Compound semiconductor/isolator (ZnS/silica) core/shell nanocables have been used to fabricate single nanowire-based field effect transistors. Using the surface-adsorbed charged molecules as the gate, the nanocable-based devices show potential for label-free, real-time, and sensitive detection of biological species. After chemical modification, amine- and oxide-functionalized nanocables exhibit linear pH-dependent conductance, which could be elucidated in terms of the changes of surface charge during protonation and deprotonation. Selective biological recognition of nanocable sensors has been demonstrated using biotinylation.
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Physical and Theoretical Chemistry
- Surfaces, Coatings and Films