Structure-transmittance relationship in transparent ceramics

Shahbazi, Hossein; Tataei, M.; Enayati, M.H.; Shafeiey, A.; Malekabadi, M. Azizi

doi:10.1016/j.jallcom.2019.01.124

Cited by 51 publications

(23 citation statements)

References 197 publications

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“…These facts can be justified through the crystalline structure that the ceramic blocks present. It is known that these blocks are formed by ionic bonds, and because of this, there are very few slip systems, where the movement of the dislocations can occur [29,30]. This is due to the electrically charged nature of the ions that make up this material, which causes positions where the same charge ions are placed close to each other, causing static repulsion.…”

Section: Resultsmentioning

confidence: 99%

Analysis of deformability modulus by linear and nonlinear elastic methods in ceramic structural masonry and mortars

Cerqueira¹,

Marvila²,

Azevedo³

et al. 2020

Cerâmica

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There are studies analyzing the parameters of structural masonry strength, however few are performed evaluating the interference of the mortar in the deformability parameters. The objective of this study was to verify the theories of elasticity (Hooke’s linear model and nonlinear models by Ghosh, Duffing, and Martin, Roth, and Stiehler) applied to structural masonry. Ceramic blocks were pressed and fired at 890 ºC and mortars prepared with the proportion 1:1:5:0.5:2 of cement: hydrated lime: sand: PVA binder: water. The materials were tested in compression individually and in prisms with and without the use of mortars. The results obtained with the linear elastic analysis were incoherent since the deformability modulus obtained for the mortar prisms was higher than those without mortar. Performing the analysis by nonlinear theories, it was found that the results obtained were more coherent, mainly by Duffing’s theory that uses one parameter for stiffness and another for damping of the material.

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Section: Resultsmentioning

confidence: 99%

Analysis of deformability modulus by linear and nonlinear elastic methods in ceramic structural masonry and mortars

Cerqueira¹,

Marvila²,

Azevedo³

et al. 2020

Cerâmica

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“…Transparency is a property that measures the ability of the material to allow the light pass through without scattering [40]. In the current study an attempt was made to produce the hydrogel dressings delivering this feature.…”

Section: Optical Transmission and Transparency Testmentioning

confidence: 99%

Production and characterisation of bacterial cellulose hydrogels loaded with curcumin encapsulated in cyclodextrins as wound dressings

Gupta

Keddie

Kannappan

et al. 2019

European Polymer Journal

102

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“…In the region of the visible spectrum, marked by high optical transmittance related to photon energy for values between 1.7 and 3.1 eV, [ 46 ] the graph indicates the percentage of radiation transmitted in the film structure does not show interference fringes, due to the low thickness value [ 47 ] and the low interaction of the electric and magnetic fields of radiation with the charge carriers in the film structure. [ 48 ] It is noteworthy that the AZO film deposited with an atmosphere of 75% argon and 25% oxygen, has a transmittance equal to or greater than 90%, in a range of the visible spectrum.…”

Section: Resultsmentioning

confidence: 99%

Structural and Optical Properties of ZnO:Al Thin Films Produced by Magnetron Sputtering with Different Oxygen Flow: An Experimental and Ab Initio Study

Queiroz

Filho

Feitor

et al. 2020

Physica Status Solidi (a)

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This work addresses, in an experimental and theoretical way, the influence of different oxygen pressure values on the physical and electronic properties of thin conductive and transparent oxide films of Al‐doped ZnO, with different thicknesses. A series of characterization techniques, which include X‐ray diffraction (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM), optical spectrophotometry, and Hall measurements are conducted. All films have a hexagonal wurtzite structure characteristic of ZnO, with preferential orientation along the plane (002) and transmittance values, in the visible range, greater than 80%. The increase in flow oxygen up to 25% provides an increase in the film's density resulting in a decrease in electrical resistivity from 9.58 × 10−3 Ω cm to 8.14 × 10−3 Ω cm. The ab initio calculations allow to observe the distortions in the microstructure of the films attributed to the presence of impurities and to obtain the values of the total and formation energies. The values of the Mulliken population and chemical bond length are notoriously influenced by the concentration of oxygen in the atmosphere. The displacement of the valence band (VB) and the Fermi level, together with the decrease in the gap energy, reinforce the influence of oxygen gas on the electronic structure of the films.

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Structure-transmittance relationship in transparent ceramics

Cited by 51 publications

References 197 publications

Analysis of deformability modulus by linear and nonlinear elastic methods in ceramic structural masonry and mortars

Analysis of deformability modulus by linear and nonlinear elastic methods in ceramic structural masonry and mortars

Production and characterisation of bacterial cellulose hydrogels loaded with curcumin encapsulated in cyclodextrins as wound dressings

Structural and Optical Properties of ZnO:Al Thin Films Produced by Magnetron Sputtering with Different Oxygen Flow: An Experimental and Ab Initio Study

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