منابع مشابه
Temperature Tunability of Dielectric/ Liquid Crystal / Dielectric Photonic Crystal Structures
Recently, photonic crystals doped with liquid crystal (LC) material havegained much research interest. In this article new ternary one-dimensional photoniccrystal introduced and studied. The liquid crystal layer of 5CB and 5PCH is sandwichedby two dielectric layers. For the first time, we use four structures SiO2/UCF35/CaF2,SiO2/5CB/CaF2, NFK51/UCF35/NPSK53 and NFK51/5CB/NPSK53. The effect ofte...
متن کاملThe Role of Dielectric Constant in Fractional Separation of Alkali Metals Salts from Aqueous Solutions
123704-8989-IJBAS-IJENS © August 2012 IJENS I J E N S Abstract-The effect of dielectric constant (ε) on the precipitation of Lithium, Sodium and Potassium chlorides has been investigated. At ε≈35 , 100%KCl, 58% NaCl , and 0.0%LiCl is separated from an aqueous solution mixture . Repeated procedures at selected dielectric constants achieved complete fractional separation of the three salts. Resul...
متن کاملDetermination of Dielectric Constant
Introduction The dielectric constant of PCB material is important in determining the trace width required to produce a characteristic impedance of 50 ohms, or any other desired impedance. The most commonly used material, FR-4, has a dielectric constant that may vary widely between manufacturers or batches, and also varies over frequency. It is useful to have a method to determine the dielectric...
متن کاملHigh dielectric constant oxides
The scaling of complementary metal oxide semiconductor (CMOS) transistors has led to the silicon dioxide layer used as a gate dielectric becoming so thin (1.4 nm) that its leakage current is too large. It is necessary to replace the SiO2 with a physically thicker layer of oxides of higher dielectric constant (κ) or ‘high K’ gate oxides such as hafnium oxide and hafnium silicate. Little was know...
متن کاملDielectric dispersion on the Kerr constant of blue phase liquid crystals
Dielectric dispersions on the Kerr constant of two polymer-stabilized blue phase liquid crystals (BPLCs) are investigated. An extended Cole-Cole model is proposed to fit the experimental results and good agreement is obtained. As the electric field frequency increases, Kerr constant decreases and the associated dielectric heating effect gradually increases. These results will undoubtedly affect...
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ژورنال
عنوان ژورنال: Physik der Kondensierten Materie
سال: 1973
ISSN: 1434-6028,1434-6036
DOI: 10.1007/bf02422499