| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Richardson, Robert M.
University of Bristol
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (17/17 displayed)
- 2021Dendritic Micelles with Controlled Branching and Sensor Applicationscitations
- 2020Interactions between PAMAM dendrimers and DOPC lipid multilayerscitations
- 2020Interactions between PAMAM dendrimers and DOPC lipid multilayers:Membrane thinning and structural disordercitations
- 2018Structure of the Crystalline Core of Fiber-like Polythiophene Block Copolymer Micellescitations
- 2018High Stiffness Cellulose Fibers from Low Molecular Weight Microcrystalline Cellulose Solutions Using DMSO as Co-Solvent with Ionic Liquidcitations
- 2016“Cross” Supermicelles via the Hierarchical Assembly of Amphiphilic Cylindrical Triblock Comicellescitations
- 2016Blocked Shape Memory Effect in Negative Poisson's Ratio Polymer Metamaterialscitations
- 2015Self-assembly of a functional oligo(aniline)-based amphiphile into helical conductive nanowirescitations
- 2013The influence of suspended nano-particles on the frederiks threshold of the nematic host
- 2013The solution phase characterization of poly(ferrocenyldimethylsilane)s by small-angle neutron scatteringcitations
- 2013The influence of suspended nanoparticles on the Frederiks threshold of the nematic hostcitations
- 2013Electro-induced orientational ordering of anisotropic pigment nanoparticlescitations
- 2011Liquid-crystalline symmetric triblock copolymers
- 2011Probing the Structure of the Crystalline Core of Field-Aligned, Monodisperse, Cylindrical Polyisoprene-block-Polyferrocenylsilane Micelles in Solution Using Synchrotron Small- and Wide-Angle X-ray Scatteringcitations
- 2009Not All Anionic Polyelectrolytes Complex with DTAB
- 2001Carbosilane liquid crystalline dendrimers with terminal chiral mesogenic groupscitations
- 2001Polymerization of cationic surfactant phasescitations
Places of action
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booksection
The influence of suspended nano-particles on the frederiks threshold of the nematic host
Abstract
In recent years several papers reported an enhanced dielectric anisotropy when ferroelectric particles were suspended in a liquid crystal. These results seem to be sensitive to the liquid crystal used and the preparation method of the ferroelectric particles. In this paper we compare different preparation methods of suspended barium titanate in two different liquid crystal hosts. As a control experiment we have followed similar preparation steps with non- ferroelectric silica particles. In all cases we found a broadening of the optical Frederiks transition but no change in the dielectric anisotropy. Raman spectroscopy has been used to investigate the loss of tetragonal structure in the barium titanate as a function of milling time and particle size. As reported in the earlier literature barium titanate does not exhibit a well-defined tetragonal crystal structure below a certain particle size and loses its ferroelectric features. This provides a simple rationalisation for the absence of any dielectric enhancement.