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<p class=MsoNormal>Vabim vas na 8. predavanje iz sklopa "Kolokviji na
IJS" v letu 2009/10, ki bo <strong><span style='font-family:"Calibri","sans-serif";
color:red'>v sredo, 10. marca 2010, 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 style='margin-bottom:12.0pt'>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<b><o:p></o:p></b></p>
<p class=MsoNormal><b>Prof. dr. Andrew Bleloch<o:p></o:p></b></p>
<p class=MsoNormal><i>University of Liverpool and SuperSTEM Laboratory <o:p></o:p></i></p>
<p class=MsoNormal><i><br>
</i><b><span style='font-size:14.0pt'>Razumevanje materialov na atomarnem nivoju:
Novo obdobje presevne elektronske mikroskopije z uporabo korektorjev sferične
aberacije leč (Cs)<o:p></o:p></span></b></p>
<p class=MsoNormal><b><span style='font-size:14.0pt'><o:p> </o:p></span></b></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt;
text-align:justify'>Mikroskop je eno izmed najstarejših orodij znanstvenikov za
povečanje dosega naših čutil. Ker je svet okoli nas sestavljen iz atomov, nam
mikroskopi, ki lahko pokažejo, kateri atomi so na nekem mestu, podajajo celovit
vpogled v ta svet. Zaradi slabe kvalitete elektromagnetnih leč pa presevni
elektronski mikroskopi do sredine devetdesetih let niso mogli doseči ustrezne
ločljivosti. S korekcijo sferične aberacije leč Cs (danes tudi s korekcijo
kromatične aberacije Cc) pa se je v zadnjih 15 letih ločljivost elektronskih
mikroskopov povečala za bistveni dvakratni faktor, kar že omogoča rutinsko
strukturno in kemijsko karakterizacijo materialov na atomskem nivoju. SuperSTEM
Laboratory je bila prva nacionalna institucija v Veliki Britaniji, ki je lahko
ponudila znanstveni srenji preiskave materialov z elektronskimi mikroskopi z
uporabo Cs-korektorjev. V predavanju bodo predstavljeni izbrani primeri uporabe
elektronske Cs-mikroskopije (posnetki, spektroskopije) pri preučevanju in
reševanju problemov v materialih od toksičnosti nanodelcev na osnovi ogljika
prek nanodelcev za katalizo do strukturne in kemijske karakterizacije napak v
keramičnih perovskitih in mej v polprevodnikih.<span style='font-size:12.0pt'><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt;
text-align:justify'>Predavanje bo v angleškem jeziku.<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><strong><span
style='font-family:"Calibri","sans-serif";color:red'>Lepo vabljeni!</span></strong><strong><span
style='font-family:"Calibri","sans-serif";font-weight:normal'><o:p></o:p></span></strong></p>
<p class=MsoNormal align=center style='text-align:center'><b><span
style='font-size:26.0pt'>***<o:p></o:p></span></b></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal style='text-align:justify'><span lang=EN-US>We would like to
invite you to 8<sup>th</sup> lecture of the "Kolokvij na IJS" in the
school year 2009/10. The lecture will be held <b>on Wednesday, March 10, 2010
at 1 pm</b> at <b>JSI main lecture hall</b>, Jamova 39, Ljubljana. The abstract
of the lecture can be found on website: </span><span lang=EN-US
style='font-size:10.0pt'><a href="http://www.ijs.si/ijsw/Koledar_prireditev"><span
style='font-size:11.0pt'>http://www.ijs.si/ijsw/Koledar_prireditev</span></a></span><span
lang=EN-US>, the previous recorded lectures can be found on website: </span><span
lang=EN-US style='font-size:10.0pt'><a
href="http://videolectures.net/kolokviji_ijs"><span style='font-size:11.0pt'>http://videolectures.net/kolokviji_ijs</span></a></span><span
lang=EN-US>.</span><span lang=EN-US style='font-size:10.0pt'> </span><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><span
lang=EN-US>********************************************<o:p></o:p></span></p>
<p class=MsoNormal><b>Prof. dr. Andrew Bleloch<o:p></o:p></b></p>
<p class=MsoNormal><i>University of Liverpool and SuperSTEM Laboratory <o:p></o:p></i></p>
<p class=MsoNormal><i><o:p> </o:p></i></p>
<p class=MsoNormal><b><span style='font-size:16.0pt'>Understanding materials
atom by atom: a new era of aberration corrected electron microscopy</span></b><b><span
lang=EN-US style='font-size:16.0pt'><o:p></o:p></span></b></p>
<p class=MsoNormal style='text-align:justify'><span lang=EN-US
style='font-size:12.0pt'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-align:justify'><span lang=EN-US>The microscope
is one of the oldest tools used by scientists to extend the reach of their
senses. Since the world around us, both natural and synthetic, is made up
of atoms, a microscope capable of showing us which atoms are where, arguably,
gives a complete characterisation of that world. The electron microscope
was, until the middle of the 1990’s, hampered by the poor quality of
charged particle lenses. 15 years of spherical (and latterly chromatic)
aberration correction has since given a crucial factor-of-two improvement in
resolution so that routine atom by atom characterisation of materials is now
possible. The SuperSTEM Laboratory in the UK was the first national
facility to offer aberration corrected analysis of materials to the UK
materials community. Case studies of the application of aberration technology,
using both imaging and spectrometry, to a wide variety of materials problems
ranging from the toxicity of nano-scale carbon materials through catalyst
nano-particles to defects in perovskites and semiconductor interfaces will be
presented.<o:p></o:p></span></p>
<p class=MsoNormal><b><span lang=EN-US style='font-size:14.0pt'><o:p> </o:p></span></b></p>
<p class=MsoNormal><b><span lang=EN-US style='font-size:14.0pt'>We look forward
to meeting you at the “Kolokvij na IJS”!<o:p></o:p></span></b></p>
<p class=MsoNormal><span lang=EN-US style='font-size:12.0pt'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
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