Výsledky vyhledávání - "Molecular and microscopic models"

Extension of the Hamaneh - Taylor model using the macroscopic polarization for the description of chiral smectic liquid crystals

Autor: S. Essid, A. Gharbi, H. Dhaouadi, J. P. Marcerou, N. Bitri, T. Soltani

Publikováno v: Physical Review E : Statistical, Nonlinear, and Soft Matter Physics
Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, American Physical Society, 2009, 80 (3), pp.031712. ⟨10.1103/PhysRevE.80.031712⟩
Physical Review E
Physical Review E, American Physical Society (APS), 2009, 80 (031712), pp. 1-7. ⟨10.1103/PhysRevE.80.031712⟩

Chiral smectic liquid crystals exhibit a series of phases, including ferroelectric, antiferroelectric, and ferrielectric commensurate structures as well as an incommensurate $\text{Sm-}{C}_{\ensuremath{\alpha}}^{\ensuremath{\ast}}$ phase. We carried

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::50187fff0ac70140023b18e2e6a02e48
http://arxiv.org/abs/0906.1114

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Enhanced stability of the tetratic phase due to clustering

Autor: Yuri Martínez-Ratón, Enrique Velasco

Publikováno v: e-Archivo. Repositorio Institucional de la Universidad Carlos III de Madrid
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Web of Science

We show that the relative stability of the nematic tetratic phase with respect to the usual uniaxial nematic phase can be greatly enhanced by clustering effects. Two--dimensional rectangles of aspect ratio $\kappa$ interacting via hard interactions a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4129a826f7159eb60e117205dd0a5f0b
https://doi.org/10.1103/physreve.79.011711

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Biaxial nematic and smectic phases of parallel particles with different cross sections

Autor: Szabolcs Varga, Enrique Velasco, Yuri Martínez-Ratón

Publikováno v: e-Archivo. Repositorio Institucional de la Universidad Carlos III de Madrid
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We have calculated the phase diagrams of one--component fluids made of five types of biaxial particles differing in their cross sections. The orientation of the principal particle axis is fixed in space, while the second axis is allowed to freely rot

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c3749b8ba1ab8e15ea7c3a8cbf6b688d
https://pubmed.ncbi.nlm.nih.gov/18851053

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Fundamental-measure density functional for mixtures of parallel hard cylinders

Autor: Yuri Martínez-Ratón, José A. Capitán, José A. Cuesta

Publikováno v: e-Archivo. Repositorio Institucional de la Universidad Carlos III de Madrid
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Web of Science

We obtain a fundamental measure density functional for mixtures of parallel hard cylinders. To this purpose we first generalize to multicomponent mixtures the fundamental measure functional proposed by Tarazona and Rosenfeld for a one-component hard

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4617a316fe9c7acd2675448e7953c037
https://doi.org/10.1103/physreve.77.051205

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Chiral Nematic Phase of Suspensions of Rodlike Viruses: Left-Handed Phase Helicity from a Right-Handed Molecular Helix

Autor: Eric Grelet, Alberta Ferrarini, Fabio Tombolato

Publikováno v: Physical Review Letters
Physical Review Letters, American Physical Society, 2006, 258302 (96), p. 258302(1-4). ⟨10.1103/PhysRevLett.96.258302⟩

4 pages; International audience; We report a study on charged, filamentous virus called M13, whose suspensions in water exhibit a chiral nematic (cholesteric) phase. In spite of the right-handed helicity of the virus, a left-handed phase helicity is

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::01446e2600b1f65711c252802a27fa9e
https://hal.archives-ouvertes.fr/hal-00148862

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Layer-thinning transitions in freely suspended smectic-A films

Autor: Andres M. Somoza, Martinezraton, Y., Mederos, L.

Publikováno v: e-Archivo. Repositorio Institucional de la Universidad Carlos III de Madrid
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ResearcherID

5 pages, 2 figures.-- PACS nrs.: 61.30.Cz, 61.30.Hn, 64.70.M-. We outline the elements of a mean-field density functional theory of inhomogeneous liquid crystals which is able to account for surface-enhanced smectic ordering (SESO) at a free surface.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::570f7c0612885f0faa5ec7573e1fcb13
http://hdl.handle.net/10016/7097

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A dissipative particle dynamics study of the realignment of a nanodroplet of a nematic in a weak external magnetic field

Autor: Y. K. Levine, A. Polimeno

Publikováno v: The European Physical Journal. E, Soft Matter

We present a dissipative particle dynamics (DPD) approach for simulating the realignment of a nematic nanodroplet suspended in an isotropic fluid following a switch in the direction of an applied external magnetic field. The interaction of the mesoge

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f2c5851e383bf163076409021b8c9183

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