INDEX layered structures

In situ Fourier transform infrared and in situ infrared reflection spectroscopies have been used to study the electrical double layer structure and adsorption of various species at low-index single-crystal faces of Au, Pt, and other electrodes.206"210 It has been shown that if the ions in the solution have vibrational bands, it is possible to relate their excess density to the experimentally observed surface. 

Fig. 2.15 Organosiloxane-based layered structure containing high-hyperpolarizable chromophore arrays (A) without inserted layer of refractive index modifying Ga and In oxide layers (B) with inserted layer of refractive index modifying Ga and In oxide layers.

There are great similarities between the atomic layer structures formed by Te, Se and S on the low index planes of Au [238]. Table 2 shows a listing of structures... 

Figure 1. Schematic view of the one-dimensional layered structure. The vertical lines denote discontinuities of refractive index distribution. The monochromatic plane wave is incident in the y direction with the electric field amplitude The amplitudes of reflected and transmitted waves are ref and, respectively.

A three-layer, planar optical waveguide consists basically of a high-RI film with RI np that is sandwiched between two lower-refractive-index materials referred to as the substrate and the cover medium with RIs ns and c> respectively Fig. 2. If Maxwell s equations are solved for such a layered structure, the following solutions for the electromagnetic field [Pg.281]

Generalization to layered structures is then a matter of successive matrix multiplications. Consider next the case in which there is a layer of thickness bi of material Bi on material R (see Fig. L3.5). Here, for one layer on one side, and later for successive layerings on either side, we create matrix products of the form Mr M / where the inner index m is the intervening medium and we seek interactions between the coated materials R and L. In the single-layer case of Fig. L3.5, matrix MRm is replaced with... 

The change in dB provides additional information about the refractive index of the thin films that have three- or two-layer structures [8]. 

Besides, the authors discovered an intercalation effect during activation. Intercalation involves the insertion of calcium ions into aluminium hydroxide lattice which possesses a layered structure. Intercalation takes place between hydroxide layers over the planes with Miller index 002. A maximum increase of the distance is observed in Al(OH)3+CaO mixture (from 0.4850 to 0.4875 nm) while in Al(OH)3+ Ca(OH)2 mixture, it changes not so significantly (to 0.4867 nm). 

The complete X-ray powder pattern of InSe, not previously published, has been indexed " on the basis of a layer structure in the space group R3m, with ao = 4.0046, Co = 25.960 A. The effects of various heat treatments on the powder patterns were discussed. A crystal-structure determination has given the same space group, with the lattice constants ao = 4.00 and Co = 25.32 A. The structure can be considered as being formed of double layers of selenium atoms, parallel to the (001) plane, between which occur pairs of indium atoms. 

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