Imbibition dynamics of nano-particulate ink-jet drops on micro-porous media
Hoath, S. D.
Martin, G. D.
Hutchings, I. M.
Chilton, N. B.
MetadataShow full item record
Hsiao, W., Hoath, S. D., Martin, G. D., Hutchings, I. M., Chilton, N. B., & Jones, S. (2011). Imbibition dynamics of nano-particulate ink-jet drops on micro-porous media.
Ink-jet printing of nano-metallic colloidal fluids on to porous media such as coated papers has become a viable method to produce conductive tracks for low-cost, disposable printed electronic devices. However, the formation of well-defined and functional tracks on an absorbing surface is controlled by the drop imbibition dynamics in addition to the well-studied post-impact drop spreading behavior. This study represents the first investigation of the realtime imbibition of ink-jet deposited nano-Cu colloid drops on to coated paper substrates. In addition, the same ink was deposited on to a non-porous polymer surface as a control substrate. By using high-speed video imaging to capture the deposition of ink-jet drops, the time-scales of drop spreading and imbibition were quantified and compared with model predictions. The influences of the coating pore size on the bulk absorption rate and nano-Cu particle distribution have also been studied.
nano-copper colloid, imbibition, high-speed, imaging, drop deposition, ink-jet
This record's URL: http://www.dspace.cam.ac.uk/handle/1810/240700