Thermal buckling behavior of defective CNTs under pre-load: A molecular dynamics study
JOURNAL OF MOLECULAR GRAPHICS & MODELLING, cilt.73, ss.30-35, 2017 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 73
- Basım Tarihi: 2017
- Doi Numarası: 10.1016/j.jmgm.2017.01.017
- Dergi Adı: JOURNAL OF MOLECULAR GRAPHICS & MODELLING
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.30-35
- Kocaeli Üniversitesi Adresli: Hayır
Özet
Current study is concentrated on the extraordinary properties of defective carbon nanotubes (CNTs). The role of vacancy defects in thermal buckling response of precompressed CNTs is explored via molecular dynamics (MD) simulations. Defective CNTs are initially compressed at a certain ratio of their critical buckling strain and then undergo a uniform temperature rise. Comprehensive study is implemented on both armchair and zigzag CNTs with different vacancy defects including monovacancy, symmetric bivacancy and asymmetric bivacancy. The results reveal that defects have a pronounced impact on the buckling behavior of CNTs; interestingly, defective CNTs under compressive pre-load show higher resistance to thermal buckling than pristine ones. In the following, the buckling response of defective CNTs is shown to be dependent on the vacancy defects, location of defects and chirality. (C) 2017 Elsevier Inc. All rights reserved.