H. G. Schneider. V. Ruth (ed.). Advances in epitaxy and endotaxy (physical problems of epitaxy). VEB Deutscher Verlag für Grundstoffindustrie Leipzig 1971 251 Seiten, 106 Abbildungen, 9 Tabellen Preis M 42.‐

Iridium on Biaxially Textured Oxide Templates: A Concept to Grow Single Crystals on Arbitrary Substrates

“…Scanning electron microscopy (SEM) studies of the film during the low-deposition rate step indicate an evolution of the morphology according to the liquid-like-coalescence mechanism (LLC). 14) To explain the present paradox of narrower angular spread in the overlayer than in the oxide below we consider the distribution of the twist angles which can be well described by a normal (Gaussian) distribution. During coalescence of the metal islands the number of grains decreases and it is reasonable to assume that a merged island adopts an intermediate orientation between that of the two formerly isolated grains.…”

Mathematical approximation of sigmoidal shape curves tested on sensitometric curves of photographic material

“…2, the function (3) is somewhat worse and a large deviation from the experimental curve is encountered with the function (2). With regard to the fact that the deviations between calculated and measured values are relatively smaller in the straight line portion of the sensitometric curves than at the toe of the curves, it is possible to suggest a new way for determination of the sensitivity of photographic materials according to which the critical value of exposure would be derived from the inflection point co-ordinate log Hinfl.…”

“…To get a greater possibility to express the shape of the curve in its toe and shoulder sections, equation (2) has been modified by an additional parameter d and by accepting the structure of equation (1):…”