Complex topological structures of frustrated liquid crystals with potential for optics and photonics (Presentation Recording)

Slobodan Žumer; Miha Čančula; Simon Čopar; Miha Ravnik

doi:10.1117/12.2190237

5 October 2015 Complex topological structures of frustrated liquid crystals with potential for optics and photonics (Presentation Recording)

Slobodan Žumer, Miha Čančula, Simon Čopar, Miha Ravnik

Author Affiliations +

Proceedings Volume 9565, Liquid Crystals XIX; 95650W (2015) https://doi.org/10.1117/12.2190237
Event: SPIE Organic Photonics + Electronics, 2015, San Diego, California, United States

Abstract

Geometrical constrains and intrinsic chirality in nematic mesophases enable formation of stable and metastable complex defect structures. Recently selected knotted and linked disclinations have been formed using laser manipulation of nematic braids entangling colloidal particles in nematic colloids [Tkalec et al., Science 2011; Copar et al., PNAS 2015]. In unwinded chiral nematic phases stable and metastable toron and hopfion defects have been implemented by laser tweezers [Smalyukh et al., Nature Materials 2010; Chen et al., PRL2013] and in chiral nematic colloids particles dressed by solitonic deformations [Porenta et al., Sci. Rep. 2014]. Modelling studies based on the numerical minimisation of the phenomenological free energy, supported with the adapted topological theory [Copar and Zumer, PRL 2011; Copar, Phys. Rep. 2014] allow describing the observed nematic defect structures and also predicting numerous structures in confined blue phases [Fukuda and Zumer, Nature Comms 2011 and PRL 2011] and stable knotted disclinations in cholesteric droplets with homeotropic boundary [Sec et al., Nature Comms 2014]. Coupling the modeling with finite difference time domain light field computation enables understanding of light propagation and light induced restructuring in these mesophases. The method was recently demonstrated for the description of low intensity light beam changes during the propagation along disclination lines [Brasselet et al., PRL 2009; Cancula et al., PRE 2014]. Allowing also high intensity light an order restructuring is induced [Porenta et al., Soft Matter 2012; Cancula et al., 2015]. These approaches help to uncover the potential of topological structures for beyond-display optical and photonic applications.

Conference Presentation

View presentation video on SPIE's Digital Library: http://dx.doi.org/10.1117/12.2189723.4519371788001

Citation Download Citation

Slobodan Žumer, Miha Čančula, Simon Čopar, and Miha Ravnik "Complex topological structures of frustrated liquid crystals with potential for optics and photonics (Presentation Recording)", Proc. SPIE 9565, Liquid Crystals XIX, 95650W (5 October 2015); https://doi.org/10.1117/12.2190237

Access the abstract

PROCEEDINGS
PRESENTATION

WATCH
PRESENTATION SAVE TO MY LIBRARY

GET CITATION

KEYWORDS

Geometrical optics

Photonics

Liquid crystals

Particles

Beam propagation method

Finite-difference time-domain method

Modeling

Show All Keywords

RELATED CONTENT

Experimental characterisation of holographic optical traps for microbubbles
Proceedings of SPIE (May 02 2014)

Nematic colloidal tilings as photonic materials
Proceedings of SPIE (February 19 2014)

Faster and more accurate geometrical optics optical force calculation using...
Proceedings of SPIE (January 01 1900)

Electrothermoplasmonic flow for plasmon-assisted optical trapping (Presentation Recording)
Proceedings of SPIE (January 01 1900)

Optical tweezers toolbox full dynamics simulations for particles of...
Proceedings of SPIE (September 07 2018)

Manipulating multiparticles simultaneously with tapered-tip single fiber optical tweezers
Proceedings of SPIE (March 06 2009)

Modelling of optical trapping
Proceedings of SPIE (September 08 2011)

Subscribe to Digital Library

Receive Erratum Email Alert

Show All Keywords

Keywords/Phrases

Search In:

Publication Years