Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 69, Issue 1-2, Pages 153-163Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/S0925-4005(00)00536-0
Keywords
enzyme immobilisation; thick-film biosensors; screen-printed biosensors; screen-printing ink; screen-printing paste
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Different thick-film biosensor configurations designed during the last decade are revised. These planar configurations are classified in three groups: (a) multiple-layer deposition (biological deposition by hand or electrochemically), (b) screen-printing of composite inks or pastes using two or more steps (biological deposition by screen-printing), (c) one-step deposition layer or biocomposite strategy. Different enzyme immobilisation procedures corresponding to these configurations are also revised. These procedures consist mainly of enzyme adsorption onto transducer surface, biological immobilisation by cross-linking in a glutaraldehyde layer, and physical, electro-or UV-polymerisation entrapment. Immobilisation into the bulk of different carbon-based inks or pastes is also presented. (C) 2000 Elsevier Science S.A. All rights reserved.
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