Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Karl Saunders"'
Publikováno v:
Physical Review E. 100
We conduct an in-depth analysis of the electroclinic effect in chiral, ferroelectric liquid crystal systems that have a first-order smectic-A^{*}-smectic-C^{*} (Sm-A^{*}-Sm-C^{*}) transition, and show that such systems can be either type I or type II
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20fd678e82bbe28f132c5b0ffe7c04ce
https://doi.org/10.1103/physreve.100.022707
https://doi.org/10.1103/physreve.100.022707
Publikováno v:
Physical Review E. 89
We present and analyze a model for the combination of bulk and surface electroclinic effects in the smectic-A* (Sm-A*) phase near a Sm-A*-Sm-C* transition. As part of our analysis we calculate the dependence of the surface tilt on external electric f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e029acd814622140a5328df23fc55ebb
https://doi.org/10.1103/physreve.89.022502
https://doi.org/10.1103/physreve.89.022502
Publikováno v:
Physical Review Letters. 85:4309-4312
We show that discotics, lying deep in the columnar phase, can exhibit an x-ray scattering pattern which mimics that of a somewhat unusual smectic liquid crystal. This exotic, new glassy phase of columnar liquid crystals, which we call a ``hybrid colu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f5e672ad04e144598454cb7d02325727
https://doi.org/10.1103/physrevlett.85.4309
https://doi.org/10.1103/physrevlett.85.4309
Topologically ordered phases of smectics confined in anisotropic random media: smectic Bragg glasses
Publikováno v:
Journal of Physics: Condensed Matter. 12:A215-A220
We report the existence of two new topologically ordered glass phases of smectics in strained aerogel. In contrast to the case of unstrained aerogel, we find compelling theoretical arguments that a smectic in uniaxially stretched aerogel exhibits, fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a0cdef8f6471401a3c51b0f81b6d5004
https://doi.org/10.1088/0953-8984/12/8a/326
https://doi.org/10.1088/0953-8984/12/8a/326
Publikováno v:
Physical Review Letters. 83:1363-1366
We show that smectic liquid crystals confined in_anisotropic_ porous structures such as e.g.,_strained_ aerogel or aerosil exhibit two new glassy phases. The strain both ensures the stability of these phases and determines their nature. One type of s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::87353e176c645aa5c42aafc48232d3a3
https://doi.org/10.1103/physrevlett.83.1363
https://doi.org/10.1103/physrevlett.83.1363
Autor:
Karl, Saunders
Publikováno v:
Physical review letters. 112(13)
Critical behavior near the smectic A-C tricritical point is studied using renormalization group techniques. Critical fluctuations induce a singular softening of the smectic bulk modulus in the A phase. At the tricritical point, the quasi-long-range p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::9ab07e42f2a3f13a5ab41a50309f6106
https://pubmed.ncbi.nlm.nih.gov/24745455
https://pubmed.ncbi.nlm.nih.gov/24745455
Autor:
Karl Saunders
Publikováno v:
Physical Review E. 84
The biaxial smectic-A* (Sm-A(B)*) phase, appearing in the phase sequence Sm-A*-Sm-A(B)*-Sm-C*, is analyzed using Landau theory. It is found to possess a helical superstructure with a pitch that is significantly shorter than the pitch of the Sm-C* hel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aaca33d92c64c99f105a65a4bd2680ad
https://doi.org/10.1103/physreve.84.011708
https://doi.org/10.1103/physreve.84.011708
Autor:
Karl Saunders, Per Rudquist
Publikováno v:
Physical Review E. 83
We analyze the surface electroclinic effect (SECE) in a material that exhibits a first-order bulk smectic-A* (Sm-A*)-smectic-C* (Sm-C*) transition. The effect of a continuously varying degree of enantiomeric excess on the SECE is also investigated. W
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c8e2eb582c764f6d067b8c941655271c
https://doi.org/10.1103/physreve.83.051711
https://doi.org/10.1103/physreve.83.051711
Autor:
Karl, Saunders, Per, Rudquist
Publikováno v:
Physical review. E, Statistical, nonlinear, and soft matter physics. 83(5 Pt 1)
We analyze the surface electroclinic effect (SECE) in a material that exhibits a first-order bulk smectic-A* (Sm-A*)-smectic-C* (Sm-C*) transition. The effect of a continuously varying degree of enantiomeric excess on the SECE is also investigated. W
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::e84e4aa2a8844e713140a110ba144024
https://pubmed.ncbi.nlm.nih.gov/21728560
https://pubmed.ncbi.nlm.nih.gov/21728560
Autor:
Karl, Saunders
Publikováno v:
Physical review. E, Statistical, nonlinear, and soft matter physics. 84(1 Pt 1)
The biaxial smectic-A* (Sm-A(B)*) phase, appearing in the phase sequence Sm-A*-Sm-A(B)*-Sm-C*, is analyzed using Landau theory. It is found to possess a helical superstructure with a pitch that is significantly shorter than the pitch of the Sm-C* hel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::cc55f89c4804bbef7d0a890f8dffdf62
https://pubmed.ncbi.nlm.nih.gov/21867197
https://pubmed.ncbi.nlm.nih.gov/21867197