An inkjet-printed, flexible, ultra-broadband nanocomposite film sensor for in-situ acquisition of high-frequency dynamic strains

Zhou, Pengyu; Liao, Yaozhong; Li, Yehai; Pan, Dongyue; Cao, Wenwu; Yang, Xiling; Zou, Fangxin; Zhou, Limin; Zhang, Zhong; Su, Zhongqing

doi:10.1016/j.compositesa.2019.105554

Cited by 35 publications

(19 citation statements)

References 59 publications

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“…Some authors [31] have explored this similarity, demonstrating that sensors made from carbon black/Polyvinylpyrrolidone (CB/PVP) nanocomposite ink also work under the principle of conductivity, based on tunneling current among conductive particles. They demonstrated that these sensors, working at frequencies as high as 400 kHz, are able to detect the subtle strain changes associated with elastic waves, a task normally reserved for piezoelectric wafers.…”

Section: Discussionmentioning

confidence: 99%

Directional Response of Randomly Dispersed Carbon Nanotube Strain Sensors

Güemes

Morales

Fernández-López

et al. 2020

Sensors

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Tests on a double lap bonded joint, with transverse strips of randomly oriented carbon nanotubes (CNT) sprayed onto an epoxy adhesive film, showed a positive increment in electrical resistance under tensile load, even though the transverse strains were negative. Other experiments included in this work involved placing longitudinal and transversal CNT sensors in a tensile loaded aluminum plate, and, as reported by other authors, the results confirm that the resistance change is not only dependent on the strains oriented with the electrode line, while the other strain components also influence the response. This behavior is quite different to that of conventional strain gages which have a near zero sensitivity to strains not aligned to the sensor direction. The dependence of the electrical response on all the strain components makes it quite difficult, possibly unfeasible, to experimentally determine the individual strain components with this kind of sensors; however, the manufacturing of aligned CNT sensors could deal with this issue.

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Section: Discussionmentioning

confidence: 99%

Directional Response of Randomly Dispersed Carbon Nanotube Strain Sensors

Güemes

Morales

Fernández-López

et al. 2020

Sensors

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“…CB with an average particle diameter of 30 nm (Black Pearl 2000, Cabot Corp., USA) was chosen as the nanofiller for the proposed nanocomposite ultrasonic sensor due to its reported high sensitivity to ultrasonic waves [ 22,24,25 ] and its relatively low aspect ratio and large specific surface area, which would assist its dispersion in spraying inks. Uniform dispersion of nanofillers would not only avoid clogging of spraying nozzles, allowing successful fabrication of sensors at various nanofiller contents, but would also lead to establishment of well‐structured quantum tunneling networks inside sensors, maximizing the responses of sensors to the high‐frequency microscopic strains that are generated by ultrasonic waves.…”

Section: Methodsmentioning

confidence: 99%

“…Recently, an inkjet-printed CB-based nanocomposite ultrasonic sensor was developed. [24] Although inkjet printing can be done at high precision, the fact that it is prone to clogging limits the types of nanofillers and the nanofiller contents that can be used, consequently restraining the maximum sensitivity that can be achieved by the sensor. Moreover, the cost of inkjet printing is relatively high.…”

Section: Doi: 101002/adem202000462mentioning

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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“…The authors prior to bending experiments applied a repetitive stress to the sensor film in order to create microcracks which greatly enhanced performance, because contact resistance between cracks changes depending on the crack gap, which in turn changes with different strain. A high-frequency dynamic strain sensor was recently developed using inkjet printing with a composite ink consisting of carbon black nanoparticles and polyvinyl pyrrolidone; the sensor was capable of detecting dynamic strains up to a frequency of 500 kHz [ 77 ] ( Figure 21 a–d). Wei et al [ 78 ] formed AgNW-layered double hydroxide (LDH) hybrid composites, which they patterned on paper substrate.…”

Section: Printed Strain—bending Sensorsmentioning

confidence: 99%

“… The printer ( a ) and ( b – d ) an inkjet-printed on Kapton piezoresistive dynamic strain sensor based on carbon black and polyvinyl pyrrolidone; (reproduced with permission from [ 77 ], copyright 2019, Elsevier); ( e ) an AgNW/LDH composite sensor for detection of different movements on human arm (reproduced with permission from [ 78 ] copyright 2015, American Chemical Society). …”

Section: Figurementioning

confidence: 99%

A Review on Humidity, Temperature and Strain Printed Sensors—Current Trends and Future Perspectives

Barmpakos

Kaltsas

2021

Sensors

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Printing technologies have been attracting increasing interest in the manufacture of electronic devices and sensors. They offer a unique set of advantages such as additive material deposition and low to no material waste, digitally-controlled design and printing, elimination of multiple steps for device manufacturing, wide material compatibility and large scale production to name but a few. Some of the most popular and interesting sensors are relative humidity, temperature and strain sensors. In that regard, this review analyzes the utilization and involvement of printing technologies for full or partial sensor manufacturing; production methods, material selection, sensing mechanisms and performance comparison are presented for each category, while grouping of sensor sub-categories is performed in all applicable cases. A key aim of this review is to provide a reference for sensor designers regarding all the aforementioned parameters, by highlighting strengths and weaknesses for different approaches in printed humidity, temperature and strain sensor manufacturing with printing technologies.

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An inkjet-printed, flexible, ultra-broadband nanocomposite film sensor for in-situ acquisition of high-frequency dynamic strains

Cited by 35 publications

References 59 publications

Directional Response of Randomly Dispersed Carbon Nanotube Strain Sensors

Directional Response of Randomly Dispersed Carbon Nanotube Strain Sensors

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

A Review on Humidity, Temperature and Strain Printed Sensors—Current Trends and Future Perspectives

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