{"id":882,"date":"2020-02-10T12:46:31","date_gmt":"2020-02-10T11:46:31","guid":{"rendered":"https:\/\/blogs.uni-paderborn.de\/kbrassat\/?page_id=882"},"modified":"2020-02-10T12:46:31","modified_gmt":"2020-02-10T11:46:31","slug":"stem-investigations-of-ps-pmma-interfaces","status":"publish","type":"page","link":"https:\/\/blogs.uni-paderborn.de\/kbrassat\/stem-investigations-of-ps-pmma-interfaces\/","title":{"rendered":"(S)TEM investigations of PS-PMMA interfaces"},"content":{"rendered":"<div class=\"twoclick_social_bookmarks_post_882 social_share_privacy clearfix 1.6.4 locale-de_DE sprite-de_DE\"><\/div><div class=\"twoclick-js\"><script type=\"text\/javascript\">\/* <![CDATA[ *\/\njQuery(document).ready(function($){if($('.twoclick_social_bookmarks_post_882')){$('.twoclick_social_bookmarks_post_882').socialSharePrivacy({\"txt_help\":\"Wenn Sie diese Felder durch einen Klick aktivieren, werden Informationen an Facebook, Twitter, Flattr, Xing, t3n, LinkedIn, Pinterest oder Google eventuell ins Ausland \\u00fcbertragen und unter Umst\\u00e4nden auch dort gespeichert. N\\u00e4heres erfahren Sie durch einen Klick auf das <em>i<\\\/em>.\",\"settings_perma\":\"Dauerhaft aktivieren und Daten\\u00fcber-tragung zustimmen:\",\"info_link\":\"http:\\\/\\\/www.heise.de\\\/ct\\\/artikel\\\/2-Klicks-fuer-mehr-Datenschutz-1333879.html\",\"uri\":\"https:\\\/\\\/blogs.uni-paderborn.de\\\/kbrassat\\\/stem-investigations-of-ps-pmma-interfaces\\\/\",\"post_id\":882,\"post_title_referrer_track\":\"%28S%29TEM+investigations+of+PS-PMMA+interfaces\",\"display_infobox\":\"on\"});}});\n\/* ]]> *\/<\/script><\/div>\n<p>The investigation of the morphology of block copolymer domains is of great importance as it directly determines the precision of replicated nanostructures. Commonly used analytical techniques (neutron scattering, scanning force microscopy) either lack spatial information or nanoscale resolution. Using advanced analytical (scanning) transmission electron microscopy ((S)TEM), we provide real space information on polymer domain morphology and interfaces between polystyrene (PS) and polymethylmethacrylate (PMMA) in cylinder- and lamellae-forming BCPs at highest resolution. This allows us to correlate the internal structure of polymer domains with line edge roughnesses, interface widths and domain sizes. STEM is employed for high-resolution imaging, electron energy loss spectroscopy and energy filtered TEM (EFTEM) spectroscopic imaging for material identification and EFTEM thickness mapping for visualisation of material densities at defects. The volume fraction of non-phase separated polymer species can be analysed by EFTEM. These methods give new insights into the morphology of polymer domains the exact knowledge of which will allow to improve pattern quality for nanolithography.<\/p>\n\n\n\n<figure class=\"wp-block-image is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/blogs.uni-paderborn.de\/kbrassat\/files\/2020\/02\/Brassat-BCP-in-STEM.png\" alt=\"\" class=\"wp-image-872\" width=\"299\" height=\"247\" \/><\/figure>\n\n\n\n<p>Find all detailed information in <a href=\"https:\/\/www.mdpi.com\/2079-4991\/10\/1\/141\">this paper<\/a>!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The investigation of the morphology of block copolymer domains is of great importance as it directly determines the precision of replicated nanostructures. Commonly used analytical techniques (neutron scattering, scanning force microscopy) either lack spatial information or nanoscale resolution. Using advanced analytical (scanning) transmission electron microscopy ((S)TEM), we provide real space information on polymer domain morphology [&hellip;]<\/p>\n","protected":false},"author":7828,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-882","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/blogs.uni-paderborn.de\/kbrassat\/wp-json\/wp\/v2\/pages\/882","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.uni-paderborn.de\/kbrassat\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/blogs.uni-paderborn.de\/kbrassat\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.uni-paderborn.de\/kbrassat\/wp-json\/wp\/v2\/users\/7828"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.uni-paderborn.de\/kbrassat\/wp-json\/wp\/v2\/comments?post=882"}],"version-history":[{"count":1,"href":"https:\/\/blogs.uni-paderborn.de\/kbrassat\/wp-json\/wp\/v2\/pages\/882\/revisions"}],"predecessor-version":[{"id":884,"href":"https:\/\/blogs.uni-paderborn.de\/kbrassat\/wp-json\/wp\/v2\/pages\/882\/revisions\/884"}],"wp:attachment":[{"href":"https:\/\/blogs.uni-paderborn.de\/kbrassat\/wp-json\/wp\/v2\/media?parent=882"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}