Výsledky vyhledávání

Report

Hybrid graphene plasmonic waveguide modulators

Autor: Ansell, D., Thackray, B. D., Aznakayeva, D. E., Thomas, P., Auton, G. H., Marshall, O. P., Rodriguez, F. J., Radko, I. P., Han, Z., Bozhevolnyi, S. I., Grigorenko, A. N.

The unique optical and electronic properties of graphene allow one to realize active optical devices. While several types of graphene-based photonic modulators have already been demonstrated, the potential of combining the versatility of graphene wit

Externí odkaz: http://arxiv.org/abs/1609.04734

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Dissertation/ Thesis

Antenna performance optimisation using evolutionary algorithms

Autor: Ansell, D. W.

This thesis investigates the novel idea of using evolutionary algorithms to optimise control and design aspects of active array antenna systems. Active arrays differ from most mechanically scanned antennas in that they offer the ability to control th

Externí odkaz: http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.524203

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Report

Graphene-protected copper and silver plasmonics

Autor: Kravets, V. G., Jalil, R., Kim, Y. -J., Ansell, D., Aznakayeva, D. E., Thackray, B., Britnell, L., Belle, B. D., Withers, F., Radko, I. P., Han, Z., Bozhevolnyi, S. I., Novoselov, K. S., Geim, A. K., Grigorenko, A. N.

Publikováno v: Scientific Reports 4, 5517 (2014)

Plasmonics has established itself as a branch of physics which promises to revolutionize data processing, improve photovoltaics, increase sensitivity of bio-detection. A widespread use of plasmonic devices is notably hindered (in addition to high los

Externí odkaz: http://arxiv.org/abs/1410.1459

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Report

Singular-phase nanooptics: towards label-free single molecule detection

Autor: Kravets, V. G., Schedin, F., Jalil, R., Britnell, L., Gorbachev, R. V., Ansell, D., Thackray, B., Novoselov, K. S., Geim, A. K., Kabashin, A. V., Grigorenko, A. N.

Publikováno v: NATURE MATERIALS Volume: 12 Issue: 4 Pages: 304-309 Published: APR 2013

Non-trivial topology of phase is crucial for many important physics phenomena such as, for example, the Aharonov-Bohm effect 1 and the Berry phase 2. Light phase allows one to create "twisted" photons 3, 4 , vortex knots 5, dislocations 6 which has l

Externí odkaz: http://arxiv.org/abs/1404.4228

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Report

A Directly Coupled Superconducting Quantum Interference Device Magnetometer Fabricated in Magnesium Diboride by Focused Ion Beam

Autor: Burnell, G., Kang, D. -J., Ansell, D. A., Lee, H. -N., Moon, S. -H., Tarte, E. J., Blamire, M. G.

We report the fabrication of a directly coupled superconducting quantum interference device (SQUID) magnetometer in MgB2 using a focused ion beam (FIB) to create Josephson junctions in a 70 nm thick film of MgB2. The SQUID shows a voltage modulation

Externí odkaz: http://arxiv.org/abs/cond-mat/0203532

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