Rational design of a binary metal alloy for chemical vapour deposition growth of uniform single-layer graphene

Dai, Boya; Fu, Lei; Zou, Zhiyu; Wang, Min; Xu, Haitao; Wang, Sheng; Liu, Zhongfan

doi:10.1038/ncomms1539

Cited by 237 publications

(182 citation statements)

References 27 publications

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“…Cu foil with low carbon solubility was also most commonly used to obtain predominantly single‐layer graphene 7, 19. In addition, Ni–molybdenum (Mo) alloy,20 platinum (Pt),21 cobalt (Co)22 also have been designed for large area monolayer graphene.…”

Section: Properties and Preparationmentioning

confidence: 99%

Human‐Like Sensing and Reflexes of Graphene‐Based Films

et al. 2016

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Humans have numerous senses, wherein vision, hearing, smell, taste, and touch are considered as the five conventionally acknowledged senses. Triggered by light, sound, or other physical stimulations, the sensory organs of human body are excited, leading to the transformation of the afferent energy into neural activity. Also converting other signals into electronical signals, graphene‐based film shows its inherent advantages in responding to the tiny stimulations. In this review, the human‐like senses and reflexes of graphene‐based films are presented. The review starts with the brief discussions about the preparation and optimization of graphene‐based film, as where as its new progress in synthesis method, transfer operation, film‐formation technologies and optimization techniques. Various human‐like senses of graphene‐based film and their recent advancements are then summarized, including light‐sensitive devices, acoustic devices, gas sensors, biomolecules and wearable devices. Similar to the reflex action of humans, graphene‐based film also exhibits reflex when under thermal radiation and light actuation. Finally, the current challenges associated with human‐like applications are discussed to help guide the future research on graphene films. At last, the future opportunities lie in the new applicable human‐like senses and the integration of multiple senses that can raise a revolution in bionic devices.

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Section: Properties and Preparationmentioning

confidence: 99%

Human‐Like Sensing and Reflexes of Graphene‐Based Films

et al. 2016

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“…Based on the mechanism of precipitation growth, it is feasible to control graphene layers by varying the proportion of Cu and Ni in catalyst [15,[20][21][22]. Figure 1a shows the schematic of Ni-Cu catalyst fabrication by laser cladding.…”

Section: Ni-cu Alloy With Specific Compositionmentioning

confidence: 99%

“…For now, the following metals have been used as growth catalysts, i.e., Ru, Ir, Co, Re, Ni, Cu, Pt, Pd [20][21][22][23][24]. Among them, Ni and Cu are the most widely-used metals.…”

Section: Introductionmentioning

confidence: 99%

“…They found that increasing the atomic percentage of Cu in Ni-Cu alloy tended to segregate thinner uniform graphene. Dai, et al [21] used a Ni-Mo alloy to suppress the carbon precipitation and activates a self-limited growth for homogeneous monolayer graphene. A similar work by Weatherup et al [22] reported that Au-Ni alloy was prepared for the large single crystal growth.…”

Section: Introductionmentioning

confidence: 99%

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Laser Controllable Growth of Graphene via Ni-Cu Alloy Composition Modulation

Lin

Zhang

et al. 2015

Lasers Manuf. Mater. Process.

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Graphene has many unique properties, most of them strongly depend on the number of layers. It is significant to develop a facile approach to realize the controllable growth of graphene with specific number of layers. We ever reported an efficient approach to grow graphene rapidly and locally by laser irradiation. In this work, we offers yet another important feature, to control the number of layers of graphene. Ni-Cu alloy has been reported to be used successfully as the catalyst for graphene growth with controllable number of layers. In that case, the Ni-Cu alloys with different compositions were normally formed by thermal evaporation. Here we provide an efficient way to fabricate the Ni-Cu alloy catalysts by laser cladding. Then the high power laser was employed to melt the Ni and Cu mixed powders. Different Ni-Cu alloy catalysts were formed in a high rate of 720 mm 2 /min with a thickness of 1.2 mm. Then the graphene with controllable layers was rapidly and locally grown on the Ni-Cu catalysts by laser irradiation at a high rate (18 cm 2 /min) at room temperature. We found that the Ni-Cu catalyst with 15 % Cu could be helpful to grow single layer graphene, which occupied 92.4 % of the entire film. Higher Cu content didn't promote the growth due to the oxygen involved during the growth process. The controllable growth mechanism of graphene by laser processing was discussed. Combining the rapid catalyst fabrication and graphene synthesis make it a cost-and time-efficient method to produce the controllable graphene films.

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“…63 The alloy was prepared by deposition on Ni Graphene formation proceeds via a surface catalysed process rather than from carbon segregation as carbon dissolved in the bulk is 'trapped' as molybdenum carbide.…”

Section: Nickel -Molybdenum Alloymentioning

confidence: 99%

Graphene Film Growth on Polycrystalline Metals

2012

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Rational design of a binary metal alloy for chemical vapour deposition growth of uniform single-layer graphene

Cited by 237 publications

References 27 publications

Human‐Like Sensing and Reflexes of Graphene‐Based Films

Human‐Like Sensing and Reflexes of Graphene‐Based Films

Laser Controllable Growth of Graphene via Ni-Cu Alloy Composition Modulation

Graphene Film Growth on Polycrystalline Metals

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