Special Issue

International Conference on Current Trends in Materials Science and Engineering 2019

Analysis of Photoresponse and Charge Transport Properties of Hydrothermally Synthesized ZnSe Nanoparticle Based Schottky Device
Authors : Arka Dey, Samit Kumar Ray

In the present study, ZnSe nanoparticles (NPs) have been successfully synthesized via a hydrothermal process. Sample characterization has been done using Powder X-ray diffraction, UV–Vis spectroscopy, and Field emission scanning electron microscopy. ZnSe NPs show significant optical absorption in the visible light range and the direct optical energy bandgap has been measured as 3.22 eV,... Read More

Microstructural Refinement for the Reduction of Casting Thickness in Ni-Zr-(Al) Eutectic Composites and Evaluation of the Cooling Rates
Authors : Anushree Dutta, Dyutiman Barman, Utkarsh Sinha, Jayanta Das

The variation of casting thickness and solute content may play a significant role to alter the microstructure, thus, mechanical, creep and other properties. Therefore, the present work aims on the microstructural modification in terms of the length scale of the constituent phases and microstructure homogeneity in differently cast rods (Ø=2 mm, 3mm, and 5 mm) and ingots of... Read More

Radiation Enhancement of Superconducting Critical Temperature of Fe-based HTSCs
Authors : Kriti R Sahu, Ashish K Mishra, D. Sanyal, Thomas Wolf, A. Banerjee, V. Ganesan, Udayan De

High Temperature Superconductivity (HTSC) with Superconducting Critical Temperature (Tc) up to 56 K in Fe Pnictides/Chalcogenide compounds baffled the classical idea that magnetic ions like Fe destroy superconductivity. These Fe-superconductors appear to be better than Cu-oxide HTSCs for making superconducting wires, considering the easier fabricability for Fe-HTSCs, for magnet and other... Read More

Molecular Dynamics Simulation Studies on Melting of Silver Nano-Clusters
Authors : M. P. Samantaray, S.S. Sarangi

Metal nano-clusters (NCs) exhibit unique and interesting thermodynamic behaviour as compared to single molecule as well as bulk materials. Classical Molecular Dynamics (MD) simulations with Modified Embedded Atom Method (MEAM) model has been carried out in order to study the melting phenomena of Silver (Ag) NCs. Two NCs consisting of 108 and 1372 Ag atoms are chosen. The melting point temperature... Read More

Study on the Effect of 8 nm Size Multi Walled Carbon Nanotubes (MWCNT) on the Barrier Height of Malachite Green (MG) Dye Based Organic Device
Authors : Sudipta Sen, Nabin Baran Manik

In this paper, we have studied the effect of 8 nm sized multi walled carbon nanotubes (MWCNT) on the barrier height (Ï•_b) of ITO coated glass/Malachite Green (MG) dye /Aluminium (Al) based organic device. Presence of 8 nm MWCNT reduces the metal-organic interfacial barrier height as it enhances the charge separation and relaxation process. We have used ITO coated glass as front electrode and... Read More

Electrical Relaxation Studies of Chalcogenide xAg2S–(1-x) (0.5S–0.5Te) Glassy System
Authors : Swarupa Ojha, Madhab Roy, Anil Chamuah, Koyel Bhattacharya , Sanjib Bhattacharya

Electrical relaxation of xAg2S – (1-x) (0.5S – 0.5Te) chalcogenide glassy system has been studied in the frequency range from 42Hz to 5Mz and temperature range from 433K to 523K. Dielectric constant and dielectric loss exhibit frequency and temperature dependency. Attempts have been made to analyse dielectric relaxation data using Hunt’s Model. Activation energies estimated... Read More

A CAE-Based Methodology for Designing a Fuel Cell Stack for Electric Vehicle Applications
Authors : Sanketh Ramachandra, Anindya Deb, Purushothama Chippar

Battery powered electric vehicles which can be considered as affordable for a common buyer suffer from severe range limitation and have a substantial charging time which are preventing such vehicles from competing with or replacing current internal combustion engine-based vehicles. An electric motor-propelled vehicle powered by a hydrogen fuel cell for generating electricity appears to be the... Read More

Bioadsorbents as Green Solution to Remove Heavy Metals from Waste Water - Review
Authors : Kamalika Banerjee

The living world faces serious threat from the water pollution caused by heavy metal contamination in water. Specially, long term exposure to heavy metals has been found to lead to severe health hazards. Costly methods of removal of heavy metals from waste water may be replaced by cheap bio-adsorbents which are obtained from nature and are effective in removing heavy metals from waste water. ... Read More