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Updated: May 15, 2025

Micro 3D Printing Using a Digital Projector and its Application in the Study of Soft Materials Mechanics

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Published on: November 27, 2012

Multi-material Gradient Printing Using Meniscus-enabled Projection Stereolithography (MAPS).

Puskal Kunwar^1,2, Arun Poudel^1,2, Ujjwal Aryal^1,2

¹Syracuse University, Biomedical, and Chemical Engineering Department, Syracuse, New York, 13210, USA.

Advanced Materials Technologies

|April 11, 2025

Summary

This summary is machine-generated.

A new vat-free 3D printing method, Meniscus-enabled Projection Stereolithography (MAPS), enables waste-free, multi-material printing. This innovation allows for precise control over material properties in complex structures for diverse applications.

Keywords:

bioprinting digital light processing gradient printing meniscus multi-material printing nano-material printing

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Last Updated: May 15, 2025

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Area of Science:

Additive Manufacturing
Materials Science
Biotechnology

Background:

Light-based additive manufacturing offers high resolution for tissue engineering, soft robotics, photonics, and microfluidics.
Existing methods face challenges in multi-material printing, including hardware complexity, waste generation, and cross-contamination.

Purpose of the Study:

To introduce a novel vat-free multi-material 3D printing platform: Meniscus-enabled Projection Stereolithography (MAPS).
To demonstrate MAPS's capability for waste-free printing of complex, multi-material 3D structures with user-defined material gradients.

Main Methods:

MAPS utilizes a resin meniscus generated between a crosslinked structure and a bottom window.
This method is vat-free and does not require specialized hardware, software, or complex post-processing.
Compatibility with a wide range of resins was assessed.

Main Results:

MAPS successfully printed lateral, vertical, discrete, and gradient multi-material 3D structures without waste.
The platform demonstrated microscale control over mechanical stiffness, opacity, surface energy, cell densities, and magnetic properties.
MAPS is compatible with diverse resins and various applications.

Conclusions:

MAPS offers a versatile and efficient solution for multi-material 3D printing.
This technology facilitates the creation of advanced materials with tailored properties for broad applications.
MAPS overcomes limitations of existing light-based additive manufacturing techniques.