Zobrazeno 1 - 10
of 37
pro vyhledávání: '"André M. Sonnet"'
Nematic polymeric networks are (heat and light) activable materials, which combine the features of rubber and nematic liquid crystals. When only the stretching energy of a thin sheet of nematic polymeric network is minimized, the intrinsic (Guassian)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e685883ad007085b37e793a29256389a
When a material surface is functionalized so as to acquire some type of order, functionalization of which soft condensed matter systems have recently provided many interesting examples, the modeller faces an alternative. Either the order is described
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4bd57582b2ab5dd291b89152bce4a027
https://strathprints.strath.ac.uk/64775/8/Mirantsev_etal_PRE_2018_Lifting_ordered_surfaces_ellipsoidal_nematic_sheels.pdf
https://strathprints.strath.ac.uk/64775/8/Mirantsev_etal_PRE_2018_Lifting_ordered_surfaces_ellipsoidal_nematic_sheels.pdf
Autor:
Alison Ramage, André M. Sonnet
Publikováno v:
BIT Numerical Mathematics. 56:573-586
Due to recent advances in fast iterative solvers in the field of computational fluid dynamics, more complex problems which were previously beyond the scope of standard techniques can be tackled. In this paper, we describe one such situation, namely,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::023a39f79057a1c4e63a034c8be47686
https://doi.org/10.1007/s10543-015-0586-5
https://doi.org/10.1007/s10543-015-0586-5
Autor:
André M. Sonnet, Epifanio G. Virga
Nematic shells are colloidal particles coated with nematic liquid crystal molecules which may freely glide and rotate on the colloid's surface while keeping their long axis on the local tangent plane. We describe the nematic order on a shell by a uni
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::093bace153bb50d8f9e17273bd9e9fa4
Autor:
Epifanio G. Virga, André M. Sonnet
Publikováno v:
Liquid Crystals. 37:785-797
To appreciate the universal qualitative features of defect annihilation in nematic liquid crystals, we study how the viscous force of reorientational dynamics behaves under a transformation that reverses the sign of the defect's topological charge. A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c78efde7a96347148d83d2da9dc25804
https://doi.org/10.1080/02678292.2010.481905
https://doi.org/10.1080/02678292.2010.481905
Autor:
Epifanio G. Virga, André M. Sonnet
Publikováno v:
Liquid Crystals. 36:1185-1192
We propose a simple phenomenological model for hydrodynamic defect dynamics in nematic liquid crystals, inspired by the Ericksen–Leslie theory. We identify the main forces that govern both fluid and defect motion and we comment on their symmetry. A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f497250e7db5f51b64746a3b181dd29b
https://doi.org/10.1080/02678290903034480
https://doi.org/10.1080/02678290903034480
Publikováno v:
Continuum Mechanics and Thermodynamics. 20:347-374
We present a phenomenological theory for the homogeneous phases of nematic liquid crystals constituted by biaxial molecules. We propose a general polynomial potential in two macroscopic order parameter tensors that reproduces the mean-field phase dia
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::70b821f299610ed7d051314aa4bb3a64
https://doi.org/10.1007/s00161-008-0086-9
https://doi.org/10.1007/s00161-008-0086-9
Autor:
André M. Sonnet
Publikováno v:
Continuum Mechanics and Thermodynamics. 17:287-295
The effect of backflow in defect dynamics is assessed by computing the viscous force on point and line defects that move due to reorientation. It is found that defects with a positive winding number are accelerated while defects with a negative windi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3b6c379d6c2f5252387d075eba2fc7e0
https://doi.org/10.1007/s00161-005-0204-x
https://doi.org/10.1007/s00161-005-0204-x
Publikováno v:
Journal of Non-Newtonian Fluid Mechanics. 119:51-59
From a variational principle, we derive the equations of motion for nematic liquid crystals described by a second-rank order tensor. The only constitutive ingredients are the densities of the free energy and the dissipation, both subject to appropria
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::29d314a27d212f37411c5922db3ffd95
https://doi.org/10.1016/j.jnnfm.2003.02.001
https://doi.org/10.1016/j.jnnfm.2003.02.001
Publikováno v:
Continuum Mechanics and Thermodynamics. 14:307-319
We present a general method to compute the elastic forces exerted on nematic point defects: these are the forces that set defects in motion, and so they are especially relevant to defect dynamics, a subject which is recently attracting much interest.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7bc89f6f16b89dc5eb67bc8328d71845
https://doi.org/10.1007/s00161-002-0099-8
https://doi.org/10.1007/s00161-002-0099-8