Research + Discoveries

Shape Matters for Printed Electronics

The high temperatures (>200 °C) required to melt silver nanoparticle inks together to make conductive lines has limited the development of printed electronic devices, such as RFID tags, on low-cost, heat-sensitive paper and plastic substrates.  By comparing the resistivity of films made from silver nanostructures with different shapes, the Wiley lab has shown that films of silver nanowires are 4000 times more conductive than the conventionally used silver nanoparticles after drying. In fact, films of silver nanowires are dried at 70 °C are more conductive than films of silver nanoparticles melted at 300 °C. Thus silver nanowires can enable the printing of highly conductive traces on low-cost, heat-sensitive substrates.  Read more on this on Duke Today.