Ultra-broadband frequency responsive sensor based on lightweight and flexible carbon nanostructured polymeric nanocomposites

Zeng, Zhihui; Liu, Menglong; Xu, Hao; Liao, Yaozhong; Duan, Feng; Zhou, Li; Jin, Hao; Zhang, Zhong; Su, Zhongqing

doi:10.1016/j.carbon.2017.06.011

Cited by 49 publications

(41 citation statements)

References 48 publications

(84 reference statements)

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“…Nanoparticles which are dispersed in polymer matrices as reinforcement elements have now found their superb niches to functionalize conventional composites with new capabilities, as typified by electro-static discharge [ 1 ], electromagnetic interference shield [ 2 ], gas leakage sensing [ 3 ], UV-absorbing [ 4 ], flame-retardant coating [ 5 ] and damage detection [ 6 , 7 ], to name a few. In particular, the self-sensing using embedded nanoparticles has gained prominence in recent development of composites, to accommodate the increased desire from industry to acquire structural parameters and ambient information, not at the cost of introducing excessive weight and volume penalty to original composites due to the use of additional sensing systems—a paramount factor to be particularly considered for developing and implementing structural health monitoring (SHM) approaches in aerospace applications.…”

Section: Introductionmentioning

confidence: 99%

Dispersed Sensing Networks in Nano-Engineered Polymer Composites: From Static Strain Measurement to Ultrasonic Wave Acquisition

Wang

2018

Sensors

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Self-sensing capability of composite materials has been the core of intensive research over the years and particularly boosted up by the recent quantum leap in nanotechnology. The capacity of most existing self-sensing approaches is restricted to static strains or low-frequency structural vibration. In this study, a new breed of functionalized epoxy-based composites is developed and fabricated, with a graphene nanoparticle-enriched, dispersed sensing network, whereby to self-perceive broadband elastic disturbance from static strains, through low-frequency vibration to guided waves in an ultrasonic regime. Owing to the dispersed and networked sensing capability, signals can be captured at any desired part of the composites. Experimental validation has demonstrated that the functionalized composites can self-sense strains, outperforming conventional metal foil strain sensors with a significantly enhanced gauge factor and a much broader response bandwidth. Precise and fast self-response of the composites to broadband ultrasonic signals (up to 440 kHz) has revealed that the composite structure itself can serve as ultrasound sensors, comparable to piezoceramic sensors in performance, whereas avoiding the use of bulky cables and wires as used in a piezoceramic sensor network. This study has spotlighted promising potentials of the developed approach to functionalize conventional composites with a self-sensing capability of high-sensitivity yet minimized intrusion to original structures.

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Section: Introductionmentioning

confidence: 99%

Dispersed Sensing Networks in Nano-Engineered Polymer Composites: From Static Strain Measurement to Ultrasonic Wave Acquisition

Wang

2018

Sensors

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“…[ 16–19 ] It has been shown on many occasions that carbon nanocomposite sensors can be highly sensitive to ultrasonic waves, capable of responding to dynamic strains down to the microscale with frequencies up to hundreds of kilohertz. [ 20 ] Also, it is believed that for sensing strains in the ultrasonic regime, the quantum tunneling effect plays the dominant role in determining the piezoresistive responses of the sensors. [ 21 ]…”

Section: Introductionmentioning

confidence: 99%

On a Highly Reproducible, Broadband Nanocomposite Ultrasonic Film Sensor Fabricated by Ultrasonic Atomization‐Assisted Spray Coating

et al. 2020

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In the last couple of decades, attaching sensors permanently onto in-service engineering structures has been a key strategy for conducting in situ structural integrity assessments. [1-4] In this respect, a wide range of sensors, which include but are not limited to optical fibers, [5,6] piezoelectric transducers, [7-9] electromagnetic acoustic transducers, [10,11] and polyvinylidene fluoride film sensors, [12,13] have been used in practice. However, the existing technologies suffer from various limitations, which include narrow frequency bandwidth, redundant volume and mass, high cost, and stringent requirements on coupling. In pursuit for improved sensing systems, sensors that are lightweight, flexible, cost effective, convenient to fabricate, and sensitive over a broad frequency range have attracted much R&D effort. Carbon nanoparticle-based composite materials, which emerged from recent research, have demonstrated the potential for satisfying the demands of modern sensing systems. The nanostructures of these materials are piezoresistive, such that the overall electrical resistance of a material varies with mechanical deformations. This is mainly attributed to 1) the inherent piezoresistivity of the nanofillers in the material, and changes in 2) the macroscopic resistances and 3) the quantum tunneling resistances between adjacent nanofillers when the distances between the nanofillers change with mechanical deformations. The latter phenomenon is known as the quantum tunneling effect. Wearable strain sensors that are fabricated from carbon nanocomposite materials [14-16] exhibit abundant merits, which include negligible weight, high physical flexibility, remarkable manufacturability, and outstanding sensitivity to microscopic deformations. These attractive features also render carbon nanocomposite materials promising candidates for sensors that are used to monitor conditions of engineering structures. [16-19] It has been shown on many occasions that carbon nanocomposite sensors can be highly sensitive to ultrasonic waves, capable of responding to dynamic strains down to the microscale with frequencies up to hundreds of kilohertz. [20] Also, it is believed that for sensing strains in the ultrasonic regime, the quantum tunneling effect plays the dominant role in determining the piezoresistive responses of the sensors. [21] Nanocomposite ultrasonic sensors are mainly fabricated from three different types of carbon nanofillers, namely, carbon black

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“…Mechanical stretching [6] and high-electric-field poling [7][8][9][10] are critical for the immobilization of the polar phase. Recent approaches have aimed at obtaining the β-phase of PVDF through electrospinning and incorporating PVDF with nanoparticles [11][12][13]. Electrospinning is a manufacturing technique which can be used to extract continuous nanofibers with several favorable characteristics such as a low diameter, high specific surface area, flexibility in surface functionality, and high porosity [14][15][16].…”

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confidence: 99%

Acoustic–electric conversion and piezoelectric properties of electrospun polyvinylidene fluoride/silver nanofibrous membranes

Wu¹,

Chou²

2020

Express Polym. Lett.

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Ultra-broadband frequency responsive sensor based on lightweight and flexible carbon nanostructured polymeric nanocomposites

Cited by 49 publications

References 48 publications

Dispersed Sensing Networks in Nano-Engineered Polymer Composites: From Static Strain Measurement to Ultrasonic Wave Acquisition

Dispersed Sensing Networks in Nano-Engineered Polymer Composites: From Static Strain Measurement to Ultrasonic Wave Acquisition

On a Highly Reproducible, Broadband Nanocomposite Ultrasonic Film Sensor Fabricated by Ultrasonic Atomization‐Assisted Spray Coating

Acoustic–electric conversion and piezoelectric properties of electrospun polyvinylidene fluoride/silver nanofibrous membranes

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