Two-dimensional ordering of inclusions in smectic C phase

Cluzeau, P.; Joly, G.; Nguyen, H. T.; Долганов, В. К.

doi:10.1134/1.1494047

Cited by 42 publications

(65 citation statements)

References 10 publications

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“…Isotropic or nematic inclusions in SmC films impose planar anchoring on the c-director [85][86][87][88]93]. A similar situation is observed for smectic islands [88,91].…”

Section: -8mentioning

confidence: 58%

“…Depending on a liquid crystal compound used, different types of inclusions can be nucleated in a film upon heating: (i) isotropic droplets close to the SmC-isotropic transition [85], (ii) nematic (N) droplets nucleated in SmC films close to the bulk SmC-N transition [81,[86][87][88], (iii) cholesteric (N*) droplets nucleated in a SmC* film close to the corresponding bulk phase transition [81-83, 89, 90], and (iv) smectic islands, or circular localized regions containing additional smectic layers [83,88,91].…”

Section: Inclusions In Free Standing Smectic Filmsmentioning

confidence: 99%

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Colloidal particles in liquid crystal films and at interfaces

Tasinkevych¹,

Andrienko²

2010

Condens. Matter Phys.

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This mini-review discusses the recent contribution of theoretical and computational physics as well as experimental efforts to the understanding of the behavior of colloidal particles in confined geometries and at liquid crystalline interfaces. Theoretical approaches used to study trapping, long-and short-range interactions, and assembly of solid particles and liquid inclusions are outlined. As an example, an interaction of a spherical colloidal particle with a nematic-isotropic interface and a pair interaction potential between two colloids at this interface are obtained by minimizing the Landau-de Gennes free energy functional using the finite-element method with adaptive meshes.

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“…Isotropic or nematic inclusions in SmC films impose planar anchoring on the c-director [85][86][87][88]93]. A similar situation is observed for smectic islands [88,91].…”

Section: -8mentioning

confidence: 58%

Section: Inclusions In Free Standing Smectic Filmsmentioning

confidence: 99%

Colloidal particles in liquid crystal films and at interfaces

Tasinkevych¹,

Andrienko²

2010

Condens. Matter Phys.

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“…We restrict our study to the elliptical shapes observed in the experiment referred to above [7] and will not consider tactoids. This article is organized as follows.…”

Section: Introductionmentioning

confidence: 99%

“…The behaviour of these inverted emulsions depends upon (i) the elastic constants of the liquid crystal, (ii) the size and shape of the colloidal particles, (iii) the surface tension and (iv) the boundary conditions at the surface of the container. These contributions lead to highly anisotropic long-ranged colloidal interactions [2,3] that result in a variety of self-organised colloidal structures, such as linear chains [4,5,6,7,8], periodic lattices [8,9,10], anisotropic clusters [11], and cellular structures [12] stabilized, in general, by the presence of topological defects.…”

Section: Introductionmentioning

confidence: 99%

“…These films are useful systems to study surface interactions, ef- * nunos@cii.fc.ul.pt fects of reduced dimensionality on liquid crystal phase transitions [18], and interactions between soft colloids [6,7,8,19]. Soft colloids or inclusions are created by (i) rapid reduction of the film area, (ii) blowing across the film to pull material from the meniscus region or (iii) heating the system near the smectic-to-isotropic or smectic-to-nematic phase transition [20].…”

Section: Introductionmentioning

confidence: 99%

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Elliptical soft colloids in smectic-Cfilms

2006

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We investigate theoretically the elliptical shapes of soft colloids in freely standing smectic C films, that have been reported recently. The colloids favour parallel alignment of the liquid crystal molecules at their surfaces and, for sufficiently strong anchoring, will generate a pair of defects at the poles of the colloidal particles. The elastic free energy of the liquid crystal matrix will, in turn, affect the shape of the colloids. In this study we will focus on elliptical soft colloids and determine how their equilibrium shapes depend on the elastic constants of the liquid crystal, the anchoring strength, the surface tension and the size of the colloids. A shape diagram is obtained analytically, by minimizing the Frank elastic free energy, in the limit of small eccentricities. The analytical results are verified, and generalized to arbitrary eccentricities, by numerical minimization of an appropriate Landau free energy. The latter is required for an adequate description of the topological defects when the liquid crystal correlation length is comparable to the size of the colloidal particles.

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