Strain dependent resistance in chemical vapor deposition grown graphene

Fu, Xuewen; Liao, Zhi-Min; Zhou, Jianxin; Zhou, Yang-Bo; Wu, Han‐Chun; Zhang, Rui; Jing, Guangyin; Xu, Jun; Wu, Xiaosong; Guo, Wanlin; Yu, Dapeng

doi:10.1063/1.3663969

Cited by 215 publications

(186 citation statements)

References 23 publications

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“…Cracks were generated in the graphene sheet by application of a tensile loading up to its ultimate tensile strength at room temperature. The recent research of Yu et al found that transferred graphene on PDMS grown by CVD has a higher gauge factor of 151 [46]. This shows that there will be change in resistivity of the graphene with a change in mechanical strain.…”

Section: Potential Application Of Self Healing Phenomena Of Graphenementioning

confidence: 99%

Self-healing phenomena of graphene: potential and applications

et al. 2016

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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.

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Section: Potential Application Of Self Healing Phenomena Of Graphenementioning

confidence: 99%

Self-healing phenomena of graphene: potential and applications

et al. 2016

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“…1,2 Strain engineering in graphene is extensively studied because of the possibility of introducing a gap to graphene. 3,4 It has been proven to be feasible to impose uniaxial strain to graphene by stretching or bending the graphene-coated flexible substrates including polydimethylsiloxane (PDMS), 5 polymethyl methacrylate (PMMA) 6 and polyethylene terephthalate (PET). 7,8 However, these investigations are limited to uniaxial strain, and such type of strain is relatively large.…”

mentioning

confidence: 99%

Effects of controllable biaxial strain on the Raman spectra of monolayer graphene prepared by chemical vapor deposition

Jie¹,

Hui²,

Zhang³

et al. 2013

Applied Physics Letters

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Controllable biaxial strain is delivered to monolayer graphene prepared by chemical vapor deposition via applying an electric field to the underlying piezoelectric [Pb(Mg1/3Nb2/3)O3]0.7-[PbTiO3]0.3 substrate. The effects of tunable strain on the Raman spectra of graphene are investigated in reversible and real-time manners. Such strain can result in a blue shift in 2D band of graphene. The calculations based on the Grüneisen parameter identify the actual biaxial strain to graphene, leading to a continuous 2D band shift, which is detected during the retention of bias voltage. The physical mechanism behind this unique Raman behavior is discussed.

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“…Lee et al [21] fabricated a graphene based strain sensor and reported a GF of 6.1 with an applied strain of 1%. The 'transferred graphene' on polydimethylsiloxane (PDMS) has a higher GF of 151 [22]. A reduction in GF with increased unstrained resistance of the sensor and number density of graphene flakes was observed with GNP spray coated sensors [23].…”

Section: Introductionmentioning

confidence: 98%

Non-monotonic piezoresistive behaviour of graphene nanoplatelet (GNP)-polymer composite flexible films prepared by solvent casting

Sai¹,

Varghese²,

Balasubramaniam³

2017

Express Polym. Lett.

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Abstract. Graphene-polymer nanocomposite films show good piezoresistive behaviour and it is reported that the sensitivity increases either with the increased sheet resistance or decreased number density of the graphene fillers. A little is known about this behaviour near the percolation region. In this study, graphene nanoplatelet (GNP)/poly (methyl methacrylate) (PMMA) flexible films are fabricated via solution casting process at varying weight percent of GNP. Electrical and piezoresistive behaviour of these films is studied as a function of GNP concentration. Piezoresistive strain sensitivity of the films is measured by affixing the film to an aluminium specimen which is subjected to monotonic uniaxial tensile load. The change in resistance of the film with strain is monitored using a four probe. An electrical percolation threshold at 3 weight percent of GNP is observed. We report non-monotonic piezoresistive behaviour of these films as a function GNP concentration. We observe an increase in gauge factor (GF) with unstrained resistance of the films up to a critical resistance corresponding to percolation threshold. Beyond this limit the GF decreases with unstrained resistance.

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Strain dependent resistance in chemical vapor deposition grown graphene

Cited by 215 publications

References 23 publications

Self-healing phenomena of graphene: potential and applications

Self-healing phenomena of graphene: potential and applications

Effects of controllable biaxial strain on the Raman spectra of monolayer graphene prepared by chemical vapor deposition

Non-monotonic piezoresistive behaviour of graphene nanoplatelet (GNP)-polymer composite flexible films prepared by solvent casting

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