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We have developed a simple method for fabricating robust and low noise glass nanopore electrodes with pore size 10±5 nm to detect single molecules.β-Cyclodextrin was used as model compound for characterization.In 1.0 mol/L NaCl solution,the molecules generated current pulses of 2-5 pA with noise level less than 0.8 pA.A slide mode and a plug mode were suggested for the way ofβ-cyclodextrin single molecule moving into the glass nanopores.
We have developed a simple method for fabricating robust and low noise glass nanopore electrodes with pore size 10 ± 5 nm to detect single molecules. Β-Cyclodextrin was used as model compound for characterization.In 1.0 mol / L NaCl solution, the molecules generated current pulses of 2-5 pA with noise level less than 0.8 pA. A slide mode and a plug mode were suggested for the way of β-cyclodextrin single molecule moving into the glass nanopores.