Effect of butanol and salt concentration on solid-state nanopores resistance

M. Vega, M. S. Perez, P. Granell, F. Golmar, C. Wloka, G. Maglia, M. J. Dieguez, E. M. Del Valle, C. Lasorsa, B. Lerner*

*Corresponding author for this work

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Abstract

The objective of this study was to demonstrate the possibility of using 1-butanol to reliably detect the open-pore current of pyramidal solid-state nanopores produced in silicon wafers. The nanopores were produced through controlled pore formation by neutralizing an etchant (KOH) with a strong acid (HCl). Since nanopores produced by this method are deeper than those made in nanometer-thick membranes, they behave as nanochannels. As a consequence, the open-pore current detection is more challenging. Thus, we report that low amounts of butanol considerably aid in the detection of the open-pore current of nanopores.

Original languageEnglish
Article number1225345
Number of pages9
JournalCogent chemistry
Volume2
DOIs
Publication statusPublished - 2016

Keywords

  • solid-state nanopores
  • silicon wafer
  • resistance
  • butanol
  • DNA TRANSLOCATION
  • FABRICATION
  • DEPENDENCE
  • TRANSPORT
  • CHANNELS
  • LOCATION
  • PROTEIN

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