5 articles for “Dielectric Permittivity”

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Research ArticleOpen accessIn the keywordsEnhanced Dielectric Properties of Polyaniline/Silver/Carbon Nanotubes NanocompositeS. M. Reda, Sheikha M. Al-GhannamCurrent researches had shown that the electrical conductivity of most polymers depend on the method of its preparation and type of fillers. This research therefore aimed at studying the electrical properties of polyaniline carbon nanotubes nanocomposite prepared by hand mixing and decoration methods. The effect of preparation method on electrical properties of polyaniline containing Carbon Nanotubes (CNTs) and silver nanoparticles … …Current Research in Nanotechnology, Vol. 4, Issue 1 · 13 Jan 2014 · 7,019 accessesView PDF Cite

Research ArticleOpen accessIn the abstractElectrical Studies of Carboxy Methycellulose-Chitosan Blend Biopolymer Doped Dodecyltrimethyl Ammonium Bromide Solid ElectrolytesNur Yasmin Abu Bakar, Nur Hafiza Mr. Muhamaruesa, Nur Ain Bashirah Aniskari, Mohd Ikmar Nizam Mohamad IsaIn this study, a polymer-blend system consist of Carboxy Methylcellulose (CMC)-Chitosan (CS) as blend biopolymer host and doped with various composition of Dodecyltrimethyl Ammonium Bromide (DTAB) were successfully prepared via solution casting techniques. The new system has been analyzed through Electrical Impedance Spectroscopy (EIS) from temperature 303 K until 393 K to determine the conductivity of biopolymer electrolytes in the … …American Journal of Applied Sciences, Vol. 12, Issue 1 · 5 Mar 2015 · 7,649 accessesView PDF Cite

Research ArticleOpen accessIn the abstractReflectivity of Reflectarrays Based on Dielectric SubstratesM. Y. Ismail, M. Inam, A. M.A. ZaidiProblem statement: Reflectarrays provide a low cost and low profile solution for antennas required for high gain applications but their use is restricted in some applications due to the narrow bandwidth and high loss performance. These performance limitations can be attributed to different sources of reflectivity of the reflectarrays. This work provides a thorough investigation on the reflectivity performance of … …American Journal of Engineering and Applied Sciences, Vol. 3, Issue 1 · 31 Mar 2010 · 8,628 accessesView PDF Cite

Research ArticleOpen accessIn the abstractEffects of ZnO on Dielectric Properties and Electrical Conductivity of Ternary Zinc Magnesium Phosphate GlassesS. F. Khor, Z. A. Talib, H. A.A. Sidek et al.Five different compositions of the ternary system (ZnO)x(MgO)30(P2O5)70-x containing 8, 10, 13, 15 and 18 moL% of ZnO were prepared by the melt quenching technique. The complex permittivity studies were presented in the frequency range of 0.01 Hz to 1 MHz and over the temperature range of 303-573 K. The empirical data were analyzed by means of the curve-fitting technique … …American Journal of Applied Sciences, Vol. 6, Issue 5 · 31 May 2009 · 8,240 accessesView PDF Cite

Research ArticleOpen accessAll words, across the recordRice Grain Moisture Determination Using Microstrip Wide-Ring and Microstrip Coupled-Line SensorsHou Kit Mun, Kok Yeow You, Mohamad Ngasri DimonDetermining the Moisture Content (MC) inside rice grain is an important element for grain processesing such as harvesting, storage, quality control and transportation. A microstrip wide-ring sensor and a microstrip coupled-line sensor with low insertion loss were developed to operate at relatively low frequency to determine the MC and relative complex permittivity of rice grain. The complex permittivity for rice … …American Journal of Applied Sciences, Vol. 12, Issue 2 · 3 Apr 2015 · 7,438 accessesView PDF Cite