Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance work on Wednesday 22nd May 2019 from 11:00 AM to 1:00 PM (GMT).

During this time our website performance may be temporarily affected. We apologise for any inconvenience this might cause and thank you for your patience.

Electrocoiling-guided printing of multiscale architectures at single-wavelength resolution

Author affiliations


The rope coiling observed in liquid ink with high viscosity has been exploited in additive printing to fabricate architectures with periodically curled structures and tune their mechanical properties. However, the control over the coiling path relying on mechanical motion restricts the spatiotemporal resolution. We develop an electrically assisted high-resolution technique to manipulate coiling paths of viscous ink and structures of the deposited filament. By spatially programming the voltage applied onto the viscous ink, we show that the switching between different filament structures can be accomplished at single wavelength resolution, facilitating the rapid and accurate construction of sophisticated patterns. Furthermore, translational guiding of the electrocoiling enables rapid printing of filaments with complex structures at a line speed of 102 mm sāˆ’1. With a simplified trajectory of the printing head, large-area and multiscale patterns can be printed at an unprecedented speed; for instance, centimeter-sized architectures constructed from nanofibers with micron-sized curled structures can be completed in a few minutes. By enabling the printing of complex fiber networks with tunable shape and density, our work provides a route towards custom-design of fiber architectures with unique features such as spatially varying mechanical properties.

Graphical abstract: Electrocoiling-guided printing of multiscale architectures at single-wavelength resolution

Back to tab navigation

Supplementary files

Publication details

The article was received on 13 Feb 2019, accepted on 12 Apr 2019 and first published on 16 Apr 2019

Article type: Paper
DOI: 10.1039/C9LC00145J
Lab Chip, 2019, Advance Article

  •   Request permissions

    Electrocoiling-guided printing of multiscale architectures at single-wavelength resolution

    J. Li, T. Kong, J. Yu, K. H. Lee, Y. H. Tang, K. Kwok, J. T. Kim and H. C. Shum, Lab Chip, 2019, Advance Article , DOI: 10.1039/C9LC00145J

Search articles by author