Electrochemical nanofilm processor as self-writing and time indicating smart label

Abstract

The electrochemical nanofilm processor is a smart system based on the lateral anodic oxidation of a nanoscale aluminum film. The electrochemical nanofilm processor is directly related to nominal electrolyte flows of femtoliter volumes per second which determines the electrochemical reaction. The oxidation velocity in the electrochemical nanofilm processor depends on the ambient relative humidity and temperature. In this paper we provide a deeper investigation of the oxidation behavior dependent to the ambient relative humidity and temperature. Therefore we present a new method for controlling the oxidation velocity of the electrochemical nanofilm processor in variable environmental conditions. With this approach we provide the basic principle for an exclusively time-dependent electrochemical nanofilm processor, which is suitable as a self-writing smart label time indicator.