Light confinement in liquid crystals for optofluidic integrated microsystems -INVITED

In this paper technology to make optical waveguides and microfluidic channels integrated on the same substrate will be reported to envisage novel micro-optofluidic chips. PolyDiMethylSiloxane (PDMS) is used to make microchannels to be filled with biological solutions. Liquid crystals (LC) are used t...

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Autores principales:	d’Alessandro Antonio, Kumaran Anju M.
Formato:	article
Lenguaje:	EN
Publicado:	EDP Sciences 2021
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/50878f8b811e4f9988eedbe2eb0dedfa
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spelling	oai:doaj.org-article:50878f8b811e4f9988eedbe2eb0dedfa2021-12-02T17:12:51ZLight confinement in liquid crystals for optofluidic integrated microsystems -INVITED2100-014X10.1051/epjconf/202125510001https://doaj.org/article/50878f8b811e4f9988eedbe2eb0dedfa2021-01-01T00:00:00Zhttps://www.epj-conferences.org/articles/epjconf/pdf/2021/09/epjconf_eosam2021_10001.pdfhttps://doaj.org/toc/2100-014XIn this paper technology to make optical waveguides and microfluidic channels integrated on the same substrate will be reported to envisage novel micro-optofluidic chips. PolyDiMethylSiloxane (PDMS) is used to make microchannels to be filled with biological solutions. Liquid crystals (LC) are used to confine light to produce optical interaction with biological fluidic specimen. Optical waveguides base on PDMS channels filled with LC, named LC:PDMS waveguides, including both straight and bending channels are reported to design photonic devices. Electro-optic effect of LC allows to make tuneable optical waveguides to reconfigure the entire optofluidic microsystem which can include gold nanoparticles for photo-thermal therapies. Coplanar gold electrodes can switch LC molecules with applied voltage of about 2 V. Such electrode configuration can be used to make optical switches and wavelengths demultiplexers. A zero-gap directional coupler based on LC:PDMS waveguides has been designed to switch light from one waveguide to another with an extinction ratio of 16 dB by applying a voltage of just 1.62 V. A multimode interference demultiplexer has been also designed to demultiplex wavelengths at 980 nm and 1550 nm in two output waveguides with an extinction ratio better than 11 dB by applying about 7 V.d’Alessandro AntonioKumaran Anju M.EDP SciencesarticlePhysicsQC1-999ENEPJ Web of Conferences, Vol 255, p 10001 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 d’Alessandro Antonio Kumaran Anju M. Light confinement in liquid crystals for optofluidic integrated microsystems -INVITED
description	In this paper technology to make optical waveguides and microfluidic channels integrated on the same substrate will be reported to envisage novel micro-optofluidic chips. PolyDiMethylSiloxane (PDMS) is used to make microchannels to be filled with biological solutions. Liquid crystals (LC) are used to confine light to produce optical interaction with biological fluidic specimen. Optical waveguides base on PDMS channels filled with LC, named LC:PDMS waveguides, including both straight and bending channels are reported to design photonic devices. Electro-optic effect of LC allows to make tuneable optical waveguides to reconfigure the entire optofluidic microsystem which can include gold nanoparticles for photo-thermal therapies. Coplanar gold electrodes can switch LC molecules with applied voltage of about 2 V. Such electrode configuration can be used to make optical switches and wavelengths demultiplexers. A zero-gap directional coupler based on LC:PDMS waveguides has been designed to switch light from one waveguide to another with an extinction ratio of 16 dB by applying a voltage of just 1.62 V. A multimode interference demultiplexer has been also designed to demultiplex wavelengths at 980 nm and 1550 nm in two output waveguides with an extinction ratio better than 11 dB by applying about 7 V.
format	article
author	d’Alessandro Antonio Kumaran Anju M.
author_facet	d’Alessandro Antonio Kumaran Anju M.
author_sort	d’Alessandro Antonio
title	Light confinement in liquid crystals for optofluidic integrated microsystems -INVITED
title_short	Light confinement in liquid crystals for optofluidic integrated microsystems -INVITED
title_full	Light confinement in liquid crystals for optofluidic integrated microsystems -INVITED
title_fullStr	Light confinement in liquid crystals for optofluidic integrated microsystems -INVITED
title_full_unstemmed	Light confinement in liquid crystals for optofluidic integrated microsystems -INVITED
title_sort	light confinement in liquid crystals for optofluidic integrated microsystems -invited
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/50878f8b811e4f9988eedbe2eb0dedfa
work_keys_str_mv	AT dalessandroantonio lightconfinementinliquidcrystalsforoptofluidicintegratedmicrosystemsinvited AT kumarananjum lightconfinementinliquidcrystalsforoptofluidicintegratedmicrosystemsinvited
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Light confinement in liquid crystals for optofluidic integrated microsystems -INVITED

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