International Journal of Students' Research in Technology & Management <p>International Journal of Students' Research in Technology &amp; Management [eISSN 2321-2543] is a special journal of its kind in publishing the original research and review articles of early researchers of technology &amp; management domain.</p> en-US <p>Authors retain copyright for the published content.</p> (Dr Firdouse Khan) (Mr David Green) Sun, 16 Sep 2018 13:22:36 +0000 OJS 60 PROCESSING, DIELECTRIC, IMPEDANCE SPECTROSCOPY OF ELECTRONIC MATERIAL: (Pb0.92Ga0.08)(Zr0.48Ti0.52)0.98O3 <p><strong>Purpose of Study:</strong> The present work shows studies of some physical properties of a gallium (Ga) modified lead zirconate titanate (PbZrTi)O<sub>3</sub> with molar ratio Zr/Ti::48/52 (i.e., near morphotropic phase boundary (MPB)) having (Pb<sub>0.92</sub>Ga<sub>0.08</sub>)(Zr<sub>0.48</sub>Ti<sub>0.52</sub>)<sub>0.98</sub>O<sub>3</sub> (PGaZT-8) as a chemical composition.</p> <p><strong>Methodology:</strong> The material was fabricated employing high-temperature mixed oxide route.</p> <p><strong>Main Finding:</strong> X-ray diffraction spectra suggest a distorted perovskite structure having two phases (tetragonal and monoclinic phases) with the substitution of small amount (2 and 4 wt %) of Ga in Pb(ZrTi)O<sub>3 </sub>(PZT). However, with higher concentration of Ga (6 and 8 wt %) in PZT, the multiphase perovskite structure is converted into an orthorhombic system with few impurity phase of Ti<sub>3</sub>O<sub>5</sub>. Analysis of field emission scanning electron micrograph (FESEM) of 8 wt% Ga modified PZT (PGaZT-8) shows the uniform distribution but different dimension and shape of grains depicting high-density ceramic sample. In the dielectric studies no dielectric anomaly exists in the experimental temperature range (25-500<sup>o</sup>C) in PGaZT-8, which determines the substitution of 8 wt% Ga in PZT (in MPB region) is found responsible for the suppression or shift (towards higher temperature) of known ferroelectric phase transition of PZT. There is an enhancement of permittivity, loss factor and conductivity as Pb site of PZT is doped with Ga.</p> <p><strong>Applications of study:</strong> This study is useful for the determination of the characteristics of the prepared material as a base for device fabrication.</p> <p><strong>Novelty of the Study:</strong> It is a systematic study of correlation of structural properties with the physical properties. It helps to understand the relaxation and conduction mechanism of PGaZT-8 using impedance and modulus spectroscopy.</p> Sugato Hajra, Sushrisangita Sahoo, Pravat Kumar Rout, RNP Choudhary ##submission.copyrightStatement## Thu, 18 Oct 2018 06:03:53 +0000 INFLUENCE OF NANO Al2O3 TO IMPROVE THE YIELD OF DOUBLE SLOPE SOLAR STILL <p><strong>Purpose:</strong>The supply of pure fresh water is becoming a rising issue is many areas of the world. Clean water being a basic requirement is still unavailable to a large number of people. The fast development and growth in population and agriculture has helped to increase the need of clean water. The solar distillation is one of the most cost efficient ways to accomplish this.</p> <p><strong>Methodology:</strong>When water evaporates from the basin of the still, it leaves the various impurities behind resulting in clean palatable water. Solar stills have a comparatively low yield but can be used to provide safe water options to rural areas of the world. To increase the yield of the solar still nano Al2O3 fluid is used,which is prepared using a dispersant of Sodium Dodecyl Benzene Sulphonate (SDBS). The still is a double slope basin type solar still with black paint coating on the inside and external reflecting mirrors, to enhance the yield.</p> <p><strong>Main Findings:</strong>This project compares the efficiency and output of double slope solar still with and without the nanofluid. The single basin double slope solar still was fabricated using low cost durable materials and the 0.01 vol. % Al2O3 water based nanofluid was prepared. The results showed a positive outcome of a 15% increase in the rate of distillate collected with the use of nanofluids. The payback period was calculated to be less than 2 weeks without nanofluid and one week with the use of nanofluid.</p> <p><strong>Implications:</strong>The present study is useful for obtaining pure drinking water at remote locations in Sultanate of Oman where solar energy is abundance.</p> <p><strong>Novelty of Study:</strong> Nanofluids are used to enhance the distillation rate when compared to the conventional solar stills.</p> <p>&nbsp;</p> Rees Alexa Robert, Dinesh Keloth Kaithari, M. Mumtaz Mirza, Parimal Sharad Bhambare ##submission.copyrightStatement## Sun, 16 Sep 2018 00:00:00 +0000