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Proceedings Paper • Open Access

3D printing of optical materials: an investigation of the microscopic properties
Author(s): Luana Persano; Francesco Cardarelli; Arkadii Arinstein; Sureeporn Uttiya; Eyal Zussman; Dario Pisignano; Andrea Camposeo

Paper Abstract

3D printing technologies are currently enabling the fabrication of objects with complex architectures and tailored properties. In such framework, the production of 3D optical structures, which are typically based on optical transparent matrices, optionally doped with active molecular compounds and nanoparticles, is still limited by the poor uniformity of the printed structures. Both bulk inhomogeneities and surface roughness of the printed structures can negatively affect the propagation of light in 3D printed optical components. Here we investigate photopolymerization-based printing processes by laser confocal microscopy. The experimental method we developed allows the printing process to be investigated in-situ, with microscale spatial resolution, and in real-time. The modelling of the photo-polymerization kinetics allows the different polymerization regimes to be investigated and the influence of process variables to be rationalized. In addition, the origin of the factors limiting light propagation in printed materials are rationalized, with the aim of envisaging effective experimental strategies to improve optical properties of printed materials.

Paper Details

Date Published: 21 February 2018
PDF: 7 pages
Proc. SPIE 10529, Organic Photonic Materials and Devices XX, 105290V (21 February 2018); doi: 10.1117/12.2290495
Show Author Affiliations
Luana Persano, Istituto Nanoscienze-CNR (Italy)
Francesco Cardarelli, Istituto Nanoscienze-CNR (Italy)
Arkadii Arinstein, Technion-Israel Institute of Technology (Israel)
Sureeporn Uttiya, Istituto Nanoscienze-CNR (Italy)
Eyal Zussman, Technion-Israel Institute of Technology (Israel)
Dario Pisignano, Istituto Nanoscienze-CNR (Italy)
Univ. di Pisa (Italy)
Andrea Camposeo, Istituto Nanoscienze-CNR (Italy)

Published in SPIE Proceedings Vol. 10529:
Organic Photonic Materials and Devices XX
Christopher E. Tabor; François Kajzar; Toshikuni Kaino; Yasuhiro Koike, Editor(s)

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