One-dimensional energy migration

Two-dimensional energy migration was observed for NaEuTi04 (195) and EuMgAliiOig (196). One-dimensional energy migration was ob-... 

Energy transfer first occurs from Ce " to Gd " ions. The energy then migrates along the one-dimensional Gd chains until it reaches a Tb " ion. 

According to Eq. 5, the interaction with water is determined by the site populations n, and by matrix A with elements Ag, which can, in principle, be specified if solvation energies for oxidized states of G bases in DNA are known. So far calculations of solvation energies were performed assuming that polarization dynamics is slower than electronic motion [34]. Within this limit, migration of a hole initially localized on any G site can be viewed as the motion in the x direction proceeding along a certain one-dimensional... 

Fig. 1. STM images resolving (a) the hexagonal atomic structure of the close-packed fcc(lll) surface and (b) the anisotropic fcc(llO) surface of Ag. The surface unit cells and high symmetry directions are marked, (c) Schematic one-dimensional potential energy surface experienced by a simple individual adsorbate along a high-symmetry surface direction (Em migration energy barrier ICf, bonding energy a surface lattice constant).

Pinally we note that the energy migration over the Gd sublattice seems to be less one-dimensional than the crystal structure suggests [23]. Table 6.1 shows that the use of Gd host lattices makes it possible to convert more ultraviolet radiation into visible light. Table 6.2 summarizes the energy transfer processes in the green phosphors considered above. 

---