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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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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 ZnCoO layers obtained by PLD method

Abstract

Optical properties of the zinc-cobalt oxide (ZnCoO) layers manufactured at different process conditions have been investigated. ZnCoO layers were grown on sapphire and glass substrates by pulsed laser deposition (PLD) technique. The influence of growth conditions as well as post-growth annealing on the films transmission and gap energy was analyzed.

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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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Optical Properties of ZnO Thin Film

Abstract

In this work, we studied with a Matlab program, some of optical properties of zinc oxide (ZnO) deposited on glass (SiO2). The parameters studied include the refraction index, extinction coefficient, optical band gap, and complex dielectric constant versus incident photon energy, and transmittance, absorbance and reflectance spectrum of ZnO thin film deposited on glass (SiO2) for different thickness. The films were found to exhibit high transmittance (75- 95%), low absorbance and low reflectance in the visible / near infrared region up to 1000 nm. However, the absorbance of the films was found to be high in the ultra violet region with peak around 380 nm.

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FP-LMTO study of structural, electronic, thermodynamic and optical properties of MgxCd1−x Se alloys

.1002/9780470744383 [40] Salcedo-Reyes J.C., Universitas Scientiarum, 13(2) (2008), 198. [41] Firszt F., Łęgowski S., Męczyńska H., Sekulska B., Szatkowski J., Zakrzewski J., Paszkowicz W., Acta Phys. Pol. A, 95(6) (1999), 991. [42] Hernández.calderón I., Optical properties and electronic structure of wide band gap II — VI semiconductors, in TAMARGO M.C., II — VI Semiconductor Materials and their Applications, Taylor and Francis, New York, 2002, 113. [43] Okuyama H., Kishita Y., Ishibashi A., Phys. Rev. B

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Optical properties of D-serine doped TGS crystals for pyroelectric sensors

Abstract

Refractive and birefringence indices in the range of transparency of 300 to 700 nm for triglycine sulphate crystals doped with D-serine molecules have been measured in the temperature range of 290 K to 340 K. The obtained optical properties are discussed together with characteristic electrical features of these materials used as pyroelectric sensors for measurement of temperature. The experimental results obtained in this study will be necessary as the reference data for comparison with the calculated refractive indices of TGS + D-serine on the basis of density functional theory. Determination of the proper position of D-serine, will reveal the features of TGS + D-serine crystal structure necessary to achieve stable unipolarity.

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The study of structural, elastic, electronic and optical properties of CsYx I(1 − x)(Y = F, Cl, Br) using density functional theory

cubic structure [ 3 , 4 ]. Alkali halides are colored materials when exposed to radiation or impurity doping and thus they are used as detectors due to their strong scintillation effect [5] . Alkali halides are interesting materials in terms of their optical properties and often serve to test new theories [6] . The physical properties of alkali halides (or mixed alkali halides) have been reviewed by Sirdeshmukh et al. [7] . The difference in atomic sizes between mixed crystals causes local stresses in lattice and changes crystal properties, particularly lattice

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Characterisation and Optical Studies of Copper Oxide Nanostructures Doped with Lanthanum Ions

. 9 (2008), 2555. 7. Chiang C.Y., Aroh K., Franson N., Satsangi V.R., Dass S., Ehrman S.,in: Copper oxide nanoparticle made by flame spray pyrolysis for photo electrochemical water splitting -Part II. Photo electrochemical study, Int. J. Hydrogen Energy 36 (2011), 15519. 8. [8] Langford J.I. Louer D., High-resolution powder diffraction studies of copper (II) oxide,J. Appl. Crystallogr. 24(1991)149. 9. Abaker M., Umar, A. Baskoutas S., Kim S.H., Hwang S.W., in: Structural and optical properties of CuO layered hexagonal

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