<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns:p="urn:schemas-microsoft-com:office:powerpoint" xmlns:a="urn:schemas-microsoft-com:office:access" xmlns:dt="uuid:C2F41010-65B3-11d1-A29F-00AA00C14882" xmlns:s="uuid:BDC6E3F0-6DA3-11d1-A2A3-00AA00C14882" xmlns:rs="urn:schemas-microsoft-com:rowset" xmlns:z="#RowsetSchema" xmlns:b="urn:schemas-microsoft-com:office:publisher" xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet" xmlns:c="urn:schemas-microsoft-com:office:component:spreadsheet" xmlns:odc="urn:schemas-microsoft-com:office:odc" xmlns:oa="urn:schemas-microsoft-com:office:activation" xmlns:html="http://www.w3.org/TR/REC-html40" xmlns:q="http://schemas.xmlsoap.org/soap/envelope/" xmlns:rtc="http://microsoft.com/officenet/conferencing" xmlns:D="DAV:" xmlns:Repl="http://schemas.microsoft.com/repl/" xmlns:mt="http://schemas.microsoft.com/sharepoint/soap/meetings/" xmlns:x2="http://schemas.microsoft.com/office/excel/2003/xml" xmlns:ppda="http://www.passport.com/NameSpace.xsd" xmlns:ois="http://schemas.microsoft.com/sharepoint/soap/ois/" xmlns:dir="http://schemas.microsoft.com/sharepoint/soap/directory/" xmlns:ds="http://www.w3.org/2000/09/xmldsig#" xmlns:dsp="http://schemas.microsoft.com/sharepoint/dsp" xmlns:udc="http://schemas.microsoft.com/data/udc" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:sub="http://schemas.microsoft.com/sharepoint/soap/2002/1/alerts/" xmlns:ec="http://www.w3.org/2001/04/xmlenc#" xmlns:sp="http://schemas.microsoft.com/sharepoint/" xmlns:sps="http://schemas.microsoft.com/sharepoint/soap/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:udcs="http://schemas.microsoft.com/data/udc/soap" xmlns:udcxf="http://schemas.microsoft.com/data/udc/xmlfile" xmlns:udcp2p="http://schemas.microsoft.com/data/udc/parttopart" xmlns:wf="http://schemas.microsoft.com/sharepoint/soap/workflow/" xmlns:dsss="http://schemas.microsoft.com/office/2006/digsig-setup" xmlns:dssi="http://schemas.microsoft.com/office/2006/digsig" xmlns:mdssi="http://schemas.openxmlformats.org/package/2006/digital-signature" xmlns:mver="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns:mrels="http://schemas.openxmlformats.org/package/2006/relationships" xmlns:spwp="http://microsoft.com/sharepoint/webpartpages" xmlns:ex12t="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:ex12m="http://schemas.microsoft.com/exchange/services/2006/messages" xmlns:pptsl="http://schemas.microsoft.com/sharepoint/soap/SlideLibrary/" xmlns:spsl="http://microsoft.com/webservices/SharePointPortalServer/PublishedLinksService" xmlns:Z="urn:schemas-microsoft-com:" xmlns:st="" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 12 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Consolas;
panose-1:2 11 6 9 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p.MsoPlainText, li.MsoPlainText, div.MsoPlainText
{mso-style-priority:99;
mso-style-link:"Plain Text Char";
margin:0in;
margin-bottom:.0001pt;
font-size:10.5pt;
font-family:Consolas;}
p.MsoNoSpacing, li.MsoNoSpacing, div.MsoNoSpacing
{mso-style-priority:1;
margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";}
span.PlainTextChar
{mso-style-name:"Plain Text Char";
mso-style-priority:99;
mso-style-link:"Plain Text";
font-family:Consolas;}
span.EmailStyle20
{mso-style-type:personal;
font-family:"Calibri","sans-serif";
color:windowtext;}
span.EmailStyle21
{mso-style-type:personal;
font-family:"Calibri","sans-serif";
color:#1F497D;}
span.EmailStyle22
{mso-style-type:personal;
font-family:"Calibri","sans-serif";
color:#1F497D;}
span.EmailStyle23
{mso-style-type:personal;
font-family:"Calibri","sans-serif";
color:#1F497D;}
span.EmailStyle24
{mso-style-type:personal;
font-family:"Calibri","sans-serif";
color:#1F497D;}
span.EmailStyle25
{mso-style-type:personal;
font-family:"Calibri","sans-serif";
color:#1F497D;}
span.EmailStyle26
{mso-style-type:personal;
font-family:"Calibri","sans-serif";
color:#1F497D;}
span.EmailStyle27
{mso-style-type:personal;
font-family:"Calibri","sans-serif";
color:#1F497D;}
span.EmailStyle28
{mso-style-type:personal;
font-family:"Calibri","sans-serif";
color:#1F497D;}
span.EmailStyle29
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}
span.lastname
{mso-style-name:lastname;}
span.firstname
{mso-style-name:firstname;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='color:black'>Dear All,<o:p></o:p></span></p><p class=MsoNormal><span style='color:black'><o:p> </o:p></span></p><p class=MsoNoSpacing style='line-height:115%'><span style='color:black'>O</span><span style='color:black'>ur next LI-LA-SiGMA seminar will be </span><span style='color:black'>on Wednesday, June 1st at 2.30pm. The seminar will be broadcasted from SC 2049 at UNO.</span><span style='color:black'> Our speaker is Dr. </span>Valeri Petkov, Dept. Physics, CMU<span style='color:black'>.</span><span style='color:#1F497D'> </span><span style='color:black'>Also, we need decide who will take over the management of the seminar since my tenure has ended.<o:p></o:p></span></p><p class=MsoPlainText><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoPlainText style='text-align:justify'><b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'>Title: </span></b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>Nanostructure by high-energy XRD and atomic pair distribution functions</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>.<span style='color:black'><o:p></o:p></span></span></p><p class=MsoPlainText><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><u>Abstract:</u> Knowledge of the atomic-scale structure is an important prerequisite to understanding, predicting and improving properties of materials. With bulk materials it is easily obtained by traditional (Bragg) x-ray diffraction. However, when the physical size of materials is reduced to nanoscale dimensions Bragg x-ray diffraction is difficult to apply. The reason is that the diffraction patterns of nanosized materials show a limited number of Bragg peaks, if any, and a very pronounced diffuse component. The problem may be solved by employing a non-traditional approach involving high-energy x-ray diffraction and atomic pair distribution function data analysis [1]. In the talk, the essentials of this approach will be introduced and its great potential demonstrated with results from several recent studies on nanostructured metallic (Au and PtPd [2]), oxidic (BaTiO<sub>3</sub>, V<sub>2</sub>O<sub><span style='font-size:9.0pt'>5</span></sub>, TiO<sub><span style='font-size:9.0pt'>2</span></sub>, Fe<sub>2</sub>O<sub>3 </sub>[3]), semiconductor (CdTe, PbSe [4]) and organic (PAMAM dendrimers [5]) materials.<o:p></o:p></p><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Arial","sans-serif"'> </span><o:p></o:p></p><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Arial","sans-serif"'>[1]</span><b> </b><b><span lang=FR>V. Petkov</span></b><span lang=FR> </span><i>Materials Today</i><span lang=FR> 11 (2008) 28. </span><o:p></o:p></p><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Arial","sans-serif"'>[2]</span><b> <a name="OLE_LINK2">V. Petkov</a></b>, N. Bedford, M. R. Knecht<sup> </sup>, Mi. G. Weir<sup> </sup>, R. M. Crooks<sup> </sup>, W.Tang<sup> </sup>,G. Henkelman<sup> </sup>and A. Frenkel<b><sup> </sup></b> <i>J. Phys. Chem</i>. C 112 (2008) 8907; <span class=lastname><b>V. Petkov, </b>T. Ohta, Y. Hou<sup> </sup>and Y. Ren<b><i><sup> </sup></i></b></span><i>J. Phys. Chem</i>. C 111 (2007) 714.<o:p></o:p></p><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Arial","sans-serif"'>[3] </span><b>V. Petkov</b>, V. Buscaglia, M. Buscaglia, Z. Zhao<span style='color:red'> </span>and Y. Ren <i>Phys. Rev</i>. <i>B</i> 78 (2008) 054107; <b>V. Petkov</b>, P. Y. Zavalij, S. Lutta, M. S. Whittingham, V. Parvanov and S. Shastri <i>Phys. Rev. B 69.</i> (2004) 085410; S. K. Pradhan, Y. Mao, S. S. Wong, P. Chupas and <b>Valeri Petkov</b> <i>Chem. Mat</i>. 19 (2007) 6180; <b><span lang=IT>V. Petkov</span></b><span lang=IT>, P. D. Cozzoli, R. Buonsanti, R.Cingolani, and Y.Ren <i> </i></span><i>JACS Comm</i>. 131 (2009) 14264.<o:p></o:p></p><p class=MsoNormal>[4] S. K. Pradhan, Z. T. Deng,<span style='color:red'> </span>F. Tang, C. Wang, Y. Ren<sup> </sup>, P. Moeck and <b>V. Petkov </b><i>J. Appl. Phys.</i> 102 (2007) 044304; <b><span lang=FR>V. Petkov</span></b><span lang=FR>, </span>I. Moreels, Z. Hens and Y. Ren <i>Phys. Rev. Lett</i> (2010), submitted.<o:p></o:p></p><p class=MsoNormal>[5] <span class=firstname><b>V.</b></span><span class=lastname><b> Petkov</b>, V. Parvanov, D. Tomalia, D. Swanson, D. Bergstrom and <b> </b>T. Vogt<b>, </b></span><i>Solid State Comm</i><b>. </b>134 (2005) 671<o:p></o:p></p><p class=MsoNormal style='text-align:justify'><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoPlainText><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>The access grid locations are as follow: <o:p></o:p></span></p><p class=MsoPlainText><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'><o:p> </o:p></span></p><p class=MsoNoSpacing style='line-height:115%'><u>Tulane:</u> AG room: 403 Stanley Thomas Hall<o:p></o:p></p><p class=MsoNoSpacing style='line-height:115%'><u>University of Louisiana at Lafayette</u>: AG room: Abdalla Hall<o:p></o:p></p><p class=MsoNoSpacing style='line-height:115%'><u>Southern University:</u> AG room: 218 Moore Hall<o:p></o:p></p><p class=MsoNoSpacing style='line-height:115%'><u>UNO:</u> AG room: <span style='color:black'>SC 2002</span><o:p></o:p></p><p class=MsoNoSpacing style='line-height:115%'><u>LSU:</u> AG room: Johnston 338<o:p></o:p></p><p class=MsoNoSpacing style='line-height:115%'><u>LATECH:</u> AG room: 234 Netken Hall<o:p></o:p></p><p class=MsoPlainText style='text-align:justify'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'><o:p> </o:p></span></p><p class=MsoPlainText style='text-align:justify'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>Please, distribute this email to your students and colleagues.<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Kind Regards,<o:p></o:p></p><p class=MsoNormal>Dentcho<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>----<o:p></o:p></p><p class=MsoNormal>Dentcho A. Genov, PhD<o:p></o:p></p><p class=MsoNormal>The LONI Institute Fellow<o:p></o:p></p><p class=MsoNormal>Assistant Professor of Physics & Electrical Engineering<o:p></o:p></p><p class=MsoNormal>Louisiana Tech University, Engineering Annex, Room 220<o:p></o:p></p><p class=MsoNormal>599 W Arizona Ave, Ruston LA 71272<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Phone: (318) 257-4190, Fax: (318) 257-2777<o:p></o:p></p><p class=MsoNormal>Webpage: http://www.phys.latech.edu/~dgenov/<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>