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

M PEREZ; M VEGA; P GRANELL; F GOLMAR; G MAGLIA; M J DIEGUEZ; E M DEL VALLE; C. LASORSA; B LERNER

Cogent Chemistry

Taylor & Francis Group

Año: 2016 vol. 2

2331-2009

The objective of this study was to demonstrate the possibility of using 1-butanol to detect in a reliable way 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 have a larger depth 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.