View : 637 Download: 0
Dense Array of Nanoparticles as a Large-Area Nanoelectrode for Sensors: An Oxymoron Mesomaterial?
- Title
- Dense Array of Nanoparticles as a Large-Area Nanoelectrode for Sensors: An Oxymoron Mesomaterial?
- Authors
- Lee S.-W.; Lee E.-H.; Saraf R.F.
- Ewha Authors
- 이은희
- SCOPUS Author ID
- 이은희
- Issue Date
- 2014
- Journal Title
- ChemElectroChem
- ISSN
- 2196-0216
- Citation
- ChemElectroChem vol. 1, no. 8, pp. 1281 - 1286
- Keywords
- Conducting array; Gold; Nanoparticles; Soft lithography; Ultramicroelectrode
- Publisher
- Wiley-VCH Verlag
- Indexed
- SCIE; SCOPUS
- Document Type
- Article
- Abstract
- Compared to redox reactions at large electrodes, those at nanoscale electrodes are controlled by kinetics rather than diffusion, thus resulting in responses that are orders of magnitude faster at higher sensitivity. To avoid interference by diffusion-flux domains of adjacent particles, for monolayers of nanoparticles as individual electrodes, the area coverage should be below approximately 10%, which is well below the percolation threshold of 45%. Conducting monolayer arrays consisting of a network of one-dimensional necklaces of 10nm Au particles with 54 to 26% area coverage are shown to behave like ultramicroelectrodes and nanoelectrode ensembles (NEEs). The reconciliation of the two opposing requirements of high and low coverage for percolation and NEE behavior, respectively, is attributed to the necklace-network topology. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
- DOI
- 10.1002/celc.201402146
- Appears in Collections:
- 공과대학 > 환경공학과 > Journal papers
- Files in This Item:
There are no files associated with this item.
- Export
- RIS (EndNote)
- XLS (Excel)
- XML