Conformal metal crack detection sensor based on flexible graphene film antenna

Tong, Cong; Song, Rongguo; Guan, Huijuan; Yang, Yingping; He, Daping

doi:10.1002/mmce.23172

Cited by 9 publications

(3 citation statements)

References 33 publications

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“…Motivated by this, GAF flexible electronics are successfully validated and applied in wearable devices and sensors. − Wearable electronics are a crucial part of flexible electronics and are indispensable for body area networks and intelligent communication. A low-profile circularly polarized wearable antenna based on GAF operating at 5.8 GHz is investigated .…”

Section: Rf and Microwave Electronics Based On Graphene Assembled Filmmentioning

confidence: 99%

Graphene Assembled Films for Radio Frequency and Microwave Technology

Song,

Zhang,

et al. 2024

Acc. Mater. Res.

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Metrics & MoreArticle Recommendations CONSPECTUS:With the rapid advancement of information technology, an era of intelligence where seamless interconnectivity prevails is coming. The Internet of Everything (IoE) relies on efficient data transmission, wherein radio frequency (RF) and microwave technologies play a pivotal role. RF and microwave technologies spawn extensive applications in mobile communication, radar systems, remote sensing, and other fields. Traditional conductive materials in RF and microwave electronics include copper, gold, and other metals. However, conventional metal-based electronics are constrained by inherent challenges such as susceptibility to oxidation, high density, restricted heat dissipation capacity, and insustainability, thereby impeding their ability to fulfill the requirements of next-generation RF and microwave electronics. Graphene assembled films emerge as a promising class of carbon materials with excellent electrical and thermal conductivity alongside remarkable mechanical stability, chemical inertness, and low density, which are highly suitable for utilization in RF and microwave electronics applications. RF and microwave electronics based on a graphene assembled film exhibit comparable electrical performance to the metallic materials while offering additional advantages such as lightweight, flexibility, corrosion resistance, enhanced heat dissipation efficiency, and fatigue resistance. These distinguished properties enable electronics to adapt to intelligent environments with high integration levels. Therefore, the application of the graphene assembled film has significantly advanced the progress in RF and microwave technology, facilitating metal-substitution.In this Account, we primarily summarize our efforts toward developing the utilization of graphene assembled film (GAF) within the realm of electronics in RF and microwave technology. Through material optimization, device design, and processing technology iteration, we have successfully implemented GAF electronics in wireless communication, wearable systems, electromagnetic protection, and the intelligent control of electromagnetic waves in RF and microwave technology. First, we introduce the advanced properties of graphene and present an overview of the fabrication methods for GAF, including coating, vacuum filtration, and graphene oxide film reducing, highlighting exceptional electrical, mechanical, and thermal properties of GAF, as well as the feasibility of metal substitution. Subsequently, we extensively discuss the application of GAF in radio frequency and microwave technology from various perspectives, encompassing antenna and antenna arrays, flexible electronics, radio frequency identification (RFID) devices, and metasurfaces. GAF-based electronics not only inherit the exceptional lightweight, flexible, corrosion resistance, and fatigue resistance characteristics of GAF but also exhibit superior electrical properties, such as low radiation sidelobe and wide working bandwidth, surpassing the conventional metal-ba...

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Section: Rf and Microwave Electronics Based On Graphene Assembled Filmmentioning

confidence: 99%

Graphene Assembled Films for Radio Frequency and Microwave Technology

Song,

Zhang,

et al. 2024

Acc. Mater. Res.

Self Cite

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“…Metal materials are prone to oxidation and erosion, making it difficult to operate stably in harsh environments for a long time owing to their poor corrosion resistance. In addition, the poor flexibility of metals makes it difficult to measure curved structures [32]. These issues significantly limit the application scenarios of metal-based antenna sensors.…”

Section: Introductionmentioning

confidence: 99%

Bidirectional large strain monitoring using a novel graphene film-based patch antenna sensor

Weng,

Peng,

Gao

et al. 2024

Smart Mater. Struct.

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This study proposes a rectangular microstrip patch antenna sensor based on a high-conductivity graphene film for bidirectional strain detection in structural health monitoring (SHM). By using a highly conductive graphene film instead of traditional metal foil to produce a patch antenna, the antenna possesses a higher flexibility and a larger sensing range. The mechanical, electromagnetic, and radiative properties were investigated. The strain sensing principle based on the resonant frequency offset of the graphene film antenna was proposed. The relationships between the resonant frequency shift and structural strain were quantitatively explored through theoretical deductions, finite element simulations, and experiments. According to the experimental results, the shift in the resonant frequency was linearly related to the lateral and longitudinal strains. The sensitivity coefficients for the lateral and longitudinal strains were 2.2037 kHz/με and 3.6198 kHz/με, respectively. The thermal strain can be distinguished based on the linear resonant frequency-temperature relationship. The results demonstrated the advantages and prospects of the proposed novel patch antenna for SHM.

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“…[18][19][20] Meanwhile, in our previous work, a GAF-based conformal rectangular patch antenna sensor was proposed to detect cracks on curved metal surfaces with a sensitivity of 36.82 MHz mm −1 , which is sufficient for millimeter cracks. 21) For the submillimeter cracks, the detection sensitivity needs to be further improved.…”

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confidence: 99%

Graphene assembled film based conformal sensor array for submillimeter crack location and direction detection

Guan¹,

Song²,

Tong³

et al. 2023

Appl. Phys. Express

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In this paper, a conformal CSRR derived sensor array with two resonant frequency based on graphene assembled film (GAF) is proposed to detect and determine the direction of submillimeter cracks on aluminum plates. The GAF sensor array consists of a microstrip line, a dielectric substrate and a reference ground with two CSRR derived resonant structure. The GAF sensor array has a high sensitivity of 270 MHz for the curved aluminum plate with a crack width of 0.2 mm. In addition, the CSRR derived resonant structure array of GAF sensor is effectively detect the direction of crack.

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Conformal metal crack detection sensor based on flexible graphene film antenna

Cited by 9 publications

References 33 publications

Graphene Assembled Films for Radio Frequency and Microwave Technology

Graphene Assembled Films for Radio Frequency and Microwave Technology

Bidirectional large strain monitoring using a novel graphene film-based patch antenna sensor

Graphene assembled film based conformal sensor array for submillimeter crack location and direction detection

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