<?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-04944520</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="2026-05-24T15:32:33+02:00"/>
      </publicationStmt>
      <sourceDesc>
        <p part="N">HAL API Platform</p>
      </sourceDesc>
    </fileDesc>
  </teiHeader>
  <text>
    <body>
      <listBibl>
        <biblFull>
          <titleStmt>
            <title xml:lang="en">Magnetic-field-induced nematic-nematic phase separation and droplet formation in colloidal goethite</title>
            <author role="aut">
              <persName>
                <forename type="first">E.</forename>
                <surname>van den Pol</surname>
              </persName>
              <idno type="halauthorid">3367492-0</idno>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">A.A.</forename>
                <surname>Verhoeff</surname>
              </persName>
              <idno type="halauthorid">3412222-0</idno>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">A.</forename>
                <surname>Lupascu</surname>
              </persName>
              <idno type="halauthorid">271443-0</idno>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">M.A.</forename>
                <surname>Diaconeasa</surname>
              </persName>
              <idno type="halauthorid">3412223-0</idno>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">P.</forename>
                <surname>Davidson</surname>
              </persName>
              <email type="md5">570b9a84161230c38e086ba5cf9b3daf</email>
              <email type="domain">u-psud.fr</email>
              <idno type="idhal" notation="string">patrick-davidson</idno>
              <idno type="idhal" notation="numeric">756007</idno>
              <idno type="halauthorid" notation="string">255977-756007</idno>
              <idno type="ORCID">https://orcid.org/0000-0002-1363-6062</idno>
              <idno type="IDREF">https://www.idref.fr/071541586</idno>
              <idno type="VIAF">https://viaf.org/viaf/107563130</idno>
              <affiliation ref="#struct-1208229"/>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">I.</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">259494-766992</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-1208229"/>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">B.W.M.</forename>
                <surname>Kuipers</surname>
              </persName>
              <idno type="halauthorid">3412224-0</idno>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">D.M.E.</forename>
                <surname>Thies-Weesie</surname>
              </persName>
              <idno type="halauthorid">3412225-0</idno>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">G.J.</forename>
                <surname>Vroege</surname>
              </persName>
              <idno type="halauthorid">3412226-0</idno>
            </author>
            <editor role="depositor">
              <persName>
                <forename>LPS</forename>
                <surname>Gestionnaire</surname>
              </persName>
              <email type="md5">892da8601da6d870e24ca8bf3ab08ad4</email>
              <email type="domain">u-psud.fr</email>
            </editor>
          </titleStmt>
          <editionStmt>
            <edition n="v1" type="current">
              <date type="whenSubmitted">2025-02-13 08:42:33</date>
              <date type="whenModified">2025-02-15 03:16:53</date>
              <date type="whenReleased">2025-02-13 08:42:33</date>
              <date type="whenProduced">2011</date>
            </edition>
            <respStmt>
              <resp>contributor</resp>
              <name key="1048593">
                <persName>
                  <forename>LPS</forename>
                  <surname>Gestionnaire</surname>
                </persName>
                <email type="md5">892da8601da6d870e24ca8bf3ab08ad4</email>
                <email type="domain">u-psud.fr</email>
              </name>
            </respStmt>
          </editionStmt>
          <publicationStmt>
            <distributor>CCSD</distributor>
            <idno type="halId">hal-04944520</idno>
            <idno type="halUri">https://hal.science/hal-04944520</idno>
            <idno type="halBibtex">vandenpol:hal-04944520</idno>
            <idno type="halRefHtml">&lt;i&gt;Journal of Physics: Condensed Matter&lt;/i&gt;, 2011, 23 (19), &lt;a target="_blank" href="https://dx.doi.org/10.1088/0953-8984/23/19/194108"&gt;&amp;#x27E8;10.1088/0953-8984/23/19/194108&amp;#x27E9;&lt;/a&gt;</idno>
            <idno type="halRef">Journal of Physics: Condensed Matter, 2011, 23 (19), &amp;#x27E8;10.1088/0953-8984/23/19/194108&amp;#x27E9;</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="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="GS-PHYSIQUE">Graduate School Physique</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>
          </seriesStmt>
          <notesStmt>
            <note type="audience" n="2">International</note>
            <note type="popular" n="0">No</note>
            <note type="peer" n="1">Yes</note>
          </notesStmt>
          <sourceDesc>
            <biblStruct>
              <analytic>
                <title xml:lang="en">Magnetic-field-induced nematic-nematic phase separation and droplet formation in colloidal goethite</title>
                <author role="aut">
                  <persName>
                    <forename type="first">E.</forename>
                    <surname>van den Pol</surname>
                  </persName>
                  <idno type="halauthorid">3367492-0</idno>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">A.A.</forename>
                    <surname>Verhoeff</surname>
                  </persName>
                  <idno type="halauthorid">3412222-0</idno>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">A.</forename>
                    <surname>Lupascu</surname>
                  </persName>
                  <idno type="halauthorid">271443-0</idno>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">M.A.</forename>
                    <surname>Diaconeasa</surname>
                  </persName>
                  <idno type="halauthorid">3412223-0</idno>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">P.</forename>
                    <surname>Davidson</surname>
                  </persName>
                  <email type="md5">570b9a84161230c38e086ba5cf9b3daf</email>
                  <email type="domain">u-psud.fr</email>
                  <idno type="idhal" notation="string">patrick-davidson</idno>
                  <idno type="idhal" notation="numeric">756007</idno>
                  <idno type="halauthorid" notation="string">255977-756007</idno>
                  <idno type="ORCID">https://orcid.org/0000-0002-1363-6062</idno>
                  <idno type="IDREF">https://www.idref.fr/071541586</idno>
                  <idno type="VIAF">https://viaf.org/viaf/107563130</idno>
                  <affiliation ref="#struct-1208229"/>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">I.</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">259494-766992</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-1208229"/>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">B.W.M.</forename>
                    <surname>Kuipers</surname>
                  </persName>
                  <idno type="halauthorid">3412224-0</idno>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">D.M.E.</forename>
                    <surname>Thies-Weesie</surname>
                  </persName>
                  <idno type="halauthorid">3412225-0</idno>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">G.J.</forename>
                    <surname>Vroege</surname>
                  </persName>
                  <idno type="halauthorid">3412226-0</idno>
                </author>
              </analytic>
              <monogr>
                <idno type="halJournalId" status="VALID">16023</idno>
                <idno type="issn">0953-8984</idno>
                <idno type="eissn">1361-648X</idno>
                <title level="j">Journal of Physics: Condensed Matter</title>
                <imprint>
                  <publisher>IOP Publishing [1989-....]</publisher>
                  <biblScope unit="volume">23</biblScope>
                  <biblScope unit="issue">19</biblScope>
                  <date type="datePub">2011</date>
                </imprint>
              </monogr>
              <idno type="doi">10.1088/0953-8984/23/19/194108</idno>
              <idno type="pubmed">21525548</idno>
            </biblStruct>
          </sourceDesc>
          <profileDesc>
            <langUsage>
              <language ident="en">English</language>
            </langUsage>
            <textClass>
              <keywords scheme="author">
                <term xml:lang="en">surface property</term>
                <term xml:lang="en">Sedimenting</term>
                <term xml:lang="en">article</term>
                <term xml:lang="en">birefringence</term>
                <term xml:lang="en">chemistry</term>
                <term xml:lang="en">crystallization</term>
                <term xml:lang="en">instrumentation</term>
                <term xml:lang="en">liquid crystal</term>
                <term xml:lang="en">magnetism</term>
                <term xml:lang="en">methodology</term>
                <term xml:lang="en">phase transition</term>
                <term xml:lang="en">polarization microscopy</term>
                <term xml:lang="en">Qualitative information</term>
                <term xml:lang="en">synthesis</term>
                <term xml:lang="en">Phase separation</term>
                <term xml:lang="en">Microscopy, Polarization</term>
                <term xml:lang="en">Magnetics</term>
                <term xml:lang="en">Liquid Crystals</term>
                <term xml:lang="en">Iron Compounds</term>
                <term xml:lang="en">Crystallization</term>
                <term xml:lang="en">Birefringence</term>
                <term xml:lang="en">iron derivative</term>
                <term xml:lang="en">Minerals</term>
                <term xml:lang="en">Phase Transition</term>
                <term xml:lang="en">Surface Properties</term>
                <term xml:lang="en">Drops</term>
                <term xml:lang="en">Liquid crystals</term>
                <term xml:lang="en">Liquids</term>
                <term xml:lang="en">Magnetic fields</term>
                <term xml:lang="en">Magnetic properties</term>
                <term xml:lang="en">Nematic liquid crystals</term>
                <term xml:lang="en">Polarization</term>
                <term xml:lang="en">ferric hydroxide</term>
                <term xml:lang="en">Microspheres</term>
                <term xml:lang="en">microsphere</term>
                <term xml:lang="en">mineral</term>
                <term xml:lang="en">Collective effects</term>
                <term xml:lang="en">Droplet formation</term>
                <term xml:lang="en">External magnetic field</term>
                <term xml:lang="en">Liquid crystal formation</term>
                <term xml:lang="en">Nematic droplets</term>
                <term xml:lang="en">Nematic tactoids</term>
                <term xml:lang="en">Order-parameter profile</term>
                <term xml:lang="en">Perpendicular orientation</term>
                <term xml:lang="en">Polarization microscopy</term>
              </keywords>
              <classCode scheme="halDomain" n="phys.cond.cm-scm">Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft]</classCode>
              <classCode scheme="halTypology" n="ART">Journal articles</classCode>
              <classCode scheme="halOldTypology" n="ART">Journal articles</classCode>
              <classCode scheme="halTreeTypology" n="ART">Journal articles</classCode>
            </textClass>
            <abstract xml:lang="en">
              <p>We demonstrate the suitability of polarization microscopy to study the recently discovered (parallel) nematic-(perpendicular) nematic phase separation. This novel type of phase transition is induced by applying an external magnetic field to a nematic liquid crystal of boardlike colloidal goethite and is due to an interplay between the intrinsic magnetic properties of goethite and the collective effect of liquid crystal formation. It is shown that the intense ochre colour of goethite does not preclude the use of polarization microscopy and interference colours, and that dichroism can give valuable qualitative information on the nature of the phases, their anchoring and their sedimentation and order parameter profiles. We also apply these techniques to study 'nematic-nematic tactoids': nematic droplets sedimenting within a nematic medium with mutually perpendicular orientations.</p>
            </abstract>
          </profileDesc>
        </biblFull>
      </listBibl>
    </body>
    <back>
      <listOrg type="structures">
        <org type="researchteam" xml:id="struct-1208229" status="OLD">
          <orgName>Laboratoire de Physique des Solides - MATRIX</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>
          </desc>
          <listRelation>
            <relation active="#struct-134" type="direct"/>
            <relation active="#struct-92966" type="indirect"/>
            <relation name="UMR8502" active="#struct-441569" type="indirect"/>
          </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-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-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>
      </listOrg>
    </back>
  </text>
</TEI>