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.

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VIT University

We report on the deposition of Cu2O thin films with different experimental parameters by using direct current (DC) magnetron sputtering. Films deposition was controlled by temperature, oxygen flow rate and deposition time. The deposited Cu2O thin films were characterized by studying crystallographic structure with XRD, and surface morphology by field-emission scanning electron microscopy (FE-SEM). These experimental results revealed that sputtering parameters such as substrate temperature and the O2 flow rate are the important factor that strongly influencing the formation of high-quality Cu2O thin films. Our study demonstrated that the optimized high-quality Cu2O thin films can be utilized for many technological applications such as solar cells, gas sensing and fuel cells. © OSA 2015.

Department of Manufacturing Engineering

School of Mechanical Engineering

Vellore Campus

VIT Unitversity

Physics

School of Advanced Sciences

Chennai Campus

Frontiers in Optics 2015

The effect of oxygen partial pressures on the formation of cuprous oxide thin films for optoelectronic applications

Department of Mathematics

Fulltext

International Journal on Cryptography and Information Security

Data Encryption Using Bio Molecular Information

Metal matrix composites, in particular, Aluminium Hybrid Composites are gaining increasing attention for applications in air and land because of their superior strength to weight ratio, density and high temperature resistance. This paper presents the results of experimental investigation on machinability properties of Silicon Carbide and Boron Carbide reinforced Aluminium 356 hybrid metal matrix composite. The composites were prepared by varying weight fraction of SiC (5%, 10%, 15%) and keeping the Boron Carbide weight fraction (5%) is constant using modified stir casting technique. Four layer coated carbide insert (TiN. Al2O3, TICN, TiN) designated as CNMG 120408 FR was used to machine the fabricated composites. Face centered central composite experimental design coupled with Response Surface Methodology (RSM) was used for modeling that the process output characteristics that influence by weight fraction, speed, feed rate, cutting depth. The experimental results imply that surface Roughness criteria are found to increase with increase of feed. At 0.206.mm/rev feed, the Surface Roughness deteriorated rapidly. Roughness decreases at higher cutting speed during machining. With the help of Mintab software, RSM showed an accuracy of 95%. Moreover, a good agreement was observed between the experimental and the predicted values of surface roughness and cutting force. Optimal cutting condition which leading to the minimum surface roughness and cutting force were highlighted. © 2014 Published by Elsevier Ltd.

Department of Design and Automation

Procedia Engineering

Study of Cutting force and Surface Roughness in machining of Al alloy Hybrid Composite and Optimized using Response Surface Methodology

Silver nanoparticles are known to have inhibitory antimicrobial properties. In this letter, we report the synthesis of silver nanoparticles by using biocompatible, water soluble polymer through polyol method. Optical absorption spectrum of the prepared particles shows an absorption peak around 433 nm which is because of Surface Plasmon Resonance (SPR) of silver nanoparticles. Fourier transform infrared (FTIR) studies were done to identify the interaction of the nanoparticle and polymer. Transmission Electron Microscopic (TEM) studies confirm that the prepared particles are ~ 100 nm in size. Antifungal activity was studied through standard disk diffusion method. Studies show the prepared particles are potential candidates for the antifungal activity.