<?xml version="1.0" encoding="utf-8"?>
<TEI xmlns="http://www.tei-c.org/ns/1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:hal="http://hal.archives-ouvertes.fr/" xmlns:gml="http://www.opengis.net/gml/3.3/" xmlns:gmlce="http://www.opengis.net/gml/3.3/ce" version="1.1" xsi:schemaLocation="http://www.tei-c.org/ns/1.0 http://api.archives-ouvertes.fr/documents/aofr-sword.xsd">
  <teiHeader>
    <fileDesc>
      <titleStmt>
        <title>HAL TEI export of hal-02179553</title>
      </titleStmt>
      <publicationStmt>
        <distributor>CCSD</distributor>
        <availability status="restricted">
          <licence target="https://creativecommons.org/publicdomain/zero/1.0/">CC0 1.0 - Universal</licence>
        </availability>
        <date when="2026-05-22T15:20:03+02:00"/>
      </publicationStmt>
      <sourceDesc>
        <p part="N">HAL API Platform</p>
      </sourceDesc>
    </fileDesc>
  </teiHeader>
  <text>
    <body>
      <listBibl>
        <biblFull>
          <titleStmt>
            <title xml:lang="en">Influence of anchoring conditions on the stripe patterns of the NTB phase</title>
            <author role="aut">
              <persName>
                <forename type="first">Abir</forename>
                <surname>Aouini</surname>
              </persName>
              <email type="md5">ae18830790613bb926e692c1e913b6f0</email>
              <email type="domain">umontpellier.fr</email>
              <idno type="idhal" notation="numeric">1039503</idno>
              <idno type="halauthorid" notation="string">1465934-1039503</idno>
              <affiliation ref="#struct-136223"/>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">Maurizio</forename>
                <surname>Nobili</surname>
              </persName>
              <email type="md5">4fbc50805784565971a1e6b4036be02f</email>
              <email type="domain">lcvn.univ-montp2.fr</email>
              <idno type="idhal" notation="numeric">1247967</idno>
              <idno type="halauthorid" notation="string">236554-1247967</idno>
              <idno type="ORCID">https://orcid.org/0000-0003-4762-3806</idno>
              <idno type="IDREF">https://www.idref.fr/116126310</idno>
              <idno type="VIAF">https://viaf.org/viaf/172448225</idno>
              <affiliation ref="#struct-136223"/>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">Ivan</forename>
                <surname>Dozov</surname>
              </persName>
              <email type="md5">abf8194b0952525d6f60a76341d80ecb</email>
              <email type="domain">u-psud.fr</email>
              <idno type="idhal" notation="numeric">766992</idno>
              <idno type="halauthorid" notation="string">663163-766992</idno>
              <idno type="ORCID">https://orcid.org/0000-0002-9088-7471</idno>
              <idno type="RESEARCHERID">http://www.researcherid.com/rid/DVM-5065-2022</idno>
              <affiliation ref="#struct-134"/>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">Daniel</forename>
                <surname>Stoenescu</surname>
              </persName>
              <email type="md5">74916a07c2ff7b7e3aaa73832335b1c0</email>
              <email type="domain">telecom-bretagne.eu</email>
              <idno type="idhal" notation="numeric">883889</idno>
              <idno type="halauthorid" notation="string">512250-883889</idno>
              <idno type="ORCID">https://orcid.org/0000-0002-1490-249X</idno>
              <affiliation ref="#struct-481355"/>
            </author>
            <author role="crp">
              <persName>
                <forename type="first">Christophe</forename>
                <surname>Blanc</surname>
              </persName>
              <email type="md5">97ae41f83488bcb8e6a664847c24e0b8</email>
              <email type="domain">umontpellier.fr</email>
              <idno type="idhal" notation="string">christophe-blanc</idno>
              <idno type="idhal" notation="numeric">5277</idno>
              <idno type="halauthorid" notation="string">924-5277</idno>
              <idno type="RESEARCHERID">http://www.researcherid.com/rid/K-4677-2012</idno>
              <idno type="ORCID">https://orcid.org/0000-0002-8470-478X</idno>
              <idno type="IDREF">https://www.idref.fr/11612606X</idno>
              <idno type="RESEARCHERID">http://www.researcherid.com/rid/http://www.researcherid.com/rid/K-4677-2012</idno>
              <affiliation ref="#struct-136223"/>
            </author>
            <editor role="depositor">
              <persName>
                <forename>L2c</forename>
                <surname>Aigle</surname>
              </persName>
              <email type="md5">896b4172ec7889f15eabdfaa746b8133</email>
              <email type="domain">umontpellier.fr</email>
            </editor>
            <funder ref="#projanr-45588"/>
          </titleStmt>
          <editionStmt>
            <edition n="v1" type="current">
              <date type="whenSubmitted">2019-07-10 21:13:41</date>
              <date type="whenModified">2026-01-19 16:46:19</date>
              <date type="whenReleased">2019-07-10 21:13:41</date>
              <date type="whenProduced">2019-06-30</date>
            </edition>
            <respStmt>
              <resp>contributor</resp>
              <name key="157154">
                <persName>
                  <forename>L2c</forename>
                  <surname>Aigle</surname>
                </persName>
                <email type="md5">896b4172ec7889f15eabdfaa746b8133</email>
                <email type="domain">umontpellier.fr</email>
              </name>
            </respStmt>
          </editionStmt>
          <publicationStmt>
            <distributor>CCSD</distributor>
            <idno type="halId">hal-02179553</idno>
            <idno type="halUri">https://hal.science/hal-02179553</idno>
            <idno type="halBibtex">aouini:hal-02179553</idno>
            <idno type="halRefHtml">&lt;i&gt;15th European Conference on Liquid Crystals (ECLC 2019)&lt;/i&gt;, Jun 2019, Wroclaw, Poland</idno>
            <idno type="halRef">15th European Conference on Liquid Crystals (ECLC 2019), Jun 2019, Wroclaw, Poland</idno>
            <availability status="restricted"/>
          </publicationStmt>
          <seriesStmt>
            <idno type="stamp" n="CNRS">CNRS - Centre national de la recherche scientifique</idno>
            <idno type="stamp" n="UNIV-PSUD">Université Paris Sud - Paris XI</idno>
            <idno type="stamp" n="L2C">Laboratoire Charles Coulomb (L2C)</idno>
            <idno type="stamp" n="UNIV-PARIS-SACLAY">Université Paris-Saclay</idno>
            <idno type="stamp" n="UNIV-PSUD-SACLAY" corresp="UNIV-PARIS-SACLAY">Université Paris Sud pour Paris Saclay</idno>
            <idno type="stamp" n="MIPS">Mathématiques, Informatique, Physique et Systèmes</idno>
            <idno type="stamp" n="UNIV-MONTPELLIER">Université de Montpellier</idno>
            <idno type="stamp" n="INSTITUTS-TELECOM">composantes instituts telecom </idno>
            <idno type="stamp" n="ANR">ANR</idno>
            <idno type="stamp" n="GS-CHIMIE">Graduate School Chimie</idno>
            <idno type="stamp" n="GS-PHYSIQUE">Graduate School Physique</idno>
            <idno type="stamp" n="INSTITUT-SCIENCES-LUMIERE">Institut des Sciences de la Lumière</idno>
            <idno type="stamp" n="LPSO">Laboratoire de Physique des Solides d'Orsay</idno>
            <idno type="stamp" n="URP-LPS">Laboratoire de Psychologie Sociale : contextes et régulation</idno>
            <idno type="stamp" n="UM-2015-2021" corresp="UNIV-MONTPELLIER">Université de Montpellier (2015-2021)</idno>
          </seriesStmt>
          <notesStmt>
            <note type="audience" n="2">International</note>
            <note type="invited" n="0">No</note>
            <note type="popular" n="0">No</note>
            <note type="peer" n="0">No</note>
            <note type="proceedings" n="0">No</note>
          </notesStmt>
          <sourceDesc>
            <biblStruct>
              <analytic>
                <title xml:lang="en">Influence of anchoring conditions on the stripe patterns of the NTB phase</title>
                <author role="aut">
                  <persName>
                    <forename type="first">Abir</forename>
                    <surname>Aouini</surname>
                  </persName>
                  <email type="md5">ae18830790613bb926e692c1e913b6f0</email>
                  <email type="domain">umontpellier.fr</email>
                  <idno type="idhal" notation="numeric">1039503</idno>
                  <idno type="halauthorid" notation="string">1465934-1039503</idno>
                  <affiliation ref="#struct-136223"/>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">Maurizio</forename>
                    <surname>Nobili</surname>
                  </persName>
                  <email type="md5">4fbc50805784565971a1e6b4036be02f</email>
                  <email type="domain">lcvn.univ-montp2.fr</email>
                  <idno type="idhal" notation="numeric">1247967</idno>
                  <idno type="halauthorid" notation="string">236554-1247967</idno>
                  <idno type="ORCID">https://orcid.org/0000-0003-4762-3806</idno>
                  <idno type="IDREF">https://www.idref.fr/116126310</idno>
                  <idno type="VIAF">https://viaf.org/viaf/172448225</idno>
                  <affiliation ref="#struct-136223"/>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">Ivan</forename>
                    <surname>Dozov</surname>
                  </persName>
                  <email type="md5">abf8194b0952525d6f60a76341d80ecb</email>
                  <email type="domain">u-psud.fr</email>
                  <idno type="idhal" notation="numeric">766992</idno>
                  <idno type="halauthorid" notation="string">663163-766992</idno>
                  <idno type="ORCID">https://orcid.org/0000-0002-9088-7471</idno>
                  <idno type="RESEARCHERID">http://www.researcherid.com/rid/DVM-5065-2022</idno>
                  <affiliation ref="#struct-134"/>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">Daniel</forename>
                    <surname>Stoenescu</surname>
                  </persName>
                  <email type="md5">74916a07c2ff7b7e3aaa73832335b1c0</email>
                  <email type="domain">telecom-bretagne.eu</email>
                  <idno type="idhal" notation="numeric">883889</idno>
                  <idno type="halauthorid" notation="string">512250-883889</idno>
                  <idno type="ORCID">https://orcid.org/0000-0002-1490-249X</idno>
                  <affiliation ref="#struct-481355"/>
                </author>
                <author role="crp">
                  <persName>
                    <forename type="first">Christophe</forename>
                    <surname>Blanc</surname>
                  </persName>
                  <email type="md5">97ae41f83488bcb8e6a664847c24e0b8</email>
                  <email type="domain">umontpellier.fr</email>
                  <idno type="idhal" notation="string">christophe-blanc</idno>
                  <idno type="idhal" notation="numeric">5277</idno>
                  <idno type="halauthorid" notation="string">924-5277</idno>
                  <idno type="RESEARCHERID">http://www.researcherid.com/rid/K-4677-2012</idno>
                  <idno type="ORCID">https://orcid.org/0000-0002-8470-478X</idno>
                  <idno type="IDREF">https://www.idref.fr/11612606X</idno>
                  <idno type="RESEARCHERID">http://www.researcherid.com/rid/http://www.researcherid.com/rid/K-4677-2012</idno>
                  <affiliation ref="#struct-136223"/>
                </author>
              </analytic>
              <monogr>
                <idno type="localRef">L2C:19-115</idno>
                <meeting>
                  <title>15th European Conference on Liquid Crystals (ECLC 2019)</title>
                  <date type="start">2019-06-30</date>
                  <date type="end">2019-07-05</date>
                  <settlement>Wroclaw</settlement>
                  <country key="PL">Poland</country>
                </meeting>
                <imprint/>
              </monogr>
            </biblStruct>
          </sourceDesc>
          <profileDesc>
            <langUsage>
              <language ident="en">English</language>
            </langUsage>
            <textClass>
              <classCode scheme="halDomain" n="phys.cond.cm-scm">Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft]</classCode>
              <classCode scheme="halDomain" n="spi.mat">Engineering Sciences [physics]/Materials</classCode>
              <classCode scheme="halTypology" n="COMM">Conference papers</classCode>
              <classCode scheme="halOldTypology" n="COMM">Conference papers</classCode>
              <classCode scheme="halTreeTypology" n="COMM">Conference papers</classCode>
            </textClass>
            <abstract xml:lang="en">
              <p>Heliconal nematic twist bend (NTB) phases are usually not well oriented in planar commercial cells, even in thin (~1 µm) ones where a micron-sized periodic texture is usually observed [1,2,3] (see Fig.1-a). The origin of the stripe patterns is attributed to the rapid shrinking of the pseudo-layers below the N-NTB phase transition temperature, which yields an undulation instability. The observed periodicity is found to be twice the cell gap [1].&lt;br&gt;We have explored the effect of the strength of the anchorings of the substrates on the resulting patterns. We used polymer aligning layers of tunable azimuthal and zenithal strengths to design liquid crystal cells with surface anchorings ranging from ultraweak to strong. We then have studied the patterns formed by the NTB phase of 1,7-bis-4-(4-cyanobiphenyl) heptane (CB7CB). We will show how the period of the stripes can be varied in a large range in cells of the same thickness but with different anchoring preparations.  With adequate anchoring conditions (see Fig.1-b-c), an excellent and spontaneous planar alignment of the NTB phase of CB7CB can be obtained much below the phase transition temperature. &lt;br&gt;[1] Panov V.P. et al; Spontaneous Periodic Deformations in Nonchiral Planar-Aligned Bimesogenswith a Nematic-Nematic Transition and a Negative Elastic Constant; Phys. Rev. Lett. ; 105; 167801; 2010.&lt;br&gt;[2] Challa P. K. et al; Twist-bend nematic liquid crystals in high magnetic fields; Phys. Rev. E: Stat., Nonlinear, Soft Matter Phys.;  89; 060501; 2014.&lt;br&gt;[3] Vaupotič N. et al.; Polarization Gratings Spontaneously Formed from a Helical Twist‐Bend Nematic Phase; Chem. Phys. Chem.; 19; 2566; 2018.&lt;br&gt;</p>
            </abstract>
          </profileDesc>
        </biblFull>
      </listBibl>
    </body>
    <back>
      <listOrg type="structures">
        <org type="laboratory" xml:id="struct-136223" status="OLD">
          <idno type="ISNI">0000000446872402</idno>
          <idno type="RNSR">201119402W</idno>
          <idno type="ROR">https://ror.org/02ftce284</idno>
          <orgName>Laboratoire Charles Coulomb</orgName>
          <orgName type="acronym">L2C</orgName>
          <date type="start">2011-01-01</date>
          <date type="end">2021-12-31</date>
          <desc>
            <address>
              <addrLine>1 place Eugène Bataillon Université Montpellier 34095 Montpellier Cedex 5</addrLine>
              <country key="FR"/>
            </address>
            <ref type="url">https://coulomb.umontpellier.fr</ref>
          </desc>
          <listRelation>
            <relation name="HR10M00506" active="#struct-410122" type="direct"/>
            <relation name="UMR5221" active="#struct-441569" type="direct"/>
          </listRelation>
        </org>
        <org type="laboratory" xml:id="struct-134" status="OLD">
          <orgName>Laboratoire de Physique des Solides</orgName>
          <orgName type="acronym">LPS</orgName>
          <date type="end">2019-12-31</date>
          <desc>
            <address>
              <addrLine>Bat. 510 91405 Orsay cedex</addrLine>
              <country key="FR"/>
            </address>
            <ref type="url">http://www.lps.u-psud.fr/</ref>
          </desc>
          <listRelation>
            <relation active="#struct-92966" type="direct"/>
            <relation name="UMR8502" active="#struct-441569" type="direct"/>
          </listRelation>
        </org>
        <org type="institution" xml:id="struct-481355" status="VALID">
          <idno type="IdRef">202743233</idno>
          <idno type="ROR">https://ror.org/030hj3061</idno>
          <orgName>IMT Atlantique</orgName>
          <orgName type="acronym">IMT Atlantique</orgName>
          <date type="start">2017-01-01</date>
          <desc>
            <address>
              <addrLine>Campus Brest : Technopôle Brest-Iroise CS 8381829238 BREST Cedex 3 -Campus Nantes : 4, rue Alfred Kastler- La chantrerie 44300 NANTES -Campus Rennes :  2 Rue de la Châtaigneraie, 35510 CESSON SEVIGNE</addrLine>
              <country key="FR"/>
            </address>
            <ref type="url">https://www.imt-atlantique.fr</ref>
          </desc>
          <listRelation>
            <relation active="#struct-302102" type="direct"/>
          </listRelation>
        </org>
        <org type="institution" xml:id="struct-410122" status="OLD">
          <idno type="ISNI">0000000120970141</idno>
          <idno type="ROR">https://ror.org/051escj72</idno>
          <orgName>Université de Montpellier</orgName>
          <orgName type="acronym">UM</orgName>
          <date type="end">2021-12-31</date>
          <desc>
            <address>
              <addrLine>163 rue Auguste Broussonnet - 34090 Montpellier</addrLine>
              <country key="FR"/>
            </address>
            <ref type="url">http://www.umontpellier.fr/</ref>
          </desc>
        </org>
        <org type="regroupinstitution" xml:id="struct-441569" status="VALID">
          <idno type="IdRef">02636817X</idno>
          <idno type="ISNI">0000000122597504</idno>
          <idno type="ROR">https://ror.org/02feahw73</idno>
          <orgName>Centre National de la Recherche Scientifique</orgName>
          <orgName type="acronym">CNRS</orgName>
          <date type="start">1939-10-19</date>
          <desc>
            <address>
              <country key="FR"/>
            </address>
            <ref type="url">https://www.cnrs.fr/</ref>
          </desc>
        </org>
        <org type="institution" xml:id="struct-92966" status="OLD">
          <idno type="ROR">https://ror.org/028rypz17</idno>
          <orgName>Université Paris-Sud - Paris 11</orgName>
          <orgName type="acronym">UP11</orgName>
          <date type="end">2019-12-31</date>
          <desc>
            <address>
              <addrLine>Bâtiment 300 - 91405 Orsay cedex</addrLine>
              <country key="FR"/>
            </address>
            <ref type="url">http://www.u-psud.fr/</ref>
          </desc>
        </org>
        <org type="regroupinstitution" xml:id="struct-302102" status="VALID">
          <idno type="IdRef">192427156</idno>
          <idno type="ISNI">000000012202567X</idno>
          <idno type="ROR">https://ror.org/025vp2923</idno>
          <idno type="Wikidata">Q27962533</idno>
          <orgName>Institut Mines-Télécom [Paris]</orgName>
          <orgName type="acronym">IMT</orgName>
          <date type="start">2012-03-01</date>
          <desc>
            <address>
              <addrLine>19 Place Marguerite Perey, 91120 Palaiseau</addrLine>
              <country key="FR"/>
            </address>
            <ref type="url">https://www.imt.fr/</ref>
          </desc>
        </org>
      </listOrg>
      <listOrg type="projects">
        <org type="anrProject" xml:id="projanr-45588" status="VALID">
          <idno type="anr">ANR-15-CE24-0012</idno>
          <orgName>BESTNEMATICS</orgName>
          <desc>Nématiques à molécules courbées possédant une élasticité négative et une modulation spontanée à pas courts</desc>
          <date type="start">2015</date>
        </org>
      </listOrg>
    </back>
  </text>
</TEI>