{"id":53384,"date":"2019-11-30T00:00:00","date_gmt":"2019-11-29T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/uchenye-iz-mfti-sdelali-shag-k-poyavleniyu-novoj-fleshki"},"modified":"2020-02-18T14:01:17","modified_gmt":"2020-02-18T11:01:17","slug":"uchenye-iz-mfti-sdelali-shag-k-poyavleniyu-novoj-fleshki","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/news\/uchenye-iz-mfti-sdelali-shag-k-poyavleniyu-novoj-fleshki","title":{"rendered":"Gli scienziati del MIPT hanno fatto un passo verso la creazione di una nuova \"chiavetta\"","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Lo sviluppo di dispositivi per lo stoccaggio di dati digitali non volatili \u00e8 in corso da decenni. Una vera svolta \u00e8 avvenuta poco meno di 20 anni fa con la memoria di tipo NAND, anche se la sua progettazione \u00e8 iniziata circa 20 anni prima. Oggi, dopo circa mezzo secolo dall'inizio di ricerche su larga scala, dalla produzione e dai continui sforzi per migliorare la NAND, questo tipo di memoria \u00e8 vicino a esaurire le sue possibilit\u00e0 di sviluppo. \u00c8 necessario porre le basi per passare a un altro tipo di celle di memoria con migliori caratteristiche energetiche, di velocit\u00e0 e di altro tipo. A lungo termine, questa memoria potrebbe essere quella basata su memorie segnetoelettriche di nuova generazione.<\/p>\n<p><img decoding=\"async\" alt=\"Gli scienziati del MIPT hanno fatto un passo verso la creazione di una nuova &quot;chiavetta&quot;\" src=\"\/wp-content\/uploads\/2019\/11\/decafd3e34f3cbc8fbea7600e3953312.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>Le segnetoelettriche (nella letteratura straniera si usa il termine ferroelettro) sono dielettrici che possiedono memoria rispetto al campo elettrico applicato o, in altre parole, si caratterizzano per una polarizzazione residua delle cariche. La memoria basata su segnetoelettrici non \u00e8 una novit\u00e0. La sfida \u00e8 stata ridurre le dimensioni delle celle segnetoelettriche a livello nanometrico.<\/p>\n<p>Tre anni fa, gli scienziati dell'MFITI <noindex><a rel=\"nofollow noopener noreferrer\" href=\"https:\/\/3dnews.ru\/931429\" target=\"_blank\">hanno presentato<\/a><\/noindex> hanno sviluppato una tecnologia di produzione di materiali a film sottile per la memoria segnetoelettrica basata su ossido di hafnio (HfO2). Anche questo non \u00e8 un materiale unico. Questo dielettrico \u00e8 stato utilizzato per diversi anni nella produzione di transistor con gate metallici in processori e logica digitale. Sulla base dei film policristallini compositi di ossidi di hafnio e zirconio spessi 2,5 nm proposti dall'MFITI, \u00e8 stato possibile creare giunzioni con propriet\u00e0 segnetoelettriche.<\/p>\n<p><center><\/center><\/p>\n<p>Per utilizzare i condensatori segnetoelettrici (come sono stati chiamati nell'MFITI) come celle di memoria, \u00e8 necessario raggiungere una polarizzazione massima, il che richiede uno studio approfondito dei processi fisici nello strato nanometrico. In particolare, \u00e8 necessario comprendere la distribuzione del potenziale elettrico all'interno dello strato durante l'applicazione della tensione. Fino a poco tempo fa, gli scienziati potevano basarsi solo sugli strumenti matematici per descrivere il fenomeno, e solo ora \u00e8 stata realizzata una metodologia che consente di osservare letteralmente l'interno del materiale durante il fenomeno.<\/p>\n<p><img decoding=\"async\" alt=\"Gli scienziati del MIPT hanno fatto un passo verso la creazione di una nuova &quot;chiavetta&quot;\" src=\"\/wp-content\/uploads\/2019\/11\/4ed4dcfea256213964ca7e9c4978563e.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>La metodologia proposta, che si basa sulla spettroscopia fotoelettronica a raggi X ad alta energia, poteva essere realizzata solo su installazioni speciali (acceleratori di sincrotrone). Una di queste si trova ad Amburgo (Germania). Tutti gli esperimenti con i \"condensatori segnetoelettrici\" prodotti all'MFITI sono stati condotti in Germania. L'articolo sul lavoro svolto \u00e8 stato pubblicato in <noindex><a rel=\"nofollow noopener noreferrer\" href=\"https:\/\/pubs.rsc.org\/en\/content\/articlelanding\/2019\/NR\/C9NR05904K#!divAbstract\" target=\"_blank\">Nanoscale<\/a><\/noindex>.<\/p>\n<p>I condensatori ferroelettrici sviluppati nel nostro laboratorio, se utilizzati per la produzione industriale di celle di memoria non volatile, sono in grado di garantire 10 miliardi di cicli di riscrittura, ovvero cento mila volte di pi\u00f9 rispetto a quanto consentito dalle attuali chiavette USB per computer, afferma Andrei Zenkevich, uno degli autori del lavoro e responsabile del laboratorio di materiali funzionali e dispositivi per la nanoelettronica del MIPT. Questo rappresenta un ulteriore passo verso una nuova forma di memoria, anche se ce ne sono ancora moltissimi da compiere.<\/p>\n<p><center><\/p>\n<p><\/center><\/p>\n<p>\t\t\t\t<center><br \/>\n\t\t\t\t\t\t\t\t<\/center><br \/>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/3dnews.ru\/998626\">3dnews.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0421\u043e\u0437\u0434\u0430\u043d\u0438\u0435 \u0438 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0430 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432 \u0434\u043b\u044f \u044d\u043d\u0435\u0440\u0433\u043e\u043d\u0435\u0437\u0430\u0432\u0438\u0441\u0438\u043c\u043e\u0433\u043e \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u0446\u0438\u0444\u0440\u043e\u0432\u044b\u0445 \u0434\u0430\u043d\u043d\u044b\u0445 \u0432\u0435\u0434\u0451\u0442\u0441\u044f \u043d\u0430 \u043f\u0440\u043e\u0442\u044f\u0436\u0435\u043d\u0438\u0438 \u043c\u043d\u043e\u0433\u0438\u0445 \u0434\u0435\u0441\u044f\u0442\u0438\u043b\u0435\u0442\u0438\u0439. \u041d\u0430\u0441\u0442\u043e\u044f\u0449\u0438\u0439 \u043f\u0440\u043e\u0440\u044b\u0432 \u0447\u0443\u0442\u044c \u043c\u0435\u043d\u044c\u0448\u0435 20 \u043b\u0435\u0442 \u043d\u0430\u0437\u0430\u0434 \u0441\u043e\u0432\u0435\u0440\u0448\u0438\u043b\u0430 \u043f\u0430\u043c\u044f\u0442\u044c \u0442\u0438\u043f\u0430 NAND, \u0445\u043e\u0442\u044f \u0435\u0451 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0430 \u0441\u0442\u0430\u0440\u0442\u043e\u0432\u0430\u043b\u0430 \u0435\u0449\u0451 \u043b\u0435\u0442 \u043d\u0430 20 \u0440\u0430\u043d\u044c\u0448\u0435. \u0421\u0435\u0433\u043e\u0434\u043d\u044f, \u0441\u043f\u0443\u0441\u0442\u044f \u043f\u0440\u0438\u043c\u0435\u0440\u043d\u043e \u043f\u043e\u043b\u0432\u0435\u043a\u0430 \u043f\u043e\u0441\u043b\u0435 \u043d\u0430\u0447\u0430\u043b\u0430 \u0448\u0438\u0440\u043e\u043a\u043e\u043c\u0430\u0441\u0448\u0442\u0430\u0431\u043d\u044b\u0445 \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u043d\u0438\u0439, \u043d\u0430\u0447\u0430\u043b\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0441\u0442\u0432\u0430 \u0438 \u043f\u043e\u0441\u0442\u043e\u044f\u043d\u043d\u044b\u0445 \u0443\u0441\u0438\u043b\u0438\u0439 \u043f\u043e \u0441\u043e\u0432\u0435\u0440\u0448\u0435\u043d\u0441\u0442\u0432\u043e\u0432\u0430\u043d\u0438\u044e NAND, \u044d\u0442\u043e\u0442 \u0442\u0438\u043f \u043f\u0430\u043c\u044f\u0442\u0438 \u0431\u043b\u0438\u0437\u043e\u043a \u043a [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-53384","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.0.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0421\u043e\u0437\u0434\u0430\u043d\u0438\u0435 \u0438 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0430 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432 \u0434\u043b\u044f \u044d\u043d\u0435\u0440\u0433\u043e\u043d\u0435\u0437\u0430\u0432\u0438\u0441\u0438\u043c\u043e\u0433\u043e \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u0446\u0438\u0444\u0440\u043e\u0432\u044b\u0445 \u0434\u0430\u043d\u043d\u044b\u0445 \u0432\u0435\u0434\u0451\u0442\u0441\u044f \u043d\u0430 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