منابع مشابه
Near infrared broadband emission of bismuth-doped aluminophosphate glass.
Near infrared broadband emission characteristics of bismuth-doped aluminophosphate glass have been investigated. Broad infrared emissions peaking at 1210nm, 1173nm and 1300nm were observed when the glass was pumped by 405nm laser diode (LD), 514nm Ar+ laser and 808nm LD, respectively. The full widths at half maximum (FWHMs) are 235nm, 207nm and 300nm for the emissions at 1210nm, 1173nm and 1300...
متن کاملViscosity of glass-forming liquids.
The low-temperature dynamics of ultraviscous liquids hold the key to understanding the nature of glass transition and relaxation phenomena, including the potential existence of an ideal thermodynamic glass transition. Unfortunately, existing viscosity models, such as the Vogel-Fulcher-Tammann (VFT) and Avramov-Milchev (AM) equations, exhibit systematic error when extrapolating to low temperatur...
متن کاملHigh proton conduction in a new alkali metal-templated open-framework aluminophosphate.
A new open-framework aluminophosphate Na6[(AlPO4)8(OH)6]·8H2O (JU103) has been synthesized by utilization of the organotemplate-free synthetic route in alkali metal-containing system. The as-prepared JU103 possesses two-dimensional intersecting 8-ring channels. Sodium ions and water molecules in the channels facilitates JU103 excellent proton conductivity up to 3.59 × 10(-3) S cm(-1) (293 K, 98...
متن کاملOptical Properties of Tm ions in Alkali Germanate Glass
Tm-doped alkali germanate glass is investigated for use as a laser material. Spectroscopic investigations of bulk Tm-doped germanate glass are reported for the absorption, emission and luminescence decay. Tm:germanate shows promise as a fiber laser when pumped with 0.792 μm diodes because of low phonon energies. Spectroscopic analysis indicates low nonradiative quenching and pulsed laser perfor...
متن کاملAn Experimental Study of Alkali-surfactant-polymer Flooding through Glass Micromodels Including Dead-end Pores
Chemical flooding, especially alkaline/surfactant/polymer flooding, is of increasing interest due to the world increasing oil demand. This work shows the aspects of using alkaline/surfactant/polymer as an enhanced oil recovery method in the porous media having a high dead-end pore frequency with various dead-end pore parameters (such as opening, depth, aspect ratio, and orientation). Using glas...
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ژورنال
عنوان ژورنال: Journal of the Ceramic Association, Japan
سال: 1979
ISSN: 0009-0255,1884-2127
DOI: 10.2109/jcersj1950.87.1008_422