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Updated: Oct 23, 2025

3D Printing and In Situ Surface Modification via Type I Photoinitiated Reversible Addition-Fragmentation Chain Transfer Polymerization

3D Printing and In Situ Surface Modification via Type I Photoinitiated Reversible Addition-Fragmentation Chain Transfer Polymerization

Published on: February 18, 2022

3D printing fluorescent material with tunable optical properties.

Alberto J Ruiz^1,2, Sadhya Garg³, Samuel S Streeter³

¹Thayer School of Engineering, Dartmouth College, 14 Engineering Dr., Hanover, NH, 03755, USA. albertojruiz.ar@gmail.com.

Scientific Reports

|August 25, 2021

Summary

This summary is machine-generated.

Researchers developed a novel 3D printing method for fluorescent materials, enabling precise control over optical properties. This advancement supports the creation of advanced imaging technologies, including fluorescence-guided surgery systems.

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Area of Science:

Biomedical Optics
Materials Science
Additive Manufacturing

Background:

3D printing of fluorescent materials is crucial for developing advanced imaging technologies like fluorescence-guided surgery.
Existing methods lack comprehensive approaches for simultaneous fluorophore incorporation and optical property tuning.

Purpose of the Study:

To introduce a photopolymer-based 3D printing method for manufacturing fluorescent materials with tunable optical properties.
To demonstrate the simultaneous incorporation of various fluorophores and fine-tuning of absorption and scattering coefficients.

Main Methods:

Utilized a photopolymer-based 3D printing technique.
Incorporated individual fluorophores such as IR-125, quantum dots, methylene blue, and rhodamine 590.
Tuned absorption and reduced scattering coefficients to mimic mammalian soft tissue optical properties.

Main Results:

Achieved reasonably high fluorescence yields for printed individual fluorophores.
Demonstrated tuning of absorption coefficients (0.005-0.05 mm⁻¹) and reduced scattering coefficients (0.2-1.5 mm⁻¹).
Successfully fabricated complex geometric structures with feature sizes below 200 μm.

Conclusions:

The developed 3D printing method enables the creation of solid fluorescent structures with tailored optical properties.
This technology provides a foundation for manufacturing advanced materials for biomedical optics and fluorescence imaging.
Facilitates the broad adoption of rapid manufacturing in fluorescence imaging applications.