نتایج جستجو برای: SiCNTs

تعداد نتایج: 9  

Journal: :Nano letters 2006
Giannis Mpourmpakis George E Froudakis George P Lithoxoos Jannis Samios

A multiscale theoretical approach is used for the investigation of hydrogen storage in silicon-carbon nanotubes (SiCNTs). First, ab initio calculations at the density functional level of theory (DFT) showed an increase of 20% in the binding energy of H2 in SiCNTs compared with pure carbon nanotubes (CNTs). This is explained by the alternative charges that exist in the SiCNT walls. Second, class...

Journal: :Materials research express 2021

Abstract Since much attention has been paid to the targeted drug delivery system, using molecular dynamics simulation, present work devoted clarify potential of silicon carbide nanotubes (SiCNTs) as a new carrier for three common anti-cancer drugs temozolomide, carmustine, and cisplatin. Three zigzag single-walled with different diameters, i.e. SiC(18,0), SiC(20,0), SiC(22,0), in pure decorated...

Journal: :International Journal Of Engineering & Applied Sciences 2016

Journal: :journal of physical and theoretical chemistry 0
mahdi rezaei sameti department of physical chemistry, faculty science, malayer university, malayer m. rakhshi department of chemistry, university of kashan, kashan, iran

in the present study we focused on the electronic and structural properties of na and mg adsorption on the surface of the (6, 6) armchair sicnts. the adsorption energy (eads), band gap energy (eg), partial density of state (pdos), chemical potential (μ), global hardness (η), electrophilicity index (ω), global softness (s), work function values (φ) and work function change (δφ) are calculated by...

M. Rakhshi Mahdi Rezaei Sameti,

In the present study we focused on the electronic and structural properties of Na and Mg adsorption on the surface of the (6, 6) armchair SiCNTs. The adsorption energy (Eads), band gap energy (Eg), partial density of state (PDOS), chemical potential (μ), global hardness (η), electrophilicity index (ω), global softness (S), work function values (φ) and work function change (Δφ) are calculated by...

Journal: :International journal of engineering and applied sciences 2022

Silicon carbide nanotube (SiCNT) come forward in the great variety of nanotubes with higher durability until 1600 oC (in air) while carbon can stay stable 600 air). First five buckling loads single SiCNT placed between source and drain metal electrodes nano sized field effect transistors (FET) is investigated using two different molecular dynamics methods. L.A.M.M.P.S. software Gromacs package ...

Journal: :journal of physical & theoretical chemistry 2009
goudarz m. rouzbehani temer s. ahmadi ahmed seif

geometrical structure, nuclear magnetic resonance (n1,1it) chemical shielding tensors, and chemical shiftsof silicon and carbon nucler are investigated for twn infinite size zigzag and armchair single-walled siliconcarbide nanotabes (sicnts). geometrical structures of sients, sit bonds and bond angles of st and cvertices in both zigzag and armchair nanotubes, indicate that bond lengths are appr...

Ahmed Seif Goudarz M. Rouzbehani Temer S. Ahmadi

Geometrical structure, nuclear magnetic resonance (N1,1It) chemical shielding tensors, and chemical shiftsof silicon and carbon nucler are investigated for twn infinite size zigzag and armchair single-walled siliconcarbide nanotabes (SiCNTs). Geometrical structures of SieNTs, Sit bonds and bond angles of St and Cvertices in both zigzag and armchair nanotubes, Indicate that bond lengths are appr...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده علوم انسانی 1388

پایان نامه حاضر مشتمل بر سه بخش کار تحقیقاتی است. این سه بخش در برگیرنده محاسبات مفصل و کامل بر پایه روش dft در سطوح مختلف بر روی تعداد زیادی از نانوحلقه ها، نانونوارها و نانولوله های خاص است. بخش اول: [n]پیرازین سیکلاسن ها (نانوحلقه های پیرازینی) با فرمول بسته (cn)2n در ساختارهایی با n = 5,10,12 دارای حالت پایه یک تایی لایه بسته و در ساختاری با n = 8 دارای حالت پایه سه تایی، با اختلاف انرژی ...

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