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Elastomeric Optical Waveguides by Extrusion Printing

  • Advances in optogenetics and the increasing use of implantable devices for therapies and health monitoring are driving demand for compliant, biocompatible optical waveguides and scalable methods for their manufacture. Molding, thermal drawing, and dip-coating are the most prevalent approaches in recent literature. Here the authors demonstrate that extrusion printing at room temperature can be used for continuous fabrication of compliant optical waveguides with polydimethylsiloxane (PDMS) core and crosslinked Pluronic F127-diacrylate (Pluronic-DA) cladding. The optical fibers are printed from fluid precursor inks and stabilized by physical interactions and photoinitiated crosslinking in the Pluronic-DA. The printed fibers show optical loss values of 0.13–0.34 dB cm–1 in air and tissue within the wavelength range of 405–520 nm. The fibers have a Young's Modulus (Pluronic cladding) of 150 kPa and can be stretched to more than 5 times their length. The optical loss of the fibers shows little variation with extension. This work demonstrates how printing can simplify the fabrication of compliant and stretchable devices from materials approved for clinical use. These can be of interest for optogenetic or photopharmacology applications in extensible tissues, like muscles or heart.

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Document Type:Article
Author:Jun Feng, Yijun Zheng, Qiyang Jiang, Małgorzata K. Włodarczyk-BiegunORCiD, Samuel Pearson, Aránzazu del Campo BécaresORCiD
Parent Title (English):Advanced Materials Technology
First Page:2101539
Year of first Publication:2022
Release Date:2022/10/21
Tag:elastomers; extrusion printing; hydrogels; optical fibers; optical waveguides
Impact:08.856 (2021)
Groups:Dynamische Biomaterialien
DDC classes:600 Technik, Medizin, angewandte Wissenschaften / 660 Technische Chemie
Open Access:Open Access
Signature:INM 2022/050
Licence (German):License LogoCreative Commons - CC BY-NC - Namensnennung - Nicht kommerziell 4.0 International