Experimentally observed flows in inkjet-printed liquid rivulets

Abstract eng:
Inkjet printing technology has shown significant potential for the versatile and low-cost fabrication of micro-scale functional patterns that span applications from microelectronics to bio-engineering. Although theoretical and experimental investigations addressing the stability criteria and morphological evolution of rivulets have been discussed in literature, the transport phenomena within rivulets of dispersions or solutions have received little attention. Comprehensive study of transport in drops has firmly established the first-order role of transport process in determining the final deposition structure and functionality. This study focuses on the significantly more complex hierarchical structure in printing, the rivulet, and the corresponding role of transport on its final deposition structure and fimctionality. We elucidate the roles of capillary pressure and evaporation on the transport process in rivulets, the influence of liquid ink-substrate interaction

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