Abstract
Conductive microneedle patches based on carbon nanoparticle composites in which cellulose acetate phthalate
(CAP) or polystyrene (PS) acted as a binder were investigated. The electrochemical properties of the composite system
were assessed using ferrocyanide as a redox probe and compared with screen printed carbon electrodes. Preliminary
investigations of biodegradability were conducted with the influence of soil interment assessed by electron microscopy.
While the PS microneedles exhibited no breakdown, the CAP systems were found to be substantially degraded after one
week with complete removal of the needle tips and, hence, piercing capability
(CAP) or polystyrene (PS) acted as a binder were investigated. The electrochemical properties of the composite system
were assessed using ferrocyanide as a redox probe and compared with screen printed carbon electrodes. Preliminary
investigations of biodegradability were conducted with the influence of soil interment assessed by electron microscopy.
While the PS microneedles exhibited no breakdown, the CAP systems were found to be substantially degraded after one
week with complete removal of the needle tips and, hence, piercing capability
Original language | English |
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Article number | 2000404 |
Pages (from-to) | 1-4 |
Number of pages | 4 |
Journal | IEEE Sensors Letters |
Volume | 7 |
Issue number | 3 |
Early online date | 15 Feb 2023 |
DOIs | |
Publication status | Published online - 15 Feb 2023 |
Bibliographical note
Funding Information:This work was supported by the Department for the Economy Northern Ireland.
Publisher Copyright:
© 2017 IEEE.
Keywords
- Electrical and Electronic Engineering
- Instrumentation
- microneedle
- electrode
- biodegradable
- composite
- sensor
- Sensor materials