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Direct birefringence and transmission modulation via dynamic alignment of P3HT nanofibers in an advanced opto-fluidic component
KTH Royal Institute of Technology, Sweden.
KTH Royal Institute of Technology, Sweden.
RISE - Research Institutes of Sweden, ICT, Acreo.
KTH Royal Institute of Technology, Sweden.
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2017 (Engelska)Ingår i: Optical Materials Express, ISSN 2159-3930, E-ISSN 2159-3930, Vol. 7, nr 1, s. 52-61Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Poly-3-hexylthiophene (P3HT) nanofibers are semiconducting high-aspect ratio nanostructures with anisotropic absorption and birefringence properties found at different regions of the optical spectrum. In addition, P3HT nanofibers possess an ability to be aligned by an external electric field, while being dispersed in a liquid. In this manuscript we show that such collective ordering of nanofibers, similar to liquid crystal material, significantly changes the properties of transmitted light. With a specially fabricated opto-fluidic component, we monitored the phase and transmission modulation of light propagating through the solution of P3HT nanofibers, being placed in the electric field with strength up to 0.1 V/μm. This report describes a technique for light modulation, which can be implemented in optical fiber-based devices or on-chip integrated components.

Ort, förlag, år, upplaga, sidor
2017. Vol. 7, nr 1, s. 52-61
Nyckelord [en]
Absorption spectroscopy, Aspect ratio, Birefringence, Electric fields, Light modulation, Liquid crystals, Modulation, Nanofibers, Optical fiber fabrication, Optical fibers, Anisotropic absorption, Birefringence property, External electric field, Fiber-based device, High aspect ratio nano-structures, Liquid crystal materials, Poly-3-hexylthiophene, Transmission modulation, Light transmission
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URN: urn:nbn:se:ri:diva-29201DOI: 10.1364/OME.7.000052Scopus ID: 2-s2.0-85008157720OAI: oai:DiVA.org:ri-29201DiVA, id: diva2:1086493
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Export Date: 3 April 2017; Article

Tillgänglig från: 2017-04-03 Skapad: 2017-04-03 Senast uppdaterad: 2019-01-03Bibliografiskt granskad

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