{"id":24230,"date":"2012-01-12T18:42:02","date_gmt":"2012-01-12T15:42:02","guid":{"rendered":"http:\/\/www.fyysika.ee\/uudised\/?p=24230"},"modified":"2012-01-12T18:42:02","modified_gmt":"2012-01-12T15:42:02","slug":"kvanttapid-kui-tuleviku-valgusallikad","status":"publish","type":"post","link":"https:\/\/www.fyysika.ee\/?p=24230","title":{"rendered":"Kvantt\u00e4pid kui tuleviku valgusallikad"},"content":{"rendered":"<p><strong>UT Dallase teadlased t\u00f6\u00f6tavad k\u00f5vasti, et m\u00f5ista kvantt\u00e4ppide loomust. Kvantt\u00e4ppe saaks tulevikus kasutada mitmel viisil, alustades inimeha valgustamisest k\u00f5rgtehnoloogilistes meditsiinilistes rakendustes ja l\u00f5petades energiaallikate efektiivsuse t\u00f5stmisega.<\/strong><\/p>\n<div id=\"attachment_24231\" style=\"width: 232px\" class=\"wp-caption alignleft\"><a href=\"http:\/\/www.fyysika.ee\/uudised\/wp-content\/uploads\/2012\/01\/QD_S.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-24231\" class=\"size-full wp-image-24231\" title=\"QD_S\" src=\"http:\/\/www.fyysika.ee\/uudised\/wp-content\/uploads\/2012\/01\/QD_S.jpg\" alt=\"\" width=\"222\" height=\"216\" \/><\/a><p id=\"caption-attachment-24231\" class=\"wp-caption-text\">Kvantt\u00e4ppide kolloidlahused UV valguses. Erineva suurusega kvantt\u00e4pid kiirgavat erinevat v\u00e4rvi valgust t\u00e4nu kvantvangistusele. Pilt: Wikipedia<\/p><\/div>\n<p>Need pisikesed pooljuht-nanoosakesed omavad aga ka varjuk\u00fclge &#8211; nad vilguvad ootamatult. Antud efekt on sarnane valgusti sisse ja v\u00e4lja l\u00fclitamisega, v\u00e4hendades seega tunduvalt valguskiirguse efektiivsust, kirjutab<a href=\"http:\/\/www.physorg.com\/news\/2012-01-tiny-quantum-dots-future-source.html\"> Physorg.com<\/a>.<\/p>\n<p>,,Kvantt\u00e4ppe peetakse j\u00e4rgmise p\u00f5lvkonna valgusallikatest t\u00e4nu nende efektiivsusele nii valguse neelamisel kui ka kiirgamisel,&#8221; s\u00f5nas <strong>Dr Anton Malko<\/strong>, UT Dallase kaasprofessor. ,,Vilkumise \u00e4ra hoidmine on v\u00f5ti nende laialdase kasutamiseni.&#8221;<\/p>\n<p>Malko ja kolleegid Los Alamose Riiklikust Laboratooriumist teatasid, et suurendades osakeste v\u00e4liskihi suurust, saab vilkumist alla suruda.<\/p>\n<p>Antud juhul muutsid teadlased nende kvantosakeste, mis on ligi miljardiku meetri suurused, kuju, suurendades neid neljast nanomeetrist ligi 15 nanomeetrini.<\/p>\n<p>,,Me n\u00e4gime, et sama protsess, mis p\u00f5hjustab t\u00e4ppide vilkumist, ei andnud osakeste suurendamisel enam sarnast efekti,&#8221; lausus Malko. ,,Me leidsime, et see protsess, nn. ,,Augeri&#8221; rekombinatsioon, s\u00f5ltub tugevasti kvantt\u00e4ppide v\u00e4liskihi paksusest ning kaotab paksu kihi korral vilkumise t\u00e4ielikult.&#8221;<\/p>\n<p>,,Selles n\u00e4htuses osalevate j\u00f5udude parem m\u00f5istmine viib loodetavasti viisini, kuidas neid ootamatuid k\u00e4itumisi kvantt\u00e4ppides v\u00e4hendada,&#8221; \u00fctles tal. Katkematu kiirgamisega kvantt\u00e4ppide valmistamine aitab kindlasti kaasa nende rakendustes nii biomeditsiinilises kuvamises kui ka kvantinformatsioont\u00f6\u00f6tluses.<\/p>\n<p><a href=\"http:\/\/www.physorg.com\/news\/2012-01-tiny-quantum-dots-future-source.html\">Allikas<\/a><\/p>\n<p>Teadusartikkel: &#8220;<a href=\"http:\/\/pubs.acs.org\/journal\/nalefd\">Direct Measurements of Lateral Variations of Schottky Barrier Height Across \u201cEnd-On\u201d Metal Contacts to Vertical Si Nanowires by Ballistic Electron Emission Microscopy<\/a>&#8220;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>UT Dallase teadlased t\u00f6\u00f6tavad k\u00f5vasti, et m\u00f5ista kvantt\u00e4ppide loomust. Kvantt\u00e4ppe saaks tulevikus kasutada mitmel viisil, alustades inimeha valgustamisest k\u00f5rgtehnoloogilistes meditsiinilistes rakendustes ja l\u00f5petades energiaallikate efektiivsuse t\u00f5stmisega. Need pisikesed pooljuht-nanoosakesed omavad aga ka varjuk\u00fclge &#8211; nad vilguvad ootamatult. Antud efekt on sarnane valgusti sisse ja v\u00e4lja l\u00fclitamisega, v\u00e4hendades seega tunduvalt valguskiirguse efektiivsust, kirjutab Physorg.com. ,,Kvantt\u00e4ppe peetakse [&hellip;]<\/p>\n","protected":false},"author":32,"featured_media":24231,"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-24230","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-rakenduslik-teadus","8":"category-teadusuudis","9":"entry"},"_links":{"self":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/24230","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=24230"}],"version-history":[{"count":0,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/24230\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/media\/24231"}],"wp:attachment":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=24230"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=24230"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=24230"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}