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</o:shapelayout></xml><![endif]--></head><body lang=SL link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Vabimo vas na 12. predavanje iz sklopa "Kolokviji na IJS" v letu 2017/18, ki bo <strong><span style='color:red'>v četrtek, 22. marca 2018, ob 13. uri </span></strong><span style='color:red'>v Veliki predavalnici Instituta »Jožef Stefan«</span> na Jamovi cesti 39 v Ljubljani. Napovednik predavanja najdete tudi na naslovu <a href="http://www.ijs.si/ijsw/Koledar_prireditev">http://www.ijs.si/ijsw/Koledar_prireditev</a>, posnetke preteklih predavanj<span style='color:blue'> </span>pa na <a href="http://videolectures.net/kolokviji_ijs">http://videolectures.net/kolokviji_ijs</a>. <o:p></o:p></p><p class=MsoNormal>Predavanja si lahko ogledate tudi na spletni televiziji IJS: <a href="https://video.arnes.si/portal/asset.zul?id=a2aIAUgdtfO8N3i6fkrIBRWV">https://video.arnes.si/portal/asset.zul?id=a2aIAUgdtfO8N3i6fkrIBRWV</a><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal style='margin-bottom:12.0pt'>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<o:p></o:p></p><p class=MsoNormal><b><span lang=EN-US style='mso-fareast-language:ZH-CN'>prof. Slobodan Žumer <o:p></o:p></span></b></p><p class=MsoNormal><i><span lang=EN-US style='mso-fareast-language:ZH-CN'>Univerza v Ljubljani in Institut Jožef Stefan, Ljubljana, Slovenija <o:p></o:p></span></i></p><p class=MsoNormal><b><span style='font-size:14.0pt'><o:p> </o:p></span></b></p><p class=MsoNormal align=center style='text-align:center'><b><span lang=EN-US style='font-size:16.0pt'>Frustrirana tekoče kristalna urejenost kot ključ do topološke mehke snovi<o:p></o:p></span></b></p><p class=MsoNormal style='text-align:justify'><span style='font-size:11.0pt;font-family:"Arial",sans-serif'><o:p> </o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt;text-align:justify'><span lang=EN-US>Za topološko mehko snov so značilni stabilni defekti v njeni orientacijski urejenosti. Kompleksnost defektnih struktur in njihova stabilnost temeljita na frustraciji, ki je pogojena s konfliktnostjo vplivov kiralnosti, anizotropne elastičnosti, ograjenosti in zunanjih polj. Pokazali bomo, kako enostavni tekoči kristali, kot so nematiki, kolesteriki in modre faze, tvorijo "topološko igrišče", kjer s kontrolirano frustracijo lahko stabiliziramo točkovne in linijske singularne defekte ter nesingularne solitonske strukture, kot so npr. skirmioni. Nasprotno od dobro poznane rabe tekočih kristalov v prikazalnikih, kjer so defekti moteč element, topološka mehka snov odpira nove možnosti za rabo v fotoniki, plazmoniki in senzoriki.<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><strong><span style='color:red'>Lepo vabljeni!</span></strong><strong><span style='font-weight:normal'><o:p></o:p></span></strong></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><span style='font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-language:SL'><br clear=all style='page-break-before:always'></span><p class=MsoNormal><span style='color:black'>We invite you to the 12th Institute colloquium in the academic year 2016/17. The colloquium will be held </span><b><span style='color:red'>on Thursday, March 22, 2018 at 1 PM</span></b><span style='color:red'> in <b>the main Institute lecture hall</b></span><span style='color:black'>, Jamova 39, Ljubljana. To read the abstract click </span><a href="http://www.ijs.si/ijsw/Koledar_prireditev">http://www.ijs.si/ijsw/Koledar_prireditev</a><span style='color:#1F497D'>. </span><span style='color:black'>Past colloquia are posted on</span><span style='color:#1F497D'> </span><a href="http://videolectures.net/kolokviji_ijs">http://videolectures.net/kolokviji_ijs</a><span style='color:#1F497D'>.<o:p></o:p></span></p><p class=MsoNormal>Lectures can also be viewed on the IJS Web TV: <a href="https://video.arnes.si/portal/asset.zul?id=a2aIAUgdtfO8N3i6fkrIBRWV">https://video.arnes.si/portal/asset.zul?id=a2aIAUgdtfO8N3i6fkrIBRWV</a><span style='color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal style='margin-bottom:12.0pt'>********************************************<b><o:p></o:p></b></p><p class=MsoNormal><b><span lang=EN-US>prof. Slobodan Žumer <o:p></o:p></span></b></p><p class=MsoNormal><i><span lang=EN-US>University of Ljubljana and Jožef Stefan Institute, Ljubljana, Slovenia <o:p></o:p></span></i></p><p class=MsoNormal><b><span style='font-size:16.0pt;mso-fareast-language:ZH-CN'><o:p> </o:p></span></b></p><p class=MsoNormal align=center style='text-align:center'><b><span lang=EN-US style='font-size:16.0pt'>Frustrated liquid-crystalline ordering as a key to topological soft matter<o:p></o:p></span></b></p><p class=MsoNormal align=center style='text-align:center'><o:p> </o:p></p><p class=MsoNormal><span lang=EN-US>Topological soft matter is characterized by stable defects in its orientational ordering. The complexity and stability of defect structures depend on the frustration caused by conflicting effects of chirality, anisotropic elasticity, confinement, and external fields. We will show how simple liquid crystals like nematic, cholesteric, and blue phases form a "topological playground" where, by controlled frustration, we can stabilize point & line singular defects, and non-singular solitonic structures like skyrmions. In contrast to the well-known use of liquid crystals in displays, where defects are undesired objects, topological soft matter opens up new possibilities for applications in photonics, plasmonics, and sensorics.<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Cordially invited! <o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p> </o:p></span></p></div></body></html>