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Plant-inspired pipettes.

Keigo Nakamura1, Tetsuya Hisanaga2, Koichi Fujimoto3

  • 1Department of Physics, Ritsumeikan University, Kusatsu, Shiga 525-8577, Japan.

Journal of the Royal Society, Interface
|March 16, 2018
PubMed
Summary
This summary is machine-generated.

Researchers developed a 3D-printed, parasol-like device inspired by liverworts to efficiently capture and transport water droplets. This bio-inspired innovation offers a new tool for liquid handling in labs and soft robotics.

Keywords:
capillarityfree surface flowliverwortwater-grabbing

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Area of Science:

  • Biomimicry and Soft Robotics
  • Fluid Dynamics and Wetting Phenomena
  • Plant Reproduction Mechanisms

Background:

  • The female sex organ of the liverwort *Marchantia polymorpha* exhibits a unique parasol-like structure.
  • This structure is evolutionarily adapted for efficient collection of sperm-containing water droplets for fertilization.
  • Understanding this biological mechanism can inspire novel technological applications.

Purpose of the Study:

  • To engineer a rigid, parasol-like object using 3D printing technology.
  • To investigate the liquid droplet capture, transport, and release capabilities of this bio-inspired design.
  • To explore the potential applications in laboratory settings and soft robotics.

Main Methods:

  • Fabrication of a rigid, parasol-shaped object using 3D printing.
  • Experimental quantification of wetting and fluid dynamical properties.
  • Development of a stability phase diagram for liquid droplet manipulation.
  • Application of scaling theory to understand fundamental principles.

Main Results:

  • The developed object successfully grabs, transports, and releases water droplets up to 1 cm.
  • The device's performance is largely insensitive to variations in liquid surface tension and viscosity.
  • A stability phase diagram was constructed, revealing key operational boundaries.
  • Optimal design criteria for enhanced pipetting performance were identified.

Conclusions:

  • The study provides fundamental design rules for a bubble-free liquid handling device.
  • The liverwort-inspired pipette has potential applications in laboratory liquid manipulation and soft robotics.
  • Scalable model experiments offer insights into the reproductive advantage of the liverwort's natural structure.