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Characterisation of nano-interdigitated electrodes

Skjolding, Lars Henrik LU ; Spegel, Christer LU ; Ribayrol, Aline LU ; Emnéus, Jenny LU and Montelius, Lars LU (2008) 17th International Vacuum Congress/13th International Conference on Surface Science/Internatinal Conference on Nanoscience and Technology In Journal of Physics: Conference Series 100. p.052045-052045
Abstract
Interdigitated electrodes made up of two individually addressable interdigitated comb-like electrode structures have frequently been suggested as ultra sensitive electrochemical biosensors. Since the signal enhancement effects due to cycling of the reduced and oxidized species are strongly dependent on the inter electrode distances, since the nature of the enhancement is due to overlying diffusion layers, inter digitated electrodes with an electrode separation of less the non emicrometer a redesired for maximum signal amplification. Fabrication of submicron structures can only be made by advanced lithography techniques. By use of electron be amlithography we have fabricated arrays of interdigitated electrodes with an electrode separation... (More)
Interdigitated electrodes made up of two individually addressable interdigitated comb-like electrode structures have frequently been suggested as ultra sensitive electrochemical biosensors. Since the signal enhancement effects due to cycling of the reduced and oxidized species are strongly dependent on the inter electrode distances, since the nature of the enhancement is due to overlying diffusion layers, inter digitated electrodes with an electrode separation of less the non emicrometer a redesired for maximum signal amplification. Fabrication of submicron structures can only be made by advanced lithography techniques. By use of electron be amlithography we have fabricated arrays of interdigitated electrodes with an electrode separation distance of 200nm and an electrode finger width of likewise 200nm. The entire electrode structure is 100 micrometre times 100 micrometre, and the active electrode area is dictated by the opening in the passivation layer, that is defined by UV lithography. Here we report measurements of redox cycling of ferrocyanide by coupled cyclic voltammograms, where the potential atone of the working electrodes are varied and either an oxidising or reducing potential is applied to the complimentary interdigitated electrode. The measurements show fast conversion and high collection efficiency round 87% as expected for nano-interdigitated electrodes. (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
Journal of Physics: Conference Series
volume
100
pages
052045 - 052045
publisher
IOP Publishing
conference name
17th International Vacuum Congress/13th International Conference on Surface Science/Internatinal Conference on Nanoscience and Technology
external identifiers
  • wos:000275655200141
  • scopus:60549093378
ISSN
1742-6596
1742-6588
DOI
10.1088/1742-6596/100/5/052045
language
English
LU publication?
yes
id
dcfaf5a5-a6b9-48d3-b26b-a2e1e1976c12 (old id 1586318)
date added to LUP
2010-04-28 09:12:41
date last changed
2017-08-13 03:46:58
@inproceedings{dcfaf5a5-a6b9-48d3-b26b-a2e1e1976c12,
  abstract     = {Interdigitated electrodes made up of two individually addressable interdigitated comb-like electrode structures have frequently been suggested as ultra sensitive electrochemical biosensors. Since the signal enhancement effects due to cycling of the reduced and oxidized species are strongly dependent on the inter electrode distances, since the nature of the enhancement is due to overlying diffusion layers, inter digitated electrodes with an electrode separation of less the non emicrometer a redesired for maximum signal amplification. Fabrication of submicron structures can only be made by advanced lithography techniques. By use of electron be amlithography we have fabricated arrays of interdigitated electrodes with an electrode separation distance of 200nm and an electrode finger width of likewise 200nm. The entire electrode structure is 100 micrometre times 100 micrometre, and the active electrode area is dictated by the opening in the passivation layer, that is defined by UV lithography. Here we report measurements of redox cycling of ferrocyanide by coupled cyclic voltammograms, where the potential atone of the working electrodes are varied and either an oxidising or reducing potential is applied to the complimentary interdigitated electrode. The measurements show fast conversion and high collection efficiency round 87% as expected for nano-interdigitated electrodes.},
  author       = {Skjolding, Lars Henrik and Spegel, Christer and Ribayrol, Aline and Emnéus, Jenny and Montelius, Lars},
  booktitle    = {Journal of Physics: Conference Series},
  issn         = {1742-6596},
  language     = {eng},
  pages        = {052045--052045},
  publisher    = {IOP Publishing},
  title        = {Characterisation of nano-interdigitated electrodes},
  url          = {http://dx.doi.org/10.1088/1742-6596/100/5/052045},
  volume       = {100},
  year         = {2008},
}