Inkjet Research Centre: PhD Projects
Research Interests Sung June Jung, PhD Student
- Imaging and characterisation of inkjet drop impact for OLED production process Ink-jet printing has been used for the production of high quality plastic electronic devices, including both organic LED displays and organic TFT backplanes, because of its ability to accurately control the placement of the organic materials on the substrate. This project aims to achieve a complete understanding of the mechanics of the liquid drop impact process and of fluid/substrate interaction in the context of industrial inkjet printing of Organic LEDs. (Supported by Cambridge Display Technology)
- Atomisation produced by the oblique collision of two liquid jets The oblique collision of two identical jets leads to the liquid broadening radially from the impact point, creating a thin oval sheet bounded by a thicker rim. We focus on the regime where the impinging jets form a liquid sheet which then breaks up into a regular succession of ligaments and droplets, the so-called 'fishbone' pattern. This research offers a detailed insight into the effects of different degrees of viscoelasticity on the formation, destabilisation and the atomisation of a liquid sheet by oblique non-Newtonian jet impact. It is suggested that a test based on oblique impinging jets may be useful in the development of fluids for inkjet printing.