Pandurangan Anandan

Thiru Kolanjiappar Government Arts College, Vridhachalam · Physics

Pure and neodymium (Nd) substituted yttrium oxide nanoparticles were synthesized by the co-precipitation technique. The synthesized materials were annealed at 350°C, 500° C, 750° C and 1000° C using a muffle furnace at an open atmosphere. X-ray diffraction patterns, FTIR spectra and XPS spectra were recorded to study the structural variations. The...

Graphene has been reduced from graphene oxide, and it has been used to prepare the Yb2O3–graphene nanocomposites. Nanocomposites have been prepared by adding graphene with ytterbium oxide in 1, 3 and 5 weight percentage and named as Yb2O3G1, Yb2O3G3 and Yb2O3G5, respectively. Powder X-ray diffraction patterns have been obtained to study the structu...

In this study, boron carbide (B4C) and silicon carbide (SiC) nanoparticle reinforced aluminum matrix composites (AMC) were fabricated by stir cast method. The morphology of the SiC and B4C nanoparticles are analysed by scanning electron microscope (SEM). The Electron probe microanalysis and energy dispersive spectroscopic analysis were employed to...

Growth of bulk organic NLO crystals is a stupendous task in the field of crystal growth because of its remarkable properties such as better NLO efficiency and rapid response with light due to presence of delocalized electrons than inorganic materials, which could be implemented in the field of photonics. Attempts were made in growing bulk single cr...

Zinc oxide (ZnO) is one of the promising high temperature thermoelectric materials. However, its figure of merit (ZT) is relatively low compared to other oxide thermoelectric materials which limits its applications. Nanostructuring and alloying the material are the effective ways to improve the ZT of a material. In the present work, Zn1-xCoxO nanoc...

Polymeric composites are structures reinforced with particles, fiber and whiskers. In this study, as a unique attempt GFRP composites are selectively reinforced with Ni–Ti shape memory alloy (positioned at a section below the neutral axis) for enhancing the flexure resistance. Under static loading condition, up to 4 wt% of shape memory alloy reinfo...

Mg, Co doped and (Mg, Co) co-doped CdS thin films were prepared using chemical spray pyrolysis method. It is observed from the X-ray diffraction study that the deposited film exhibit cubic phase of CdS with preferred orientation along the (111) plane and incorporation of Mg and Co has been confirmed form energy dispersive analysis and XPS analysis...

CdS thin films doped and co-doped with Fe and Mn were prepared by spray pyrolysis technique and the films were portrayed by X-ray diffraction, laser Raman, XPS, FESEM with EDAX, UV–Vis, PL, and VSM analyses. The structural parameters were identified and the crystalline nature of the films was confirmed by X-ray diffraction patterns. The different o...

The photocatalytic properties of CeO2, Gd:CeO2 and Sm:CeO2 nanocrystals have been investigated under natural sunlight. The structural and morphological analyses of the synthesized samples were carried out by X-ray powder diffraction, field emission scanning electron microscopy and high-resolution transmission electron microscopy. The UV–Vis absorpt...

The high thermal conductivity of ZnO, especially at elevated temperatures, leads to low thermoelectric performance by materials. Nanostructuring the materials is an efficient method for improving their performance. In the present study, we synthesized Zn1–xAlxO nanocrystals with various values for x ranging from 0.05 to 0.2 in the precursor solutio...

Cadmium Sulphide (CdS) thin films have been coated on glass substrate at 400°C by spray pyrolysis (SP) technique using different precursor concentration (0.025M, 0.05M,0.1M,0.15M and 0.2M). CdS thin films were characterized by various techniques such as X-ray diffraction, SEM and optical studies. X-ray diffraction measurements show that CdS thin fi...

Cadmium sulphide nanoparticles were prepared by microwave assisted method using cadmium acetate as cadmium source and sodium sulphide as sulphur source. The prepared sample is characterized by XRD, FTIR, FESEM, UV-Vis spectroscopy and VSM. X-ray diffraction shows the CdS in cubic phase. FESEM image reveals particle like structure. From the FTIR spe...

Pure, Barium and Nickel doped cadmium sulphide (CdS) thin films have been coated on glass substrates at 400 °C by spray pyrolysis technique. The prepared CdS and doped CdS thin films were analysed by various measurements such as X-ray diffraction (XRD), SEM, optical and Vibrating Sample Magnetometer (VSM). X-ray diffraction measurements show that t...

The effect of sintering temperature and Ti:Zn ratio of precursor solutions on the structural, morphological and thermoelectric properties of Zinc titanate (TZO) nanocrystals have been investigated. TZO nanocrystals were synthesized by changing the molar ratio of precursors of Zn and Ti sources by sol-gel method. The synthesized materials were sinte...

Good quality single crystals of sodium acid phthalate (NaAP) were grown by slow evaporation technique. Single crystal X-ray diffraction study of the grown crystal reveals that the crystal belongs to orthorhombic system with space group B2ab. Fourier transform infrared spectrum confirms the presence of the functional groups of the grown material. In...

Benzophenone derivatives are promising material for various optical applications. In the present work, bulk crystals of a novel benzophenone derivative, 2-chloro 5-nitro benzophenone (2C5NBP) were grown by solution growth. The growth process was discussed based on solute-solvent interaction in two different growth media. The crystal structure of th...

Yittrium oxide (Y2O3)-reduced graphene oxide (rGO) nanocomposite was prepared by a low temperature solution process by mixing different weight ratios of chemically derived rGO and Y2O3. The structural properties of nanocomposite materials have been analyzed by x-ray diffraction. Laser Raman spectroscopic study further confirmed the formation of the...

Plain glass fibre-reinforced polymeric (GFRP) laminates and GFRP reinforced with randomly oriented short strips of shape memory alloy (SMA) were prepared by hand lay-up method. The SMA strip reinforcement was placed at 0.75 × thickness of the laminate with weight fractions of 2, 4 and 6%. The specimens were exposed to drop weight impact test and th...

The amino acid based semiorganic nonlinear optical family single crystal of L- Leucinium perchlorate (LLPCl) belongs amino acid family was grown by solvent evaporation method at ambient temperature. Good optical quality single crystals up to a size of 6mm x 5mm x 3mm are obtained. The single crystal XRD analysis shows the grown crystals has monocli...

An L-leucine hydriodide semiorganic crystal has been synthesized and grown by a slow evaporation technique. The lattice parameters of the grown crystal have been confirmed using single-crystal x-ray diffractometry. Various functional groups present in the crystal were identified by Fourier transform infrared (FTIR spectral) assessment. The optical...

Cobalt-doped iron oxide nanoparticles were prepared by solution combustion technique. The structural and magnetic properties of the prepared samples were also investigated. The average crystallite size of cobalt ferrite (CoFe2 O4) magnetic nanoparticle was calculated using Scherrer equation, and it was found to be 16±5 nm. The particle size was mea...

Graphene - Ceria (CeO2G ) nanocomposites have been prepared by the low temperature solution process with different weight percentage of graphene and its electrochemical properties have been investigated. Structural properties of the nanocomposites were studied by X-ray diffraction, Raman and FTIR spectral analyses. FE-SEM and HRTEM images shows the...

Plain GFRP laminates and stainless steel (SS) wire reinforced GFRP laminates were prepared by hand layup method. The composite specimen reinforced with SS wires placed at various pitch distances was fabricated, and drop-weight impact tests were conducted with velocities of 2.80, 3.13 and 3.43 m/s. The impact damage area was evaluated by using light...

Bismuth telluride (Bi2Te3) nanocrystals were synthesized using a wet chemical method, and 1 mm thick pellets of nanocrystals with a 10 mm diameter were made using a high pressure and high temperature sintering (HPHTS) process. The nanostructures were tailored using the sintering process, and the impact of the sintering temperature on the morphologi...

l-Lysine 4-nitrophenolate monohydrate (LLPNP) has been synthesized and grown by solution growth method at room temperature using deionised water as a solvent. The crystal structure of the materials was solved by single crystal X-ray diffraction analysis and it was found that the material has orthorhombic system. The crystallinity of the grown cryst...

Using slow evaporation solution growth technique, single crystal of Lithium para nitro phenolate (LPNP) has been grown from the equimolar mixture of para-nitro phenol and lithium hydroxide mono hydrate. Structural analyses were carried out by powder x-ray diffratcion method, FTIR and NMR methods to confirm the grown crystals. Thermal stability of t...

Plain GFRP, copper wire embedded GFRP and SMA short fibres included copper wires embedded GFRP laminates have been prepared by hand lay-up method. The mechanical properties like flexural and tensile strength were investigated. To study the impact properties of the laminates an experimental set up was designed and the impact strength of the laminate...

Using slow evaporation solution growth technique, single crystals of L-histidine-4-nitro phenolate has been grown from the solution. Structural analyses were carried out by powder x-ray diffraction, FT-Raman, Fourier Transform Infrared and Nuclear Magnetic Resonance spectral methods to conform the grown crystals. Thermal stability of the grown cry...

Semiorganic single crystals of l-histidine and l-histidine hydrochloride monohydrate have been obtained in a single solution prepared from the mixture of l-histidine and hydrochloric acid in 1:2 M ratio. Growth aspects of the single crystals have been discussed along with characterization studies. Crystal system and lattice parameters have been ide...

Single crystals of pure and potassium halides additive mixed L-arginine phosphate monohydrate have been grown with good optical quality by slow temperature reduction method. Microbial growth aspects and coloration have been studied on the growth solutions. In addition to that the structural properties have been studied by powder X-ray diffraction m...

Melt growth of benzophenone was in-situ observed under various cooling rate and temperature gradient. The melt growth experiments were performed for various cooling rate of melt and various temperature gradients. The movement of growth interface with time was measured for various growth faces such as (001), (101) and (011) and the growth rates of t...

The solubility and growth aspects of 4-aminobenzophenone (4-ABP) was investigated with an intention to grow bulk and good quality crystal. The solubility of 4-ABP in various organic solvents such as ethyl acetate, ethanol and O-xylene were studied. From the investigation, it was realized that the 4-ABP material has highest solubility in ethyl a...

Semiorganic single crystals of l-histidine and l-histidine hydrochloride monohydrate have been obtained in a single solution prepared from the mixture of l-histidine and hydrochloric acid in 1:2M ratio. Growth aspects of the single crystals have been discussed along with characterization studies. Crystal system and lattice parameters have been iden...

Zn1-xMgxO nanocrystals with various compositions (x=0-0.1) were synthesised by sol-gel process using tri ethanol amine (TEA) as a capping agent. The structural properties of the prepared materials were studied by X-ray diffraction analysis. Un-agglomerated nanocrystals with spherical morphology were observed by scanning electron microscope (SEM). T...

There has been considerable interest in the synthesis of semi organic NLO materials recently with excellent second order optical nonlinearities. Perfect single crystals are essential for fair device performance. Single crystals of title compound were grown by slow evaporation method. The perfection of the grown crystal has been studied by the high...

Glass fiber reinforced polymeric (GFRP) composite laminates have been prepared by hand layup method. According to ASTM standard, the test specimens have been prepared to carry out the flexural bending tests. The specimens have been subjected to both cyclic impact load and cyclic gradual load with various frequencies prior to the flexural bending an...

Using slow evaporation solution growth technique, single crystal of Lithium para nitro phenolate (LPNP) has been grown from the equimolar mixture of para-nitro phenol and lithium hydroxide mono hydrate. Structural analyses were carried out by powder x-ray diffratcion method, FTIR and NMR methods to confirm the grown crystals. Thermal stability of t...

The focus of this research is to characterize a new material system composed of glass fiber woven cloth and H80 foam core which has potential in a wide variety of applications encompassing aerospace, military, offshore, power production another commercial industry. Sandwich panels have been developed with and without stitching reinforcement. The...

Nearly perfect single crystals of l-histidine hydrochloride monohydrate have been grown from the solution prepared from the mixture of l-histidine and hydrochloric acid using slow evaporation solution growth technique. Single crystal X-ray diffraction analysis, High resolution X-ray diffraction analysis, fourier transform infrared and FT-Raman anal...

Single crystals of semi-organic l-histidine hydrobromide have been grown by slow evaporation technique from a mixture of l-histidine and hydrobromic acid in aqueous solution at ambient temperature. From high-resolution X-ray diffraction analysis, the crystalline perfection of the grown crystal has been studied. Single crystal X-ray diffraction anal...

This text book has been prepared on the basis of the syllabus prescribed by Anna University, Chennai for first semester of B.E./B.Tech. Degree courses. This book has been designed as a self-contained, comprehensive class room text. Throughout this book the subject mater has been explained in a simple manner and the topics have been treated in a sys...

Intra and intermolecular interactions between the components in the mixture of anisole and isobutanol and their concentration and temperature dependence have been reported using dielectric relaxation and viscometric studies. Permittivity and dielectric loss of the samples are determined by using microwave bench and they are used to calculate the re...

Single crystals of l-tyrosine bromide (LTB) have been grown by slow evaporation method from different solutions prepared with different normality of the solvent at ambient temperature. It has been observed that the growth rate along the crystallographic axes is considerably changed for different normality of solvent and remarkable morphological cha...

This text book has been prepared on the basis of the syllabus prescribed by Anna University, Chennai for Second semester of B.E./B.Tech. Degree courses. This book has been designed as a self-contained, comprehensive class room text. Throughout this book the subject mater has been explained in a simple manner and the topics have been treated in a sy...

l-arginine fluoride (LAF) is one of the potential semi-organic materials for nonlinear optical applications. In the present study, synthesis, material purification and crystal growth of LAF have been carried out. Since the material has high solubility in water, the growth parameters have been optimized for the growth of good-quality crystals. X-ray...