Paper electronics have attracted researchers’ attention in recent years for its potential advantage of disposability, foldability, low density and low cost. In our previous studies, we have shown a drastically different approach by a direct-write laser patterning process on paper to realize various basic device applications, such as a foldable triboelectricity generator and a folded supercapacitor as the potential paper-based power source for paper electronics, a wireless humidity sensor, and a heavy metal ion detector as working components. Here, we expand the application to dual-directional strain sensor and an ultra-sensitive acoustic sensor. Innovative claims are: proposing and utilizing (1) a plane microstructure which realizes the ability to detect and distinguishing dual-directional strain (2) a vertical microstructure which realizing the acoustic detection with high sensitivity; and (3) achieving customizability for different design purpose, environmental stability and easy disposability with a simple fabrication method.
Project end date: 01/26/20