The use of natural fibers in making a variety of synthetic material has attracted attentions due to mainly two causes. 1. Making use of waste material into usable composites and 2. To tide over disposal of waste which otherwise causes degradation of environment. In the present study raw coir fiber was chemically treated with nitro compounds. It is a kind of chemical modification of fiber. Treated fiber was reinforced with epoxy polymer in the 1:1:1(resin: hardener: treated fiber). Dielectric estimation of the resulting composite was done with Wayne Kerr impedance analyzer in the temperature range of 30Oto 180OC at different frequencies. Systematic variation in properties was found from pure epoxy composite to fiber reinforced epoxy composite. XRD study reveals that composite is crystalline in nature. Change in morphology of the fiber was found when compared with untreated fiber, which is confirmed by Scanning Electron Microscopy. The objective of this study is to utilize the coir fiber, a waste product found in abundance in nature. If natural fibres could be used as reinforcement material in polymers, it may lead to new dimensions to research in the area of embedded materials. It might prove as an asset in electronic, automobile and engineering fields. It is lightweight; bio-degradability makes it a potential in new arena when India goes green.Keywords: coir, fiber, reinforcement, polymer

The present study shows some important effects of chemical treatment on the structure and morphology of coir fibre. The objective of the present study is to optimise overall properties of coir fibre so as to use coir fibre as a reinforcing agent in thermoplastic and thermosetting polymers. In the present study, coir fibre is treated with ferric nitrate salt. A thermal treatment has been done at temperature of 1000˚C by using annealing method. X-ray diffraction of the treated coir fibre reveals the crystalline nature of the fibre. Change in morphology has been found in coir fibre when subjected to scanning electron microscopy. Finally, the Fourier transform and infrared spectrographs show the presence of traces of iron oxide:fibre in the prepared composite.

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Metallic nanowires show great potential for applications in miniaturization of electronic devices due to their extraordinary mechanical strength and electrical properties. Experimental investigations of these properties are difficult due to their size and complications in performing experiments at such length scales. Computational techniques based on classical molecular dynamics simulations (using LAMMPS) provide an effective mean to understand the mechanical deformation behaviour of such nanowires with considerable accuracy and predictability. In the present investigation, we have discussed the deformation behaviour of Au nanowires due to tensile loading using classical molecular dynamics simulations (LAMMPS). The effect of strain rate and temperature on the yield strength of the nanowire has been studied in detail. The deformation mechanisms have also been discussed.

In this paper we present a theoretical study of the electron transport properties of Si nanowire and also the electron transport properties of nanowire doped with Al atoms by using Atomistix toolkit (ATK). The differences in the I-V curves obtained with each configuration and their technologic consequences are discussed in detail. ATK is a package which provides efficient calculations of materials transport properties and realistic device simulations to extract current-voltage and transfer characteristics. The simulation results were obtained using local density approximation based on density functional theory (DFT).