{"id":11998,"date":"2020-12-07T10:07:19","date_gmt":"2020-12-07T12:07:19","guid":{"rendered":"https:\/\/mindthegraph.com\/blog\/?p=11998"},"modified":"2023-01-05T14:32:34","modified_gmt":"2023-01-05T17:32:34","slug":"new-era-for-cnt","status":"publish","type":"post","link":"https:\/\/mindthegraph.com\/blog\/tr\/new-era-for-cnt\/","title":{"rendered":"CNT'ler i\u00e7in Yeni D\u00f6nem: CNT Ormanlar\u0131n\u0131 B\u00fcy\u00fctmek \u0130\u00e7in Yeni Bir Yakla\u015f\u0131m"},"content":{"rendered":"<p>Karbon nanot\u00fcp (CNT), nano \u00e7apl\u0131 silindirik bal pete\u011fi \u015feklinde olan karbon allotroplar\u0131d\u0131r. <\/p>\n\n\n\n<p>CNT'lerin mekanik mukavemet, esneklik, hafiflik, elektrik ve termal iletkenlik gibi \u00e7ok say\u0131da \u00f6zelli\u011fi onu en umut verici malzeme haline getirmektedir. <\/p>\n\n\n\n<p>Elektronik, t\u0131p, enerji depolama, sens\u00f6rler ve daha pek \u00e7ok sekt\u00f6r CNT'leri y\u00fcksek say\u0131larda kullanmaktad\u0131r. Artan talep, CNT'lerin \u00fcretiminin y\u00fckseltilmesi \u00fczerinde s\u00fcrekli bir bask\u0131 olu\u015fturmu\u015ftur. <\/p>\n\n\n\n<p>CNT'lerin bu b\u00fcy\u00fck \u00f6l\u00e7ekli \u00fcretimi, uygulamalar\u0131n\u0131 engelleyen ana zorluk haline gelmi\u015ftir.&nbsp;<\/p>\n\n\n\n<p>Zorluklar\u0131n \u00dcstesinden Gelmek :<\/p>\n\n\n\n<p>Bilim insanlar\u0131 genellikle CNT'leri tek tek b\u00fcy\u00fctmek yerine CNT ormanlar\u0131n\u0131 b\u00fcy\u00fctmeyi tercih etmektedir.  CNT ormanlar\u0131, kendi kendine bir araya gelen dikey olarak hizalanm\u0131\u015f CNT dizileridir. <\/p>\n\n\n\n<p>Bu genellikle, daha sonra y\u00fcksek safl\u0131kta malzeme elde etmek i\u00e7in CNT orman\u0131ndan ayr\u0131lan bir alt tabaka \u00fczerinde sabit bir kataliz\u00f6r varl\u0131\u011f\u0131nda kimyasal buhar biriktirme i\u015flemi ile ger\u00e7ekle\u015ftirilir. <\/p>\n\n\n\n<p>Bu s\u00fcre\u00e7 \u00e7ok say\u0131da avantaj sunsa da, kar\u015f\u0131la\u015f\u0131lan tek \u00f6nemli sorun uzunlu\u011fudur. <\/p>\n\n\n\n<p>\u015eimdiye kadar ara\u015ft\u0131rmac\u0131lar, al\u00fcminyum oksit (Al2O3) deste\u011fi \u00fczerinde demir (Fe) gibi kataliz\u00f6rler kullanarak CNT orman\u0131n\u0131 2 cm'ye kadar b\u00fcy\u00fctebilmi\u015flerdir (CNT'lerin uzunlu\u011fu, \u00f6zellikleri s\u00f6z konusu oldu\u011funda hayati bir rol oynamaktad\u0131r, bu nedenle bu y\u00f6n\u00fc dikkate almak gerekir). <\/p>\n\n\n\n<p>Bu durum, arz\u0131 s\u0131n\u0131rland\u0131rarak ve malzemenin maliyetini art\u0131rarak end\u00fcstriyel de\u011ferini etkilemektedir.&nbsp;<\/p>\n\n\n\n<p>Oyunu tamamen de\u011fi\u015ftiren devrim niteli\u011finde bir ke\u015fif yap\u0131ld\u0131. <\/p>\n\n\n\n<p>Yak\u0131n zamanda Japonya'dan bir grup bilim insan\u0131 yeni bir yakla\u015f\u0131mla CNT ormanlar\u0131n\u0131n uzunlu\u011funu 14 cm'ye kadar kaydetti. \u00c7al\u0131\u015fmalar\u0131 ge\u00e7ti\u011fimiz g\u00fcnlerde Carbon dergisinde yay\u0131mland\u0131.&nbsp;<\/p>\n\n\n\n<p>Waseda \u00dcniversitesi'nde Yard\u0131mc\u0131 Do\u00e7ent olan Hisashi Sugime ve ekibi, daha \u00f6nce kullan\u0131lan kataliz\u00f6rdeki (Fe-Al2Ox) kademeli yap\u0131sal de\u011fi\u015fiklik nedeniyle CNT'lerin b\u00fcy\u00fcmesinin durdu\u011funu ke\u015ffetti. <\/p>\n\n\n\n<p>Temel olarak, aktif kataliz\u00f6rlerin say\u0131s\u0131na ba\u011fl\u0131 olan CNT'lerin yo\u011funlu\u011fu, kendi kendini destekleyen bir yap\u0131y\u0131 s\u00fcrd\u00fcrmek i\u00e7in yetersiz oldu\u011funda, orman b\u00fcy\u00fcmesi sona erer. <\/p>\n\n\n\n<p>Bu nedenle, kullan\u0131lan kataliz\u00f6r yap\u0131sal ve kimyasal olarak stabil kalmal\u0131d\u0131r.&nbsp; <\/p>\n\n\n\n<p>Onlar\u0131n yakla\u015f\u0131m\u0131, bu istikrars\u0131zl\u0131\u011f\u0131 bast\u0131rmak i\u00e7in tekni\u011fi de\u011fi\u015ftirmekti. <\/p>\n\n\n\n<p>Bunu, n-tipi bir silikon alt tabaka ile kaplanm\u0131\u015f \u00f6nceki kataliz\u00f6re gadolinyum (Gd) tabakas\u0131 ekleyerek ba\u015fard\u0131lar. <\/p>\n\n\n\n<p>Gadolinyum tabakas\u0131 kataliz\u00f6r\u00fcn bozulmas\u0131n\u0131 \u00f6nlemeye yard\u0131mc\u0131 olmu\u015f ve CNT orman\u0131n\u0131n 5 cm kadar b\u00fcy\u00fcmesini sa\u011flam\u0131\u015ft\u0131r. <\/p>\n\n\n\n<p>Ayr\u0131ca, istenen uzunlu\u011fu elde etmek i\u00e7in kataliz\u00f6r\u00fc so\u011fuk gaz kimyasal buhar biriktirme (CVD) odas\u0131 ad\u0131 verilen bir odada tuttular. <\/p>\n\n\n\n<p>Kataliz\u00f6r, s\u0131cakl\u0131\u011f\u0131 750\u00b0C'ye kadar tutarak ve oda s\u0131cakl\u0131\u011f\u0131nda k\u00fc\u00e7\u00fck konsantrasyonlarda Fe ve Al buharlar\u0131 sa\u011flayarak \u00f6n i\u015fleme tabi tutulmu\u015ftur. <\/p>\n\n\n\n<p>Bu, kataliz\u00f6r yap\u0131s\u0131n\u0131n 26 saate kadar korunmas\u0131na yard\u0131mc\u0131 oldu ve bu da CNT orman\u0131n\u0131n b\u00fcy\u00fcmesini te\u015fvik etti. <\/p>\n\n\n\n<p>Dikkatli analizlerin ard\u0131ndan, CNT orman\u0131n\u0131n uzunlu\u011funu 14 cm olarak ba\u015far\u0131yla kaydedebildiler.&nbsp;<\/p>\n\n\n\n<p>Elde ettikleri ba\u015far\u0131, geli\u015fmekte olan end\u00fcstriler i\u00e7in yeni bir ufuk a\u00e7m\u0131\u015f ve bu kayda de\u011fer ilerleme CNT'lerin uygulama alanlar\u0131n\u0131 geni\u015fletmi\u015ftir. <\/p>\n\n\n\n<p>Gelecekteki ara\u015ft\u0131rmalar i\u00e7in nanoteknoloji ve nano-bilim yakla\u015f\u0131m\u0131n\u0131 de\u011fi\u015ftirebilir.&nbsp;<\/p>\n\n\n\n<p>Yay\u0131nlanan ara\u015ft\u0131rma makalesinin tamam\u0131n\u0131 okumak i\u00e7in a\u015fa\u011f\u0131daki DOI'ye bak\u0131n\u0131z.&nbsp;<\/p>\n\n\n\n<p>Referans :<\/p>\n\n\n\n<p>Hisashi Sugime, Toshihiro Sato, Rei Nakagawa, Tatsuhiro Hayashi, Yoku Inoue, Suguru Noda. Demir ve al\u00fcminyum buhar kaynaklar\u0131n\u0131n in situ takviyeleri yoluyla ultra uzun karbon nanot\u00fcp orman\u0131. <strong>Karbon<\/strong>, 2020; <a href=\"https:\/\/doi.org\/10.1016\/j.carbon.2020.10.066\">https:\/\/doi.org\/10.1016\/j.carbon.2020.10.066<\/a><\/p>\n\n\n\n<p>Nanoteknoloji alan\u0131nda \u00e7al\u0131\u015fan bir ara\u015ft\u0131rmac\u0131ysan\u0131z, Mind the graph'ta ilgili konularda infografikler olu\u015fturman\u0131za yard\u0131mc\u0131 olabiliriz. <\/p>","protected":false},"excerpt":{"rendered":"<p>Karbon nanot\u00fcp (CNT), nano \u00e7apl\u0131 silindirik bal pete\u011fi \u015feklinde olan karbon allotroplar\u0131d\u0131r. CNT'lerin mekanik mukavemet, esneklik, hafiflik, elektrik ve termal iletkenlik gibi \u00e7ok say\u0131da \u00f6zelli\u011fi onu en umut verici malzeme haline getirmektedir. Elektronik, t\u0131p, enerji depolama, sens\u00f6rler ve daha pek \u00e7ok end\u00fcstri CNT'leri y\u00fcksek say\u0131larda kullanmaktad\u0131r. Artan [...]<\/p>","protected":false},"author":4,"featured_media":11999,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[959],"tags":[554],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>New Era for CNTs: A New Approach to Grow the CNT Forests MTG<\/title>\n<meta name=\"description\" content=\"Read this blog to get an idea of what is the new way of growing CNT forests. 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He has a Ph.D. and solid scientific background in Psychopharmacology and experience as a Guest Researcher at the Max Planck Institute of Psychiatry (Germany) and Researcher in D'Or Institute for Research and Education (IDOR, Brazil). Fabricio holds over 2500 citations in Google Scholar. He has 10 years of experience in small innovative businesses, with relevant experience in product design and innovation management. 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