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Your search keyword '"Whiteman, R"' showing total 115 results
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115 results on '"Whiteman, R"'

1. Giant Relaxation Oscillations in a Very Strongly Hysteretic SQUID ring-Tank Circuit System

Author

Clark, T. D., Prance, R. J., Whiteman, R., Prance, H., Everitt, M. J., Bulsara, A. R., and Ralph, J. F.

Subjects
Condensed Matter - Superconductivity
Abstract

In this paper we show that the radio frequency (rf) dynamical characteristics of a very strongly hysteretic SQUID ring, coupled to an rf tank circuit resonator, display relaxation oscillations. We demonstrate that the the overall form of these characteristics, together with the relaxation oscillations, can be modelled accurately by solving the quasi-classical non-linear equations of motion for the system. We suggest that in these very strongly hysteretic regimes SQUID ring-resonator systems may find application in novel logic and memory devices., Comment: 7 pages, 5 figures. Uploaded as implementing a policy of arXiving old papers

Published
2004
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2. Pinch Resonances in a Radio Frequency Driven SQUID Ring-Resonator System

Author

Prance, H., Clark, T. D., Whiteman, R., Prance, R. J., Everitt, M. J., Stiffell, P., and Ralph, J. F.

Subjects
Condensed Matter - Superconductivity
Abstract

In this paper we present experimental data on the frequency domain response of a SQUID ring (a Josephson weak link enclosed by a thick superconducting ring) coupled to a radio frequency (rf) tank circuit resonator. We show that with the ring weakly hysteretic the resonance lineshape of this coupled system can display opposed fold bifurcations that appear to touch (pinch off). We demonstrate that for appropriate circuit parameters these pinch off lineshapes exist as solutions of the non-linear equations of motion for the system., Comment: 9 pages, 8 figures, Uploaded as implementing a policy of arXiving old papers

Published
2004
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5. Observation of Quantum Jumps in Squid Rings

Author

Prance, R. J., Whiteman, R., Clark, T. D., Diggins, J., Prance, H., Ralph, J. F., Buckling, G., Colyer, G., Vittoria, C., Widom, A., Srivastava, Y., Belavkin, V. P., editor, Hirota, O., editor, and Hudson, R. L., editor

Published
1995
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10. Giant relaxation oscillations in a very strongly hysteretic superconductive quantum interference device ring-tank circuit system

Author

Clark, T.D., Bulsara, A.R., Prance, R.J., Ralph, J.F., Whiteman, R., Prance, H., and Everitt, M.J.

Subjects
Superconductive devices -- Electric properties, Oscillation -- Analysis, Relaxation phenomena -- Analysis, Physics
Abstract

The radio frequency (rf) dynamical characteristics of a very strongly hysteretic superconducting quantum interference device (SQUID) ring, coupled to an rf tack circuit resonator display relaxation oscillations. It is demonstrated that the overall form of these characteristics, together with the relaxation oscillations can be modeled accurately by solving the quasiclassical nonlinear equations of motion for the system.

Published
2001

11. Elementary Problems: E1965-E1974

Author

Gabai, Hyman, Szabo, Steven, Klamkin, M. S., Blanchard, W. L., Just, Erwin, Quoniam, J. M., Dowds, R. E., Whiteman, R. A., Starke, E. P., Bieri, H. P., and Harter, Richard

Published
1967
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13. Organic Diode Rectifiers Based on a High-Performance Conjugated Polymer for a Near-Field Energy-Harvesting Circuit

Author

Higgins, SG, Agostinelli, T, Markham, S, Whiteman, R, Sirringhaus, H, Higgins, Stuart [0000-0002-4653-5364], Sirringhaus, Henning [0000-0001-9827-6061], and Apollo - University of Cambridge Repository

Subjects
energy harvesting, RFID, organic diodes, NFC, Hardware_INTEGRATEDCIRCUITS, organic semiconductors
Abstract

Organic diodes manufactured on a plastic substrate capable of rectifying a high-frequency radio-frequency identification signal (13.56 MHz), with sufficient power to operate an interactive smart tag, are reported. A high-performance conjugated semiconductor (an indacenodithiophene-benzothiadiazole copolymer) is combined with a carefully optimized architecture to satisfy the electrical requirements for an organic-semiconductor-based logic chip.

Published
2017
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19. Non-linear Multi-level Dynamics of a SQUID Ring-resonator System in the Hysteretic Regime

Author

Prance, R J, Whiteman, R, Clark, T D, Prance, H, Schollmann, V, Ralph, J F, Al-Khawaja, S, and Everitt, Mark

Abstract

We consider the dynamical behavior of a strongly hysteretic SQUID ring coupled to a radio frequency resonator. By experiment we show that this system can display novel multiple level structures in its rf voltage-current characteristics which are solutions of the nonlinear equations of motion describing the system.

Published
1999

25. Non-adiabatic phenomena in a coupled SQUID ring-tank circuit system in the strongly hysteretic regime.

Author

Prance, H., Whiteman, R., Prance, R. J., Clark, T. D., Ralph, J. F., Scho¨llmann, V., Everitt, M., and Al-Khawaja, S.

Subjects
*SUPERCONDUCTING quantum interference devices, *TANK circuits
Abstract

In this paper we consider new and remarkable dynamical behavior displayed by a strongly hysteretic SQUID (Superconducting QUantum Interference device)-a single Josephson weak link enclosed by a thick superconducting ring inductively coupled to a radio frequency (rf) parallel LC tank circuit resonator. Experimentally, we show that in the strongly hysteretic regime this coupled system can display remarkable level structure in its dynamics, quite different to that normally associated with rf driven SQUID ring systems. We demonstrate theoretically that this level structure arises when the SQUID ring responds non-adiabatically to time dependent changes in its potential, i.e. so that the ring no longer stays at or very close to the minimum in this potential as it changes in time. © 2000 American Institute of Physics. [ABSTRACT FROM AUTHOR]

Published
2000

41. Helping to Plan a Bank's Manpower Resources

Author

Jones, R. C., Morrison, S. R., and Whiteman, R. P.

Abstract

A general description is given of how OR methods have been applied to manpower planning in a large British bank, with particular reference to management succession. The importance of close co-operation with senior management to ensure the success of the work is emphasised. Detailed mathematical formulations of the problems and their solutions are not discussed.

Published
1973
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42. LETTERS.

Author

WHITEMAN, R. T., DRAKE-LONG, CHARLES, DUDLEY, ANN, GETTLER, ELIZABETH J., FISHER, RICHARD N., WALTERS, BASIL L., LYMAN, DAVID E., BLOOM, MAURICE J., SCHWERTFEGER, ANN, FURLAN, GIACINTO, BORMAN, M. M., PLUNKETT JR., JAMES J., DE BLANC, IRVING A., TALBOTT, EARL G., and TURLEY, KATHLEEN

Subjects
LETTERS to the editor, WOMEN theologians, FEMINISTS
Abstract

Several letters to the editor are presented in response to articles in the previous issues including the story on female theologians and feminist concerns, an article on Ray Peterson's recording of "Tell Laura I Love Her" and the article on Brazilian lands and Pan American Airways Corp. vice president Humphrey Toomey in the June 20, 1960 issue.

Published
1960

47. Mathematical Notes

Author

Brearley, M. N., primary, Haines, J. S., additional, Machover, Maurice, additional, Bernau, S. J., additional, Pellett, D. A., additional, Bush, K. A., additional, Blakley, G. R., additional, Coppage, W. E., additional, Dixon, R. D., additional, Satyanarayana, M., additional, Giesy, D. P., additional, Lindgren, W. F., additional, Amir-Moéz, A. R., additional, Eagon, J. A., additional, Leipnik, Roy, additional, Oberg, R., additional, Whiteman, R. A., additional, Entringer, R. C., additional, Chrislock, J. L., additional, Mullin, A. A., additional, Peyser, Gideon, additional, Brown, J. W., additional, Gross, Fred, additional, Hayden, T. L., additional, Duemmel, James, additional, and Malone, J. J., additional

Published
1967
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