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Vibrational, electrical, dielectric and optical properties of PVA-LiPF6 solid polymer electrolytes


Solid polymer electrolytes based on polyvinyl alcohol (PVA) doped with LiPF6 have been prepared using solution casting technique. Electrical properties of prepared electrolyte films were analyzed using AC impedance spectroscopy. The ionic conductivity was found to increase with increasing salt concentration. The maximum conductivity of 8.94 × 10−3 S·cm−1 was obtained at ambient temperature for the film containing 20 mol% of LiPF6. The conductivity enhancement was correlated to the enhancement of available charge carriers. The formation of a complex between the polymer and salt was confirmed by Fourier transform infrared spectroscopy (FT-IR). The optical nature of the polymer electrolyte films was analyzed through UV-Vis spectroscopy.

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Broadband spectroscopy for characterization of tissue-like phantom optical properties

;3(6):1399-1403. [4] Flock ST, Jacques LS, Wilson CB, et al. Optical properties of Intralipid: a phantom medium for light propagation studies. Lasers Surg Med. 1992;12(5):510-519. [5] Moffitt T, Chen CY, Prahl AS. Preparation and characterization of polyurethane optical phantoms. J Biomed Opt. 2006;11(4): 041103-10. [6] Lamouche G, Kennedy FB, Kennedy MK, et al. Review of tissue simulating phantoms with controllable optical, mechanical and structural properties for use in optical coherence tomography. Biomed Opt Express. 2012;3(6):1381-1398. [7] Chang RC, Johnson

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Optical properties of translucent zirconia: A review of the literature

an improved optical property for applications as a dental ceramic. J Ceram Process Res 2011; 12: 473-476. 54. Kim MJ, Ahn JS, Kim JH, Kim HY, Kim WC. Effects of the sintering conditions of dental zirconia ceramics on the grain size and translucency. J Adv Prosthodont 2013; 5: 161-6. 55. Zhang HB, Kim BN, Morita K, Yoshida H, Lim JH, Hiraga K. Optimization of high-pressure sintering of transparent zirconia with nano-sized grains. J Alloy Compd. 2010; 508: 196-199. 56. Lucas TJ, Lawson NC, Janowski GM, Burgess JO. Effect of grain size on the

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Determining the optical properties of blood using He-Ne laser and double integrating sphere set-up

References [1] Boulpaep E, Boron F (eds). Medical physiology. 2 nd ed. Saunders and Philadephia, PA: Saunders/Elsevier. 2009. [2] van der Pol E, Boing AN, Harrison P, et al . Classification, functions and clinical relevance of extracellular vesicles. Pharmacol Rev. 2012;64(3):676-705. [3] Kolesnicova IV, Potapov SV, Yurkin MA, et al . Determination of volume, shape and refractive index of individual blood platelets. J Quant Spectrosc Radiat Transf. 2006;102(1):37-45. [4] Cheoung WF, Welch A, Prahl S. A Review of the Optical Properties

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Optical properties of zinc titanate perovskite prepared by reactive RF sputtering

of amorphous materials the interband region,”, Appl.Phys.Lett. , vol. 69, 1996, pp. 371-373 and erratum Appl.Phys.Lett. , vol. 69, 1996, p. 2137. [21] X.-C. Zhang, C.-M. Fan, Z.-H. Liang and P.-D. Han, “Electronic structures and optical properties of ilmenite-type hexagonal ZnTiO 3 ”, Acta Phys.-Chim.Sin. , vol. 27, 2011, pp. 47–51. [22] G. Battilana, A. Bottino, G. Capannelli and P. Nanni, “The preparation of porous perovskite membranes using BaTiO 3 nanopowders”, J.Mat.Sci. , vol. 37, 2002, pp. 4343–4347. [23] T. C. Choy Effective medium

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Electronic structure and optical properties of (BeTe)n/(ZnSe)m superlattices

of all the elements, with strong hybridizations between the Te 5p and Te 5d states, as well as the Se 4p and Se 4d states. 3.3 Optical properties In this section, we discuss the optical properties of a material that must be investigated to determine its potential usefulness in optoelectronic applications. For this reason, we only chose the materials that showed a direct band gap character in our LDA study. When examining the optical response of the compounds under investigation, it is convenient to take into account the transitions of electrons from the

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Investigation of optical properties of silicon oxynitride films deposited by RF PECVD method

microelectronics due to their adequate electrical, thermal and mechanical properties. However, SiO 2 dielectric films have reached the technological limit as the properties of silicon dioxide are unsatisfactory for novel micro- and optoelectronic devices. Additionally, the silicon oxynitride films have better not only dielectric, but also optical properties. The optical losses in SiO x N y films are significantly lower and the refractive index of the films can be adjusted from 1.46 to around 2.1. Therefore, in the future silicon oxynitride can replace silicon dioxide in the

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First-principles study of electronic and optical properties of cubic perovskite CsSrF3

.1103/PhysRevB.3.1862 [25] Ambrosch-Draxl C., Sofo J.O., Comput. Phys. Commun., 175 (2006), 1. [26] Fox M., Optical Properties of Solids, Oxford University Press, New York, 2001. [27] Wooten F., Optical properties of Solids, Acadmic Press, New York, 1972, p.179. [28] Maqbool M., Amin B., Ahmed I., J. Opt. Soc. Am., B, 26 (2009), 2180. [29] Maqbool M., Kordesch M. E., Kayani A., J. Opt. Soc. Am. B, 26

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Electronic and optical properties of Mn–S co-doped anatase TiO2 from first-principles calculations

electron transition and enhance the light absorption. However, it can also act as recombination centers [ 36 ]. Fig. 5 Absorption spectra of pure TiO 2 , Mn/TiO 2 , S/TiO 2 and Mn–S/TiO 2 . 3.4. Optical properties In order to explore the absorption properties, the optical absorption spectra of pure anatase TiO 2 , Mn/TiO 2 , S/TiO 2 and Mn–S/TiO 2 were calculated on the basis of the detailed electronic band structure as shown in Fig. 5 . Because of the underestimated band gap of pure TiO 2 , we induced a scissors operator of 1.032 eV (band gap

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Effect of NaOH concentration on optical properties of zinc oxide nanoparticles

1 Introduction ZnO is a direct bandgap wurtzite semiconductor having bandgap of 3.37 eV and large exciton binding energy (∼60 meV) at room temperature [ 1 ]. With the advent of nanotechnology, zinc oxide (ZnO) has been a center of attraction. The reasons for the keen interest in ZnO were attributed to its excellent properties such as easy synthesis, tunable bandgap [ 2 ], controllable shape and size, low cost of production and non-toxicity [ 2 ]. Most important amongst all are its remarkable optical properties which allow ZnO to emit light in the entire

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