P2EC.10 - Electrochemical Bridging of Conducting Polymers at the Percolation Threshold for Highly Sensitive Chemiresistors
- 17th International Meeting on Chemical Sensors - IMCS 2018
2018-07-15 - 2018-07-19
- P-2 - Electrochemical Sensors
- K. Murugappan, B. Armitage, M. Lefferts, T. Jones, M. Castell - Department of Materials, University of Oxford, Oxford (United Kingdom)
- 720 - 720
Interdigitated Electrodes (IDEs) are electrodes where two opposing metal electrodes are deposited on an inert substrate with a ‘comb’ like structure. IDEs are increasingly being investigated for their use in electrochemical sensors especially in chemiresistors as they exhibit high sensitivity due to their favourable geometry. The fingers in the two combs are separated by a distance usually in the μm range. In this work a thin layer of gold is evaporated onto the IDEs and then annealed at high temperatures to form gold nano islands through the process of ‘dewetting’ thereby converting the micro gaps in between the fingers to nano gaps, which further improves their geometry...