Current Rectification with Poly-l-Lysine-Coated Quartz Nanopipettes
- 5 October 2006
- journal article
- letter
- Published by American Chemical Society (ACS) in Nano Letters
- Vol. 6 (11) , 2486-2492
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.Keywords
This publication has 26 references indexed in Scilit:
- Ion‐Current Rectification in Nanopores and Nanotubes with Broken SymmetryAdvanced Functional Materials, 2006
- Two‐Component Graded Deposition of Biomolecules with a Double‐Barreled NanopipetteAngewandte Chemie International Edition, 2005
- DNA-Based Biosensor for Monitoring pH in Vitro and in Living CellsBiochemistry, 2005
- Electrostatic Control of Ions and Molecules in Nanofluidic TransistorsNano Letters, 2005
- Nanostructures in BiodiagnosticsChemical Reviews, 2005
- Single DNA Molecule Detection Using Nanopipettes and NanoparticlesNano Letters, 2005
- DNA−Nanotube Artificial Ion ChannelsJournal of the American Chemical Society, 2004
- Electrophoretic Capture and Detection of Nanoparticles at the Opening of a Membrane Pore Using Scanning Electrochemical MicroscopyAnalytical Chemistry, 2004
- A Simple Voltage Controlled Enzymatic Nanoreactor Produced in the Tip of a NanopipetNano Letters, 2004
- The Isoelectric Points of Solid Oxides, Solid Hydroxides, and Aqueous Hydroxo Complex SystemsChemical Reviews, 1965