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Manufacturing of Three-dimensionally Microstructured Nanocomposites through Microfluidic Infiltration

Manufacturing of Three-dimensionally Microstructured Nanocomposites through Microfluidic Infiltration

Published on: March 12, 2014

Injection continuous liquid interface production of 3D objects.

Gabriel Lipkowitz¹, Tim Samuelsen¹, Kaiwen Hsiao²

¹Department of Mechanical Engineering, Stanford University, Stanford, CA 94305, USA.

Science Advances

|September 28, 2022

Summary

This summary is machine-generated.

Injection continuous liquid interface production (iCLIP) enhances 3D printing by enabling faster speeds and higher viscosity resins. This novel method allows for simultaneous printing of multiple resins, creating complex heterogeneous objects.

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Area of Science:

Materials Science
Mechanical Engineering
Chemical Engineering

Background:

Additive manufacturing requires faster print speeds, higher viscosity resins, and simultaneous multi-resin printing.
Existing methods like continuous liquid interface production (CLIP) have limitations in speed, resin viscosity, and material patterning.

Purpose of the Study:

To introduce and characterize a novel ultraviolet-based photopolymerization 3D printing process.
To demonstrate the capabilities of injection continuous liquid interface production (iCLIP) for advanced additive manufacturing.

Main Methods:

Development of a 3D printing process utilizing a continuous liquid interface ('dead zone') fed by microfluidic channels.
Mechanical feeding of resin at elevated pressures through dynamically created microfluidic channels integral to the part.
Characterization of process parameters governing the iCLIP method.

Main Results:

Achieved 5- to 10-fold acceleration in printing speeds compared to CLIP.
Enabled the use of resins an order of magnitude more viscous than those compatible with CLIP.
Demonstrated simultaneous patterning of different resins in all Cartesian coordinates for heterogeneous objects.

Conclusions:

iCLIP offers significant advancements in 3D printing speed, material compatibility, and multi-material fabrication.
The process is suitable for printing complex composites, multimaterial features, and tunable lattices with controlled properties.