Local wettability modification by thermochemical nanolithography with write-read-overwrite capability
Abstract
The wettability of a thin polymer film was modified twice by thermochemical nanolithography. By means of a first local chemical modification induced by an atomic force microscope tip heated to 110±20°C, hydrophilic patterns are written over an originally hydrophobic polymer surface. By further heating to 190±20°C, a second chemical modification reverses the local wettability change introduced by the first chemical modification. This write-read-overwrite capability can be particularly useful in the design of complex nanofluidic devices.
- Publication:
-
Applied Physics Letters
- Pub Date:
- December 2007
- DOI:
- 10.1063/1.2816401
- Bibcode:
- 2007ApPhL..91x3104W
- Keywords:
-
- 81.16.Nd;
- 68.37.Ps;
- 68.08.Bc;
- 68.55.-a;
- 61.41.+e;
- Nanolithography;
- Atomic force microscopy;
- Wetting;
- Thin film structure and morphology;
- Polymers elastomers and plastics