Please use this identifier to cite or link to this item:
|Title:||Micro-spike EEG electrode and the vacuum-casting technology for mass production||Authors:||Ng, W.C.
|Issue Date:||1-May-2009||Citation:||Ng, W.C., Seet, H.L., Lee, K.S., Ning, N., Tai, W.X., Sutedja, M., Fuh, J.Y.H., Li, X.P. (2009-05-01). Micro-spike EEG electrode and the vacuum-casting technology for mass production. Journal of Materials Processing Technology 209 (9) : 4434-4438. ScholarBank@NUS Repository. https://doi.org/10.1016/j.jmatprotec.2008.10.051||Abstract:||An innovative dry electroencephalography (EEG) electrode has been successfully designed and tested, in which multiple micro-spike electrodes, each of them consisting of a micro-pillar with a micro-tip on top of it, were designed to pass through the hairs and establish electrical conduction at the skin-electrode interface by penetrate into the stratum corneum of the skin. For hygiene reasons, such electrodes should be made disposable, at the same time, should be cost effective. Therefore, a mass production technology, including the processing methods, such as casting, has to be designed and developed. In this project, the micro-spike dry electrodes were fabricated by a vacuum casting method using a master pattern piece made by CNC micro-machining, in which silicone rubber moulds are created and then used to vacuum cast polyurethane (PU), epoxy or epoxy-carbon micro-spike electrodes. In order to obtain a harder polymeric material, varying amount of carbon fillers were added to the epoxy resin, and the hardness of the resulting material were measured and compared. It was found that a higher concentration of added carbon fillers resulted in a harder cast polymer composite. Further to the vacuum casting, to create an electrically conductive layer on the vacuum-casted electrode, an Ag/AgCl electroless deposition method has been developed. The sputtering of the conductive layer was also carried out for comparison. The developed micro-spike electrodes showed better performance in terms of the impedance level and stability as well as a much higher efficiency in EEG measurement. © 2008 Elsevier B.V. All rights reserved.||Source Title:||Journal of Materials Processing Technology||URI:||http://scholarbank.nus.edu.sg/handle/10635/60756||ISSN:||09240136||DOI:||10.1016/j.jmatprotec.2008.10.051|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Jul 28, 2020
WEB OF SCIENCETM
checked on Jul 28, 2020
checked on Aug 3, 2020
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.