An ultralow concentration of Pb ions is detected by a sensor integrating a peptide nanotube detection platform with a smart peptide function that specifically metalizes the target ion. As the PbII-binding peptide on the nanotube, which bridges two electrodes, templates Pb nanowires, a resistor appears in the circuit, and conductance is detected as the signal for PbII.
- Pb Ion detection
De La Rica, R., Mendoza, E., & Matsui, H. (2010). Bioinspired target-specific crystallization on peptide nanotubes for ultrasensitive Pb Ion detection. Small, 6(16), 1753–1756. https://doi.org/10.1002/smll.201000489