Chapter 5: Deposition Control of Inkjet-printed Drops
Published:01 Jun 2022
This chapter describes the transport processes in evaporation-driven self-assembly of micro/nanoparticles in inkjet-printed colloidal drops for materials printing applications. Capillary-driven, non-uniform particle deposition challenges the quality of printable electronics that often require uniform patterns to achieve high performance. Several approaches have been introduced to suppress the coffee-ring effect, by enhancing the capillary interactions among asymmetrically shaped particles, by controlling the particle size, wettability, and concentration, by balancing the carrier liquid removal rate, and among others. Using in situ high-speed imaging techniques, the CL dynamics and particle deposition morphology transitions during the colloidal drop deposition processes are revealed.