Authors: Xiang Wang Lei Xu GaoFeng Zheng Wei Cheng DaoHeng Sun
Publish Date: 2012/04/03
Volume: 55, Issue: 6, Pages: 1603-1607
Abstract
Pulsed electrohydrodynamic printing EHDP is used to fabricate conductive silver patterns with micrometer resolution The silver ink pendant experiences swelling pulsation and ejection under an applied pulse voltage of 20 Hz The droplet deposition frequency is equal to the applied voltage frequency so that the EHDP can deposit silver ink on demand A low applied voltage favors uniform and nonscattering silver patterns while a high applied voltage results in ink scattering Discrete droplets with 45–55 μm in diameter and continuous tracks with 60 μm in width are generated by using a 110μmcailber nozzle The feature size of deposited patterns is about half of the nozzle caliber and a finer resolution can be achieved with the introduction of smaller nozzle calibers Furthermore the appropriate curing condition is investigated for sufficient combustion of ink solvent The minimum resistivity of 33 μΩ cm is demonstrated for a continuous track cured at 200°C for 10 min Eventually several passive electrical components such as coated resistors interdigitated capacitors 6 pF and spiral inductors 06 μH are successfully fabricated
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