ФРАКТАЛДЫ ПІШІНДІ НАНОБӨЛШЕКТЕРДІҢ ЖЫЛУ ӨТКІЗГІШТІК КОЭФФИЦИЕНТІНІҢ ТОРЛЫ ҚҰРАУШЫСЫ ТУРАЛЫ СҰРАҚҚА
DOI:
https://doi.org/10.31489/2022No3/10-17Кілт сөздер:
термоэлектрлік материалдар, жылу өткізгіштік, нанобөлшектер, фонондар, фракталдық өлшемділікАңдатпа
Нанобөлшектерден көлемді наноқұрылымды материалдарды алу үшін аддитивті технологияларды пайдалану тиімді және коммерциялық қол жетімді термоэлектрлік энергия түрлендіргіштерін құрудың ең перспективті бағыттарының бірі болып табылады. Наноқұрылымдау термоэлектрлік материалды анықтайтын тасымалдау қасиеттерін іріктеп өзгертуге мүмкіндік береді. Берілген жұмыста кристалдық тордың тербелістер үлесінің (іс жүзінде оны азайту қажет) таза зат нанобөлшегінің жылу өткізгіштік коэффициентіне оның морфологиясына айтарлықтай тәуелділігінен тұратын тағы бір әсер ұсынылып көрсетілген. Нанобөлшектің морфологиясы оның тиімді диаметрінің, фракталдық өлшемінің және бетінің кедір-бұдырының шамаларымен берілген. Төмен температурадағы таза висмут нанобөлшектерінің мысалында бөлшек морфологиясының "күрделенуімен" тордың жылу өткізгіштігінің айтарлықтай төмендеуі көрсетілген. Жұмыстың қорытқы бөлімінде нанобөлшектер ансамбльдерінің бірқатар сипаттамаларын есептеу әдістері ұсынылған, сонымен қатар фракталды өлшемді эксперименттік анықтау әдістемесі талқыланған
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