Self-healing phenomena of graphene: potential and applications

被引：21
|
作者：
VijayaSekhar, K. [2 ]
Debroy, Sanghamitra [1 ]
Miriyala, V. Pavan Kumar [1 ]
Acharyya, Swati Ghosh [2 ]
Acharyya, Amit [1 ]
机构：
[1] Indian Inst Technol, Dept Elect Engn, Hyderabad, Andhra Pradesh, India
[2] Univ Hyderabad, Sch Engn Sci & Technol, Hyderabad 500134, Andhra Pradesh, India
来源：
OPEN PHYSICS | 2016年 / 14卷 / 01期
关键词：
Graphene; Sub-nano sensor; crack detection; crack healing; defects; artificial skin; ARTIFICIAL SKIN; MECHANICAL-PROPERTIES; MOLECULAR-DYNAMICS; TRANSISTORS; TEMPERATURE; ENERGY;
D O I：
10.1515/phys-2016-0040
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The present study investigates the self healing behavior of both pristine and defected single layer graphene using a molecular dynamic simulation. Single layer graphene containing various defects such as preexisting vacancies and differently oriented pre-existing cracks were subjected to uniaxial tensile loading till fracture occurred. Once the load was relaxed, the graphene was found to undergo self healing. It was observed that this self healing behaviour of cracks holds irrespective of the nature of pre-existing defects in the graphene sheet. Cracks of any length were found to heal provided the critical crack opening distance lies within 0.3-0.5 nm for a pristine sheet and also for a sheet with pre-existing defects. Detailed bond length analysis of the graphene sheet was done to understand the mechanism of self healing of graphene. The paper also discusses the immense potential of the self healing phenomena of graphene in the field of graphene based sub-nano sensors for crack sensing.
引用
收藏
页码：364 / 370
页数：7
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