{"id":59940,"date":"2018-07-02T12:33:56","date_gmt":"2018-07-02T10:33:56","guid":{"rendered":"http:\/\/ibecbarcelona.eu\/?p=59940"},"modified":"2020-06-15T12:51:06","modified_gmt":"2020-06-15T10:51:06","slug":"inspirant-se-en-la-caixa-deines-dun-fuster","status":"publish","type":"post","link":"https:\/\/ibecbarcelona.eu\/ca\/inspirant-se-en-la-caixa-deines-dun-fuster\/","title":{"rendered":"Inspirant-se en la caixa d’eines d’un fuster"},"content":{"rendered":"

No obstant aix\u00f2, una cosa que obstaculitza el desenvolupament d’aquests dispositius \u00e9s el fet que estan constantment subjectes a les fluctuacions brownianes; en altres paraules, s\u00f3n sacsejats per col\u00b7lisions amb les mol\u00e8cules en el fluid circumdant. Com a resultat, la seva direcci\u00f3 de propulsi\u00f3 canvia de forma aleat\u00f2ria cada pocs segons, la qual cosa impossibilita la migraci\u00f3 direccional.<\/p>\n

“No obstant aix\u00f2, durant l’autopropulsi\u00f3 els motors creen gradients qu\u00edmics i camps de flux en els fluids que els envolten”, diu el Jaideep Katuri, autor principal de l’estudi. “Aquests, al seu torn, es veuen afectats pel seu entorn. Pensem que podr\u00edem aprofitar aquestes interaccions per dissenyar una resposta direccional”.<\/p>\n

Els investigadors van plantejar que les caracter\u00edstiques topogr\u00e0fiques circumdants dels micromotors podrien fer-se servir per obtenir un flux direccional de part\u00edcules, per\u00f2 solament si aquestes caracter\u00edstiques es dissenyessin correctament. “Necessit\u00e0vem d’alguna manera aconseguir una topografia asim\u00e8trica de les superf\u00edcies en les quals neden els motors”, diu el Jaideep. “Aquesta asimetria assegura que les part\u00edcules trobin m\u00e9s f\u00e0cil moure’s en una direcci\u00f3 que en l’altra, i ens ajuda a aconseguir un flux de part\u00edcules robust que seria impossible en una superf\u00edcie homog\u00e8nia”.<\/p>\n

Per desenvolupar aquestes superf\u00edcies, el grup Nanobioengineering<\/a> del Josep Samitier va brindar la seva ajuda. Fent servir la seva experi\u00e8ncia en micropatrons, van dissenyar una topografia dentada per la superf\u00edcie dels nedadors, amb un angle que els fa comportar-se com un trinquet, permetent el moviment en una sola direcci\u00f3.<\/p>\n

“A m\u00e9s de generar traject\u00f2ries direccionals i fluxos de part\u00edcules orientats, hem vist que aquests ‘trinquets’ tamb\u00e9 podrien emprar-se per concentrar els micromotors en espais confinats”, afegeix el Jaideep.<\/p>\n

Aquesta capacitat de controlar el comportament dels sistemes normalment difusius obre noves possibilitats en microfluids, aplicacions de laboratori en un xip i, finalment, per a aplicacions de lliurament o recollida de f\u00e0rmacs.<\/p>\n

—
\nArticle referenciat:
\nJaideep Katuri, David Caballero, Raphael Voituriez, Josep Samitier, Samuel Sanchez (2018). Directed Flow of Micromotors through Alignment Interactions with Micropatterned Ratchets<\/a>. ACS Nano<\/em>, epub ahead of print<\/p>\n","protected":false},"excerpt":{"rendered":"

\"\"<\/strong>Els grups Smart-Nano-Bio-Devices i Nanobioengineering de l’IBEC s’han unit per resoldre el problema del moviment aleatori de micro i nanomotors.<\/h3>\n

El grup del Samuel S\u00e1nchez <\/a> ha seguit avan\u00e7ant en la creaci\u00f3 de micro i nanodispositius autopropulsats en els darrers anys. Aquests ‘nedadors’ autopropulsats per reaccions catal\u00edtiques en fluids, que podrien ser els fluids del nostre cos o simplement aigua, tenen un gran potencial en aplicacions com el subministrament dirigit de medicaments, la recuperaci\u00f3 mediambiental o com a elements de subministrament i recuperaci\u00f3 en dispositius lab-on-a-xip.<\/p>\n","protected":false},"author":4,"featured_media":59839,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[96],"tags":[1136,1140],"post_formats":[],"class_list":["post-59940","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-noticies-de-recerca","tag-josep-samitier-ca","tag-samuel-sanchez-ca"],"yoast_head":"\nInspirant-se en la caixa d'eines d'un fuster - 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\/inspirant-se-en-la-caixa-deines-dun-fuster\/\" \/>\n<meta property=\"og:locale\" content=\"ca_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Inspirant-se en la caixa d'eines d'un fuster - Institute for Bioengineering of Catalonia\" \/>\n<meta property=\"og:description\" content=\"Els grups Smart-Nano-Bio-Devices i Nanobioengineering de l'IBEC s'han unit per resoldre el problema del moviment aleatori de micro i nanomotors. El grup del Samuel S\u00e1nchez ha seguit avan\u00e7ant en la creaci\u00f3 de micro i nanodispositius autopropulsats en els darrers anys. Aquests 'nedadors' autopropulsats per reaccions catal\u00edtiques en fluids, que podrien ser els fluids del nostre cos o simplement aigua, tenen un gran potencial en aplicacions com el subministrament dirigit de medicaments, la recuperaci\u00f3 mediambiental o com a elements de subministrament i recuperaci\u00f3 en dispositius lab-on-a-xip.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/ibecbarcelona.eu\/ca\/inspirant-se-en-la-caixa-deines-dun-fuster\/\" \/>\n<meta property=\"og:site_name\" content=\"Institute for Bioengineering of Catalonia\" \/>\n<meta property=\"article:published_time\" content=\"2018-07-02T10:33:56+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2020-06-15T10:51:06+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2018\/07\/SS_Nanobio_ACSNANOratchet.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"400\" \/>\n\t<meta property=\"og:image:height\" content=\"378\" \/>\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=\"2 minuts\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/ca\\\/inspirant-se-en-la-caixa-deines-dun-fuster\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/ca\\\/inspirant-se-en-la-caixa-deines-dun-fuster\\\/\"},\"author\":{\"name\":\"\u00c0ngels L\u00f3pez\",\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/#\\\/schema\\\/person\\\/c212c6b589546130be67986b9290e2b8\"},\"headline\":\"Inspirant-se en la caixa d’eines d’un fuster\",\"datePublished\":\"2018-07-02T10:33:56+00:00\",\"dateModified\":\"2020-06-15T10:51:06+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/ca\\\/inspirant-se-en-la-caixa-deines-dun-fuster\\\/\"},\"wordCount\":360,\"publisher\":{\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/ca\\\/inspirant-se-en-la-caixa-deines-dun-fuster\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/ibecbarcelona.eu\\\/wp-content\\\/uploads\\\/2018\\\/07\\\/SS_Nanobio_ACSNANOratchet.jpg\",\"keywords\":[\"Josep Samitier\",\"Samuel Sanchez\"],\"articleSection\":[\"Not\u00edcies de recerca\"],\"inLanguage\":\"ca\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/ca\\\/inspirant-se-en-la-caixa-deines-dun-fuster\\\/\",\"url\":\"https:\\\/\\\/ibecbarcelona.eu\\\/ca\\\/inspirant-se-en-la-caixa-deines-dun-fuster\\\/\",\"name\":\"Inspirant-se en la caixa d'eines d'un fuster - 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