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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Three-dimensional structures fabricated after laser-induced free radical generation in azoaromatic compounds

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Author(s):
Otuka, A. J. G. [1] ; Torres, B. B. M. [1] ; Dipold, J. [1] ; Balogh, D. T. [1] ; Tribuzi, V [2] ; De Boni, L. [1] ; Mendonca, C. R. [1]
Total Authors: 7
Affiliation:
[1] Univ Sao Paulo, Sao Carlos Inst Phys, BR-13560970 Sao Carlos, SP - Brazil
[2] Univ Fed Sao Carlos, Dept Phys, BR-13565905 Sao Carlos, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: OPTICAL MATERIALS EXPRESS; v. 10, n. 8, p. 1792-1800, AUG 1 2020.
Web of Science Citations: 0
Abstract

Three-dimensional microstructures with selective properties have often been developed for optical and photonic applications. The simplest way to achieve optically active structures is by the functionalization of host matrices using, for instance, organic dyes. Laser fabrication techniques, such as two-photon polymerization, allow manufacturing devices quickly, with high resolution, without shape limitation, among other many advantages. In this work, we demonstrate the fabrication of three-dimensional microstructures via two-photon polymerization, using azobenzene-based dyes as photoinitiator, the compound responsible for absorbing the light and start the polymerization. When a high photoinitiator concentration is used (for instance 1.00 wt%), a significant amount of dye remains unchanged into the final structures, and its optically induced birefringence could be investigated. Therefore, the azobenzene-based dye acts, at the same time, as the photoinitiator and functionalizer. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement (AU)

FAPESP's process: 16/20094-8 - Fabrication of biocompatible and biologically active platforms using laser processing techniques
Grantee:Adriano José Galvani Otuka
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 18/11283-7 - Nonlinear photonics: spectroscopy and advanced processing of materials
Grantee:Cleber Renato Mendonça
Support Opportunities: Research Projects - Thematic Grants