NDLI: Nano-structured liquid crystal waveguides for optofluidic applications

Content Provider	IEEE Xplore Digital Library
Author	Asquini, R. Martini, L. d'Alessandro, A. Pasini, P. Chiccoli, C. Zannoni, C.
Copyright Year	2015
Description	Author affiliation: Sezione di Bologna, Ist. Naz. di Fis. Nucleare, Bologna, Italy (Pasini, P.; Chiccoli, C.) \|\| Dept. of Inf. Eng., Electron. & Telecommun., Sapienza Univ. of Rome, Rome, Italy (Asquini, R.; Martini, L.; d'Alessandro, A.) \|\| Dipt. di Chim. Ind. “Toso Montanari”, Univ. di Bologna, Bologna, Italy (Zannoni, C.)
Abstract	We present light propagation in channel waveguides whose core consists of liquid crystals (LC) infiltrated in poly(dimethylsiloxane) (PDMS) channels (LC:PDMS waveguides) for potential optofluidic reconfigurable microsystems. Modeling, fabrication process steps, and optical characterization are described. Despite the intrinsic optical anisotropy of LC molecules, which induce polarization dependent optical propagation, experimental results on LC:PDMS optical channels show polarization independent optical transmission. We show that this is due to the molecular orientation of LC molecules induced by the interface interaction of the elongated shape of rod-like LC molecules with PDMS surfaces. To get a better explication of this system we present a detailed investigation of the cell by means of the Monte Carlo simulations, which allow to reproduce not only polarized optical images but also the molecular organization and the ordering inside the LC system. LC:PDMS waveguides can be envisaged as part of flexible photonic circuits.
Starting Page	338
Ending Page	341
File Size	505569
Page Count	4
File Format	PDF
e-ISBN	9781467381567
DOI	10.1109/NANO.2015.7388994
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-07-27
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical waveguides Optical polarization Optical device fabrication Optical imaging Nonlinear optics Optical sensors optical waveguides Monte Carlo anchoring optofluidics liquid crystals
Content Type	Text
Resource Type	Article

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