52 research outputs found
Preliminary Synthesis of Calcium Silicates using Oil Palm Leaves and Eggshells.
A new synthetic procedure is described for the synthesis of calcium silicate derivatives, using natural resources such as eggshell (ES) for calcium and oil palm leaves (OPL) for silica, which do not require prepurification. The reaction is performed by directly converting two weight ratio of the precursors, ES:3OPL and ES:6OPL, to dried-powder form by heat treatment at 900 °C for two hours. The results demonstrate that the concentration of the precursors has an effect on the morphology and crystallinity of the calcium silicate derivatives, mainly Ca2SiO4 and CaSiO3. X-ray diffraction results reveal that the reaction product obtained using a 1:3 ratio is quite pure, and mainly consisted of calcium silicate in the form of Ca2SiO4. The CaSiO3 was also identified in ES:6OPL, together with a small amount of excess non-reacted crystalline silica. Furthermore, a scanning electron microscopy analysis shows that both reaction products have a coarse surface. Copyright © 2020 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Synthesis, microstructure and dielectric properties of Sb-doped multiferroic Bi0.8Ba0.2Fe1−xSb x
Photosynthetic microbes in nanobiotechnology Applications and perspectives
Photosynthetic microbes like brown algae, red algae, green-algae and blue-green algae (cyanobacteria) are utilized extensively for various commercial and industrial purposes. However, in recent time, their application has shifted to
nanotechnology. The synthesis of metal nanoparticles using algal resources is known as Phyconanotechnology. Due
to various advantages of the photosynthetic microbes such as presence of bioactive molecules, scalability, high metal uptake and cultivability, these microbes form ideal sources for nanoparticle synthesis. The green synthesis of
nanoparticles is a non-toxic and environment-friendly alternative compared to other hazardous chemical and physical
routes of synthesis. Several species of algae are explored for the fabrication of metal and metal oxide nanoparticles.
Various physical characterization techniques collectively contribute in defining the surface morphology of nanoparticles and the existing functional groups for bioreduction and stability. A wide range of nanostructured metals like gold, silver, copper, zinc, iron, platinum and palladium are fabricated using algae and cyanobacteria. Due to the unique properties of the phycogenic nanoparticles, biocompatibility and safety aspects, all of these metal nanoparticles have their applications in facets like infection control, diagnosis, drug delivery, biosensing and bioremediation. Herein, the uniqueness of the phycogenic nanoparticles along with their distinctive antibacterial, antifungal, antibiofilm, algaecidal, antiviral, anticancer, antioxidant, antidiabetic, dye degradation, metal removal and catalytic properties are featured. Lastly, this work highlights the various challenges and future perspectives for further exploration of the biogenicmetal nanoparticles for development of nanomedicine and environmental remediation in the coming
years
Diffusion induced columnar structure, high perpendicular anisotropy and low transformation temperature in thick FePt films
10.1016/j.tsf.2010.06.064Thin Solid Films518237053-7058THSF
Fabrication and magnetic properties of metallic nanowires via AAO templates
10.1016/j.jmmm.2009.03.074Journal of Magnetism and Magnetic Materials321182712-2716JMMM
Fabrication and magnetic properties of metal nanowires via AAO templates
10.1109/INEC.2008.45856782008 2nd IEEE International Nanoelectronics Conference, INEC 20081116-112
Synthesis and characterization of ferromagnetic nanowires using AAO templates
Surface Review and Letters151-291-96SRLE
A New THz Frequency Band Generation for Optical radio System of RFID Applications
AbstractWe propose a novel system that can be used to generate the new optical communication that have shown the optimize results with various RFID applications. Gaussian pulse with center wavelengths from 1,300nm are used, which this system is very simple for used. Whereas the suitable simulation parameters are input power, pulse width, ring radii are 5-12μm and the material refractive indices (κ) are 0.10-0.97. The potential applications carrier generation for a new THz RFID is 0.2 THz by micro-nano ring resonator device
The structure and magnetic properties of NiO with different sizes
10.1109/INEC.2008.45856632008 2nd IEEE International Nanoelectronics Conference, INEC 20081047-105
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