2021
DOI: 10.1080/02678292.2021.1921867
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Ferroelectric nematic phase at and below room temperature

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Cited by 110 publications
(92 citation statements)
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“…Thin films obtained by casting without any thermal treatment were used as reference in order to evaluate the influence of the ordering on electrical conduction. As can be seen in Figure 2 , the ordered films presented intense birefringence, with a fine Schlieren texture, indicating a nematic mesophase in which the azomethine rigid mesogens were preponderantly aligned parallel to a local director [ 22 , 23 , 24 , 25 ]. The texture clarity was correlated to the percentage of mesogen in the polymer, with more resolved textures observed for polymers containing 75% ( P2 ) or 50% ( P3 ) mesogens.…”
Section: Resultsmentioning
confidence: 99%
“…Thin films obtained by casting without any thermal treatment were used as reference in order to evaluate the influence of the ordering on electrical conduction. As can be seen in Figure 2 , the ordered films presented intense birefringence, with a fine Schlieren texture, indicating a nematic mesophase in which the azomethine rigid mesogens were preponderantly aligned parallel to a local director [ 22 , 23 , 24 , 25 ]. The texture clarity was correlated to the percentage of mesogen in the polymer, with more resolved textures observed for polymers containing 75% ( P2 ) or 50% ( P3 ) mesogens.…”
Section: Resultsmentioning
confidence: 99%
“…6a) which undergoes a direct Isotropic to NF transition. 37 Although the NF phase is monotropic, the melting point of this material is sufficiently low as to permit room temperature studies on the NF phase; below 20 °C the dielectric permittivity of the material is in excess of 20000. 37 Recently, Huang et al have reported two highly fluorinated rod-like mesogens which exhibit the NF phase (Figure 6b).…”
Section: Emerging Materials Classesmentioning
confidence: 99%
“…37 Although the NF phase is monotropic, the melting point of this material is sufficiently low as to permit room temperature studies on the NF phase; below 20 °C the dielectric permittivity of the material is in excess of 20000. 37 Recently, Huang et al have reported two highly fluorinated rod-like mesogens which exhibit the NF phase (Figure 6b). 38 As with all NF materials known to date, these materials feature polar groups (in this case, 1,3-dioxane, 2,5-difluorophenyl, nitrile) oriented in such a way to give a large longitudinal molecular electric dipole moment.…”
Section: Emerging Materials Classesmentioning
confidence: 99%
“…LCDs with response time in the range of microseconds are proper candidates for these applications. FLCs are characterized by response time in the range of microseconds due to the presence of the spontaneous polarization → P s (Figure 1) that canceled out in NLC due to symmetry [63][64][65][66]. Sensitivity to the electrical field sign also stems from the spontaneous polarization existence.…”
Section: Comparison Of the Electrooptic Response Of Nh-flcs With Nlcsmentioning
confidence: 99%