期刊
ACS NANO
卷 7, 期 12, 页码 10931-10937出版社
AMER CHEMICAL SOC
DOI: 10.1021/nn404440v
关键词
single-molecule detection; electrochemistry; aqueous solution; nanofluidics; self-aligned; nanogap; redox cycling
类别
资金
- Netherlands Organization for Scientific Research (NWO)
- European Research Council (ERC)
Electrochemical detection of individual molecular tags in nanochannels may enable cost-effective, massively parallel analysis and diagnostics platforms. Here we demonstrate single-molecule detection of prototypical analytes in aqueous solution based on redox cycling in 40 nm nanogap transducers. These nanofluidic devices are fabricated using standard microfabrication techniques combined with a self-aligned approach that minimizes gap size and dead volume. We demonstrate the detection of three common redox mediators at physiological salt concentrations.
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