21. strain calculated...
Pure and Zn-doped (1 mol%) LiNbO3 single crystals have been grown by the Czochralski technique. From powder X-ray diffraction analysis, crystal structure lattice strains evaluated. The crystalline perfection analysis high resolution revealed that pure is free from structural grain boundaries contains predominantly vacancy defects whereas doped low angle boundaries. Raman spectral studies indicate no variation in vibrations with slight changes peak width intensity. Zn doping leads to an...
We report on the growth of N-benzyl-2-methyl-4-nitroaniline (BNA) crystals by a solution method using certain polar protic and aprotic solvents (single or mixed). It was observed that morphology BNA could be influenced used was, with exceptions, predominant along crystallographic b axis. Attempts to grow large from these showed majority solvent molecules tended get adsorbed preferentially +c and/or −c axes/axis. The bulk surface qualities grown were employed results THz measurements obtained...
Nonlinear optical (NLO) single crystals with high quality are the pillars for development of new devices that fulfil demands society. Nowadays, NLO very attractive photonic applications particularly terahertz (THz) photonics. The reason their popularity is these can produce powerful and ultra wideband THz waves due to nonlinear susceptibility. In this review paper, we deal challenges progresses in evolution wave generation detection. Here, crystal growth how by which method grown. We...
In order to satisfy present day technological requirements, one has search the new organic nonlinear optical (NLO) materials with good efficiency. this article, title compound (4-dimethylamino-N-methyl-4-stilbazolium tosylate (DAST)) belongs class of NLO materials, and it is highest among all known single crystals. study, we have reported synthesis, solubility, metastable zone width, induction period DAST crystal. The crystal been grown by slope nucleation technique optimizing growth...
Congruent lithium niobate single crystals with a Ru:Mg co-dopant have been successfully grown using the Czochralski technique from melt containing 0.02 mol % Ru Mg of two varied concentrations (4.0 and 6.0 %). The effects co-doping on crystalline quality were determined by high-resolution X-ray diffractometry, which confirmed that is good dopants are statistically distributed in crystal. Raman scattering analysis shows no change lattice vibration except slight peak width intensity due to...
The semi-organic non linear optical single crystal of L-proline cadmium chloride monohydrate was successfully synthesized and the grown by a slow evaporation solution growth technique, using double distilled water as solvent. lattice dimensions were examined powder X-ray diffraction it found to belong orthorhombic system with noncentrosymmetric space group. Its crystallinity assessed high resolution method its structural imperfections recorded topography. presence functional groups...