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Ullman Silicates

Silicates In the liquid phase, albite is one of the most strongly dissociated silicates. The rate of crystallization in alkali feldspar melts is extremely small due to their high melt viscosity. The fusion range of natural orthoclase is 1140 1300 C (incongruent melting, see also Section 2.3). Get price

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The photoluminescence excitation and steady-state photoluminescence spectra of nonstoichiometric zirconium oxide films with a high concentration of oxygen vacancies have been investigated. A band with energy of about 2.7 eV in the blue spectral region dominates in photoluminescence Get price

Cathodoluminescence in geosciences (eBook, 2000)

Get this from a library! Cathodoluminescence in geosciences. [Maurice Pagel;] -- This book presents an up-to-date overview of cathodoluminescence microscopy and spectroscopy in the field of geosciences. For a decade, no books have been dedicated to this topic. Get price

Recent Advances in Science and Technology of Materials :

Get this from a library! Recent Advances in Science and Technology of Materials : Volume 2. [Adli Bishay] -- It is generally accepted that. fused BZ03 is composed of B0 3 triangles. These triangles are joined togetner randomly, forming l the glass network. I.R Get price

A porous, electrically conductive hexa

Introduction Metal–organic frameworks (MOFs) are a large and growing class of porous, or potentially porous, materials. They are characterized by well-ordered (i.e., crystalline) combinations of multitopic organic ligands connected by coordination bonds to one or more metal ions, or metal-ion-containing clusters. 1–4 The enormous potential and experimentally realized compositional variety Get price

Discovery of New Nitridosilicate Phosphors for Solid State

Discovery of novel luminescent materials is of fundamental importance in the advancement of solid state lighting and flat panel display technologies. In this work, we report a single-particle-diagnosis method for the discovery of new phosphors by just characterizing a luminescent crystalline particle as small as 10 μm in diameter. We explored single-particle fluorescence imaging and Get price

Unprecedented Deep

Ce3+ doped solids find broad application, e.g. in phosphor converted light emitting diodes, utilizing the usually broad blue to yellow-orange emission of the respective phosphors. The red to infrared spectral range was not yet accessible with the activator Ce3+, even in nitride host materials. Here, we report on the nitridolithosilicates Li38.7RE3.3Ca5.7[Li2Si30N59]O2F (RE = La, Ce, Y) with Get price

Point of Rocks Quarry, Point of Rocks Mesa (Pecks Mesa),

Point of Rocks Quarry, Point of Rocks Mesa (Pecks Mesa), Springer, Colfax Co., New Mexico, USA : A phonolite sill, consisting of alkali feldspar, zeolites and nepheline, which caps a mesa of olivine basalts and Cretaceous sedimentary rocks. Get price

Lanthanide luminescence for functional materials and bio

Lanthanide luminescence for functional materials and bio-sciences† Svetlana V. Eliseeva a and Jean-Claude G. Bnzli * ab a Laboratory of Lanthanide Supramolecular Chemistry, Swiss Federal Institute of Technology, Lausanne (EPFL). E-mail: jean-claude.bunzliepfl.ch; Fax: +41 21 693 9825; Tel: +41 21 6939821 b World Class University (WCU) Professor, Department of Advanced Materials Chemistry Get price

Discovery of New Nitridosilicate Phosphors for Solid State

Discovery of novel luminescent materials is of fundamental importance in the advancement of solid state lighting and flat panel display technologies. In this work, we report a single-particle-diagnosis method for the discovery of new phosphors by just characterizing a Get price

Zirconium Vanadate

Zirconium is commercially produced as a byproduct of titanium and tin mining and has many applications as a opacifier and a refractory material. It is not found in nature as a free element. The name of zirconium comes from the mineral zircon, the most important source of zirconium, and from the Persian word zargun, meaning gold -like. Get price

Ullman Silicates

Silicates In the liquid phase, albite is one of the most strongly dissociated silicates. The rate of crystallization in alkali feldspar melts is extremely small due to their high melt viscosity. The fusion range of natural orthoclase is 1140 1300 C (incongruent melting, see also Section 2.3). Get price

ON THE CARRIER OF THE EXTENDED RED EMISSION AND

2008/12/1Extended red emission (ERE), a broad red emission band at 540–950 nm, was first observed in the Red Rectangle (RR) nebula by Cohen et al. ().ERE of different widths and central wavelengths was found in reflection nebula (Witt Boroson 1990), planetary nebula (Furton Witt 1992), compact H ii regions (Darbon et al. 2000), and the interstellar medium (Gordon et al. 1998). Get price

The luminescence of zirconium silicates

1968/1/1The article considers the basic luminescence properties of zirconium silicates activated by manganese, chromium, hafnium, and rare-earth elements. The absorption, excitation, photoluminescence and radioluminescence spectra, the thermal bleaching, attenuation, and temperature-induced attenuation were examined. The term scheme of the Get price

Springer Medizin

Recently, sealers based on calcium silicates were developed as a new class of endodontic sealers. Inspired by the excellent sealing ability and biocompatibility of calcium silicate-based cements, these sealers establish a biological point of view on the obturation of root canals. Get price

An Interfacial Thermodynamic Model for the Oxidation

Home Materials Science Forum Materials Science Forum Vols. 461-464 An Interfacial Thermodynamic Model for the Electrodynamics of Continua I Foundations and Solid Media (Springer-Verlag New-York 1990). (1982), p [12] F.C. Larche and P.W Get price

Ceramic

This heat-seeking ability is responsible for such diverse optical phenomena as Night-vision and IR luminescence. Thus, there is an increasing need in the military sector for high-strength, robust materials which have the capability to transmit light ( electromagnetic waves ) in the visible (0.4 – 0.7 micrometers) and mid- infrared (1 – 5 micrometers) regions of the spectrum. Get price

Er3+/Yb3+

Aiming to accomplish synchronous optical temperature measurements in the first, second, and third biological windows, this work has carefully designed a novel ratiometric optical thermometer based on ZrO2:Er3+/Yb3+ nanocrystals synthesized by a gel combustion method. Under 980 nm excitation, the luminescence spectra consist of emissions centered at 531, 568, 660, and 1528 nm from Er3+ ions Get price

Er3+ luminescence and cooperative upconversion in

Er3+ luminescence and cooperative upconversion in ErxY2−xSiO5 nanocrystal aggregates fabricated using Si nanowires is investigated. X-ray diffraction and photoluminescence spectroscopy indicate tha 1. See, for example, Silicon Photonics, Topics in Applied Physics Vol. 94 (Springer, Berlin, 2004). Get price

Recent Advances in Science and Technology of Materials :

Get this from a library! Recent Advances in Science and Technology of Materials : Volume 2. [Adli Bishay] -- It is generally accepted that. fused BZ03 is composed of B0 3 triangles. These triangles are joined togetner randomly, forming l the glass network. I.R Get price

An Interfacial Thermodynamic Model for the Oxidation

Home Materials Science Forum Materials Science Forum Vols. 461-464 An Interfacial Thermodynamic Model for the Electrodynamics of Continua I Foundations and Solid Media (Springer-Verlag New-York 1990). (1982), p [12] F.C. Larche and P.W Get price

The Rare Earths in Modern Science and Technology

Luminescence of High-Pressure Phases of Eu2+ Activated Alkaline Earth Borates and Silicates Pages 183-186 Adachi, Gin-ya (et al.) Preview Buy Chapter 30,19 € PMR Spectroscopic Studies of Lanthanide Aminocarboxylate Complexes Pages 187-191 Get price

Lasers and Coherent Light Sources

Abstract This chapter describes lasers and other sources of coherent light that operate in a wide wavelength range. First, the general principles for the generation of coherent continuous-wave and pulsed radiation are treated including the interaction of radiation with Get price

Preparation and Luminescence Properties of Ba5Si8O21

Furthermore, its luminescence characteristics are also higher than those of the reference sample (samples 1): A 1 of 180 mcd/m 2 and 133 mcd/m 2 for C and 1, respectively (Table 2 and Figure 5). Sample C is better than sample E, which is comparable for the amount of Ba 5 Si 8 O 21 and for A 1, but the τ 2 value of which is much lower ( Table 2 ). Get price

Luminescence of copper(I) in zirconium pyrophosphate

1996/1/1Luminescence of copper(I) in zirconium pyrophosphate V. Pelova 1 L. Grigorov 1 Journal of Materials Science Letters volume 15, pages 1225 – 1227 (1996)Cite this article 45 Accesses 2 Citations Metrics details This is a preview of subscription content, log in Get price