Flexoelectric behavior of bimesogenic liquid crystals in the nematic phase – observation of a new self-assembly pattern at the twist-bend nematic and the nematic interface
Flexoelectric properties – the effective flexoelectric coefficient and flexoelectric polarization – are investigated for a bimesogenic liquid crystal CBC11CB with a twist bend nematic phase (N tb ). Results show that the effective flexoelectric coefficient is at least two times higher than that for...
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| Veröffentlicht in: | Journal of materials chemistry. C, Materials for optical and electronic devices Materials for optical and electronic devices, 2014-01, Vol.2 (38), p.8179-8184 |
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| container_end_page | 8184 |
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| container_issue | 38 |
| container_start_page | 8179 |
| container_title | Journal of materials chemistry. C, Materials for optical and electronic devices |
| container_volume | 2 |
| creator | Balachandran, R. Panov, V. P. Panarin, Y. P. Vij, J. K. Tamba, M. G. Mehl, G. H. Song, J. K. |
| description | Flexoelectric properties – the effective flexoelectric coefficient and flexoelectric polarization – are investigated for a bimesogenic liquid crystal CBC11CB with a twist bend nematic phase (N
tb
). Results show that the effective flexoelectric coefficient is at least two times higher than that for bimesogens that do not exhibit the N
tb
phase. The flexoelectric polarization for the N
tb
phase is also two times greater than that in the nematic phase. In a temperature gradient cell, we observe surprisingly a new phenomenon, in the bimesogens CBC7CB and CBC9CB and their mixtures with 5CB, of periodic self-assembly in the N phase close to the N–N
tb
phase transition temperature. This phenomenon is reminiscent of the self-deformation and spontaneous chirality that appear in the system. |
| doi_str_mv | 10.1039/C4TC01043D |
| format | Article |
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tb
). Results show that the effective flexoelectric coefficient is at least two times higher than that for bimesogens that do not exhibit the N
tb
phase. The flexoelectric polarization for the N
tb
phase is also two times greater than that in the nematic phase. In a temperature gradient cell, we observe surprisingly a new phenomenon, in the bimesogens CBC7CB and CBC9CB and their mixtures with 5CB, of periodic self-assembly in the N phase close to the N–N
tb
phase transition temperature. This phenomenon is reminiscent of the self-deformation and spontaneous chirality that appear in the system.</description><identifier>ISSN: 2050-7526</identifier><identifier>EISSN: 2050-7534</identifier><identifier>DOI: 10.1039/C4TC01043D</identifier><language>eng</language><subject>Chirality ; Coefficients ; Liquid crystals ; Nematic ; Phase transformations ; Polarization ; Self assembly ; Temperature gradient</subject><ispartof>Journal of materials chemistry. C, Materials for optical and electronic devices, 2014-01, Vol.2 (38), p.8179-8184</ispartof><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c300t-c24381297c0b3b8a4769c389d8f64abe75fad007970fa07b077aa6d3c469b73f3</citedby><cites>FETCH-LOGICAL-c300t-c24381297c0b3b8a4769c389d8f64abe75fad007970fa07b077aa6d3c469b73f3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,777,781,27905,27906</link.rule.ids></links><search><creatorcontrib>Balachandran, R.</creatorcontrib><creatorcontrib>Panov, V. P.</creatorcontrib><creatorcontrib>Panarin, Y. P.</creatorcontrib><creatorcontrib>Vij, J. K.</creatorcontrib><creatorcontrib>Tamba, M. G.</creatorcontrib><creatorcontrib>Mehl, G. H.</creatorcontrib><creatorcontrib>Song, J. K.</creatorcontrib><title>Flexoelectric behavior of bimesogenic liquid crystals in the nematic phase – observation of a new self-assembly pattern at the twist-bend nematic and the nematic interface</title><title>Journal of materials chemistry. C, Materials for optical and electronic devices</title><description>Flexoelectric properties – the effective flexoelectric coefficient and flexoelectric polarization – are investigated for a bimesogenic liquid crystal CBC11CB with a twist bend nematic phase (N
tb
). Results show that the effective flexoelectric coefficient is at least two times higher than that for bimesogens that do not exhibit the N
tb
phase. The flexoelectric polarization for the N
tb
phase is also two times greater than that in the nematic phase. In a temperature gradient cell, we observe surprisingly a new phenomenon, in the bimesogens CBC7CB and CBC9CB and their mixtures with 5CB, of periodic self-assembly in the N phase close to the N–N
tb
phase transition temperature. This phenomenon is reminiscent of the self-deformation and spontaneous chirality that appear in the system.</description><subject>Chirality</subject><subject>Coefficients</subject><subject>Liquid crystals</subject><subject>Nematic</subject><subject>Phase transformations</subject><subject>Polarization</subject><subject>Self assembly</subject><subject>Temperature gradient</subject><issn>2050-7526</issn><issn>2050-7534</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNpNkUFOwzAQRSMEEgi64QReIqTAJE7jZIkKBSQkNrCOxs6YGiVxa7uU7rgD5-BSnAQXUGE28_Xnz5vFJMlxBmcZ8Pp8UjxMIIOCX-4kBzmMIRVjXuxudV7uJyPvnyFWlZVVWR8kH9OOXi11pIIzikma4YuxjlnNpOnJ2ycaot-ZxdK0TLm1D9h5ZgYWZsQG6jHE8XyGntjn2zuz0pN7iaYdNgyMkRXz1OkUvadedms2xxDIDQzDNyOsjA-ppKHd4jDq_3gzxAWNio6SPR3P0-i3HyaP06uHyU16d399O7m4SxUHCKnKC15leS0USC4rLERZK17VbaXLAiWJscYWQNQCNIKQIARi2XJVlLUUXPPD5OSHO3d2sSQfmt54RV2HA9mlb7IyB6g58CJGT3-iylnvHelm7kyPbt1k0Gze0vy9hX8BNkCDjg</recordid><startdate>20140101</startdate><enddate>20140101</enddate><creator>Balachandran, R.</creator><creator>Panov, V. P.</creator><creator>Panarin, Y. P.</creator><creator>Vij, J. K.</creator><creator>Tamba, M. G.</creator><creator>Mehl, G. H.</creator><creator>Song, J. K.</creator><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20140101</creationdate><title>Flexoelectric behavior of bimesogenic liquid crystals in the nematic phase – observation of a new self-assembly pattern at the twist-bend nematic and the nematic interface</title><author>Balachandran, R. ; Panov, V. P. ; Panarin, Y. P. ; Vij, J. K. ; Tamba, M. G. ; Mehl, G. H. ; Song, J. K.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c300t-c24381297c0b3b8a4769c389d8f64abe75fad007970fa07b077aa6d3c469b73f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Chirality</topic><topic>Coefficients</topic><topic>Liquid crystals</topic><topic>Nematic</topic><topic>Phase transformations</topic><topic>Polarization</topic><topic>Self assembly</topic><topic>Temperature gradient</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Balachandran, R.</creatorcontrib><creatorcontrib>Panov, V. P.</creatorcontrib><creatorcontrib>Panarin, Y. P.</creatorcontrib><creatorcontrib>Vij, J. K.</creatorcontrib><creatorcontrib>Tamba, M. G.</creatorcontrib><creatorcontrib>Mehl, G. H.</creatorcontrib><creatorcontrib>Song, J. K.</creatorcontrib><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of materials chemistry. C, Materials for optical and electronic devices</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Balachandran, R.</au><au>Panov, V. P.</au><au>Panarin, Y. P.</au><au>Vij, J. K.</au><au>Tamba, M. G.</au><au>Mehl, G. H.</au><au>Song, J. K.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Flexoelectric behavior of bimesogenic liquid crystals in the nematic phase – observation of a new self-assembly pattern at the twist-bend nematic and the nematic interface</atitle><jtitle>Journal of materials chemistry. C, Materials for optical and electronic devices</jtitle><date>2014-01-01</date><risdate>2014</risdate><volume>2</volume><issue>38</issue><spage>8179</spage><epage>8184</epage><pages>8179-8184</pages><issn>2050-7526</issn><eissn>2050-7534</eissn><abstract>Flexoelectric properties – the effective flexoelectric coefficient and flexoelectric polarization – are investigated for a bimesogenic liquid crystal CBC11CB with a twist bend nematic phase (N
tb
). Results show that the effective flexoelectric coefficient is at least two times higher than that for bimesogens that do not exhibit the N
tb
phase. The flexoelectric polarization for the N
tb
phase is also two times greater than that in the nematic phase. In a temperature gradient cell, we observe surprisingly a new phenomenon, in the bimesogens CBC7CB and CBC9CB and their mixtures with 5CB, of periodic self-assembly in the N phase close to the N–N
tb
phase transition temperature. This phenomenon is reminiscent of the self-deformation and spontaneous chirality that appear in the system.</abstract><doi>10.1039/C4TC01043D</doi><tpages>6</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | Journal of materials chemistry. C, Materials for optical and electronic devices, 2014-01, Vol.2 (38), p.8179-8184 |
| issn | 2050-7526 2050-7534 |
| language | eng |
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| source | Royal Society Of Chemistry Journals 2008-; Alma/SFX Local Collection |
| subjects | Chirality Coefficients Liquid crystals Nematic Phase transformations Polarization Self assembly Temperature gradient |
| title | Flexoelectric behavior of bimesogenic liquid crystals in the nematic phase – observation of a new self-assembly pattern at the twist-bend nematic and the nematic interface |
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