Central Research Laboratories Limited

The British Petroleum Company, P.l.c.

Other

Philip Charles Allen

Ian Gordon Gibb

Andrew David Barnes

Richard Henry Friend

Jeremy H Burroughes

Steven Edward Coe

Gregory Colin Truman

Alan Cooper Sharp

Alan J Harrison

Methods of controlling the brightness of a glow discharge

Self-aligned gate field emitter device and methods for producing the same

A plasma processing device is described which is modular and can be scaled up by assembly together with similar devices to provide a capability for large area processing. The device includes a housing which contains an array of RF coils and into which a process gas is fed. The article to be processed is disposed close to the housing and egress of the process gas from the housing to the process region is resisted so as to maintain a positive pressure differential between the housing and the process region.

Plasma processing device comprising plural RF inductive coils

This invention relates to a device for electrooptic modulation of an optical beam. The device is a laminate comprising a coherent film of a conjugated polymer having semi-conducting properties as the active component laminated with two or more layers of electrically conducting, insulating or semi-conducting materials. At least the active component in the laminate is capable of interacting with the optical beam when under the influence of an electric signal and thereby result in a modulated beam. Means are provided for (i) establishing electrical contact with one or more layers of the laminate so as to enable an electrical signal to be applied across the active component and (ii) detection of the extent of modulation of the modulated beam emerging from the active component layer.

Optical modulators based on polymers

This invention relates to poly(acetylene) films having localized zones of a material other than poly(acetylene) with modified optical and electrical properties. The films are formed by selectively irradiating discrete areas of a film of a precursor polymer followed by heating of the irradiated precursor polymer to transform the non-irradiated areas into poly(acetylene). The resultant product has localized zones of modified electrical and optical properties which are useful in the semiconductor industries and in optical devices.

Process of producing poly(acetylene) films having localized zones of a

Poly(acetylene) films having localized zones of a low conductivity

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Feltham, United Kingdom

Philip Charles Allen