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19 April 2023 High-speed optical diffraction tomography for characterizing two-photon photopolymerization fabrication
Yanping He, Qi Shao, Shih-Chi Chen, Renjie Zhou
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Proceedings Volume PC12435, Emerging Digital Micromirror Device Based Systems and Applications XV; PC1243503 (2023) https://doi.org/10.1117/12.2648743
Event: SPIE OPTO, 2023, San Francisco, California, United States
Abstract
Two-photon photopolymerization (TPP) has emerged as a popular method for three-dimensional (3D) printing of micro-/nano-structures. On the other hand, optical diffraction tomography (ODT) has become attractive for label-free cell imaging by reconstructing the 3D refractive index (RI) distributions. We propose a high-speed ODT method to fully characterize the TPP-printed structures. Compared with traditional methods like scanning electron microscopy and atomic force microscopy, our ODT-based characterization method offers many advantages, such as revealing both the internal and external morphological features, mapping the 3D RI distributions, and quantifying the surface and side-wall roughness.
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Yanping He, Qi Shao, Shih-Chi Chen, and Renjie Zhou "High-speed optical diffraction tomography for characterizing two-photon photopolymerization fabrication", Proc. SPIE PC12435, Emerging Digital Micromirror Device Based Systems and Applications XV, PC1243503 (19 April 2023); https://doi.org/10.1117/12.2648743
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KEYWORDS
3D metrology
Diffraction
Optical tomography
Photopolymerization
Tomography
Atomic force microscopy
Scanning electron microscopy
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