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1. (WO2018106128) APPARATUS AND METHODS FOR CONTROLLED ELECTROCHEMICAL SURFACE MODIFICATION

Pub. No.:    WO/2018/106128    International Application No.:    PCT/NZ2017/050160
Publication Date: Fri Jun 15 01:59:59 CEST 2018 International Filing Date: Tue Dec 12 00:59:59 CET 2017
IPC: C25D 5/02
H01M 4/02
G01N 27/30
B01J 37/34
Applicants: MANUFACTURING SYSTEMS LIMITED
Inventors: HOSSEINI, Ali
PARTRIDGE, Ashton
Title: APPARATUS AND METHODS FOR CONTROLLED ELECTROCHEMICAL SURFACE MODIFICATION
Abstract:
The invention is directed to a method of focussing charge density (voltage or current) at a functional surface on an electrode array, the method comprising the steps of: a. providing an electrode array comprising: i. a support substrate; ii. at least one surface structure protruding from an upper surface of the support substrate wherein the surface structure includes an electrode layer; iii. a functional surface on the electrode layer, wherein the functional surface is on an upper portion of the at least one surface structure and wherein the functional surface is adapted to contact an active species in a conductive solution; b. exposing the surface structure to the conductive solution comprising an active species, in which a counter electrode is positioned; and c. establishing a current or voltage between the functional surface on the electrode layer and the counter electrode such that the charge density is focussed at the functional surface on the electrode layer. The invention is also directed to electrode arrays that may be used in that method.