Strain sensing behaviour of elastomeric composite films containing carbon nanotubes under cyclic loading

Zhang, Rui; Deng, Hua; Valenca, Renata; Li, Guang; Fu, Qiang; Bilotti, Emiliano; Peijs, Ton

doi:10.1016/j.compscitech.2012.09.016

Cited by 223 publications

(154 citation statements)

References 53 publications

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“…[ 10,83 ] Large hysteresis behavior of the CNT-polymer nanocomposite strain sensors can be explained by our proposed model since several researchers have pointed the weak interfacial binding between CNTs and polymers. [ 14,34,42,52,53,62,100,116 ] These studies highlight the importance of polymer materials and their interaction with sensing thin fi lms in stretchable sensors for high performance strain sensing.…”

Section: Hysteresismentioning

confidence: 98%

“…Strong interfacial binding between elastic nanomaterials (e.g., CNT and graphene) and polymers would give better strain sensing performances. [ 46,62,77,116 ] When the binding is weak, elastic nanomaterials can slide inside the polymer matrices upon high stretching while they cannot rapidly slide back to their original positions after complete release of strain, resulting in high hysteresis behavior. [ 46 ] On the contrary, very weak interfacial adhesion between rigid nanomaterials (e.g., metal NWs) and polymers is demanded for the full recovery of the nanomaterials to their initial positions upon releasing.…”

Section: Hysteresismentioning

confidence: 99%

See 1 more Smart Citation

Stretchable, Skin‐Mountable, and Wearable Strain Sensors and Their Potential Applications: A Review

Amjadi

Kyung

Park

et al. 2016

Adv Funct Materials

2,629

2,129

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wileyonlinelibrary.comSkin-mountable and wearable sensors can be attached onto the clothing or even directly mounted on the human skin for the real-time monitoring of human activities. [ 10 ] Besides their high effi ciency, they must fulfi ll several minimum requirements including high stretchability, fl exibility, durability, low power consumption, biocompatibility, and lightweight. These demands become even more severe for epidermal electronic devices where mechanical compliance like human skin and high stretchability ( ε > 100% where ε is the strain) are required. [ 11,12 ] Recently, several types of skin-mountable and wearable sensors have been proposed by using nanomaterials coupled with fl exible and stretchable polymers. Indeed, nanomaterials are utilized as functional sensing elements owing to their outstanding electrical, mechanical, optical, and chemical properties while polymers are employed as fl exible support materials thanks to their fl exibility, stretchability, humanfriendliness, and durability. [ 13 ] Examples of those innovative sensors include strain sensors, [ 10,[12][13][14] pressure sensors, [ 5,[15][16][17] electronic skins (e-skins), [ 3,[16][17][18][19][20] and temperature sensors. [ 2,21,22 ] Particularly, various skin-mountable and wearable strain sensors have been developed because of their broad applications in personalized heath-monitoring, human motion detection, human-machine interfaces, and soft robotics. [ 10,12,[23][24][25][26][27][28][29][30][31] This paper aims to survey fabrication processes, working mechanisms, strain sensing performances, and applications of stretchable strain sensors. The article is organized as follows: fi rst, common operation mechanisms of stretchable strain sensors are described. Here, we summarize novel functional nanomaterials and techniques for the fabrication of stretchable strain sensors in details. Second, mechanisms involved in the strain-responsive behavior of resistive-type and capacitive-type sensors are explained. We show that the infl uence of traditional mechanisms like geometrical changes and piezoresistivity of materials on the strain sensing performance of fl exible strain sensors are very small whereas mechanisms such as disconnection between sensing elements, crack propagation in thin fi lms, and tunneling effect can potentially be employed for highly stretchable and sensitive strain sensing. Third, we emphasize the performance parameters of stretchable strain sensors in terms of stretchability, sensitivity, linearity, hysteresis behavior, response time, overshooting, and durability. We demonstrate

show abstract

Section: Hysteresismentioning

confidence: 98%

Section: Hysteresismentioning

confidence: 99%

Stretchable, Skin‐Mountable, and Wearable Strain Sensors and Their Potential Applications: A Review

Amjadi

Kyung

Park

et al. 2016

Adv Funct Materials

2,629

2,129

View full text Add to dashboard Cite

show abstract

“…1,[63][64][65] In addition, the current-voltage (I-V) characteristics of porous graphene/TPU foam in the fiftieth cycle under the strain of 90% were also studied ( Fig. 10(e)).…”

Section: Piezoresistive Behavior Of Porous Graphene/tpu Foamsmentioning

confidence: 99%

Lightweight conductive graphene/thermoplastic polyurethane foams with ultrahigh compressibility for piezoresistive sensing

et al. 2017

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“…Figure 6 The bonding between polymer chains and filler particles is best revealed from the cyclic straining studies of the composites. Generally, during the first ten cycles, the resistance drops to lower values which then tend to stabilize (16,18). Hence the reversibility of the change in electrical resistance at elongation was tested under continuous cycles up to 20% for 20 cycles.…”

Section: For Tpu/pani/fmwcnt(e) and For Fmwcnt/tpu The Increase In Rementioning

confidence: 99%

“…Zhang et al (16) reported the resistivity response under cyclic loading of thermoplastic polyurethane (TPU)/MWNT elastomeric nanocomposite films fabricated by a solution process with good nanotube dispersion and low percolation threshold (0.35 weight%). At 5% strain, the strain-dependent resistance showed good recoverability and reproducibility, but when larger strains were applied, only a small part of the resistance was recoverable.…”

Section: Introductionmentioning

confidence: 99%

Improved strain sensing property of functionalised multiwalled carbon nanotube/polyaniline composites in TPU matrix

Sobha

Narayanankutty

2015

Sensors and Actuators A: Physical

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Strain sensing behaviour of elastomeric composite films containing carbon nanotubes under cyclic loading

Cited by 223 publications

References 53 publications

Stretchable, Skin‐Mountable, and Wearable Strain Sensors and Their Potential Applications: A Review

Stretchable, Skin‐Mountable, and Wearable Strain Sensors and Their Potential Applications: A Review

Lightweight conductive graphene/thermoplastic polyurethane foams with ultrahigh compressibility for piezoresistive sensing

Improved strain sensing property of functionalised multiwalled carbon nanotube/polyaniline composites in TPU matrix

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