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Crystals, Volume 3, Issue 4 (December 2013), Pages 517-553

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Research

Open AccessArticle Intermetallics Synthesis in the Fe–Al System via Layer by Layer 3D Laser Cladding
Crystals 2013, 3(4), 517-529; doi:10.3390/cryst3040517
Received: 15 May 2013 / Revised: 27 August 2013 / Accepted: 14 October 2013 / Published: 22 October 2013
Cited by 6 | PDF Full-text (1491 KB) | HTML Full-text | XML Full-text
Abstract
Intermetallide phase formation was studied in a powdered Fe–Al system under layer by layer laser cladding with the aim of fabricating the gradient of properties by means of changing the Fe–Al concentration ratio in the powder mixture from layer to layer. The [...] Read more.
Intermetallide phase formation was studied in a powdered Fe–Al system under layer by layer laser cladding with the aim of fabricating the gradient of properties by means of changing the Fe–Al concentration ratio in the powder mixture from layer to layer. The relationships between the laser cladding parameters and the intermetallic phase structures in the consecutively cladded layers were determined. In order to study the structure formation an optical microscopy, X-ray diffraction analysis, measurement of microhardness, scanning electron microscopy (SEM) with energy dispersive X-ray (EDX) spectroscopy analysis were used after the laser synthesis of intermetallic compounds. Full article
Open AccessArticle Effects of Nanoscaled Tin-Doped Indium Oxide on Liquid Crystals against Electrostatic Discharge
Crystals 2013, 3(4), 530-553; doi:10.3390/cryst3040530
Received: 2 July 2013 / Revised: 11 September 2013 / Accepted: 28 October 2013 / Published: 26 November 2013
Cited by 2 | PDF Full-text (1576 KB) | HTML Full-text | XML Full-text
Abstract
In our studies, it was confirmed that the cause of image sticking on liquid crystal (LC) cells is based on attacks of electrostatic discharge (ESD), which can be greatly relieved by doping with a small amount of tin-doped indium oxide (ITO) nanoparticles. [...] Read more.
In our studies, it was confirmed that the cause of image sticking on liquid crystal (LC) cells is based on attacks of electrostatic discharge (ESD), which can be greatly relieved by doping with a small amount of tin-doped indium oxide (ITO) nanoparticles. Our proposed remedy allows the residual time of image sticking to be significantly reduced by more than an order and may protect the LC displays against any adverse ESD conditions, thus enhancing the overall display quality and reliability. In this study, conventional voltage-transmittance (V-T) characterization, voltage holding ratio (VHR) measurement, and ESD testing were employed to investigate the properties of the ITO-doped LCs. Based on our low voltage measurement results, it is interesting to find that ITO nanoparticles do not evidently alter the intrinsic properties of the LC. Namely, ITO additive initiates an early breakdown of the doped LC samples exposed to high electric fields. A model is proposed in this paper to depict the possible role of ITO particles applied in LCs. Full article

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