Flexible Pressure Sensors with a Sandwich Structure Based on Vertical Graphene Nanowalls by HFCVD

Mao, Weibiao; Shen, Honglie; Wang, Zehui; Liao, Bingjie; Zhang, Jingzhe; Zhu, Junkui; Li, Yufang; Wu, Tianru

doi:10.1007/s11664-022-10101-2

Cited by 5 publications

(4 citation statements)

References 40 publications

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“…The sensor’s impressive performance in detecting nitrogen dioxide arises from the charge transfer differences and varying electron affinities, offering new avenues for gas sensor applications involving CNWs. In another exciting development, Mao et al [ 5 ] harnessed the power of vertical graphene nanowalls (VGNs) to create flexible pressure sensors. VGNs, prepared using HF-CVD, possess outstanding electrical conductivity and specific surface area.…”

Section: Applications Of Vgnwsmentioning

confidence: 99%

“…The landscape of graphene research has been significantly enriched by a diverse range of methodologies employed for growth and analysis, leading to an enhanced comprehension of CNWs’ synthesis and unique carbon nanostructures. Various techniques—including chemical vapor deposition (CVD) growth, hot filament CVD (HFCVD) [ 5 ], direct current (DC) arc discharge evaporation [ 6 ], PECVD, and other techniques evolved from it such as inductively-coupled PECVD (ICP-CVD) [ 7 , 8 ], remote PECVD (RPECVD) [ 7 ], plasma-enhanced atomic layer deposition (PEALD) [ 9 ], or other more specific like high-voltage nanosecond pulses for radical injection (RI)-PECVD [ 10 ]—have been effectively utilized with varying parameters, yielding distinct morphologies and properties. Crucially, characterization techniques such as scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS) have played pivotal roles in offering essential insights into the structural and property characteristics of various carbon nanostructures.…”

Section: Introductionmentioning

confidence: 99%

“…In regard to VGNWS applications, we have selected the most recent advances in the most interesting areas today, such as, photocatalysis [ 17 , 18 ], electrocatalyst for highly efficient hydrogen evolution reaction (HER) [ 19 , 20 , 21 ], rechargeable battery technology [ 22 , 23 , 24 ], supercapacitor technology [ 7 , 25 , 26 , 27 , 28 , 29 , 30 ], hydrovoltaic power generation [ 31 ], solar energy conversion [ 32 , 33 , 34 , 35 ], efficient thermal interfaces [ 36 , 37 , 38 , 39 ], field emission [ 40 ], IR detectors [ 41 ], and gas sensing [ 5 , 42 , 43 ].…”

Section: Introductionmentioning

confidence: 99%

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Advancements in Plasma-Enhanced Chemical Vapor Deposition for Producing Vertical Graphene Nanowalls

Bertran-Serra,

Rodriguez-Miguel,

et al. 2023

Nanomaterials

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In recent years, vertical graphene nanowalls (VGNWs) have gained significant attention due to their exceptional properties, including their high specific surface area, excellent electrical conductivity, scalability, and compatibility with transition metal compounds. These attributes position VGNWs as a compelling choice for various applications, such as energy storage, catalysis, and sensing, driving interest in their integration into next-generation commercial graphene-based devices. Among the diverse graphene synthesis methods, plasma-enhanced chemical vapor deposition (PECVD) stands out for its ability to create large-scale graphene films and VGNWs on diverse substrates. However, despite progress in optimizing the growth conditions to achieve micrometer-sized graphene nanowalls, a comprehensive understanding of the underlying physicochemical mechanisms that govern nanostructure formation remains elusive. Specifically, a deeper exploration of nanometric-level phenomena like nucleation, carbon precursor adsorption, and adatom surface diffusion is crucial for gaining precise control over the growth process. Hydrogen’s dual role as a co-catalyst and etchant in VGNW growth requires further investigation. This review aims to fill the knowledge gaps by investigating VGNW nucleation and growth using PECVD, with a focus on the impact of the temperature on the growth ratio and nucleation density across a broad temperature range. By providing insights into the PECVD process, this review aims to optimize the growth conditions for tailoring VGNW properties, facilitating applications in the fields of energy storage, catalysis, and sensing.

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Section: Applications Of Vgnwsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Advancements in Plasma-Enhanced Chemical Vapor Deposition for Producing Vertical Graphene Nanowalls

Bertran-Serra,

Rodriguez-Miguel,

et al. 2023

Nanomaterials

View full text Add to dashboard Cite

show abstract

“…The landscape of graphene research has been significantly enriched by a diverse range of methodologies employed for growth and analysis, leading to an enhanced comprehension of CNWs' synthesis and unique carbon nanostructures. Various techniques-including chemical vapor deposition (CVD) growth, hot filament CVD (HFCVD) [5], direct current (DC) arc discharge evaporation [6], PECVD, and other techniques evolved from it such as inductively-coupled PECVD (ICP-CVD) [7,8], remote PECVD (RPECVD) [7], plasmaenhanced atomic layer deposition (PEALD) [9], or other more specific like high-voltage nanosecond pulses for radical injection (RI)-PECVD [10]-have been effectively utilized with varying parameters, yielding distinct morphologies and properties. Crucially, characterization techniques such as scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS) have played pivotal roles in offering essential insights into the structural and property characteristics of various carbon nanostructures.…”

Section: Introductionmentioning

confidence: 99%

Advancements in Plasma-Enhanced Chemical Vapor Deposition for Producing Vertical Graphene Nanowalls

Bertran-Serra,

Rodriguez-Miguel,

et al. 2023

Preprint

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Vertical graphene nanowalls (VGNWs) have emerged as a highly promising material in recent years due to their exceptional properties, such as a high specific surface area, excellent electrical conductivity, scalability, and compatibility with transition metal compounds. These attributes make VGNWs a compelling candidate for various applications, including energy storage, catalysis, and sensing, fostering great interest in their use in next future commercial graphene-based sensors like optoelectronic and plasmonic devices, energy storage electrodes, and catalytic systems. Among the diverse graphene synthesis methods, plasma-enhanced chemical vapor deposition (PECVD) has proven to be a robust technique for producing large-scale graphene films and creating VGNWs on diverse substrates. However, despite substantial progress in optimizing growth conditions to achieve micrometer-sized graphene nanowalls, the outcomes are often obtained through empirical approaches, and a comprehensive understanding of the underlying physicochemical mechanisms governing nanostructure formation remains elusive. In particular, a deeper exploration of atomic-level phenomena, such as nucleation, carbon precursor adsorption, and surface diffusion of adatoms, is imperative to exert precise control over the growth process. Concerning the synthesis of VGNWs, hydrogen plays a dual role in the graphene growth process, acting as both a co-catalyst and an etchant for the nanowalls. Nevertheless, a thorough comprehension of the intricate growth process is still required. To address these knowledge gaps, this review paper aims to investigate the nucleation and growth of VGNWs using PECVD, with a specific focus on exploring the temperature effect on the graphene growth ratio and nucleation density across a wide range of temperatures. By providing valuable insights into the PECVD process, our objective is to enable the optimization of growth conditions for tailoring VGNWs' properties, thereby facilitating their application in energy storage, catalysis, and sensing fields.

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Rational design of redox active amorphous Ni-Mn phosphate anchored on vertical graphene nanohills (VGNHs) for solid-state energy storage device

Katkar,

Kadam,

Jerng

et al. 2023

Journal of Alloys and Compounds

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Flexible Pressure Sensors with a Sandwich Structure Based on Vertical Graphene Nanowalls by HFCVD

Cited by 5 publications

References 40 publications

Advancements in Plasma-Enhanced Chemical Vapor Deposition for Producing Vertical Graphene Nanowalls

Advancements in Plasma-Enhanced Chemical Vapor Deposition for Producing Vertical Graphene Nanowalls

Advancements in Plasma-Enhanced Chemical Vapor Deposition for Producing Vertical Graphene Nanowalls

Rational design of redox active amorphous Ni-Mn phosphate anchored on vertical graphene nanohills (VGNHs) for solid-state energy storage device

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