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Open AccessArticle

Photoresist Design for Elastomeric Light Tunable Photonic Devices

1
European Laboratory for Non-Linear Spectroscopy (LENS), University of Florence, via Nello Carrara 1, 50019 Sesto Fiorentino, Italy
2
Department of Chemistry “Ugo Schiff”, University of Florence, via Della Lastruccia 3-13, 50019 Sesto Fiorentino, Italy
3
CNR-INO, Sede Secondaria di Sesto Fiorentino, via Nello Carrara 1, 50019 Sesto Fiorentino, Italy
*
Author to whom correspondence should be addressed.
These authors contributed equally.
Academic Editor: Dariusz M. Bieliński
Materials 2016, 9(7), 525; https://doi.org/10.3390/ma9070525
Received: 9 May 2016 / Revised: 9 June 2016 / Accepted: 21 June 2016 / Published: 29 June 2016
(This article belongs to the Special Issue Advances in Research on Elastomers)
An increasing interest in tunable photonic structures is growing within the photonic community. The usage of Liquid Crystalline Elastomer (LCE) structures in the micro-scale has been motivated by the potential to remotely control their properties. In order to design elastic photonic structures with a three-dimensional lithographic technique, an analysis of the different mixtures used in the micro-printing process is required. Previously reported LCE microstructures suffer damage and strong swelling as a limiting factor of resolution. In this article, we reported a detailed study on the writing process with four liquid crystalline photoresists, in which the percentage of crosslinker is gradually increased. The experiments reveal that exploiting the crosslinking degree is a possible means in which to obtain suspended lines with good resolution, quite good rigidity, and good elasticity, thereby preserving the possibility of deformation by light irradiation. View Full-Text
Keywords: liquid crystalline elastomers; direct laser writing; azobenzene containing polymers liquid crystalline elastomers; direct laser writing; azobenzene containing polymers
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MDPI and ACS Style

Nocentini, S.; Martella, D.; Parmeggiani, C.; Wiersma, D.S. Photoresist Design for Elastomeric Light Tunable Photonic Devices. Materials 2016, 9, 525.

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