Effect of Annealing Temperature on Structural and Optical Properties of Dip and Spin coated ZnO Thin Films
Publication date: 2015 Source:Procedia Materials Science, Volume 10 Author(s): B.W. Shivaraj, H.N. Narasimha Murthy, M. Krishna, B.S. Satyanarayana This paper reports the influence of annealing temperature on crystalline size, film roughness, surface morphology and photoluminescence properties of ZnO thin films prepared by dip and spin coating techniques. Thin films were annealed at 400°C and 500°C for one hour each and their structural properties were studied using XRD, AFM and SEM. The coatings were characterized for photoluminescence using UV-visible Spectrometer. The films produced by both the methods con...
Source: Procedia Materials Science - August 8, 2015 Category: Materials Science Source Type: research
Investigations on Physical Properties of Nanostructured Cr Doped CdO Thin Films for Optoelectronic Applications
Publication date: 2015 Source:Procedia Materials Science, Volume 10 Author(s): B. Hymavathi, B. Rajesh Kumar, T. Subba Rao Cr doped CdO thin films were deposited on glass substrates by DC reactive magnetron sputtering method by varying oxygen flow rates from 1 to 4sccm. XRD spectra shows that the films exhibit a simple cubic crystal structure with preferred orientation along (111) direction. FESEM images of Cr doped CdO thin films exhibits columnar structure and the grain width decreases with the increase of oxygen flow rate. Atomic force microscopy was used to examine the surface topography of the films. The ave...
Source: Procedia Materials Science - August 8, 2015 Category: Materials Science Source Type: research
Effect of Precursor Concentration on Structural and Morphological Properties of Iron Pyrite Thin Films
Publication date: 2015 Source:Procedia Materials Science, Volume 10 Author(s): A. Vedavathi, Y. Munikrishna Reddy, K.T. Ramakrishna Reddy The cubic FeS2 (Pyrite) films are prepared by chemical bath deposition method (CBD) at different iron ion precursor concentrations that varying from 2.0M to 0.5M. X-ray diffractograms revealed that the presence of (110) plane, corresponding to marcasite structure, and (106) and (304) planes, corresponding to FeS (Triolite) phase are observed along with the pure pyrite phase (200) at higher concentrations of iron. The films deposited at 1.0M concentration has strong (200) and (0...
Source: Procedia Materials Science - August 8, 2015 Category: Materials Science Source Type: research
Parametric Study of Sol Gel Technique for Fabricating ZnO Thin Films
Publication date: 2015 Source:Procedia Materials Science, Volume 10 Author(s): Akshay Chavan, B.W. Shivaraj, H. N. Narasimha Murthy, Vivek A, Vijaya Holla, Sushanth Shandilya, M. Krishna, B.S. Satyanarayana Zinc Oxide (ZnO) thin films were prepared by sol gel method. Zinc acetate dehydrate, Methanol and Diethanolamine were used as a starting material, solvent and stabilizer respectively. The influence of aging time (18, 24 and 48hours), annealing temperature (300, 400 and 500°C) and spinning speed (1500, 2500 and 3500rpm) on crystal size and surface roughness of the thin films was investigated using L9...
Source: Procedia Materials Science - August 8, 2015 Category: Materials Science Source Type: research
Component Replication Using 3D Printing Technology
Publication date: 2015 Source:Procedia Materials Science, Volume 10 Author(s): B. Satyanarayana, Kode Jaya Prakash In our daily life, the safety plays a vital role to safeguard many important things, which include money, gold, documents, etc. The most common form of security is the age old lock and key system. The diversity that exists in the world today among peoples professions raises the need for multiple duplicate keys. 3D printing, a rapidly growing innovative methodology of Additive Manufacturing Technology, allows the mass production of required profiles in a fast and cost-effective manner. MakerBot Replicat...
Source: Procedia Materials Science - August 8, 2015 Category: Materials Science Source Type: research
Enhancing the Performance of MEMS Piezoresistive Pressure Sensor Using Germanium Nanowire
Publication date: 2015 Source:Procedia Materials Science, Volume 10 Author(s): S. Maflin Shaby, M.S. Godwin Premi, Betty Martin Microelectromechanical systems (MEMS) have gained tremendous interest among researchers because of rapid development and wide variety of applications. The microsensors are the upcoming field that demand high sensitive devices which respond to the environmental changes. The paper describes the fabrication, designing and the performance analysis of a germanium material as a Piezoresistive MEMS pressure sensor. This pressure sensor uses double polysilicon germanium nanowires to increase the...
Source: Procedia Materials Science - August 8, 2015 Category: Materials Science Source Type: research
Influence of Thermal and Magnetic Field on Vibration of Double Walled Carbon Nanotubes Using Nonlocal Timoshenko Beam Theory
Publication date: 2015 Source:Procedia Materials Science, Volume 10 Author(s): P. Ponnusamy, A. Amuthalakshmi In this paper, the influence of thermal and magnetic field on transverse vibration of double walled carbon nanotubes are investigated using nonlocal Timoshenko beam theory. The governing equation of motion with small scale effects are formulated by considering thermal and Lorentz magnetic force. The dispersion relation is derived for carbon nanotubes with simply supported ends and the numerical simulations are done using MATLAB. Dispersion curves are drawn for both double and single walled carbon nanotubes ...
Source: Procedia Materials Science - August 8, 2015 Category: Materials Science Source Type: research
Experimental Investigation of Jute FiberReinforcedNano Clay Composite
Publication date: 2015 Source:Procedia Materials Science, Volume 10 Author(s): K. Deepak, S.V. Prabhakar Vattikuti, B. Venkatesh The effect of addition of nano clay and water absorption on jute fibreshas been studied. Although glass and other synthetic fibre-reinforced plastics possess high specific strength, their fields of application are very limited because of the inherent higher cost of production. To overcome this limitation, an investigation has been carried out to make use of jute, a natural fibre which is abundantly available at lower cost. In the present work, a new composite is developed in which jutef...
Source: Procedia Materials Science - August 8, 2015 Category: Materials Science Source Type: research
Effect of Blast Furnace Slag on Mechanical Properties of Glass Fiber Polymer Composites
Publication date: 2015 Source:Procedia Materials Science, Volume 10 Author(s): A.V. Pradeep The use of polymer fibre reinforced Composite materials is finding applications day by day in engineering fields such as aero-space, automotive, aircrafts constructions, etc. Glass fibre polymer composites are reinforced with granulated blast furnace slag (GBFS) ball milled to size of 5nm in different weight fractions, i.e. (0%, 5%, 10% and 15%) and fabricated by using hand lay-up technique. These fabricated slabs are cut into required dimensions and the tests for mechanical properties like Tension test, Compression test, Flex...
Source: Procedia Materials Science - August 8, 2015 Category: Materials Science Source Type: research
Optimizing The Machining Parameters For Minimum Surface Roughness In Turning Al/6% SiC/6%RHA Hybrid Composites
The objective of this work is to investigate the effect of the controllable variables like spindle speed, feed and depth of cut on surface roughness while turning the hybrid composite. Taguchi's L9, orthogonal arrays under different combinations are used for experimentation. The influence of the parameters is also evaluated using signal to noise (S/N) ratio analysis. Optimum parameters which give minimum surface roughness are obtained. S/N plot is drawn and the results are validated using analysis of variance (ANOVA) and the percentage of contribution of each parameter is determined. The scanning electron microscope was us...
Source: Procedia Materials Science - August 8, 2015 Category: Materials Science Source Type: research
Hardness and Wear Resistance of ZrO2 Nano Particle Reinforced Al Nanocomposites Produced by Powder Metallurgy
Publication date: 2015 Source:Procedia Materials Science, Volume 10 Author(s): M. Ramachandra, A. Abhishek, P. Siddeshwar, V. Bharathi Nano particle reinforced Aluminium Nanocomposites are produced using Zirconium dioxide (n-ZrO2). Nano particles produced by solution combustion method. Urea is used as fuel and then reinforcing into Aluminium matrix in different percentages by weight using the powder metallurgy technique. The specimens prepared are tested for their hardness and microstructure. The above mentioned properties were chosen due to the reinforcement added (n-ZrO2) which is known to have good toughness...
Source: Procedia Materials Science - August 8, 2015 Category: Materials Science Source Type: research
Synthesis, Characterization and Electrical Properties of a Composite of Topological Insulating Material: Bi2Te3-PANI
Publication date: 2015 Source:Procedia Materials Science, Volume 10 Author(s): R.R. Urkude, P.T. Patil, S.B. Kondawar, U.A. Palikundwar In the present work, we carried out a systematic study of structure, UV-Vis Spectra and surface conductivity of pure Bi2Te3, pure Polyaniline (PANI) and Bi2Te3 (5%)-PANI (95%) composite. Bi2Te3 was synthesized by a method similar to solvothermal method, whereas, pure PANI and Bi2Te3-PANI composite were synthesized by a chemical oxidative method. The materials were structurally characterized and the electrical properties were investigated in the temperature range from room tempe...
Source: Procedia Materials Science - August 8, 2015 Category: Materials Science Source Type: research
Development of Electrospun Polyaniline/ZnO Composite Nanofibers for LPG Sensing
Publication date: 2015 Source:Procedia Materials Science, Volume 10 Author(s): Pallavi T. Patil, Rajshri S. Anwane, Subhash B. Kondawar In this paper we report the highly sensitive at low temperature and low concentration of liquefied petroleum gas (LPG) sensor based on D-Camphor-10-Sulphonic acid (CSA) doped Polyaniline/Polyethylene Oxide (PANI/PEO) and PANI/ZnO/PEO nanofibers fabricated by electrospinning technique. Nano-sized particles of zinc oxide (ZnO) were synthesized using sol-gel method. The emeraldine base form of polyaniline (PANI) and PANI/ZnO synthesized by chemical oxidative polymerization were trea...
Source: Procedia Materials Science - August 8, 2015 Category: Materials Science Source Type: research
Electrospun Nanofibers of Conducting Polyaniline/Al-SnO2 Composites for Hydrogen Sensing Applications
Publication date: 2015 Source:Procedia Materials Science, Volume 10 Author(s): Hemlata J. Sharma, Dipti V. Jamkar, Subhash B. Kondawar In this paper, we report the synthesis and characterization of composites of polyaniline and aluminum doped tin oxide (Al-SnO2/PANI) nanofibers for hydrogen gas sensing application. Al-SnO2/PANI composite nanofibers have been fabricated via electrospinning technique and subsequent calcination procedure. The as-prepared Al-SnO2/PANI composite nanofibers were investigated for structural characterizations by means of SEM, FTIR, UV-VIS and XRD. SEM revealed the nanofibers with the dia...
Source: Procedia Materials Science - August 8, 2015 Category: Materials Science Source Type: research
Polypyrrole/Carbon Nanotubes/Lactate Oxidase Nanobiocomposite Film based Modified Stainless Steel Electrode Lactate biosensor
Publication date: 2015 Source:Procedia Materials Science, Volume 10 Author(s): Bhavna H. Meshram, Ritu P. Mahore, Priyanka D. Virutkar, Subhash B. Kondawar Highly sensitive electrochemical lactate biosensor was constructed by one-step preparation route of amperometric enzyme electrode based on carbon nanotubes (CNT) and biocatalyst within an electropolymerized polypyrrole (PPy) film electrodeposited on stainless steel electrode. The nanobiocomposite film was electrochemically synthesized by electro-oxidation of pyrrole in a neutral pH solution containing appropriate amounts of lactate oxidase (LOD) and function...
Source: Procedia Materials Science - August 8, 2015 Category: Materials Science Source Type: research
