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</o:shapelayout></xml><![endif]--></head><body lang=SL link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal style='margin-bottom:0cm;margin-bottom:.0001pt;line-height:normal'><span style='font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-language:SL'>Vabimo vas na 2. predavanje iz sklopa "Kolokviji na IJS" v letu 2018/19, ki bo <b><span style='color:red'>v četrtek, 22. novembra 2018, ob 10. uri </span></b><span style='color:red'>v Veliki predavalnici Instituta »Jožef Stefan«</span> na Jamovi cesti 39 v Ljubljani. Napovednik predavanja najdete tudi na naslovu </span><a href="http://www.ijs.si/ijsw/Koledar_prireditev"><span style='font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-language:SL'>http://www.ijs.si/ijsw/Koledar_prireditev</span></a><span style='font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-language:SL'>, posnetke preteklih predavanj<span style='color:blue'> </span>pa na </span><a href="http://videolectures.net/kolokviji_ijs"><span style='font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-language:SL'>http://videolectures.net/kolokviji_ijs</span></a><span style='font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-language:SL'>. <o:p></o:p></span></p><p class=MsoNormal style='margin-bottom:12.0pt;line-height:normal'><span style='font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-language:SL'>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<o:p></o:p></span></p><p class=MsoNormal style='margin-bottom:0cm;margin-bottom:.0001pt;line-height:normal'><b><span lang=EN-US style='font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-language:SL'>prof. dr. Rafal E. Dunin-Borkowski<o:p></o:p></span></b></p><p class=MsoNormal style='margin-bottom:0cm;margin-bottom:.0001pt;line-height:normal'><i><span lang=EN-US style='font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-language:SL'>Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons, Forschungszentrum Jülich, Nemčija<o:p></o:p></span></i></p><p class=MsoNormal style='margin-bottom:0cm;margin-bottom:.0001pt;line-height:normal'><i><span lang=EN-US style='font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-language:SL'><o:p> </o:p></span></i></p><p class=MsoNormal align=center style='margin-bottom:0cm;margin-bottom:.0001pt;text-align:center;line-height:normal'><b><span style='font-size:14.0pt;font-family:"Times New Roman",serif;mso-fareast-language:SL'>Merjenje elektromagnetnega polja z nanometrsko ločljivostjo s presevnim elektronskim mikroskopom<o:p></o:p></span></b></p><p class=MsoNormal align=center style='margin-bottom:0cm;margin-bottom:.0001pt;text-align:center;line-height:normal'><span style='font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-language:SL'><o:p> </o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt;text-align:justify;line-height:normal'><span style='font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-language:SL'>V preteklih letih smo doživeli preporod presevne elektronske mikroskopije, do katerega je prišlo tako zaradi vpeljave nove strojne opreme, kot so izvori elektronov na poljsko emisijo, korektorji aberacij ter nosilci za in-situ eksperimente, kot tudi zaradi razvoja novih tehnik, algoritmov in programske opreme, ki izkoriščajo večjo hitrost računalnikov ter zmožnost nadzora in avtomatizacije sodobnih elektronskih mikroskopov. Ta razvoj je omogočil neposredno snemanje strukture materialov s prostorsko ločljivostjo, manjšo od 50 pm. V predavanju bom opisal, kako lahko s presevno elektronsko mikroskopijo pridobimo poleg kvantitativne informacije o lokalni mikrostrukturi in kemiji sestavi materialov tudi podatke o magnetnem polju in porazdelitvi gostote naboja z domala atomsko ločljivostjo. Če te podatke združimo z iterativno rekonstruiranimi modeli, elektronsko tomografijo in z in-situ rezultati, lahko dobimo kvantitativno informacijo o magnetnih lastnosti materiala in sicer v treh razsežnostih, to je v odvisnosti od temperature, zunanjega polja ter reaktivnih plinov. V predavanju bodo predstavljeni rezultati, ki se nanašajo na preiskave posameznih magnetnih nanokristalov in skirmionov v razširjenih plasteh in v geometrijsko omejenih strukturah. Predavanje bom sklenil z osebnim pogledom na smeri razvoja presevne elektronske mikroskopije, ki utegnejo zahtevati korenite spremembe zasnove mikroskopov, dolgotrajnejše eksperimente, kvantitativno primerjavo rezultatov meritev s komplementarnimi tehnikami in naprednimi simulacijami ter nove pristope pri obdelavi in shranjevanju podatkov.<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt;text-align:justify;line-height:normal'><span style='font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-language:SL'>Predavanje bo v angleščini.<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt;line-height:normal'><b><span style='font-size:12.0pt;font-family:"Times New Roman",serif;color:red;mso-fareast-language:SL'>Lepo vabljeni!<o:p></o:p></span></b></p><p class=MsoNormal align=center style='text-align:center'><span style='color:black'>*****<o:p></o:p></span></p><p class=MsoNormal style='margin-bottom:0cm;margin-bottom:.0001pt;line-height:normal'><span style='font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-language:SL'><o:p> </o:p></span></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 style='margin-bottom:0cm;margin-bottom:.0001pt;line-height:normal'><span style='font-size:12.0pt;font-family:"Times New Roman",serif;color:black;mso-fareast-language:SL'>We invite you to the 2nd Institute colloquium in the academic year 2018/19. The colloquium will be held </span><b><span style='font-size:12.0pt;font-family:"Times New Roman",serif;color:red;mso-fareast-language:SL'>on Thursday November 22, 2018 at 10 AM</span></b><span style='font-size:12.0pt;font-family:"Times New Roman",serif;color:red;mso-fareast-language:SL'> in <b>the main Institute lecture hall</b></span><span style='font-size:12.0pt;font-family:"Times New Roman",serif;color:black;mso-fareast-language:SL'>, Jamova 39, Ljubljana. To read the abstract click </span><a href="http://www.ijs.si/ijsw/Koledar_prireditev"><span style='font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-language:SL'>http://www.ijs.si/ijsw/Koledar_prireditev</span></a><span style='font-size:12.0pt;font-family:"Times New Roman",serif;color:#1F497D;mso-fareast-language:SL'>. </span><span style='font-size:12.0pt;font-family:"Times New Roman",serif;color:black;mso-fareast-language:SL'>Past colloquia are posted on</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif;color:#1F497D;mso-fareast-language:SL'> </span><a href="http://videolectures.net/kolokviji_ijs"><span style='font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-language:SL'>http://videolectures.net/kolokviji_ijs</span></a><span style='font-size:12.0pt;font-family:"Times New Roman",serif;color:#1F497D;mso-fareast-language:SL'>.<o:p></o:p></span></p><p class=MsoNormal style='margin-bottom:0cm;margin-bottom:.0001pt;line-height:normal'><span style='font-size:12.0pt;font-family:"Times New Roman",serif;color:#1F497D;mso-fareast-language:SL'><o:p> </o:p></span></p><p class=MsoNormal style='margin-bottom:12.0pt;line-height:normal'><span style='font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-language:SL'>********************************************<b><o:p></o:p></b></span></p><p class=MsoNormal style='margin-bottom:0cm;margin-bottom:.0001pt;line-height:normal'><b><span lang=EN-US style='font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-language:SL'>prof. dr. Rafal E. Dunin-Borkowski<o:p></o:p></span></b></p><p class=MsoNormal style='margin-bottom:0cm;margin-bottom:.0001pt;line-height:normal'><i><span lang=EN-US style='font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-language:SL'>Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons, Forschungszentrum Jülich, Germany<o:p></o:p></span></i></p><p class=MsoNormal style='margin-bottom:0cm;margin-bottom:.0001pt;line-height:normal'><i><span lang=EN-US style='font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-language:SL'><o:p> </o:p></span></i></p><p class=MsoNormal align=center style='margin-bottom:0cm;margin-bottom:.0001pt;text-align:center;line-height:normal;text-autospace:none'><b><span style='font-size:14.0pt;font-family:"Times New Roman",serif;color:#202020;mso-fareast-language:SL'>Electromagnetic field mapping at the nanoscale in the transmission electron microscope<o:p></o:p></span></b></p><p class=MsoNormal style='margin-bottom:0cm;margin-bottom:.0001pt;line-height:normal;text-autospace:none'><span lang=EN-US style='font-size:12.0pt;font-family:"Times New Roman",serif;color:black;mso-fareast-language:ZH-CN'><o:p> </o:p></span></p><p class=MsoNormal style='margin-bottom:0cm;margin-bottom:.0001pt;text-align:justify;line-height:normal'><span style='font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-language:SL'>Transmission electron microscopy has been revolutionized in recent years, both by the introduction of new hardware such as field-emission electron guns, aberration correctors and in situ stages and by the development of new techniques, algorithms and software that take advantage of increased computational speed and the ability to control and automate modern electron microscopes. These developments have resulted in the ability to provide direct images of the internal structures of materials with a spatial resolution of better than 50 pm. In this talk, I will describe how electron microscopy can be used to obtain quantitative information about not only local microstructure and chemistry in materials but also magnetic fields and charge density distributions with close-to-atomic spatial resolution. When combined with model-based iterative reconstruction, electron tomography and in situ techniques, this information can be obtained quantitatively, in three dimensions, as a function of temperature and in the presence of applied fields and reactive gases. I will present results obtained from materials that include individual magnetic nanocrystals and skyrmions in extended films and geometrically confined structures. I will conclude with a personal perspective on directions for the future development of transmission electron microscopy, which may require radical changes to the design of electron microscopes, longer experiments, quantitative comparisons of experimental measurements with both complementary techniques and advanced simulations, and new approaches for data handling and storage.<o:p></o:p></span></p><p class=MsoNormal style='margin-bottom:0cm;margin-bottom:.0001pt;text-align:justify;line-height:normal'><span style='font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-language:SL'><o:p> </o:p></span></p><p class=MsoNormal style='margin-bottom:0cm;margin-bottom:.0001pt;line-height:normal'><span style='font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-language:SL'>Cordially invited!<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>