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Variable topology random access memory organizations
Proceedings of the May 14-16, 1969, spring joint computer conference on XX - AFIPS '69 (Spring), 1969One of the most basic of all computer operations is the actual or virtual construction of a data sequence to be used either as the operand for a simple data transfer, or as the argument of a functional transformation. In a significant number of practical situations, the data from which the string is to be constructed are physically scattered prior to ...
Martin A. Fischler, Allen Reiter
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Random lasers based on organic epitaxial nanofibers
Journal of Optics, 2010We present a review on random lasing in organic nanofibers made of oligophenyl nanocrystals grown by molecular epitaxy on polar substrates. The nanofibers have sub-wavelength cross-sectional dimensions and can extend in length up to the millimeter scale.
Quochi, Francesco
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One-Dimensional Random Lasing in a Single Organic Nanofiber
The Journal of Physical Chemistry B, 2005One-dimensional light amplification in individual p-sexiphenyl nanofibers is investigated. The influence of fiber morphology on light propagation properties is studied via optical and atomic force microscopy. Isolated nanofibers are shown to yield low-threshold random laser emission in the deep blue.
QUOCHI, FRANCESCO +5 more
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Random Lasers Based on Organic-Inorganic Hybrids
MRS Proceedings, 2002AbstractLaser action is demonstrated in organic/inorganic nanocomposites consisting of pristine and surface-modified ZnO nanoparticles dispersed in an optically inert polymer matrix. The semiconductor particles feature simultaneously gain behavior and strong scattering ability, whereas the polymer matrix provides better processability and mechanical ...
E.P. Giannelis +7 more
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How random interacting organizes a population
Synthese, 1960The purpose of this paper is to explore the relations between (a) the random diffusion of an attribute through a population called 'System A,' which is defined by the formula A = ? kqt logg qt and (b) the change in the amount of information, H, (or 'complexity,' 'organization,' or 'uncertainty') in System A, with implications for further research ...
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Domainlike Organizations in Ferroelectrics Containing Quenched Randomness
MRS Proceedings, 1996AbstractTransmission electron microscopy studies of the (1-x)Pb(Mg1/3Nb2/3)O3-(x)PbTiO3 (PMN-PT (1-x)/x) crystalline solution have been performed for x=0.1, 0.2, 0.35, and 0.60. Bright-field imaging has revealed a common sequence of domain-like states with increasing x. Normal micron-sized ferroelectric domains were found for x>0.40.
Dwight Viehland +3 more
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A Self-Organizing Random Array Communications Relay
IEEE Transactions on Communications, 1983A sparse random array with self-organizing properties is proposed as a communications relay. The relay consists of N randomly deployed, low-power transmit/receive elements with capabilities for phasing their retransmissions to arrive coherently at the ultimate destination. Signal-to-noise ratio results for conventional modulation schemes corrupted with
J. Vespoli +3 more
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Charge transport in random organic photoconductors
Advanced Materials, 1993Electrophotography, the technology of modern photocopiers, is the only area in which the photoelectronic properties of organic materials are exploited on a large‐scale industrial basis. Neither crystalline nor polycrystalline materials can meet the requirements set by current designs, and polymers are obvious candidates.
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Geminate pair dissociation in random organic systems
Chemical Physics Letters, 1997Abstract The temperature dependences of (i) intrinsic photogeneration, (ii) photoinjection of holes from an indium tin oxide (ITO) electrode via excited state dissociation at the interface and (iii) dark injection from an ITO anode have been studied for a variety of random organic systems.
S. Barth +4 more
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Biological organization, Jarkievich measures and asymmetric random walks
Biosystems, 1985In this paper we analyze the organization imposed by the energy input during the migration of enzymes on DNA. We attempt to measure that organization by means of a concept proposed by A.A. Jarkievich in 1961. We found relationships among a Jarkievich measure, the energy dissipation, and the fluctuations in the kinematic velocity of the enzyme on the ...
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