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Planar and Three-Dimensional Printing of Conductive Inks
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Up-and-down transformable embedded ink writing strategy for soft 3D architectures.

Yaxin Zhang1, Tianqi Pang1, Zixun Sun1

  • 1School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, People's Republic of China.

Nature Communications
|December 12, 2025
PubMed
Summary
This summary is machine-generated.

A new 3D printing method, transformable embedded ink writing (TEIW), enables rapid, autonomous self-assembly of 2D patterns into complex 3D soft material architectures without external intervention.

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Area of Science:

  • Materials Science
  • Robotics
  • Biotechnology

Background:

  • 3D soft material fabrication is crucial for soft robotics, wearable tech, and bioengineering.
  • Conventional embedded 3D printing faces challenges with material properties and nozzle limitations.

Purpose of the Study:

  • Introduce transformable embedded ink writing (TEIW) as a novel 3D printing strategy.
  • Overcome limitations of traditional embedded 3D printing methods.

Main Methods:

  • TEIW utilizes yield-stress inks in a fluid bath, leveraging gravitational-buoyancy forces for self-assembly.
  • Density contrasts, viscosity control, and mechanical coupling guide shape transformation.
  • 2D printed patterns autonomously assemble into predefined 3D structures.

Main Results:

  • TEIW bypasses rheological complexity and nozzle constraints of conventional methods.
  • Demonstrates compatibility with diverse materials like silicones, resins, and hydrogels.
  • Enables applications in microelectronics, perfusable networks, and secure devices.

Conclusions:

  • TEIW offers a versatile platform for advanced 3D soft material architectures.
  • Facilitates the creation of complex, multi-material structures with embedded intelligence.
  • Paves the way for next-generation systems requiring precise spatiotemporal control.