- Journal
- JOURNAL OF PHYSICAL CHEMISTRY C
- Année
- 2013
- Volume
- 117
- Numéro
- 29
- Pages
- 15306-15315
- Mois
- JUL 25
- DOI
- 10.1021/jp403330d
Abstract
The confinement and the understanding of ion transport through ionic channels when they are confined inside solid-state nanopores smaller than 10 nm remains a challenge. Here we report on the fabrication of biomimetic nanopores with high length (5 mu m)/diameter (smaller than 10 nm) ratio obtained using both a track-etched technique and atomic layer deposition on flexible membranes. These membranes present uniform hydrophobic nanopores with a low roughness inside the pores. Gramicidin A is then confined inside nanopores (diameter 10.6, 5.7, and similar to 2 nm) leading to the NaCl ionic transport mechanism through a hybrid nanopore similar to the biological ones especially for small diameter (5.7 and similar to 2 nm).