Element Six Technologies Limited

Element Six Gmbh

Other

Schlumberger Technology Corporation

Clive Edward Hall

Daniel James Twitchen

Geoffrey Alan Scarsbrook

Andrew John Whitehead

Herman Philip Godfried

Philip Maurice Martineau

Evert Pieter Houwman

Li Jiang

Wilhelmus Gertruda Maria Nelissen

Timothy Gareth John Jones

Neil Perkins

Charles Simon James Pickles

Richard Antonius Kleijhorst

Christopher John Howard Wort

Wilhemus Gertruda Maria Nelissen

Jaswinder Singh Gill

Wilhelmus Gertruda Nelissen

A CVD single crystal diamond material suitable for use in, or as, an optical device or element. It is suitable for use in a wide range of optical applications such as, for example, optical windows, laser windows, optical reflectors, optical refractors and gratings, and etalons. The CVD diamond material is produced by a CVD method in the presence of a controlled low level of nitrogen to control the development of crystal defects and thus achieve a diamond material having key characteristics for optical applications.

Optical quality diamond material

A microlectrode comprising a diamond layer formed from electrically non-conducting diamond and containing one or more pins or projections of electrically conducting diamond extending at least partially through the layer of non-conducting diamond presenting areas of electrically conducting diamond.

Diamond microelectrodes

A method and system is disclosed for monitoring one or more characteristics associated with a fluid. An insulating layer comprising non-conducting diamond is positioned within a housing and has a surface exposed directly or indirectly to the fluid. A plurality of microelectrodes made of electrically conducting diamond each have a surface exposed directly or indirectly to the fluid. An electrical circuit in electrical communication with each of the microelectrodes is adapted to convert electrical signals from the microelectrodes into at least one signal associated with a characteristic being monitored. The sensing system is well suited to hydrocarbon wellbore related applications, but can also be used in other applications.

System and method for sensing using diamond based microelectrodes

A microelectrode comprising a diamond layer formed from electrically non-conducting diamond and containing one or more pins or projections of electrically conducting diamond extending at least partially through the layer of non-conducting diamond and presenting areas of electrically conducting diamond.

A body of single crystal CVD (chemical vapour deposition) diamond particularly suitable as a wear resistant material for wear applications, such as wire drawing dies, graphical tools or stichels, or fluid jet nozzles. The diamond typically has a low wear rate, exhibits a low birefringence indicative of low strain and possesses an ability to be processed to show a high surface polish.

CVD diamond in wear applications

A fast heating cathode comprises a layer of diamond, a thermionic emitting element in thermal contact with a surface of the diamond layer and means to heat the diamond layer.

Fast heating cathode

Growing community of inventors

Nijmegen, Netherlands

Clive Edward Hall