Capacitance variation of inkjet printed interdigital capacitor by structure bending

Abstract

© 2016 IEEE. This paper presents the capacitance change of interdigital capacitor (IDC) by bending test structure (substrate with capacitor). Interdigital capacitor is fabricated in inkjet printing technology with nanoparticle silver ink on a flexible polyimide foil. First set of tests were done by bending printed interdigital capacitor around axis that is parallel to the capacitors electrodes and around axis that is normal to the capacitors electrodes. Capacitances were measured by impedance analyzer HP 4194A and it was concluded that there is a decrease in capacitance value. Second test of capacitance measurement was done for multiple repeatedly-structure bending (up to one thousand time) and results are presented and analyzed.