Chemically induced splay nematic phase with micron scale periodicity
Nematic liquid crystals lack positional order of their constituent molecules, which share an average orientational order only. Modulated nematic liquid crystal phases also lack positional order, but possess a periodic variation in this direction of average orientation. In the recently discovered spl...
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description | Nematic liquid crystals lack positional order of their constituent molecules, which share an average orientational order only. Modulated nematic liquid crystal phases also lack positional order, but possess a periodic variation in this direction of average orientation. In the recently discovered splay nematic (N
S
) phase the average orientational order is augmented with a periodic splay deformation of orientation perpendicular to the director. In this communication we report the first example of a splay nematic phase which is chemically induced by mixing two materials, neither of which exhibit the N
S
phase. The splay-nematic phase is identified based on its optical textures, X-ray scattering patterns, and small enthalpy of the associated phase transition. We measure the splay periodicity optically, finding it to be ∼9 μm. This unexpected generation of the splay-nematic phase through binary mixtures offers a new route to materials which exhibit this phase which complements ongoing studies into structure-property relationships and could accelerate the development of technologies utilising this remarkable polar nematic variant.
We find that the splay nematic phase can be chemically induced in binary mixtures of two materials, neither of which exhibits the splay nematic phase in their neat state. |
doi_str_mv | 10.1039/c9sm02143d |
format | Article |
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S
) phase the average orientational order is augmented with a periodic splay deformation of orientation perpendicular to the director. In this communication we report the first example of a splay nematic phase which is chemically induced by mixing two materials, neither of which exhibit the N
S
phase. The splay-nematic phase is identified based on its optical textures, X-ray scattering patterns, and small enthalpy of the associated phase transition. We measure the splay periodicity optically, finding it to be ∼9 μm. This unexpected generation of the splay-nematic phase through binary mixtures offers a new route to materials which exhibit this phase which complements ongoing studies into structure-property relationships and could accelerate the development of technologies utilising this remarkable polar nematic variant.
We find that the splay nematic phase can be chemically induced in binary mixtures of two materials, neither of which exhibits the splay nematic phase in their neat state.</description><identifier>ISSN: 1744-683X</identifier><identifier>EISSN: 1744-6848</identifier><identifier>DOI: 10.1039/c9sm02143d</identifier><identifier>PMID: 31833523</identifier><language>eng</language><publisher>England: Royal Society of Chemistry</publisher><subject>Binary mixtures ; Crystal structure ; Crystals ; Enthalpy ; Liquid crystals ; Nematic crystals ; Organic chemistry ; Periodicity ; Phase transitions ; X-ray scattering</subject><ispartof>Soft matter, 2020-01, Vol.16 (2), p.324-329</ispartof><rights>Copyright Royal Society of Chemistry 2020</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c374t-63e27dc8e652caa196fe9fed6f10d77f19b506b35009293b9d164caf250ab0693</citedby><cites>FETCH-LOGICAL-c374t-63e27dc8e652caa196fe9fed6f10d77f19b506b35009293b9d164caf250ab0693</cites><orcidid>0000-0001-9816-9661</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/31833523$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Connor, Perri L. M</creatorcontrib><creatorcontrib>Mandle, Richard J</creatorcontrib><title>Chemically induced splay nematic phase with micron scale periodicity</title><title>Soft matter</title><addtitle>Soft Matter</addtitle><description>Nematic liquid crystals lack positional order of their constituent molecules, which share an average orientational order only. Modulated nematic liquid crystal phases also lack positional order, but possess a periodic variation in this direction of average orientation. In the recently discovered splay nematic (N
S
) phase the average orientational order is augmented with a periodic splay deformation of orientation perpendicular to the director. In this communication we report the first example of a splay nematic phase which is chemically induced by mixing two materials, neither of which exhibit the N
S
phase. The splay-nematic phase is identified based on its optical textures, X-ray scattering patterns, and small enthalpy of the associated phase transition. We measure the splay periodicity optically, finding it to be ∼9 μm. This unexpected generation of the splay-nematic phase through binary mixtures offers a new route to materials which exhibit this phase which complements ongoing studies into structure-property relationships and could accelerate the development of technologies utilising this remarkable polar nematic variant.
We find that the splay nematic phase can be chemically induced in binary mixtures of two materials, neither of which exhibits the splay nematic phase in their neat state.</description><subject>Binary mixtures</subject><subject>Crystal structure</subject><subject>Crystals</subject><subject>Enthalpy</subject><subject>Liquid crystals</subject><subject>Nematic crystals</subject><subject>Organic chemistry</subject><subject>Periodicity</subject><subject>Phase transitions</subject><subject>X-ray scattering</subject><issn>1744-683X</issn><issn>1744-6848</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNpd0c1LwzAYBvAgipvTi3el4EWEapK3TZujdH7BxIMK3kqapCyjXyYt0v_ezM0Jnt7A--MheYLQKcHXBAO_kdzVmJII1B6akiSKQpZG6f7uDB8TdOTcCmNII8IO0QRIChBTmKJ5ttS1kaKqxsA0apBaBa6rxBg0uha9kUG3FE4HX6ZfBh7atgmc5zrotDWtMtL04zE6KEXl9Ml2ztD7_d1b9hguXh6esttFKCGJ-pCBpomSqWYxlUIQzkrNS61YSbBKkpLwIsasgBhjTjkUXBEWSVHSGIsCMw4zdLnJ7Wz7OWjX57VxUleVaHQ7uJwCUJxwoMTTi3901Q628bdbK5ISjBPq1dVG-Xc5Z3WZd9bUwo45wfm62zzjr88_3c49Pt9GDkWt1Y7-lunB2QZYJ3fbv8-Bbz-pfR0</recordid><startdate>20200102</startdate><enddate>20200102</enddate><creator>Connor, Perri L. 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M ; Mandle, Richard J</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c374t-63e27dc8e652caa196fe9fed6f10d77f19b506b35009293b9d164caf250ab0693</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Binary mixtures</topic><topic>Crystal structure</topic><topic>Crystals</topic><topic>Enthalpy</topic><topic>Liquid crystals</topic><topic>Nematic crystals</topic><topic>Organic chemistry</topic><topic>Periodicity</topic><topic>Phase transitions</topic><topic>X-ray scattering</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Connor, Perri L. M</creatorcontrib><creatorcontrib>Mandle, Richard J</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>Aluminium Industry Abstracts</collection><collection>Biotechnology Research Abstracts</collection><collection>Ceramic Abstracts</collection><collection>Computer and Information Systems Abstracts</collection><collection>Corrosion Abstracts</collection><collection>Electronics & Communications Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Materials Business File</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Copper Technical Reference Library</collection><collection>Materials Research Database</collection><collection>ProQuest Computer Science Collection</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Computer and Information Systems Abstracts Academic</collection><collection>Computer and Information Systems Abstracts Professional</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>Soft matter</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Connor, Perri L. M</au><au>Mandle, Richard J</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Chemically induced splay nematic phase with micron scale periodicity</atitle><jtitle>Soft matter</jtitle><addtitle>Soft Matter</addtitle><date>2020-01-02</date><risdate>2020</risdate><volume>16</volume><issue>2</issue><spage>324</spage><epage>329</epage><pages>324-329</pages><issn>1744-683X</issn><eissn>1744-6848</eissn><abstract>Nematic liquid crystals lack positional order of their constituent molecules, which share an average orientational order only. Modulated nematic liquid crystal phases also lack positional order, but possess a periodic variation in this direction of average orientation. In the recently discovered splay nematic (N
S
) phase the average orientational order is augmented with a periodic splay deformation of orientation perpendicular to the director. In this communication we report the first example of a splay nematic phase which is chemically induced by mixing two materials, neither of which exhibit the N
S
phase. The splay-nematic phase is identified based on its optical textures, X-ray scattering patterns, and small enthalpy of the associated phase transition. We measure the splay periodicity optically, finding it to be ∼9 μm. This unexpected generation of the splay-nematic phase through binary mixtures offers a new route to materials which exhibit this phase which complements ongoing studies into structure-property relationships and could accelerate the development of technologies utilising this remarkable polar nematic variant.
We find that the splay nematic phase can be chemically induced in binary mixtures of two materials, neither of which exhibits the splay nematic phase in their neat state.</abstract><cop>England</cop><pub>Royal Society of Chemistry</pub><pmid>31833523</pmid><doi>10.1039/c9sm02143d</doi><tpages>6</tpages><orcidid>https://orcid.org/0000-0001-9816-9661</orcidid></addata></record> |
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source | Royal Society Of Chemistry Journals 2008-; Alma/SFX Local Collection |
subjects | Binary mixtures Crystal structure Crystals Enthalpy Liquid crystals Nematic crystals Organic chemistry Periodicity Phase transitions X-ray scattering |
title | Chemically induced splay nematic phase with micron scale periodicity |
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