Zobrazeno 1 - 10
of 10
pro vyhledávání: '"K P, Zuhail"'
Publikováno v:
Physical Review E. 97
The competing effect of surface anchoring of dispersed microparticles and elasticity of nematic and cholesteric liquid crystals has been shown to stabilize a variety of topological defects. Here we study a pair of colloidal microparticles with homeot
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::91912603d55e5fdff23e4f487f268a79
https://doi.org/10.1103/physreve.97.032702
https://doi.org/10.1103/physreve.97.032702
Publikováno v:
Physical review. E. 97(3-1)
The competing effect of surface anchoring of dispersed microparticles and elasticity of nematic and cholesteric liquid crystals has been shown to stabilize a variety of topological defects. Here we study a pair of colloidal microparticles with homeot
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::250bc4954ad5561264e57324022d73f6
https://pubmed.ncbi.nlm.nih.gov/29776110
https://pubmed.ncbi.nlm.nih.gov/29776110
Publikováno v:
Liquid Crystals. 42:328-333
We report measurements of birefringence, dielectric anisotropy, splay and bend elastic constants of a homologous series of bicyclohexane nematic liquid crystals. These liquid crystals exhibit low birefringence and high negative dielectric anisotropy.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7edd4e8863c9f53461d9edaff81f032c
https://doi.org/10.1080/02678292.2014.987708
https://doi.org/10.1080/02678292.2014.987708
Dynamics of electro-orientation of birefringent microsheets in isotropic and nematic liquid crystals
Publikováno v:
Physical Review E. 94
We study the dynamics of electric field driven multiaxis electro-orientation of birefringent microsheets in both the isotropic and nematic phases of a liquid crystal. For a fixed direction of applied field in the isotropic phase, there are two critic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::326581bbf1e9c9e7e52a63a803c4252e
https://doi.org/10.1103/physreve.94.032701
https://doi.org/10.1103/physreve.94.032701
Autor:
Surajit Dhara, K. P. Zuhail
Publikováno v:
Soft matter. 12(32)
We report experimental studies on 2D colloidal crystals of dimers stabilized by vortex-like defects in planar nematic and π/2 twisted nematic cells. The dimers are prepared and self-assembled using a laser tweezer. We study the effect of temperature
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bbbc2947551bdea728b9e8c6cb49cfb1
https://pubmed.ncbi.nlm.nih.gov/27445255
https://pubmed.ncbi.nlm.nih.gov/27445255
Autor:
Rajadurai Chandrasekar, U. V. Ramudu, M. V. Rasna, K. P. Zuhail, Surajit Dhara, Jayasri Dontabhaktuni
Publikováno v:
Soft matter. 11(38)
Colloidal self-assembly has been one of the major driving themes in material science to obtain functional and advanced optical materials with complex architecture. Most of the nematic colloids reported so far are based on the optically isotropic sphe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4bba70faf1b5b833afc059dcb4b53a54
https://pubmed.ncbi.nlm.nih.gov/26299670
https://pubmed.ncbi.nlm.nih.gov/26299670
Publikováno v:
Physical review. E, Statistical, nonlinear, and soft matter physics. 92(5)
We report experimental studies on the Saturn ring defect associated with a spherical microparticle across the nematic (N) to smectic-A (SmA) phase transition. We observe that the director distortion around the microparticle changes rapidly with tempe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8cf259fed286a4ba6b69bc5d903ab548
https://pubmed.ncbi.nlm.nih.gov/26651711
https://pubmed.ncbi.nlm.nih.gov/26651711
Autor:
D. Seč, Surajit Dhara, P. Sathyanarayana, K. P. Zuhail, Simon Čopar, Miha Škarabot, Igor Muševič
Publikováno v:
Physical review. E, Statistical, nonlinear, and soft matter physics. 91(3)
We observe that topological defects in nematic colloids are strongly influenced by the elasticity and onset of smectic layering across the nematic (N) to smectic-A (SmA) phase transition. When approaching the SmA phase from above, the nematic hyperbo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c1c8cdadc6716d5b337f4ab8eb762f9a
https://pubmed.ncbi.nlm.nih.gov/25871035
https://pubmed.ncbi.nlm.nih.gov/25871035
Publikováno v:
Physical review. E, Statistical, nonlinear, and soft matter physics. 89(5)
We prepared nanocomposites of a nematic liquid crystal and nanofibers of a conducting polymer (polyaniline). All the nanocomposites exhibit a discontinuous surface anchoring transition from planar to homeotropic in the nematic phase on a perfluoropol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::023c27664085278f490704fa15ebdd05
https://pubmed.ncbi.nlm.nih.gov/25353811
https://pubmed.ncbi.nlm.nih.gov/25353811
Autor:
Surajit Dhara, K. P. Zuhail
Publikováno v:
Applied Physics Letters. 106:211901
We report experimental studies on the temperature dependence of equilibrium separation of a pair of nematic boojum colloids. The interparticle separation is linearly proportional to the elastic anisotropy and the orientation angle with respect to the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dc3c1f29506f030713221e42581e1c07
https://doi.org/10.1063/1.4921634
https://doi.org/10.1063/1.4921634