{"id":28976,"date":"2017-04-24T15:33:51","date_gmt":"2017-04-24T13:33:51","guid":{"rendered":"http:\/\/ibecbarcelona.eu\/ca\/?p=28976"},"modified":"2017-04-27T13:58:59","modified_gmt":"2017-04-27T11:58:59","slug":"desenvolupen-el-diode-duna-sola-molecula-mes-eficient-mai-fabricat","status":"publish","type":"post","link":"https:\/\/ibecbarcelona.eu\/ca\/desenvolupen-el-diode-duna-sola-molecula-mes-eficient-mai-fabricat\/","title":{"rendered":"Desenvolupen el d\u00edode d&#8217;una sola mol\u00e8cula m\u00e9s eficient mai fabricat"},"content":{"rendered":"<p>&nbsp;<\/p>\n<h6 class=\"caption\">Imatge: D\u00edode d&#8217;una sola mol\u00e8cula format per una mol\u00e8cula entre un el\u00e8ctrode d&#8217;or i un de silici<\/h6>\n<p>&nbsp;<\/p>\n<p>El descobriment, que va apar\u00e8ixer en <em> Nature Communications <\/em> aquest mes, aborda un problema emergent: que els cient\u00edfics i enginyers s&#8217;acosten al l\u00edmit al que poden reduir f\u00edsicament els components electr\u00f2nics. &#8220;Per aconseguir el seg\u00fcent nivell de miniaturitzaci\u00f3, hem d&#8217;utilitzar mol\u00e8cules individuals com a components actius dels circuits&#8221;, diu Ismael D\u00edez-P\u00e9rez, professor associat de la Universitat de Barcelona (UB) i <a href=\"https:\/\/ibecbarcelona.eu\/nanoprobes\" target=\"_blank\" rel=\"noopener noreferrer\">investigador s\u00e8nior de l&#8217;IBEC<\/a>, qui va dirigir el projecte.<\/p>\n<p>El m\u00e8tode aparella una mol\u00e8cula org\u00e0nica entre dos nano-el\u00e8ctrodes, tots connectats junts en un circuit de tan sols 1 nan\u00f2metre de llarg. El d\u00edode d&#8217;una sola mol\u00e8cula resultant \u00e9s m\u00e9s petit i molt m\u00e9s eficient que mai abans. &#8220;Aquest enfocament ens permetr\u00e0 reunir milers de milers de milions de d\u00edodes en un diminut xip de silici&#8221;, explica l&#8217;Ismael.<\/p>\n<p>El d\u00edode molecular que s&#8217;ha presentat permet que el corrent flueixi 4.000 vegades m\u00e9s en un sentit que en el sentit contrari, un rendiment que \u00e9s comparable al dels d\u00edodes t\u00edpicament usats \u200b\u200bavui dia per\u00f2 a una escala molt menor. L&#8217;equip ara est\u00e0 treballant per aconseguir una proporci\u00f3 de rectificaci\u00f3 encara major i un augment de la vida \u00fatil d&#8217;aquests circuits d&#8217;una sola mol\u00e8cula per acostar-nos un pas m\u00e9s a l&#8217;obtenci\u00f3 de dispositius <em>single-molecule<\/em>.<\/p>\n<p>&#8212;<\/p>\n<p>Aragones, A. C. et al. <a href=\"https:\/\/www.nature.com\/articles\/ncomms15056\" target=\"_blank\" rel=\"noopener noreferrer\">Single-molecule electrical contacts on silicon electrodes under ambient conditions.<\/a> <em>Nat. Commun.<\/em> 8, 15056 doi: 10.1038\/ncomms15056 (2017).<\/p>\n","protected":false},"excerpt":{"rendered":"<h3><img decoding=\"async\" data-src=\"https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2017\/04\/Ismanatcomms_UB_IBEC.jpg\" alt=\"\" width=\"400\" height=\"258\" class=\"left size-full wp-image-28846 lazyload\" data-srcset=\"https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2017\/04\/Ismanatcomms_UB_IBEC.jpg 400w, https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2017\/04\/Ismanatcomms_UB_IBEC-300x194.jpg 300w, https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2017\/04\/Ismanatcomms_UB_IBEC-202x130.jpg 202w, https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2017\/04\/Ismanatcomms_UB_IBEC-150x97.jpg 150w\" data-sizes=\"(max-width: 400px) 100vw, 400px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 400px; --smush-placeholder-aspect-ratio: 400\/258;\" \/>Els investigadors han creat el d\u00edode d&#8217;una sola mol\u00e8cula m\u00e9s eficient de la hist\u00f2ria.<\/h3>\n<p>Els d\u00edodes s\u00f3n utilitzats de forma habitual en els dispositius electr\u00f2nics actuals, permetent que el corrent flueixi en una direcci\u00f3 mentre es bloqueja en l&#8217;oposada. Investigadors de la Universitat de Barcelona (UB) i de l&#8217;Institut de Bioingenier\u00eda de Catalunya (IBEC) han creat un d\u00edode de nom\u00e9s 1 nan\u00f2metre  amb una ra\u00f3 de rectificaci\u00f3 &#8211; la relaci\u00f3 del corrent que flueix en un sentit en comparaci\u00f3 amb l&#8217;altre &#8211; diversos ordres de magnitud superior a l&#8217;aconseguit pr\u00e8viament.<\/p>\n","protected":false},"author":4,"featured_media":28846,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[96],"tags":[],"post_formats":[],"class_list":["post-28976","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-noticies-de-recerca"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Desenvolupen el d\u00edode d&#039;una sola mol\u00e8cula m\u00e9s eficient mai fabricat - Institute for Bioengineering of Catalonia<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ibecbarcelona.eu\/ca\/desenvolupen-el-diode-duna-sola-molecula-mes-eficient-mai-fabricat\/\" \/>\n<meta property=\"og:locale\" content=\"ca_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Desenvolupen el d\u00edode d&#039;una sola mol\u00e8cula m\u00e9s eficient mai fabricat - Institute for Bioengineering of Catalonia\" \/>\n<meta property=\"og:description\" content=\"Els investigadors han creat el d\u00edode d&#039;una sola mol\u00e8cula m\u00e9s eficient de la hist\u00f2ria.  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Investigadors de la Universitat de Barcelona (UB) i de l&#039;Institut de Bioingenier\u00eda de Catalunya (IBEC) han creat un d\u00edode de nom\u00e9s 1 nan\u00f2metre amb una ra\u00f3 de rectificaci\u00f3 - la relaci\u00f3 del corrent que flueix en un sentit en comparaci\u00f3 amb l&#039;altre - diversos ordres de magnitud superior a l&#039;aconseguit pr\u00e8viament.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/ibecbarcelona.eu\/ca\/desenvolupen-el-diode-duna-sola-molecula-mes-eficient-mai-fabricat\/\" \/>\n<meta property=\"og:site_name\" content=\"Institute for Bioengineering of Catalonia\" \/>\n<meta property=\"article:published_time\" content=\"2017-04-24T13:33:51+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2017-04-27T11:58:59+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2017\/04\/Ismanatcomms_UB_IBEC.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"400\" \/>\n\t<meta property=\"og:image:height\" content=\"258\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"\u00c0ngels L\u00f3pez\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Escrit per\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u00c0ngels L\u00f3pez\" \/>\n\t<meta name=\"twitter:label2\" content=\"Temps estimat de lectura\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minut\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/ca\\\/desenvolupen-el-diode-duna-sola-molecula-mes-eficient-mai-fabricat\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/ca\\\/desenvolupen-el-diode-duna-sola-molecula-mes-eficient-mai-fabricat\\\/\"},\"author\":{\"name\":\"\u00c0ngels L\u00f3pez\",\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/#\\\/schema\\\/person\\\/c212c6b589546130be67986b9290e2b8\"},\"headline\":\"Desenvolupen el d\u00edode d&#8217;una sola mol\u00e8cula m\u00e9s eficient mai fabricat\",\"datePublished\":\"2017-04-24T13:33:51+00:00\",\"dateModified\":\"2017-04-27T11:58:59+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/ca\\\/desenvolupen-el-diode-duna-sola-molecula-mes-eficient-mai-fabricat\\\/\"},\"wordCount\":279,\"publisher\":{\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/ca\\\/desenvolupen-el-diode-duna-sola-molecula-mes-eficient-mai-fabricat\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/ibecbarcelona.eu\\\/wp-content\\\/uploads\\\/2017\\\/04\\\/Ismanatcomms_UB_IBEC.jpg\",\"articleSection\":[\"Not\u00edcies de recerca\"],\"inLanguage\":\"ca\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/ca\\\/desenvolupen-el-diode-duna-sola-molecula-mes-eficient-mai-fabricat\\\/\",\"url\":\"https:\\\/\\\/ibecbarcelona.eu\\\/ca\\\/desenvolupen-el-diode-duna-sola-molecula-mes-eficient-mai-fabricat\\\/\",\"name\":\"Desenvolupen el d\u00edode d'una sola mol\u00e8cula m\u00e9s eficient mai fabricat - 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