{"id":127069,"date":"2015-09-18T12:04:34","date_gmt":"2015-09-18T12:04:34","guid":{"rendered":"https:\/\/bm.dev.synology.me\/?p=127069"},"modified":"2015-09-18T12:04:34","modified_gmt":"2015-09-18T12:04:34","slug":"pelerina-invizibilitatii-la-un-pas-de-a-deveni-realitate-in-statele-unite","status":"publish","type":"post","link":"https:\/\/bm.dev.synology.me\/?p=127069","title":{"rendered":"Pelerina invizibilit\u0103\u0163ii, la un pas de a deveni realitate \u00een Statele Unite"},"content":{"rendered":"<p>\n<strong>Pelerina invizibilit\u0103\u0163ii reprezint\u0103 un concept relativ comun \u00een universul \u015ftiin\u0163ifico-fantastic, \u00eens\u0103 nu \u015fi \u00een lumea real\u0103. Totu\u015fi, cercet\u0103torii din Statele Unite au anun\u0163at recent c\u0103 un astfel de dispozitiv ar putea deveni realitate \u00een viitorul apropiat.<\/strong><\/p>\n<p>\nJoi, savan\u0163ii americani au dezv\u0103luit c\u0103 au testat cu succes o pelerin\u0103 a invizibilit\u0103\u0163ii foarte sub\u0163ire, realizat\u0103 din elemente paralelipipedice microscopice din aur, care, la fel ca pielea, se muleaz\u0103 foarte bine pe forma unor obiecte tridimensionale, pe care poate s\u0103 le fac\u0103 s\u0103 devin\u0103 nedetectabile \u00een spectrul luminos vizibil.<\/p>\n<p>\n<strong>Cercet\u0103torii spun c\u0103, de\u015fi experimentele lor au constat \u00een acoperirea unor obiecte minuscule, tehnologia ar putea fi utilizat\u0103 pentru a ascunde \u015fi obiecte mai mari, iar noua inven\u0163ie ar putea avea utiliz\u0103ri \u00een multe domenii de activitate, inclusiv \u00een cel militar.<\/strong><\/p>\n<p>\nPelerina, care are o grosime de 80 de nanometri, a fost plasat\u0103 peste un obiect tridimensional, care prezenta protuberan\u0163e \u015fi cavit\u0103\u0163i. Suprafa\u0163a pelerinei a redirec\u0163ionat undele luminoase reflectate de acel obiect, f\u0103c\u00e2ndu-l s\u0103 devin\u0103 astfel invizibil prin prisma detect\u0103rii optice.<\/p>\n<p>\nVa fi nevoie de 5-10 ani pentru ca noua tehnologie s\u0103 fie utilizat\u0103 \u00een scopuri practice, afirm\u0103 Xiang Zhang, directorul departamentului de \u015etiin\u0163a Materialelor din cadrul Laboratorului Na\u0163ional Lawrence Berkeley, coordonat de Departamentul pentru Energie din Statele Unite. Xiang Zhang este, de asemenea, profesor la prestigioasa Universitate California din Berkeley. Studiul a fost publicat \u00een revista Science.<\/p>\n<p>\nTehnologia implic\u0103 a\u015fa-zisele metamateriale, care posed\u0103 propriet\u0103\u0163i ce nu exist\u0103 \u00een natur\u0103. Suprafe\u0163ele lor con\u0163in elemente mult mai mici, ca m\u0103rime, fa\u0163\u0103 de lungimea de und\u0103 a luminii. Ele redirec\u0163ioneaz\u0103 undele luminoase, \u00eendep\u0103rt\u00e2ndu-le de obiectul ascuns sub acea pelerin\u0103.<\/p>\n<p>\nPelerina respectiv\u0103 ac\u0163ioneaz\u0103 ca o anten\u0103 de \u00eempr\u0103\u015ftiere a luminii microscopice care &#8220;sare&#8221; pe un obiect tridimensional, ca \u015fi cum ar fi reflectat\u0103 de o oglind\u0103 plan\u0103, f\u0103c\u00e2nd astfel ca obiectul s\u0103 devin\u0103 invizibil.<\/p>\n<p>\n&#8220;Faptul c\u0103 am putut s\u0103 facem o suprafa\u0163\u0103 curbat\u0103 s\u0103 par\u0103 plan\u0103 \u00eenseamn\u0103 \u015fi c\u0103 putem s\u0103 o facem s\u0103 par\u0103 \u00een orice alt fel. Putem face \u015fi o suprafa\u0163\u0103 plan\u0103 s\u0103 par\u0103 curbat\u0103&#8221;, a spus Xingjie Ni, profesor de inginerie electric\u0103 de la prestigioasa Penn State University din Statele Unite, coordonatorul studiului.<\/p>\n<p>\n<strong>Profesorul Ni spune c\u0103 noua tehnologie ar putea avea aplica\u0163ii militare, pentru a face ca o serie de obiecte mari, precum vehicule, avioane sau chiar solda\u0163i, s\u0103 devin\u0103 &#8220;invizibili&#8221;.<\/strong><\/p>\n<p>\nXingjie Ni a men\u0163ionat \u015fi o serie de aplica\u0163ii mai pu\u0163in conven\u0163ionale, \u00een industria cosmetic\u0103 \u015fi mod\u0103.<\/p>\n<p>\n&#8220;Cum ar fi o pelerin\u0103 a invizibilit\u0103\u0163ii pentru fa\u0163\u0103? Toate co\u015furile \u015fi ridurile nu ar mai fi vizibile&#8221;, a spus profesorul Ni. &#8220;Sau \u00een designul din mod\u0103? Pelerina ar putea fi realizat\u0103 pentru a ascunde abdomenul proeminent al cuiva&#8221;, a ad\u0103ugat profesorul de origine chinez\u0103.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>O pelerin\u0103 a invizibilit\u0103\u0163ii ar putea deveni realitate, \u00een cur\u00e2nd, afirm\u0103 cercet\u0103torii din Statele Unite, care au realizat un astfel de dispozitiv, folosind elemente microscopice din aur, ce este capabil s\u0103 reflecte lumina \u00een jurul unui obiect tridimensional, informeaz\u0103 Reuters.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[510],"tags":[41631,41588],"class_list":["post-127069","post","type-post","status-publish","format-standard","hentry","category-actualitate","tag-invizibilitate","tag-pelerina"],"_links":{"self":[{"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/posts\/127069","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=127069"}],"version-history":[{"count":0,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/posts\/127069\/revisions"}],"wp:attachment":[{"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=127069"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=127069"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=127069"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}