{"id":14718,"date":"2016-09-01T15:20:29","date_gmt":"2016-09-01T12:20:29","guid":{"rendered":"http:\/\/109.232.216.219\/~bilimvegelecek\/?p=14718"},"modified":"2017-12-19T15:23:06","modified_gmt":"2017-12-19T12:23:06","slug":"biliminsanlari-isigin-daha-once-bilinmeyen-bir-formda-bulunabilecegini-kesfetti","status":"publish","type":"post","link":"https:\/\/bilimvegelecek.com.tr\/index.php\/2016\/09\/01\/biliminsanlari-isigin-daha-once-bilinmeyen-bir-formda-bulunabilecegini-kesfetti","title":{"rendered":"Biliminsanlar\u0131 \u0131\u015f\u0131\u011f\u0131n daha \u00f6nce bilinmeyen bir formda bulunabilece\u011fini ke\u015ffetti"},"content":{"rendered":"

Yeni bir \u00e7al\u0131\u015fma, \u0131\u015f\u0131\u011f\u0131 tek bir elektrona ba\u011flayarak onun yeni bir formunu yaratman\u0131n ve ikisinin \u00f6zelliklerini birle\u015ftirmenin m\u00fcmk\u00fcn oldu\u011funu \u00f6neriyor.<\/p>\n

Londra Kraliyet Koleji\u2019nden \u00e7al\u0131\u015fman\u0131n arkas\u0131ndaki biliminsanlar\u0131na g\u00f6re, \u0131\u015f\u0131k ile elektronun ba\u011flanmas\u0131, elektron yerine \u0131\u015f\u0131k demeti (foton) ile \u00e7al\u0131\u015fan devrelerin yap\u0131lmas\u0131n\u0131n yolunu a\u00e7abilir. Bu ayr\u0131ca ara\u015ft\u0131rmac\u0131lara atomdan k\u00fc\u00e7\u00fck par\u00e7ac\u0131klar\u0131 y\u00f6neten kuantum fiziksel fenomenleri g\u00f6r\u00fcn\u00fcr \u00f6l\u00e7ekte \u00e7al\u0131\u015fmak i\u00e7in de olanak tan\u0131yacak.<\/p>\n

Normal materyallerde, \u0131\u015f\u0131k y\u00fczeydeki ve materyalin i\u00e7indeki elektron y\u0131\u011f\u0131n\u0131 ile etkile\u015fime girer. Fakat, \u0131\u015f\u0131\u011f\u0131n ve yak\u0131nlarda ke\u015ffedilmi\u015f olan topolojik yal\u0131tkan adl\u0131 materyalin davran\u0131\u015flar\u0131n\u0131 modellemek i\u00e7in teorik fizi\u011fin kullan\u0131lmas\u0131yla, Kraliyet\u00a0 Koleji ara\u015ft\u0131rmac\u0131lar\u0131 \u0131\u015f\u0131\u011f\u0131n sadece y\u00fczeydeki tek bir elektronla etkile\u015fimde olabilece\u011fini buldular.<\/p>\n

Bu durum, \u0131\u015f\u0131\u011f\u0131n ve elektronun baz\u0131 \u00f6zelliklerinin i\u00e7 i\u00e7e ge\u00e7ti\u011fi bir e\u015fle\u015fme yaratabilir. Normalde, \u0131\u015f\u0131k d\u00fcz bir \u00e7izgi \u00fczerinde seyahat eder. Ama elektrona ba\u011fland\u0131\u011f\u0131 zaman, onun yolunu takip eder, yani materyalin y\u00fczeyini izler.<\/p>\n

Nature Communications\u2019<\/em>da yay\u0131mlanan \u00e7al\u0131\u015fmada, Dr. Vincenzo Giannini ve \u00e7al\u0131\u015fma arkada\u015flar\u0131 bu etkile\u015fimi topolojik yal\u0131tkandan yap\u0131lm\u0131\u015f nanopar\u00e7ac\u0131\u011f\u0131n (\u00e7ap\u0131 0.00000001 metrenin alt\u0131nda olan bir k\u00fcre) etraf\u0131nda modelledi. Modeller g\u00f6sterdi ki, \u0131\u015f\u0131\u011f\u0131n elektron niteliklerini almas\u0131 ve par\u00e7ac\u0131\u011f\u0131n etraf\u0131nda d\u00f6nmesi gibi, elektron da \u0131\u015f\u0131\u011f\u0131n baz\u0131 niteliklerini alabilir.<\/p>\n

Normalde, elektronlar materyal boyunca yol al\u0131rken (elektrik devrelerinde oldu\u011fu gibi) bir ar\u0131zayla kar\u015f\u0131la\u015ft\u0131klar\u0131nda dururlar. Bununla birlikte, Dr. Giannini\u2019nin tak\u0131m\u0131, nanopar\u00e7ac\u0131\u011f\u0131n y\u00fczeyinde kusurlar bulunsa bile, elektronlar\u0131n \u0131\u015f\u0131k sayesinde yol almaya devam edebildi\u011fini ke\u015ffetti. E\u011fer bu fotonik devrelere uyarlanabilirse, daha g\u00fc\u00e7l\u00fc ve bozulmalar, fiziksel kusurlar kar\u015f\u0131s\u0131nda daha az hassas olacakt\u0131r.<\/p>\n

Dr. Giannini, bu \u00e7al\u0131\u015fman\u0131n sonu\u00e7lar\u0131n\u0131n \u0131\u015f\u0131\u011f\u0131 alg\u0131lay\u0131\u015f bi\u00e7imimize ciddi etkilerde bulunaca\u011f\u0131n\u0131, topolojik yal\u0131tkanlar\u0131n sadece son 10 y\u0131l i\u00e7inde ke\u015ffedildi\u011fini, ama \u015fimdiden \u00e7al\u0131\u015fmak i\u00e7in yeni fenomenler ve fizikteki \u00f6nemli baz\u0131 kavramlar\u0131 incelemek i\u00e7in yeni yollar sundu\u011funu belirtti. \u00dcstelik, deneylerde modellenen fenomenleri g\u00f6zlemlemenin mevcut teknolojinin i\u00e7inde m\u00fcmk\u00fcn olmas\u0131 gerekti\u011fini ve tak\u0131m\u0131n\u0131n deneysel fizik\u00e7ilerle birlikte bu konuda \u00e7al\u0131\u015ft\u0131\u011f\u0131n\u0131 ekledi.<\/p>\n

Giannini\u2019ye g\u00f6re, \u0131\u015f\u0131\u011f\u0131n bu yeni formunun yarat\u0131ld\u0131\u011f\u0131 s\u00fcre\u00e7 daha b\u00fcy\u00fck \u00f6l\u00e7eklere ta\u015f\u0131nabilir ve bu sayede fenomenler daha kolay g\u00f6zlenebilir. \u015eu anda, kuantum fenomenler sadece \u00e7ok k\u00fc\u00e7\u00fck cisimlerde ya da derin so\u011futulmu\u015f cisimlerde g\u00f6zlenebiliyor, ama s\u00f6z konusu \u00e7al\u0131\u015fma bu tarz davran\u0131\u015flar\u0131n oda s\u0131cakl\u0131\u011f\u0131nda \u00e7al\u0131\u015f\u0131lmas\u0131na da olanak tan\u0131yabilir.<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Yeni bir \u00e7al\u0131\u015fma, \u0131\u015f\u0131\u011f\u0131 tek bir elektrona ba\u011flayarak onun yeni bir formunu yaratman\u0131n ve ikisinin \u00f6zelliklerini birle\u015ftirmenin m\u00fcmk\u00fcn oldu\u011funu \u00f6neriyor. Londra Kraliyet Koleji\u2019nden \u00e7al\u0131\u015fman\u0131n arkas\u0131ndaki biliminsanlar\u0131na g\u00f6re, \u0131\u015f\u0131k ile elektronun ba\u011flanmas\u0131, elektron yerine \u0131\u015f\u0131k demeti (foton) ile \u00e7al\u0131\u015fan devrelerin yap\u0131lmas\u0131n\u0131n yolunu a\u00e7abilir. Bu ayr\u0131ca ara\u015ft\u0131rmac\u0131lara atomdan k\u00fc\u00e7\u00fck par\u00e7ac\u0131klar\u0131 y\u00f6neten kuantum fiziksel fenomenleri g\u00f6r\u00fcn\u00fcr \u00f6l\u00e7ekte \u00e7al\u0131\u015fmak […]<\/p>\n","protected":false},"author":426,"featured_media":14719,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[188,19,26],"tags":[1676,288,1675,1085],"class_list":["post-14718","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-151-sayi","category-bilim-gundemi","category-fizik","tag-elektron","tag-fizik","tag-foton","tag-isik"],"acf":[],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t