Abstract
We found that the optically isotropic (IM) mesophase observed recently below the nematic phase of the bent-core liquid crystal 4-chlororesorcinol bis[4-(4-n-dodecyloxybenzoyloxy)benzoate] shows ferroelectric-type switching. Polarizing microscopic, electric current, dielectric, and dynamic light scattering studies lead us to propose that the IM phase is composed of interconnected orthoconic racemic smectic (Sm-CaPF) nanodomains with random layer orientations. Near the nematic phase, where the polarization can be saturated by electric fields, the system responds in a fashion analogous to the granular structure of a magnetic spin glass-in particular, we observed that the relaxation back to the nonpoled structure follows a similar, inverse logarithmic rule.
| Original language | English (US) |
|---|---|
| Article number | 021710 |
| Journal | Physical Review E - Statistical, Nonlinear, and Soft Matter Physics |
| Volume | 72 |
| Issue number | 2 |
| DOIs | |
| State | Published - Aug 1 2005 |
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ASJC Scopus subject areas
- Statistical and Nonlinear Physics
- Statistics and Probability
- Condensed Matter Physics
Cite this
Optically isotropic liquid-crystal phase of bent-core molecules with polar nanostructure. / Liao, G.; Stojadinovic, S.; Pelzl, G.; Weissflog, W.; Sprunt, S.; Jákli, A.
In: Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, Vol. 72, No. 2, 021710, 01.08.2005.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Optically isotropic liquid-crystal phase of bent-core molecules with polar nanostructure
AU - Liao, G.
AU - Stojadinovic, S.
AU - Pelzl, G.
AU - Weissflog, W.
AU - Sprunt, S.
AU - Jákli, A.
PY - 2005/8/1
Y1 - 2005/8/1
N2 - We found that the optically isotropic (IM) mesophase observed recently below the nematic phase of the bent-core liquid crystal 4-chlororesorcinol bis[4-(4-n-dodecyloxybenzoyloxy)benzoate] shows ferroelectric-type switching. Polarizing microscopic, electric current, dielectric, and dynamic light scattering studies lead us to propose that the IM phase is composed of interconnected orthoconic racemic smectic (Sm-CaPF) nanodomains with random layer orientations. Near the nematic phase, where the polarization can be saturated by electric fields, the system responds in a fashion analogous to the granular structure of a magnetic spin glass-in particular, we observed that the relaxation back to the nonpoled structure follows a similar, inverse logarithmic rule.
AB - We found that the optically isotropic (IM) mesophase observed recently below the nematic phase of the bent-core liquid crystal 4-chlororesorcinol bis[4-(4-n-dodecyloxybenzoyloxy)benzoate] shows ferroelectric-type switching. Polarizing microscopic, electric current, dielectric, and dynamic light scattering studies lead us to propose that the IM phase is composed of interconnected orthoconic racemic smectic (Sm-CaPF) nanodomains with random layer orientations. Near the nematic phase, where the polarization can be saturated by electric fields, the system responds in a fashion analogous to the granular structure of a magnetic spin glass-in particular, we observed that the relaxation back to the nonpoled structure follows a similar, inverse logarithmic rule.
UR - http://www.scopus.com/inward/record.url?scp=27244446304&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=27244446304&partnerID=8YFLogxK
U2 - 10.1103/PhysRevE.72.021710
DO - 10.1103/PhysRevE.72.021710
M3 - Article
C2 - 16196588
AN - SCOPUS:27244446304
VL - 72
JO - Physical review. E
JF - Physical review. E
SN - 2470-0045
IS - 2
M1 - 021710
ER -