Processing Methyl Modified Silicate Materials for Optical Applications: A Structural Stability Study

1996 ◽  
Vol 435 ◽  
Author(s):  
A. Sarkar ◽  
Y. Yan ◽  
Z. Duan ◽  
Y. Hoshino ◽  
S. Ray Chaudhuri
Keyword(s):  
Structural Stability ◽  
Stability Study ◽  
Optical Applications ◽  
Silicate Materials

Organic/Inorganic Hybrid Silicate Materials for Optical Applications; Highly Fluorinated Hybrid Glasses Doped with (Erbium-ions/CdSe nanoparticles) for Laser Amplifier Material

2004 ◽  
Vol 846 ◽  
Author(s):  
Kyung M. Choi ◽  
John A. Rogers
Keyword(s):  
Fluorescence Intensity ◽  
Nano Particles ◽  
Laser Amplifier ◽  
Inorganic Hybrid ◽  
New Family ◽  
Erbium Ions ◽  
Optical Applications ◽  
Hybrid Silicate ◽  
Chemical Strategy ◽  
Silicate Materials

A new family of organic/inorganic hybrid silicate materials, bridged polysilsesquioxanes, was designed and synthesized through a molecular-level mixing technique. Since hybrid materials in the molecular-composite level, whose domain sizes are in the nanometer-scale, and whose constituents often lose individual identities and thus create new properties, we obtained a set of improved properties from those organically modified glasses. By modifying the Si-O-Si polymeric network, in this study, we produced controllable, porous hybrid glasses for facile and uniform doping of various ions, metals or semiconductor particles. By taking advantage of void volume created in those molecularly modified silicate systems, novel optical materials with designed properties can thus be achieved. Via a chemical strategy, we designed hexylene- or fluoroalkylene-bridged hybrid glasses doped with both Er+3 ions and CdSe nano-particles for the development of new laser amplifier materials. In photoluminescence experiments, a significant enhancement in fluorescence intensity at 1540 nm has been obtained from the fluoroalkylene-bridged glass. The presence of CdSe nano-particles, by virtue of their low phonon energy, also appears to significantly influence the nature of the surrounding environment of Er+3 ions in those modified silicate systems, resulting in the increased fluorescence intensity.

Research on Structural Stability of Prilling Tower in Fertilizer Industry

2013 ◽  
Vol 368-370 ◽  
pp. 1556-1565
Author(s):  
Hua Zhang ◽  
Qi Ming Li
Keyword(s):  
Structural Stability ◽  
Evaluation Method ◽  
Stability Study ◽  
Effective Length ◽  
Normal Operation ◽  
Fertilizer Plant ◽  
Elastic Plastic ◽  
Analytical Results ◽  
Advanced Analysis ◽  
The Stability

Prilling tower is the core structure in the technological process of Nitro-compound fertilizer plant, whose safety is directly related to the normal operation of fertilizer production. Prilling tower is a hollow high special structure which is constructed by concrete-filled steel tubular (CFT) columns bonded by annularity truss and widely used in fertilizer plant. The stability study of the tower is still a blank at present as the structure's specific form. In this paper, buckling analysis is used to analyze the structure in order to define the CFT prilling tower's effective length, according to its characteristics. Its effective length is calculated with equivalent negative stiffness method and the stiffness demands of annularity truss are identified. Elastic-plastic stable assessment of structural stability is carried on using advanced analysis method. A new load model and evaluation method (lateral loading method) has been proposed based on advanced analytical results, which is suitable for evaluating elastic-plastic stability of high-rise steel structure. The stability design methods of such structures are also presented according to the analytical results, providing reference for similar structures and projects.

First principles study of the elastic properties of Li2MnSiO4−ySy

2015 ◽  
Vol 3 (10) ◽  
pp. 5449-5456 ◽  
Author(s):  
Lin Zhu ◽  
Lin Li ◽  
Taimin Cheng ◽  
Dongsheng Xu
Keyword(s):  
Elastic Properties ◽  
Structural Stability ◽  
First Principles ◽  
First Principles Calculations ◽  
First Principles Study ◽  
Silicate Materials ◽  
Charge Discharge

First principles calculations were performed to investigate the elastic properties of Li2MnSiO4−ySy (y = 0, 0.5, 1, 2, 4) with the aim of improving the structural stability of silicate materials during charge/discharge cycles.

Structural stability study of protein monolayers in air

2004 ◽  
Vol 69 (3) ◽  
Author(s):  
P. Pompa ◽  
A. Biasco ◽  
R. Cingolani ◽  
R. Rinaldi ◽  
M. Verbeet ◽  
...  
Keyword(s):  
Structural Stability ◽  
Stability Study ◽  
Protein Monolayers

Structural stability study of cobalt ferrite-based nanoparticle using micro Raman spectroscopy

2004 ◽  
Vol 272-276 ◽  
pp. 2357-2358 ◽  
Author(s):  
M.A.G. Soler ◽  
T.F.O. Melo ◽  
S.W. da Silva ◽  
E.C.D. Lima ◽  
A.C.M. Pimenta ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Structural Stability ◽  
Cobalt Ferrite ◽  
Stability Study ◽  
Micro Raman Spectroscopy
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