{"id":46,"date":"2017-01-30T19:54:56","date_gmt":"2017-01-30T18:54:56","guid":{"rendered":"https:\/\/blogs.uni-paderborn.de\/kbrassat\/?page_id=46"},"modified":"2017-06-22T15:05:33","modified_gmt":"2017-06-22T13:05:33","slug":"nanosphere-lithography","status":"publish","type":"page","link":"https:\/\/blogs.uni-paderborn.de\/kbrassat\/nanosphere-lithography\/","title":{"rendered":"Soft lithography"},"content":{"rendered":"<div class=\"twoclick_social_bookmarks_post_46 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_46')){$('.twoclick_social_bookmarks_post_46').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\\\/nanosphere-lithography\\\/\",\"post_id\":46,\"post_title_referrer_track\":\"Soft+lithography\",\"display_infobox\":\"on\"});}});\n\/* ]]> *\/<\/script><\/div><p>Soft lithography is a well established technique for efficient low-cost nano patterning of various surfaces on large areas using structured elastomers for pattern transfer.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter  wp-image-157\" src=\"https:\/\/blogs.uni-paderborn.de\/kbrassat\/files\/2017\/01\/Soft-litho-Brassat-300x166.png\" alt=\"\" width=\"421\" height=\"233\" srcset=\"https:\/\/blogs.uni-paderborn.de\/kbrassat\/files\/2017\/01\/Soft-litho-Brassat-300x166.png 300w, https:\/\/blogs.uni-paderborn.de\/kbrassat\/files\/2017\/01\/Soft-litho-Brassat-768x425.png 768w, https:\/\/blogs.uni-paderborn.de\/kbrassat\/files\/2017\/01\/Soft-litho-Brassat-1024x567.png 1024w, https:\/\/blogs.uni-paderborn.de\/kbrassat\/files\/2017\/01\/Soft-litho-Brassat-672x372.png 672w, https:\/\/blogs.uni-paderborn.de\/kbrassat\/files\/2017\/01\/Soft-litho-Brassat-1038x576.png 1038w, https:\/\/blogs.uni-paderborn.de\/kbrassat\/files\/2017\/01\/Soft-litho-Brassat.png 1094w\" sizes=\"auto, (max-width: 421px) 100vw, 421px\" \/><br \/>\nA commonly used elastomer is polydimethylsiloxane (PDMS) as is eases the applicability in many research areas due to its optical transparency, its non-toxicity and its straight-forward handling. In the \u201amicrocontact printing\u2018 approach patterned PDMS can be used for the stamping of nanoparticle- or molecular inks onto surface in patterns.<\/p>\n<p>We investigate the creation of large-area patterned PDMS stamps with nanoscale stamping features by combining the soft lithography with the nanosphere lithography.<\/p>\n<p>Hexagonally close-packed monolayers of polymer spheres can be deposited from aqueous suspensions onto solid surfaces by means of convective self-assembly, as described in Link to nanosphere lithography. We use these particle layers as topographic template in the PDMS patterning process. We pour the liquid PDMS onto this template and cure the siloxane thermally (Sketch in Fig.). Thus, after release of the stamp from the template, the PDMS is patterned with hexagonally arranged nanotips as the replica of the sphere layer, as shown in the SEM and AFM images in the Figure.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Soft lithography is a well established technique for efficient low-cost nano patterning of various surfaces on large areas using structured elastomers for pattern transfer. A commonly used elastomer is polydimethylsiloxane (PDMS) as is eases the applicability in many research areas due to its optical transparency, its non-toxicity and its straight-forward handling. In the \u201amicrocontact printing\u2018 [&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-46","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/blogs.uni-paderborn.de\/kbrassat\/wp-json\/wp\/v2\/pages\/46","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=46"}],"version-history":[{"count":6,"href":"https:\/\/blogs.uni-paderborn.de\/kbrassat\/wp-json\/wp\/v2\/pages\/46\/revisions"}],"predecessor-version":[{"id":159,"href":"https:\/\/blogs.uni-paderborn.de\/kbrassat\/wp-json\/wp\/v2\/pages\/46\/revisions\/159"}],"wp:attachment":[{"href":"https:\/\/blogs.uni-paderborn.de\/kbrassat\/wp-json\/wp\/v2\/media?parent=46"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}