Element Six Technologies Limited

The University of Warwick

Other

Element Six Gmbh

Julie Victoria MacPherson

Mark Edward Newton

Patrick Robert Unwin

Geoffrey Alan Scarsbrook

Andrew John Whitehead

William Joseph Yost, Iii

Timothy Peter Mollart

Matthew Lee Markham

Joseph Michael Dodson

Laura Anne Hutton

Joshua James Tully

Zoe Joanna Ayres

Samuel James Cobb

Nicola Louise Palmer

Eleni Bitziou

Roy Edward Patrick Meyler

Maxim Bruckshaw Joseph

Zoe Ayres

A method for forming a diamond product. Diamond material is provided and a damage layer comprising spbonded carbon is formed in the material. The presence of the damage layer defines a first diamond layer above and in contact with the damage layer and a second diamond layer below and in contact with the damage layer. The damage layer is electrochemically etched to separate it from the first layer, wherein the electrochemical etching is performed in a solution containing ions, the solution having an electrical conductivity of at least 500 μS cm, and wherein the ions are capable of forming radicals during electrolysis. The diamond product is also described.

Method for forming diamond product

An electrochemical sensor comprising a boron doped diamond electrode formed of boron doped diamond material, an array of non-diamond carbon sites disposed on a sensing surface of the boron doped diamond electrode, electrochemically active non-diamond carbon surface groups bonded to the non-diamond carbon sites for generating a first redox peak at a first potential associated with dissolved oxygen and a second redox peak at a second potential which changes with pH, the first and second redox peaks being separated such that they do not overlap, an electrical controller configured to scan the boron doped diamond electrode over a potential range to generate at least said first redox peak, and a processor configured to give an electrochemical reading based on one or both of a position and an intensity of said first redox peak.

Diamond based electrochemical sensors

A boron doped synthetic diamond material which has the following characteristics: a solvent window meeting one or both of the following criteria as measured by sweeping a potential of the boron doped synthetic diamond material with respect to a saturated calomel reference electrode in a solution containing only deionized water and 0.1M KNOas a supporting electrolyte at pH 6: the solvent window extends over a potential range of at least 4.1 V wherein end points of the potential range for the solvent window are defined when anodic and cathodic current density measured at the boron doped synthetic diamond material reaches 38 mA cm; and the solvent window extends over a potential range of at least 3.3 V wherein end points of the potential range for the solvent window are defined when anodic and cathodic current density measured at the boron doped synthetic diamond material reaches 0.4 mA cm; a peak-to-peak separation &#x394;Ep (for a macroelectrode) or a quartile potential &#x394;E(for a microelectrode) of no more than 70 mV as measured by sweeping a potential of the boron doped synthetic diamond material at a rate of 100 mV swith respect to a saturated calomel reference electrode in a solution containing only deionized water, 0.1M KNO3 supporting electrolyte, and 1 mM of FcTMAor Ru(NH)6at pH 6; and a capacitance of no more than 10 &#x3bc;F cmas measured by sweeping a potential of the boron doped synthetic diamond material with respect to a saturated calomel reference electrode between 70 mV and &#x2212;70 mV in a solution containing only deionized water and 0.1M KNOsupporting electrolyte at pH 6, measuring resultant current, subtracting a current value at 0 V when sweeping towards negative potentials from a current value at 0 V when sweeping towards positive potentials, dividing the subtracted current value by 2, and then dividing the result by an area (cm) of the boron doped synthetic diamond material and by a rate at which the potential is swept (Vs) to give a value for capacitance in F cm.

Synthetic diamond materials for electrochemical sensing applications

Microelectrode comprising a body formed from electrically non-conducting material and including at least one region of electrically conducting material and at least one passage extending through the body of non-conducting material and the region of conducting material, the electrically conducting region presenting an area of electrically conducting material to a fluid flowing through the passage in use. An electrochemical cell which includes such a microelectrode is also disclosed.

Microelectrode array

The invention relates to electrodes for electrochemical analysis comprising: &#x2014;an insulating surface; &#x2014;carbon nanotubes situated on the insulating surface at a density of at least 0.1 &#x3bc;mUm; and &#x2014;an electrically conducting material in electrical contact with the carbon nanotubes; wherein the carbon nanotubes cover an area of no more than about 5.0% of the insulating surface. Methods of making such electrodes and assay devices or kits with such electrodes, are also provided.

Nanotube electrochemistry

Growing community of inventors

Coventry, United Kingdom

Julie Victoria MacPherson