Other

University of Leeds

Christopher David Wood

Alexander Giles Davies

Michael J Robertson

David Graham Moodie

Edmund Harold Linfield

Xin Chen

Christoph Walti

Paul John Cannard

Alban Josiah Smith

John Cunningham

Richard O'Rorke

A method and apparatus for manipulating polarizable dielectric particles. The method includes positioning a liquid containing the particles above a surface of a piezoelectric material (). The method also includes inducing a shear-horizontal surface acoustic wave in the piezoelectric material (), thereby to form a time-varying non-uniform evanescent electric field extending into the liquid. The method further includes using the time-varying non-uniform evanescent electric field to apply a force to at least some of the particles () by dielectrophoresis.

Method and apparatus for manipulating particles

A method of generating radiation comprises: manufacturing a structure comprising a substrate supporting a layer of InGaAs, InGaAsP, or InGaAlAs material doped with a dopant, said manufacturing comprising growing said layer such that said dopant is incorporated in said layer during growth of the layer; illuminating a portion of a surface of the structure with radiation having photon energies greater than or equal to a band gap of the doped InGaAs, InGaAsP, or InGaAlAs material so as to create electron-hole pairs in the layer of doped material; and accelerating the electrons and holes of said pairs with an electric field so as to generate radiation. In certain embodiments the dopant is Fe. Corresponding radiation detecting apparatus, spectroscopy systems, and antennas are described.

Generating and detecting radiation

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Leeds, United Kingdom

Christopher David Wood