Synthesis of bimodal silver nanoparticles for inkjet-printed flexible electronics with excellent stretchability

Wearable sensors have attracted great attention over the past decade due to the potential application in personalized medicine. Bimodal silver nanoparticles (AgNPs) have been used in printed flexible electronics in some studies. In the study, we synthesized a range of AgNPs via controlling experimental parameters. A conductive ink with high stability was formulated by mixing two kinds of AgNPs (20 and 100 nm in diameter). The fine patterns of electric circuit were printed on the desired areas of nitrile gloves. The electric circuits have an excellent stretchability and the change in electric resistance of electric circuits can be detected when finger bending.