Abstract: The present invention relates to an electrode assembly (eg a nanoelectrode assembly), to an electrochemical glucose biosensor comprising the electrode assembly and to an apparatus for combating (eg management of) diabetes mellitus which comprises the electrochemical glucose biosensor.

Abstract: The present invention relates to an electrode assembly having a laminate structure comprising: a first insulating capping layer; a first conducting layer capped by the first insulating capping layer and substantially sandwiched by at least the first insulating capping layer such as to leave exposed only an electrical contact lip of the first conducting layer; and an array of etched voids extending through at least the first insulating capping layer and the first conducting layer, wherein each void is partly bound by a surface of the first conducting layer which acts as an internal submicron electrode.