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Molecular Information Processors

A very interesting extension of tlie use of PET, being explored by several schools of researchers, is in the construction of molecular scale information processors as YES, NOT, AND or XOR (exclusive-OR) and other logic gates. The use of chemical input [Pg.209]

This is a burgeoning area of research and it is now obvious that this type of work holds out the potential for molecular computers and neural networks using photon mode input (see also Chapter 5, section 5.7).  [Pg.211]


Many of the devices that have thus far been envisioned as products of nanotechnology (e.g., nanoscale environmental sensors, information processors. and actuators) cannot be produced by the large-scale microfabrication techniques currently in use. The further development of nanotechnology hinges on the understanding and manipulation of physical laws and processes at the nanometer level, such as electronic, interatomic, and mter-molecular interactions that can be manipulated lu allow efficient assembly of nanostructures. [Pg.1045]

Wild [62, 69] described the potential application of spectral hole-burning in developing a parallel information processor by combining it with the Stark effect (the interaction of molecular energy levels with an applied electric field) and the interferometric properties of holography. Data stored in two-dimensional arrays can be directly combined in parallel, without the use of an external processor. A four-... [Pg.3344]

The rapid rise in computer speed over recent years has led to atom-based simulations of liquid crystals becoming an important new area of research. Molecular mechanics and Monte Carlo studies of isolated liquid crystal molecules are now routine. However, care must be taken to model properly the influence of a nematic mean field if information about molecular structure in a mesophase is required. The current state-of-the-art consists of studies of (in the order of) 100 molecules in the bulk, in contact with a surface, or in a bilayer in contact with a solvent. Current simulation times can extend to around 10 ns and are sufficient to observe the growth of mesophases from an isotropic liquid. The results from a number of studies look very promising, and a wealth of structural and dynamic data now exists for bulk phases, monolayers and bilayers. Continued development of force fields for liquid crystals will be particularly important in the next few years, and particular emphasis must be placed on the development of all-atom force fields that are able to reproduce liquid phase densities for small molecules. Without these it will be difficult to obtain accurate phase transition temperatures. It will also be necessary to extend atomistic models to several thousand molecules to remove major system size effects which are present in all current work. This will be greatly facilitated by modern parallel simulation methods that allow molecular dynamics simulations to be carried out in parallel on multi-processor systems [115]. [Pg.61]

ChemText - Microcomputer chemical information system and chemical word processor, hardware supported IBM PC, available from Molecular Design Limited, 2132 Farallon Drive, San Leandro, CA 94577, U.S.A. [Pg.40]

Thus, a mathematical problem was solved using a kind of molecular biocomputer. From the information processing point of view, fliis was possible because parallel processing was under way-a lot of DNA ohgomers interacted wifli themselves at the same time. The number of such molecular processors is of the order of 10. This number is so huge, that such a biocomputer is able to check (virtually) aU possibilities and to find the solution. [Pg.1007]

As atoms move to new processors in step (5) the molecular connectivity information should be exchanged and updated between processors. This requires extra communication cost, depending on the type of the bonded interactions. [Pg.215]


See other pages where Molecular Information Processors is mentioned: [Pg.209]    [Pg.209]    [Pg.49]    [Pg.1026]    [Pg.3330]    [Pg.267]    [Pg.395]    [Pg.86]    [Pg.50]    [Pg.216]    [Pg.274]    [Pg.156]    [Pg.252]    [Pg.31]    [Pg.148]    [Pg.234]    [Pg.67]    [Pg.215]    [Pg.258]    [Pg.261]    [Pg.318]    [Pg.121]    [Pg.123]    [Pg.263]    [Pg.16]    [Pg.551]    [Pg.159]    [Pg.294]    [Pg.9]    [Pg.298]    [Pg.233]    [Pg.195]    [Pg.195]    [Pg.289]    [Pg.418]    [Pg.919]    [Pg.1112]    [Pg.3]    [Pg.67]   


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