{"id":9434,"date":"2010-10-18T11:39:46","date_gmt":"2010-10-18T08:39:46","guid":{"rendered":"http:\/\/www.fyysika.ee\/uudised\/?p=9434"},"modified":"2010-10-18T12:03:24","modified_gmt":"2010-10-18T09:03:24","slug":"teadlased-valmistasid-grafeenipohise-voimendi","status":"publish","type":"post","link":"https:\/\/www.fyysika.ee\/?p=9434","title":{"rendered":"Teadlased valmistasid grafeenip\u00f5hise v\u00f5imendi"},"content":{"rendered":"<p><strong>Rice&#8217;i \u00dclikooli teadlaste l\u00e4bi viidud uurimust\u00f6\u00f6, mis kasutab \u00e4ra grafeeni laiaulatuslikke v\u00f5imeid, v\u00f5ib viia vooluringide rakendusteni, mis on hulga kompaktsemad ning paindlikumad kui praegu kasutatavad r\u00e4nip\u00f5hised tehnoloogiad lubavad.<\/strong><\/p>\n<p><a href=\"http:\/\/www.fyysika.ee\/uudised\/wp-content\/uploads\/2010\/10\/1012_Amplifier.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-medium wp-image-9435\" title=\"1012_Amplifier\" src=\"http:\/\/www.fyysika.ee\/uudised\/wp-content\/uploads\/2010\/10\/1012_Amplifier-300x256.jpg\" alt=\"\" width=\"300\" height=\"256\" srcset=\"https:\/\/www.fyysika.ee\/wp-content\/uploads\/2010\/10\/1012_Amplifier-300x256.jpg 300w, https:\/\/www.fyysika.ee\/wp-content\/uploads\/2010\/10\/1012_Amplifier-1024x874.jpg 1024w, https:\/\/www.fyysika.ee\/wp-content\/uploads\/2010\/10\/1012_Amplifier-250x213.jpg 250w, https:\/\/www.fyysika.ee\/wp-content\/uploads\/2010\/10\/1012_Amplifier.jpg 1250w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>Kolme terminaliga, \u00fchetransistorilised grafeenip\u00f5hised v\u00f5imendid v\u00f5ivad saada v\u00f5tmeelementideks tuleviku elektroonikaseadmete vooluringides. Seesugust v\u00f5imendit saab t\u00f6\u00f6 k\u00e4igus positiivsete, negatiivsete v\u00f5i m\u00f5lemam\u00e4rgiliste laengukandjate abil seada t\u00f6\u00f6tama \u00fcksk\u00f5ik millisel kolmest terminalist, olles tavap\u00e4raste \u00fchetransistoriliste struktuuridega v\u00f5imendite seas esimene, mis seesugust asja v\u00f5imaldab, kirjutab <a href=\"http:\/\/www.physorg.com\/news\/2010-10-triple-mode-transistors-potential-graphene-based-amplifiers.html\">physorg.com<\/a>.<\/p>\n<p>Uurimuse viisid l\u00e4bi\u00a0<strong>Kartik Mohanram<\/strong>, Rice&#8217;i \u00fclikooli elektri- ning arvutiteaduse professor,\u00a0<strong>Alexander Balandin <\/strong>California \u00dclikooli elektriinseneeria professor<strong> <\/strong>ja nende \u00f5pilased\u00a0<strong>Xuebei Yangi<\/strong> ning <strong>Guanxiong Liu<\/strong>&#8216;ga.<\/p>\n<p>Grafeentransistor saab olla kas n-(negatiivset) v\u00f5i p-t\u00fc\u00fcpi(positiivset), s\u00f5ltudes sellest, kas laengukandja p\u00e4rineb suudme v\u00f5i l\u00e4tteterminalist. Kolmas funktsioon avaldub siis, kui m\u00f5lema laengukandja m\u00f5ju on v\u00f5rdne: transistorist saab sageduskordaja. Kolme reziimi kombineerimise abil demonstreerisid teadlased seesuguseid tavap\u00e4raseid signaaliskeeme nagu faasi- ja sagedusmuutjad, r\u00f5hudes rakendustele juhtmeta ning audiorakendustes.<\/p>\n<p>,,Meie ning kaasteadlaste t\u00f6\u00f6, mis keskendub ambipolaarsuse rakendamisele on t\u00e4ienduseks p\u00fc\u00fcdlustele valmistada paremaid transistoreid grafeenist,&#8221; lisas Mohanram. ,,See v\u00f5imaldab suuremat funktsionaalsust.&#8221; Uurimus demonstreeris, et \u00fcksik grafeentransistor v\u00f5iks tulevikus asendada mitut, seda tavap\u00e4rases integreeritud vooluringis.<\/p>\n<p><a href=\"http:\/\/www.physorg.com\/news\/2010-10-triple-mode-transistors-potential-graphene-based-amplifiers.html\">Allikas<\/a><\/p>\n<p>Teadusartikkel &#8220;<a href=\"http:\/\/pubs.acs.org\/doi\/abs\/10.1021\/nn1021583\">Triple-Mode Single-Transistor Graphene Amplifier and Its Applications<\/a>&#8220;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Rice&#8217;i \u00dclikooli teadlaste l\u00e4bi viidud uurimust\u00f6\u00f6, mis kasutab \u00e4ra grafeeni laiaulatuslikke v\u00f5imeid, v\u00f5ib viia vooluringide rakendusteni, mis on hulga kompaktsemad ning paindlikumad kui praegu kasutatavad r\u00e4nip\u00f5hised tehnoloogiad lubavad. Kolme terminaliga, \u00fchetransistorilised grafeenip\u00f5hised v\u00f5imendid v\u00f5ivad saada v\u00f5tmeelementideks tuleviku elektroonikaseadmete vooluringides. Seesugust v\u00f5imendit saab t\u00f6\u00f6 k\u00e4igus positiivsete, negatiivsete v\u00f5i m\u00f5lemam\u00e4rgiliste laengukandjate abil seada t\u00f6\u00f6tama \u00fcksk\u00f5ik millisel kolmest [&hellip;]<\/p>\n","protected":false},"author":32,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[31,16],"tags":[],"class_list":{"0":"post-9434","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-rakenduslik-teadus","7":"category-teadusuudis","8":"entry","9":"has-post-thumbnail"},"_links":{"self":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/9434","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/users\/32"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=9434"}],"version-history":[{"count":0,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/9434\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=9434"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=9434"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=9434"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}