12 research outputs found
Effect of Ordering on Spinodal Decomposition of Liquid-Crystal/Polymer Mixtures
Partially phase-separated liquid-crystal/polymer dispersions display highly
fibrillar domain morphologies that are dramatically different from the typical
structures found in isotropic mixtures. To explain this, we numerically explore
the coupling between phase ordering and phase separation kinetics in model
two-dimensional fluid mixtures phase separating into a nematic phase, rich in
liquid crystal, coexisting with an isotropic phase, rich in polymer. We find
that phase ordering can lead to fibrillar networks of the minority polymer-rich
phase
Photoluminescence of oxygen dominated phosphors
The mechanism of fluorescence in (a) CaW04, (b) Zn2Si04:Mn, (c) 3.5 MgO + 0.5 MgF2 +
GeO, : Mn, and (dl 3Ca,(P04), Ca(F, C1)2:Sb3+, Mn2+ under excitation by shortwave ultraviolet
is explained by the electronic transitions involved in the activators. To get a daylight phosphor
conforming to 6500"K, a blending of a sb3+ activated halophosphate blue phosphor and a
Sb3+ and Mn2+ activated warmwhite phosphor is essential and the successful preparation of
the same is presente
Photoluminescence of oxygen dominated phosphors
The mechanism of fluorescence in (a) CaW04, (b) Zn2Si04:Mn, (c) 3.5 MgO + 0.5 MgF2 +
GeO, : Mn, and (dl 3Ca,(P04), Ca(F, C1)2:Sb3+, Mn2+ under excitation by shortwave ultraviolet
is explained by the electronic transitions involved in the activators. To get a daylight phosphor
conforming to 6500"K, a blending of a sb3+ activated halophosphate blue phosphor and a
Sb3+ and Mn2+ activated warmwhite phosphor is essential and the successful preparation of
the same is presente