We show that two types of mobile amorphous phases exist: the amorphous matrix and the amorphous fraction trapped in the spherulites.
It is difficult to give precise information because in the long-term the proportion of recovery as well as recovery speed are limited by the exchange between mother and bud, the amount of fluorescence bleached in the first place, and the fraction trapped in the immobile fraction.
The particulate and gas-vapor phase fractions, trapped by either filter or in solution, are also well-suited for in vitro studies using submerged cell cultures systems.
We believe such additional process is positron trapping occurring in the photopolymerized DRC, which demonstrates more than double-time stretched kinetics for both trapping rate in defects κ d and fraction of trapped positrons η (Table 1).
Describing positron trapping in terms of two-state model with only one kind of such defects, which are described by defect-specific intermediate short-lived lifetime τ 2 = τ d, the defect-free bulk lifetime τ b, trapping rate in defects κ d, and fraction of trapped positrons η can be respectively calculated [12, 13].
In a vicinity of agglomerated filler particles, the fragmented o-Ps traps convert in interfacial voids (triple junctions or pseudogap holes at the interface between outer surface layer of filler particles and innermost layer of surrounding polymer matrix), which are also efficient trapping sites for positrons (corresponding to increased fraction of trapped positrons η in light-cured DRC).
Describing positron trapping in terms of two-state model with only one kind of defects, the parameters of defect-free bulk lifetime τ b, trapping rate in defects κ d, and fraction of trapped positrons η can be simply calculated in respect to known formalism [1, 7, 8].
Because of higher atomic packing of Ga-doped ChG [8 11], this trend is accompanied by reduced second-component I 2 intensity, trapping rate in defects κ d, and fraction of trapped positrons η in addition to enlarged τ 2 lifetime, (τ 2−τ b) difference, and τ 2/τ b ratio (Table 1).
The positron trapping in g-As2Se3 is defined by PT-rate κ d = 0.92 ns−1 occurring under fraction of trapped positrons η d = 0.19.
The fraction of trapped positrons η = τ 1⋅κ d was also controlled in this research.
