Abstract
Nanoscale 3D printing can be achieved by femtosecond laser-triggered two-photon polymerization. Hydrogels that mimic the native extracellular matrix (ECM) environment are one of the most promising materials in cell biology and tissue engineering. It has been demonstrated that hydrogels’ 3D geometrical cues have a strong influence on cell behaviors. Natural cellular environment has complex 3D structure in micro- and nanoscale. Thus it is important to create hydrogels with micro- and nanoscale features to mimic the natural environment. Two-photon polymerization-based 3D printing technique enables fabrication of sub-micron resolution hydrogel structures. The design and fabrication of 3D hydrogels for tissue engineering and drug delivery has been an important research area of TPP fabrication. This chapter reviews the basics of this technique and some of its biomedical applications.
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Acknowledgments
The work was supported in part by grants from the National Institutes of Health (R01EB021857, R33HD090662) and National Science Foundation (1937653, 1903933).
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Li, J., You, S., Chen, S. (2021). Femtosecond Laser-Assisted Nanoscale 3D Printing of Hydrogels. In: Sugioka, K. (eds) Handbook of Laser Micro- and Nano-Engineering. Springer, Cham. https://doi.org/10.1007/978-3-319-69537-2_43-1
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