Abstract
Ion current rectification with quartz nanopipette electrodes was investigated through the control of the surface charge. The presence and absence of a positively charged poly-L-lysine (PLL) coating resulted in the rectified current with opposite polarity. The results agreed with the theories developed for current-rectifying conical nanopores, suggesting the similar underlying mechanism among asymmetric nanostructure in general. This surface condition dependence can be used as the fundamental principle of multi-purpose real-time in vivo biosensors.
Original language | English |
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Pages (from-to) | 2486-2492 |
Number of pages | 7 |
Journal | Nano Letters |
Volume | 6 |
Issue number | 11 |
DOIs | |
Publication status | Published - 2006 Nov |
Externally published | Yes |
ASJC Scopus subject areas
- Bioengineering
- Chemistry(all)
- Materials Science(all)
- Condensed Matter Physics
- Mechanical Engineering