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</o:shapelayout></xml><![endif]--></head><body lang=SL link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Vabimo vas na 3. predavanje iz sklopa "Kolokviji na IJS" v letu 2018/19, ki bo <strong><span style='color:red'>v četrtek, 6. decembra 2018, ob 13. uri.<o:p></o:p></span></strong></p><p class=MsoNormal><strong><span style='color:red'><o:p> </o:p></span></strong></p><p class=MsoNormal><strong><span style='font-weight:normal'>Predavanje bo </span>izjemoma<span style='color:red'> </span></strong>v<span style='color:red'> <b>Kolarjevi predavalnici</b> </span>Instituta »Jožef Stefan« na Jamovi cesti 39 v Ljubljani. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>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>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<br><br><o:p></o:p></p><p class=MsoNormal><b><span lang=EN-US>prof. dr. Qi-Huo Wei<o:p></o:p></span></b></p><p class=MsoNormal><i><span lang=EN-US>Advanced Materials and Liquid Crystal Institute <o:p></o:p></span></i></p><p class=MsoNormal><i><span lang=EN-US>in Department of Physics, Kent State University, Kent, ZDA<o:p></o:p></span></i></p><p class=MsoNormal><i><span lang=EN-US><o:p> </o:p></span></i></p><p class=MsoNormal align=center style='text-align:center'><b><span style='font-size:14.0pt'>Zasučite molekule, kakor želite<o:p></o:p></span></b></p><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt;text-align:justify'>Tekoči kristali, ki jih tvorijo paličaste molekule, so prav posebna vrsta mehke snovi z izjemno odzivnostjo na zunanje sile. Metode za nadzor orientacije molekul so ključne tako za izdelavo kot za delovanje tekočekristalnih naprav, ki so popolnoma spremenile naše vsakdanje življenje. V tradicionalnih prikazalnikih je ureditev molekul na površini substrata uniformna. V predavanju bomo predstavili novo metodo, pri kateri s svetlobno šablono uredimo molekule v kompleksne 2D in 3D vzorce z ločljivostjo, manjšo od 1 mikrometra. Ta pristop sloni na t.i. plazmonskih metamaskah, s katerimi izdelamo poljubne polarizacijske vzorce in svetlobne šablone. Predstavili bomo osnovna načela tega pristopa in vrsto zanimivih možnosti uporabe vključno z mikrooptičnimi napravami za oblikovanje laserskega žarka, upravljanje kaotičnega gibanja bakterij in ustvarjanje topoloških defektov po želji.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt;text-align:justify'>Predavanje bo v angleščini.<o:p></o:p></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 align=center style='text-align:center'><span style='color:black'>*****</span><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:black;mso-fareast-language:EN-US'><o:p></o:p></span></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 3rd Institute colloquium in the academic year 2018/19. The colloquium will be held </span><b><span style='color:red'>on </span></b><b><span lang=EN-US style='color:red'>Thursday, </span><span style='color:red'>December 6, 2018 at 1 PM.<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='color:red'><o:p> </o:p></span></b></p><p class=MsoNormal><span lang=EN-US>On this occasion, the lecture will be held in<b><span style='color:red'> the Kolar lecture hall</span></b></span><b><span style='color:red'>, </span></b><span style='color:black'>Jamova 39, Ljubljana. <o:p></o:p></span></p><p class=MsoNormal><span style='color:black'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:black'>To read the abstract click </span><span style='color:#1F497D'><a href="http://www.ijs.si/ijsw/Koledar_prireditev">http://www.ijs.si/ijsw/Koledar_prireditev</a>. </span><span style='color:black'>Past colloquia are posted on</span><span style='color:#1F497D'> <a href="http://videolectures.net/kolokviji_ijs">http://videolectures.net/kolokviji_ijs</a>.</span><b><span style='color:red'><o:p></o:p></span></b></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. dr. Qi-Huo Wei<o:p></o:p></span></b></p><p class=MsoNormal><i><span lang=EN-US>Advanced Materials and Liquid Crystal Institute <o:p></o:p></span></i></p><p class=MsoNormal><i><span lang=EN-US>and Department of Physics, Kent State University, Kent, USA<o:p></o:p></span></i></p><p class=MsoNormal><i><span lang=EN-US><o:p> </o:p></span></i></p><p class=Default align=center style='text-align:center'><b><span style='font-size:14.0pt;font-family:"Times New Roman",serif;color:#202020;mso-fareast-language:SL'>Orient molecules as you wish<o:p></o:p></span></b></p><p class=Default><span lang=EN-US style='font-family:"Times New Roman",serif'><o:p> </o:p></span></p><p class=MsoNormal>Liquid crystals consisting of rod-shaped molecules are a remarkable soft matter with extraordinary responsivity to external stimuli. Techniques to control molecular orientations are essential in both making and operating liquid crystal devices that have changed our daily lives completely. Traditional display devices are based on uniform alignments of molecules at substrate surfaces. In this talk, we will present a new photopatterning method for aligning molecules into complex 2D and 3D orientations with sub-micrometer resolutions. This approach relies on so-called plasmonic metamasks to generate designer polarization patterns and photoalignments. We will present the basic principles behind this approach, and a number of intriguing applications enabled by it, including micro-optical devices for laser beam shaping, commanding chaotic motions of bacteria, and creating topological defects with designer structures.<o:p></o:p></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;mso-fareast-language:EN-US'><o:p> </o:p></span></p></div></body></html>