Origins of Charge Noise in Carbon Nanotube Field-Effect Transistor Biosensors
作者： Tal Sharf , Joshua W. Kevek , Tristan DeBorde , Jenna L. Wardini , Ethan D. Minot
DOI: 10.1021/NL303651T
关键词:
摘要: Determining the major noise sources in nanoscale field-effect transistor (nanoFET) biosensors is critical for improving bioelectronic interfaces. We use carbon nanotube (CNT) FET biosensor platform to examine generated by substrate interactions and surface adsorbates, both of which are present current nanoFET biosensors. The charge model used as a quantitative framework show that insulating substrates adsorbates significant contributors floor CNT Removing reduces power spectral density background voltage fluctuations 19-fold.
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