Optofluidic platform using liquid crystals in lithium niobate microchannel

We demonstrate the all optical control of the molecular orientation of nematic liquid crystals confined in microfluidic channels engraved in lithium niobate. Microchannels are obtained by a novel approach based on femtosecond pulse laser micromachining carried on in controlled atmosphere. The combin...

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Autores principales: Bonfadini, Silvio, Ciciulla, Fabrizio, Criante, Luigino, Zaltron, Annamaria, Simoni, Francesco, Reshetnyak, Victor, Lucchetti, Liana
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6355794/
https://www.ncbi.nlm.nih.gov/pubmed/30705302
http://dx.doi.org/10.1038/s41598-018-37351-7
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author Bonfadini, Silvio
Ciciulla, Fabrizio
Criante, Luigino
Zaltron, Annamaria
Simoni, Francesco
Reshetnyak, Victor
Lucchetti, Liana
author_facet Bonfadini, Silvio
Ciciulla, Fabrizio
Criante, Luigino
Zaltron, Annamaria
Simoni, Francesco
Reshetnyak, Victor
Lucchetti, Liana
author_sort Bonfadini, Silvio
collection PubMed
description We demonstrate the all optical control of the molecular orientation of nematic liquid crystals confined in microfluidic channels engraved in lithium niobate. Microchannels are obtained by a novel approach based on femtosecond pulse laser micromachining carried on in controlled atmosphere. The combined effect of photovoltaic and pyroelectric fields generated by light in lithium niobate crystals on the liquid crystal orientation, is reported for the first time. The total space charge field and its dependence on the incident light intensity can be controlled by changing the direction of pump light propagation through the microfluidic chip. The results reported in this manuscript demonstrate that liquid crystals and lithium niobate can efficiently be combined in microfluidic configuration, in order to push forward a novel class of optofluidic devices.
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spelling pubmed-63557942019-02-01 Optofluidic platform using liquid crystals in lithium niobate microchannel Bonfadini, Silvio Ciciulla, Fabrizio Criante, Luigino Zaltron, Annamaria Simoni, Francesco Reshetnyak, Victor Lucchetti, Liana Sci Rep Article We demonstrate the all optical control of the molecular orientation of nematic liquid crystals confined in microfluidic channels engraved in lithium niobate. Microchannels are obtained by a novel approach based on femtosecond pulse laser micromachining carried on in controlled atmosphere. The combined effect of photovoltaic and pyroelectric fields generated by light in lithium niobate crystals on the liquid crystal orientation, is reported for the first time. The total space charge field and its dependence on the incident light intensity can be controlled by changing the direction of pump light propagation through the microfluidic chip. The results reported in this manuscript demonstrate that liquid crystals and lithium niobate can efficiently be combined in microfluidic configuration, in order to push forward a novel class of optofluidic devices. Nature Publishing Group UK 2019-01-31 /pmc/articles/PMC6355794/ /pubmed/30705302 http://dx.doi.org/10.1038/s41598-018-37351-7 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Bonfadini, Silvio
Ciciulla, Fabrizio
Criante, Luigino
Zaltron, Annamaria
Simoni, Francesco
Reshetnyak, Victor
Lucchetti, Liana
Optofluidic platform using liquid crystals in lithium niobate microchannel
title Optofluidic platform using liquid crystals in lithium niobate microchannel
title_full Optofluidic platform using liquid crystals in lithium niobate microchannel
title_fullStr Optofluidic platform using liquid crystals in lithium niobate microchannel
title_full_unstemmed Optofluidic platform using liquid crystals in lithium niobate microchannel
title_short Optofluidic platform using liquid crystals in lithium niobate microchannel
title_sort optofluidic platform using liquid crystals in lithium niobate microchannel
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6355794/
https://www.ncbi.nlm.nih.gov/pubmed/30705302
http://dx.doi.org/10.1038/s41598-018-37351-7
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