Low frequency vibrations observed on assemblies of vertical multiwall carbon nanotubes by Brillouin light scattering: determination of the Young modulus

被引：3

作者：

Andalouci, Ahmed ^{[1
]}

Roussigne, Yves ^{[1
]}

Farhat, Samir ^{[1
]}

Cherif, Salim Mourad ^{[1
]}

机构：

[1] Univ Sorbonne Paris Nord, LSPM, CNRS, UPR 3407, F-93430 Villetaneuse, France

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2020年 / 32卷 / 45期

关键词：

carbon nanotubes; elastic constant; Brillouin light scattering; MECHANICAL-PROPERTIES; ELASTIC PROPERTIES; COMPOSITES; RAMAN; GRAPHITE; STRENGTH; SPECTRA; ARRAYS;

D O I：

10.1088/1361-648X/aba3ee

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Assemblies of vertical multiwall carbon nanotubes, (VCNTs), have been synthesized by coupling dewetting of cobalt or nickel ultrathin layers and plasma enhanced chemical vapor deposition. Electronic microscopies revealed well defined micrometer length nanotubes with inner radius of 3-4 nm and outer radius of 8-9 nm. Similar structural qualities have been revealed by Raman measurements. Dynamic behaviour of these VCNTs assemblies have been studied by means of Brillouin light scattering technique. The measured inelastic light scattering from VCNTs is attributed to bending vibrations of the nanotubes. The observed frequencies on both assemblies, considered as dense effective media, are compatible with an effective Young modulus of 850 GPa.

引用

页数：10