Editorial
Nidhi Chauhan; Sandra Afflerbach
Abstract
Advanced Materials Congress, AMC, is the flagship congress assembly organized by the International Association of Advanced Materials. This is one of the most prominent congress assemblies in the sphere of materials science and technology, started by IAAM in the year 2011 to provide a prestigious platform ...
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Advanced Materials Congress, AMC, is the flagship congress assembly organized by the International Association of Advanced Materials. This is one of the most prominent congress assemblies in the sphere of materials science and technology, started by IAAM in the year 2011 to provide a prestigious platform to the active and upcoming materials science researchers, scientists, professionals, and business giants where they could come together and discuss the latest trends and developments in the scientific world. Ever since then, AMC has stimulated intensive discussions and facilitated the advancement of materials to global excellence. Going through the year 2020, IAAM had already organized as many as 32 Advanced Materials Congresses, which were attended by more than 15,000 delegates from more than 100 countries with the participation of around 2500 leading organization from both academia and industry. Around 1000 thematic sessions on various topics of advanced materials have been organized during the past Advanced Materials congresses and their symposia. Stepping into this new decade, IAAM plans on taking the prestigious platform of AMC to all continents of the world in 2020. Moreover, the organization intends to focus these international assemblies on all different kinds of subject areas of advanced
Research Article
s. Suresh; v. Seetharaman; R. Mohan Kumar
Abstract
p-Toludinium fumarate (PTF) a potential organic single crystal was grown by slow evaporation solution growth technique. Single crystal X-ray diffraction study was used to compute the unit cell parameters. The nuclear magnetic resonance spectral study reveals the proton and carbon molecular structure ...
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p-Toludinium fumarate (PTF) a potential organic single crystal was grown by slow evaporation solution growth technique. Single crystal X-ray diffraction study was used to compute the unit cell parameters. The nuclear magnetic resonance spectral study reveals the proton and carbon molecular structure of PTF crystal. Optical band gap and the percentage of optical transmission were established by using UV-visible spectroscopy. Photoluminescence studies show that emission is independent of excitation wavelength. Dielectric constant (ε') and dielectric loss (tan δ) of PTF crystal were studied. The third order nonlinear refractive index (n2) and third order nonlinear absorption coefficient (β) were estimated by Z-scan technique.
Research Article
B. Valarmathi; R. Premanand; G. Vinitha; R. Mohan Kumar
Abstract
Organic materials have outstanding upturn striking high nonlinear optical properties. One such NLO material of good quality single crystal of protonated Piperazinium bis (Salicylate) (PSL) was synthesized by slow solvent evaporation solution growth technique. XRD studies analyzed that the PSL crystallize ...
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Organic materials have outstanding upturn striking high nonlinear optical properties. One such NLO material of good quality single crystal of protonated Piperazinium bis (Salicylate) (PSL) was synthesized by slow solvent evaporation solution growth technique. XRD studies analyzed that the PSL crystallize monoclinic system with space group P21/n. FTIR spectral analysis ascertained the frequencies of various functional groups present in PSL crystal. The optical transmittance and optical band gap were explored from the optical transmission phenomena of PSL crystal. PL studies revealed that prominent emission at 410 nm, when PSL was excited at 320 nm. The mechanically soft nature of the crystal was divulged by Vickers hardness measurement. The LDT value of PSL crystal was estimated as 2.65 GW/cm2. The third order NLO properties of PSL crystal was ascertained by Z-scan studies.
Research Article
v. Anandan; G. Manimaran; G. Uthra
Abstract
The conventional flood cooling method fails to minimize the heat generation in the cutting areas and make adverse effect on the environment during machining process. Hence CMQL (Cryogenic Minimum Quantity Lubrication) is used as coolant in this work, which gives lubrication and reduces the temperature ...
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The conventional flood cooling method fails to minimize the heat generation in the cutting areas and make adverse effect on the environment during machining process. Hence CMQL (Cryogenic Minimum Quantity Lubrication) is used as coolant in this work, which gives lubrication and reduces the temperature to greater extend and also it is environment friendly. The selection of cutting conditions and appropriate tools for efficient machining process is a challenging process, hence it is necessary to optimize the machining parameters. A modified TOPSIS method using Gower distance has been proposed in this paper for the optimization of Nimonic 80A alloy. The machining parameters such as Surface Roughness (Ra) and Temperature (T) under 3 different environments namely (i) dry, (ii) wet and (iii) cryogenic MQL with different feed rate & cutting speed are examined in the optimization of Nimonic 80A alloy. Optimized results confirm that environment and feed rate are dominant factors and the environment influence is about 84.6%, followed by feed rate at 10.1%. Cryogenic MQL has better effectiveness compared to conventional cooling. The modified TOPSIS method is found to be more effective in machining problems.
Research Article
k. Velavan; p. Palanisamy; E. Thirukkumaran
Abstract
The mechanical behavior of AMMC based reinforced hybrid composites with various volume fractions of Sic (3, 6, 9, 12, 15) and Gr (1, 2, 3, 4, 5) was studied. The Stir casting method was adapted for manufacturing the various samples. The analysis reveals the increase in strength and hardness of the samples ...
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The mechanical behavior of AMMC based reinforced hybrid composites with various volume fractions of Sic (3, 6, 9, 12, 15) and Gr (1, 2, 3, 4, 5) was studied. The Stir casting method was adapted for manufacturing the various samples. The analysis reveals the increase in strength and hardness of the samples with greater percentage compositions of reinforcements. The study was performed to analyze the micro structural properties of the composites based on the addition of reinforcements. The hardness, tensile strength and impact strength were analyzed. The addition of Sic and Gr proved to enhance density to an optimal range to improve the structural and mechanical property of the reinforced AMCs. The composite with enhanced mechanical property was identified and the test results were verified to establish the alignment of the composite with a wide range of industrial and automotive applications.
Research Article
B. Yamini; R. Nanthini
Abstract
This paper solely describes about novel aliphatic polymer prepared from polyethyleneglycol (PEG 400) moieties by melt poly condensation of 1, 4- cyclohexanediol and dodecanedioic acid. The structural elucidation of the polymer obtained, were thoroughly investigated by various techniques such as FTIR, ...
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This paper solely describes about novel aliphatic polymer prepared from polyethyleneglycol (PEG 400) moieties by melt poly condensation of 1, 4- cyclohexanediol and dodecanedioic acid. The structural elucidation of the polymer obtained, were thoroughly investigated by various techniques such as FTIR, NMR, DSC, TGA, XRD. The polycondensation reaction was carried out by the presence of Titanium (IV) isopropoxide as catalyst. We have also discussed about the biological properties like antioxidant and biocompatibility of the polymers with its non-toxic effect.
Research Article
B. Kalpana; R. Nanthini
Abstract
A novel random copolyester Poly(1,4-dithiane-2,5-diol Succinate – Co – 1,2-ethane diol Succinate) PDES containing sulphur atom was synthesised by direct melt polycondensation method using 1,4- dithiane-2,5-diol as a special monomer, succinic acid, and 1,3 ethane diol with Titanium tetra isopropoxide ...
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A novel random copolyester Poly(1,4-dithiane-2,5-diol Succinate – Co – 1,2-ethane diol Succinate) PDES containing sulphur atom was synthesised by direct melt polycondensation method using 1,4- dithiane-2,5-diol as a special monomer, succinic acid, and 1,3 ethane diol with Titanium tetra isopropoxide as catalyst. The wide range of application of the special monomer especially as biocontrol material and food additive led us to extend our area of research towards producing copolyester with cytotoxic activity. The various physical properties of the copolyester such as inherent viscosity, glass transition temperature, solubility and crystalline nature was investigated and studied in detail.The 1H-NMR and FT-IR was done to investigate the chemical properties of the PDES copolyester.In Vitro cytotoxicity against Normal (Vero cell line) and cancer (A549 Lung cancer cell line) by MTT Assay, Antioxidant activity by Dot-Blot/DPPH scavenging Assay and Antimicrobial by Well diffusion method studies proved that the synthesised copolyester have immense biological properties and could be used in biomedical application.
Research Article
M. Priya; k. Sathyamoorthy; p. Vinothkumar; Ro. Mu. Jauhar; p. Murali Manohar; A. Selvam
Abstract
The Mannitol single crystal was grown by slow evaporation technique and irradiated by gamma radiation. Single crystal XRD analysis showed that irradiation not changed the crystal system. The crystalline perfection of pure and irradiated Mannitol single crystal were studied by high resolution X-ray diffraction ...
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The Mannitol single crystal was grown by slow evaporation technique and irradiated by gamma radiation. Single crystal XRD analysis showed that irradiation not changed the crystal system. The crystalline perfection of pure and irradiated Mannitol single crystal were studied by high resolution X-ray diffraction analysis. The optical behaviour of pure and irradidated Mannitol was verified by the changes in the affected cut-off wavelength. The laser damage threshold was calculated for pure and irradiated Mannitol using laser source. The second harmonic generation of pure and gamma irradiated Mannitol were studied using Nd:YAG laser source and observed that SHG intensity decreases with increasing dose of gamma radiation.
Research Article
E. Selvakumar; A. Chandramohan
Abstract
A new organic SHG active salt 3-Nitroanilinium L-tartrate m-nitroaniline (MLM) was synthesized and optically good single crystals were grown by solvent evaporation solution growth method at room temperature. The structure of the crystal identified by single crystal XRD analyses and it belongs to monoclinic ...
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A new organic SHG active salt 3-Nitroanilinium L-tartrate m-nitroaniline (MLM) was synthesized and optically good single crystals were grown by solvent evaporation solution growth method at room temperature. The structure of the crystal identified by single crystal XRD analyses and it belongs to monoclinic crystal system with polar space group P21. The functional groups present in product have been confirmed from the FT-IR spectral study. The optical transmission spectrum was recorded to examine the optical property of the title crystal. The thermo gravimetric and differential thermal analyses were carried out simultaneously to study the thermal behavior of the title crystal. The relative second harmonic generation activity of the title crystal was confirmed by the modified Kurtz-Perry powder test and it was found that the title crystal has 0.5 times second harmonic generation output than that of KDP.
Research Article
c. Amirtha Kumar; R. Mohan Kumar
Abstract
Third order nonlinear optical semi-organic potassium hydrogen maleate single crystal was grown by Sangaranarayanan-Ramasamy (SR) method. The formation of the bonds in the crystal was confirmed by FTIR analysis. Thermal properties were analyzed, and found that the grown crystal is thermally stable up ...
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Third order nonlinear optical semi-organic potassium hydrogen maleate single crystal was grown by Sangaranarayanan-Ramasamy (SR) method. The formation of the bonds in the crystal was confirmed by FTIR analysis. Thermal properties were analyzed, and found that the grown crystal is thermally stable up to 196°C. The transparency (74%) was assessed from the UV-Vis studies. The photo-luminescence spectral study revealed yellow emission in the wavelength region 500-650nm. The surface laser damage threshold value of the grown crystal was measured by using Nd:YAG laser. Z-scan technique was employed to observe the third-order nonlinear optical property of the grown crystal.
