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Drop impact printing

Author

Listed:
  • Chandantaru Dey Modak

    (Centre for Nano Science and Engineering, Indian Institute of Science)

  • Arvind Kumar

    (Centre for Nano Science and Engineering, Indian Institute of Science
    Australian Institute of Bioengineering and Nanotechnology, The University of Queensland)

  • Abinash Tripathy

    (Centre for Nano Science and Engineering, Indian Institute of Science
    ETH Zurich)

  • Prosenjit Sen

    (Centre for Nano Science and Engineering, Indian Institute of Science)

Abstract

Hydrodynamic collapse of a central air-cavity during the recoil phase of droplet impact on a superhydrophobic sieve leads to satellite-free generation of a single droplet through the sieve. Two modes of cavity formation and droplet ejection have been observed and explained. The volume of the generated droplet scales with the pore size. Based on this phenomenon, we propose a drop-on-demand printing technique. Despite significant advancements in inkjet technology, enhancement in mass-loading and particle-size have been limited due to clogging of the printhead nozzle. By replacing the nozzle with a sieve, we demonstrate printing of nanoparticle suspension with 71% mass-loading. Comparatively large particles of 20 μm diameter are dispensed in droplets of ~80 μm diameter. Printing is performed for surface tension as low as 32 mNm−1 and viscosity as high as 33 mPa∙s. In comparison to existing techniques, this way of printing is widely accessible as it is significantly simple and economical.

Suggested Citation

  • Chandantaru Dey Modak & Arvind Kumar & Abinash Tripathy & Prosenjit Sen, 2020. "Drop impact printing," Nature Communications, Nature, vol. 11(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-18103-6
    DOI: 10.1038/s41467-020-18103-6
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    Cited by:

    1. Rutvik Lathia & Satchit Nagpal & Chandantaru Dey Modak & Satyarthi Mishra & Deepak Sharma & Bheema Sankar Reddy & Pavan Nukala & Ramray Bhat & Prosenjit Sen, 2023. "Tunable encapsulation of sessile droplets with solid and liquid shells," Nature Communications, Nature, vol. 14(1), pages 1-14, December.

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