{"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\/lv\/new-era-for-cnt\/","title":{"rendered":"Jauna \u0113ra CNT: Jauna pieeja CNT me\u017eu audz\u0113\u0161anai"},"content":{"rendered":"

Oglek\u013ca nanocaurul\u012btes (CNT) ir oglek\u013ca alotropi, kas ir cilindriskas \u0161\u016bnas formas ar nano diametru. <\/p>\n\n\n\n

CNT piem\u012bt daudzas \u012bpa\u0161\u012bbas, piem\u0113ram, meh\u0101nisk\u0101 iztur\u012bba, elast\u012bba, vieglums, elektrisk\u0101 un siltuma vad\u012btsp\u0113ja, kas padara to par visperspekt\u012bv\u0101ko materi\u0101lu. <\/p>\n\n\n\n

Daudz\u0101s nozar\u0113s, tostarp elektronik\u0101, medic\u012bn\u0101, ener\u0123ijas uzglab\u0101\u0161an\u0101, sensoros un daudz\u0101s cit\u0101s, CNT tiek izmantoti liel\u0101 daudzum\u0101. Pieaugo\u0161ais piepras\u012bjums ir rad\u012bjis past\u0101v\u012bgu spiedienu uz CNT ra\u017eo\u0161anas palielin\u0101\u0161anu. <\/p>\n\n\n\n

\u0160\u0101da liela m\u0113roga CNT ra\u017eo\u0161ana ir k\u013cuvusi par galveno probl\u0113mu, kas kav\u0113 to pielieto\u0161anu. <\/p>\n\n\n\n

Izaicin\u0101juma risin\u0101\u0161ana :<\/p>\n\n\n\n

Parasti zin\u0101tnieki dod priek\u0161roku CNT me\u017eu audz\u0113\u0161anai, nevis to audz\u0113\u0161anai individu\u0101li. CNT me\u017ei ir vertik\u0101li izl\u012bdzin\u0101ti CNT mas\u012bvi, kas ir pa\u0161saliktie. <\/p>\n\n\n\n

To parasti veic, izmantojot \u0137\u012bmisko tvaiku uzkl\u0101\u0161anu ar fiks\u0113tu katalizatoru uz substr\u0101ta, kas v\u0113l\u0101k tiek atdal\u012bts no CNT me\u017ea, lai ieg\u016btu augstas t\u012br\u012bbas pak\u0101pes materi\u0101lu. <\/p>\n\n\n\n

Lai gan \u0161is process pied\u0101v\u0101 daudz priek\u0161roc\u012bbu, vien\u012bg\u0101 b\u016btisk\u0101k\u0101 probl\u0113ma, ar ko n\u0101kas saskarties, ir t\u0101 ilgums. <\/p>\n\n\n\n

L\u012bdz \u0161im p\u0113tnieki ir sp\u0113ju\u0161i izaudz\u0113t CNT me\u017eu l\u012bdz 2 cm, izmantojot t\u0101dus katalizatorus k\u0101 dzelzs (Fe) uz alum\u012bnija oks\u012bda (Al2O3) nes\u0113ja (CNT garumam ir b\u016btiska noz\u012bme, kad runa ir par to \u012bpa\u0161\u012bb\u0101m, t\u0101p\u0113c ir nepiecie\u0161ams \u0146emt v\u0113r\u0101 \u0161o aspektu). <\/p>\n\n\n\n

Tas ietekm\u0113 t\u0101 r\u016bpniecisko v\u0113rt\u012bbu, ierobe\u017eojot pieg\u0101di un palielinot materi\u0101la izmaksas. <\/p>\n\n\n\n

Ir veikts revolucion\u0101rs atkl\u0101jums, kas ir piln\u012bb\u0101 main\u012bjis sp\u0113les gaitu. <\/p>\n\n\n\n

Nesen zin\u0101tnieku komanda no Jap\u0101nas, izmantojot jaunu pieeju, ir re\u0123istr\u0113jusi CNT me\u017eu garumu l\u012bdz 14 cm. Vi\u0146u p\u0113t\u012bjums nesen public\u0113ts \u017eurn\u0101l\u0101 Carbon. <\/p>\n\n\n\n

Waseda Universit\u0101tes asist\u0113jo\u0161ais profesors Hisa\u0161i Sugime (Hisashi Sugime) un vi\u0146a komanda atkl\u0101ja, ka CNT p\u0101rtrauca augt, jo iepriek\u0161 izmantotaj\u0101 katalizator\u0101 (Fe-Al2Ox) notika pak\u0101peniskas struktur\u0101las izmai\u0146as. <\/p>\n\n\n\n

B\u016bt\u012bb\u0101 CNT bl\u012bvums, kas ir atkar\u012bgs no akt\u012bvo katalizatoru skaita, ir nepietiekams, lai saglab\u0101tu pa\u0161neso\u0161u strukt\u016bru, un me\u017ea aug\u0161ana beidzas. <\/p>\n\n\n\n

T\u0101p\u0113c izmantotajam katalizatoram j\u0101b\u016bt struktur\u0101li un \u0137\u012bmiski stabilam.  <\/p>\n\n\n\n

Vi\u0146u pieeja bija main\u012bt tehniku, lai apspiestu \u0161o nestabilit\u0101ti. <\/p>\n\n\n\n

Vi\u0146i to pan\u0101ca, pievienojot gadol\u012bnija (Gd) sl\u0101ni iepriek\u0161\u0113jam katalizatoram, kas p\u0101rkl\u0101ts ar n tipa sil\u012bcija substr\u0101tu. <\/p>\n\n\n\n

Gadol\u012bnija sl\u0101nis pal\u012bdz\u0113ja nov\u0113rst katalizatora boj\u0101\u0161anos un, savuk\u0101rt, \u013c\u0101va CNT me\u017eam izaugt par 5 cm. <\/p>\n\n\n\n

Lai pan\u0101ktu v\u0113lamo garumu, vi\u0146i katalizatoru tur\u0113ja kamer\u0101, ko sauc par aukst\u0101s g\u0101zes \u0137\u012bmisk\u0101s tvaiku uzkl\u0101\u0161anas (CVD) kameru. <\/p>\n\n\n\n

Katalizators tika iepriek\u0161\u0113ji apstr\u0101d\u0101ts, uzturot temperat\u016bru l\u012bdz 750 \u00b0C un nodro\u0161inot nelielu Fe un Al tvaiku koncentr\u0101ciju istabas temperat\u016br\u0101. <\/p>\n\n\n\n

Tas pal\u012bdz\u0113ja saglab\u0101t katalizatora strukt\u016bru l\u012bdz pat 26 stund\u0101m, kas savuk\u0101rt veicin\u0101ja CNT me\u017ea aug\u0161anu. <\/p>\n\n\n\n

P\u0113c r\u016bp\u012bg\u0101m anal\u012bz\u0113m vi\u0146i var\u0113ja veiksm\u012bgi re\u0123istr\u0113t CNT me\u017ea garumu 14 cm. <\/p>\n\n\n\n

\u0160is iev\u0113rojamais progress ir papla\u0161in\u0101jis CNT pielietojuma aspektus.To sasniegumi ir pav\u0113ru\u0161i jaunus apv\u0101r\u0161\u0146us att\u012bsto\u0161aj\u0101m nozar\u0113m. <\/p>\n\n\n\n

Tas var\u0113tu main\u012bt pieeju nanotehnolo\u0123ij\u0101m un nanozin\u0101tnei turpm\u0101kajos p\u0113t\u012bjumos. <\/p>\n\n\n\n

Lai las\u012btu pilnu public\u0113to p\u0113t\u012bjuma rakstu, skatiet zem\u0101k nor\u0101d\u012bto DOI. <\/p>\n\n\n\n

Atsauce :<\/p>\n\n\n\n

Hisashi Sugime, Toshihiro Sato, Rei Nakagawa, Tatsuhiro Hayashi, Yoku Inoue, Suguru Noda. \u012apa\u0161i gar\u0161 oglek\u013ca nanocauru\u013cu me\u017es, izmantojot dzelzs un alum\u012bnija tvaiku avotu in situ papildin\u0101jumus. Ogleklis<\/strong>, 2020; https:\/\/doi.org\/10.1016\/j.carbon.2020.10.066<\/a><\/p>\n\n\n\n

Ja esat p\u0113tnieks nanotehnolo\u0123iju jom\u0101, m\u0113s varam pal\u012bdz\u0113t jums izveidot infografikas par saist\u012bt\u0101m t\u0113m\u0101m sada\u013c\u0101 Mind the graph. <\/p>","protected":false},"excerpt":{"rendered":"

Oglek\u013ca nanocaurul\u012btes (CNT) ir oglek\u013ca alotropi, kas ir cilindriskas \u0161\u016bnas formas ar nano diametru. CNT piem\u012bt daudzas \u012bpa\u0161\u012bbas, piem\u0113ram, meh\u0101nisk\u0101 iztur\u012bba, elast\u012bba, vieglums, elektrisk\u0101 un siltuma vad\u012btsp\u0113ja, kas padara CNT par daudzsolo\u0161\u0101ko materi\u0101lu. Daudz\u0101s nozar\u0113s, tostarp elektronik\u0101, medic\u012bn\u0101, ener\u0123ijas uzglab\u0101\u0161an\u0101, sensoros un daudz\u0101s cit\u0101s, CNT tiek izmantoti liel\u0101 daudzum\u0101. Pieaugo\u0161\u0101 [...]<\/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":"\nNew 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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