Chiral Incommensurate Helical Phase in a Smectic of Achiral Bent-Core Mesogens
An achiral, bent-core mesogen forms several tilted smectic liquid crystal phases, including a nonpolar, achiral de Vries smectic A which transitions to a chiral, ferroelectric state in applied electric fields above a threshold. At lower temperature, a chiral, ferrielectric phase with a periodic, sup...
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| Veröffentlicht in: | Physical review letters 2019-03, Vol.122 (10), p.107801-107801, Article 107801 |
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| container_end_page | 107801 |
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| creator | Green, Adam A S Tuchband, Michael R Shao, Renfan Shen, Yongqiang Visvanathan, Rayshan Duncan, Alexandra E Lehmann, Anne Tschierske, Carsten Carlson, Eric D Guzman, Edward Kolber, Maria Walba, David M Park, Cheol S Glaser, Matthew A Maclennan, Joseph E Clark, Noel A |
| description | An achiral, bent-core mesogen forms several tilted smectic liquid crystal phases, including a nonpolar, achiral de Vries smectic A which transitions to a chiral, ferroelectric state in applied electric fields above a threshold. At lower temperature, a chiral, ferrielectric phase with a periodic, supermolecular modulation of the tilt azimuth, indicated by a Bragg peak in carbon-edge resonant soft x-ray scattering, is observed. The absence of a corresponding resonant umklapp peak identifies the superlayer structure as a twist-bend-like helix that is only weakly modulated by the smectic layering. |
| doi_str_mv | 10.1103/PhysRevLett.122.107801 |
| format | Article |
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The absence of a corresponding resonant umklapp peak identifies the superlayer structure as a twist-bend-like helix that is only weakly modulated by the smectic layering.</description><subject>Bragg curve</subject><subject>Electric fields</subject><subject>Ferroelectric materials</subject><subject>Ferroelectricity</subject><subject>Smectic liquid crystals</subject><subject>Soft x rays</subject><subject>X-ray scattering</subject><issn>0031-9007</issn><issn>1079-7114</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNpdkU1P3DAQhi1UBAvlL6CovfSSxWMbJz5uV-VDWmBF27PlOBM2qySmtoO0_x6vAhXi5JH1vDNjP4ScA50DUH6x3uzCI76sMMY5MDYHWpQUDsgsFSovAMQXMqOUQ64oLY7JSQhbSikwWR6RY04VZ5KVM3K_3LTedNntYF3f4xBGbyJmN9i1Nl2vNyZg1g6ZyX73aGNrM9dkCzuFfuIQ86XzmN1hcE8p_ZUcNqYLePZ2npK_V7_-LG_y1cP17XKxyq0AEfMSZWkLYFxYrBrJ-SVFUVaillRwhbZglitRpWUL1Shby6pRAIaXsq6VMoKfkm9TXxdiq4NtI9qNdcOQdtQglGIgE_Rjgp69-zdiiLpvg8WuMwO6MWjGKBSQfmWPfv-Ebt3oh_SEPVUAv1RqP1VOlPUuBI-NfvZtb_xOA9V7LfqDFp206ElLCp6_tR-rHuv_sXcP_BVaRoj0</recordid><startdate>20190315</startdate><enddate>20190315</enddate><creator>Green, Adam A S</creator><creator>Tuchband, Michael R</creator><creator>Shao, Renfan</creator><creator>Shen, Yongqiang</creator><creator>Visvanathan, Rayshan</creator><creator>Duncan, Alexandra E</creator><creator>Lehmann, Anne</creator><creator>Tschierske, Carsten</creator><creator>Carlson, Eric D</creator><creator>Guzman, Edward</creator><creator>Kolber, Maria</creator><creator>Walba, David M</creator><creator>Park, Cheol S</creator><creator>Glaser, Matthew A</creator><creator>Maclennan, Joseph E</creator><creator>Clark, Noel A</creator><general>American Physical Society</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>7X8</scope><scope>OTOTI</scope></search><sort><creationdate>20190315</creationdate><title>Chiral Incommensurate Helical Phase in a Smectic of Achiral Bent-Core Mesogens</title><author>Green, Adam A S ; 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| ispartof | Physical review letters, 2019-03, Vol.122 (10), p.107801-107801, Article 107801 |
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| source | American Physical Society Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals |
| subjects | Bragg curve Electric fields Ferroelectric materials Ferroelectricity Smectic liquid crystals Soft x rays X-ray scattering |
| title | Chiral Incommensurate Helical Phase in a Smectic of Achiral Bent-Core Mesogens |
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