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Download Analogies in Optics and Micro Electronics: Selected by Daan Lenstra, Willem van Haeringen (auth.), Willem van PDF

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By Daan Lenstra, Willem van Haeringen (auth.), Willem van Haeringen, Daan Lenstra (eds.)

This publication offers an account of a few fresh advancements in varied subfields of study, optics and micro--electronics. The major precept in offering them jointly in a single ebook is the remarkable similarity among numerous notions in those study parts. We point out during this recognize tunneling, quantum interference and localization, that are very important recommendations in quantummechanics and extra in particular in condensed subject physics. Miniaturization in strong country engineering has ended in new phenomena within which those ideas play their major roles. because it is the wave personality of electrons that is strongly emphasised in those phenomena one's consciousness is sort of obviously directed to the sphere of optics within which the above quantum-mechanical notions all appear to have their direct classical wavemechanical opposite numbers. either micro--electronics and optics were and nonetheless are in a style of intensifying job. the probabilities to technically "translate" units constructed inside of one learn box to comparable units within the different box are strongly expanding. This opens, between different issues, a door resulting in "quantummechanics" on a macroscopic scale with noticeable gentle less than fairly simply available experimental stipulations, or to "wave optics II within the area of strong country physics. pondering by way of analogies is necessary anyways, however it is principally the cross-fertilization among optics and micro--electronics which in line with the editors will bring about deepened insights and a brand new kind of technology.

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Extra info for Analogies in Optics and Micro Electronics: Selected Contributions on Recent Developments

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It can be shown that the order parameter approaches 1 frovided q was closest to Vj and to zero otherwise. We solved the equations (36 on a serial computer and calculated q(t) = E ~u(t) Vu . u (37) ~j 46 Fig. HAKEN From left to right: completion of originally presented patterns. Fig. 4 represents some of the stored prototype patterns, while Fig. ) (after Fuchs and Haken [14]). Now it is our purpose to realize the order parameter equations by means of a physical system. Such a system is provided by a fluid heated from below.

I / " I I L"_ I- -- I- f- ~ f- i- - f-- "--~ Digitalization of patterns. a) The associative memory concept (cf. [13]). Once a set of data is given, the system must be able to complement the set of data in a definite manner. For instance a telephone book is an associative memory because once we know the name and first name, the telephone book provides us with the telephone number. Similarly when we know the face and its name and the face is shown to us, we wish to remember the name. g. 2. The minima correspond to the stored patterns, places away from the minima correspond to incomplete or distorted or noisy patterns.

Now it is our purpose to realize the order parameter equations by means of a physical system. Such a system is provided by a fluid heated from below. It is well known that such a fluid may form rolls which can be oriented in different directions so that the system shows multistability. The order parameter equations of the rolls are identical with the equations (36) provided a few idealizations are made, which preserve the qualitative behavior of the solution, however. Fig. 6 shows computer calculations which exhibit the multistability.

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