Computer simulation and study of radiation defects in graphene

Ilyin, A.M.; Daineko, E.A.; Beall, Gary W.

doi:10.1016/j.physe.2009.08.021

Cited by 15 publications

(14 citation statements)

References 8 publications

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“…Graphene can be modified and cut during the particle irradiation, and, as a result, it can change the physical and chemical properties of graphene as needed [15,16]. Recent research shows [17][18][19] that the graphene and its composites can be tailored, modified, and structurally designed by using irradiation technology, which can achieve the purpose of precise control performance.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Ion Irradiation Induced Defects on Mechanical Properties of Graphene/Copper Layered Nanocomposites

Yao

Fan

2019

Metals

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One of the miraculous functions of graphene is to use its defects to alter the material properties of graphene composites and, thereby, expand the application of graphene in other fields. In this paper, various defects have been created in graphene by using ion irradiation. Defective graphene is sandwiched between two copper layers. A numerical model of Graphene/Copper layered composites after irradiation damage was established by the molecular dynamics method. The effects of ion irradiation and temperature coupling on defective graphene/copper composites were studied. The results show that there are a lot of empty defects in graphene after irradiation injury, which will produce more incomplete bonding. Although the bonds between carbon atoms can be weakened, defective graphene still enhances the mechanical properties of pure copper. At the same time, the location and arrangement of defects have a great influence on the mechanical stability of graphene/copper composites, and the arrangement of empty defects has different effects on deformation behavior and the stress transfer mechanism. It can be concluded that the defects formed by radiation have an effect on the physical properties of two-dimensional materials. Therefore, irradiation technology can be used to artificially control the formation of defects, and then make appropriate adjustments to their properties. This can not only optimize the radiation resistance and mechanical properties of nuclear materials, but also expand the application of graphene in electronic devices and other fields.

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Section: Introductionmentioning

confidence: 99%

The Effect of Ion Irradiation Induced Defects on Mechanical Properties of Graphene/Copper Layered Nanocomposites

Yao

Fan

2019

Metals

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“…No doubt, this aspect of the problem must be investigated with all attention. Moreover, recent theoretical investigations Ilyin et al (2009) of irradiated graphene and bridge-like defects in carbon nanostructures Ilyin et al (2010) have allowed to predict, that some types of structural defects, which can be produced by irradiation can essentially improve mechanical and physical properties of FLG nanostructures. Therefore, special selected irradiation can be used as a technological tool of modification of such carbon nanostructures In this paper, in order of better understanding of the physical mechanisms of damaging process in such nanostructures, we performed irradiation of FLG arranged on different substrates (dielectric and metallic) in the wide interval of SEM beam energies and used the Raman spectroscopy as the basic technique of inspection of structural changes.…”

Section: Introductionmentioning

confidence: 99%

Structural damaging in few -layer graphene due to the low energy electron irradiation

Гусейнов¹,

Baigarinova²,

Ilyin³

2016

Advances in nano research

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Data of Raman spectroscopy from graphene and few-layer graphene (FLG) irradiated by SEM electron beam in the range of energies 0.2-30 keV are presented. The obvious effect of damaging the nanostructures by all used beam energies for specimens placed on insulator substrates (SiO 2) was revealed. At the same time, no signs of structural defects were observed in the cases when FLG have been arranged on metallic substrate. A new physical mechanism of under threshold energy defect production supposing possible formation of intensive electrical charged puddles on insulator substrate surface is suggested.

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“…Recently signs of radiation damages were observed even after conventional SEM investigations with electron energies equal to and less than 30 keV [10,11]. It should be noticed that some data correspond ing to radiation effects in monolayer graphene were recently reported [12][13][14][15], however, there is very little volume of information corresponding the experimental investigatio ns of radiation effects in few-laye r graphene [16]. No doubt, this aspect of the problem must be investigated with all attention.…”

Section: Introductionmentioning

confidence: 99%