Three-dimensional printing of a tunable graphene-based elastomer for strain sensors with ultrahigh sensitivity

Huang, Kai; Dong, Shaoming; Yang, Jinshan; Yan, Jun; Xue, Yudong; You, Xiao; Hu, Jianbao; Gao, Le; Zhang, Xiangyu; Ding, Yusheng

doi:10.1016/j.carbon.2018.11.008

Cited by 112 publications

(77 citation statements)

References 73 publications

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“…Most composite strain sensors have an increase in electrical resistance with increasing tensile strain due to the increase in tunneling distance [ 173,205,206 ] and crack propagation. [ 43,207,208 ] However, these composites are more resistive with higher train or deformation, leading to the limited range of sensing capability and other undesirable characteristics. Therefore, recent research focuses on the development of liquid metal nanocomposites that have negative piezoresistance.…”

Section: Materials For Stretchable Mechanical Sensorsmentioning

confidence: 99%

Advances in Rational Design and Materials of High‐Performance Stretchable Electromechanical Sensors

Dinh

Nguyen

Phan

et al. 2020

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curved surfaces and deformed objects. [5,6] An effective solution is using stretchable intrinsic materials and stretchable structural designs to form mechanical sensors. [7,8] Compared to conventional rigid sensors, it is desirable for stretchable sensors to provide mechanical robustness, biocomparability, multifunctionality, as well as comfort of wearing such sensors. [9,10] Stretchable electromechanical sensors are capable of being comfortably attached on the human body and skin and perceiving mechanical stimuli. These sensors have huge potential applications in personal healthcare, including detection of human motion/gesture, breath, and pulse monitoring. Stretchable electromechanical sensors have recently attracted great interest due to their high sensitivity, stretchability, simplicity in design, and implementation. Compared with the other kinds of sensors, for example, stretchable piezoelectric/triboelectric sensors, electromechanical sensors usually require supply power or battery.A stretchable sensor typically consists of a sensing block embedded or integrated into a stretchable substrate that can be elongated under application of mechanical stimuli. [11,12] The sensing block acts as a mechanical sensing unit, which for instance converts stress/strain into a measurable electrical signal. The presence of nanomaterials and composites in the sensing block has been utilized as a preferable design for stretchable sensors. [11,13] Selection criteria of these materials include structural stretchability, suitable conductivity, and high mechanical strength. Designing the sensing structure aims for high sensitivity, fast response, linearity, and a wide working range. [14,15] The integration of nanomaterials and nanocomposites into stretchable sensors are currently an emerging trend of wearable sensors in their research, development, and commercialization. [10,11] The development of stretchable sensors with low power consumption for portable applications is also of great interest. [16,17] The conventional design method for "partly stretchable" sensing devices integrates "hard" sensors and "soft" interconnects to form "island-interconnect" configurations. [18,19] This approach deploys an isolated island to carry the rigid sensors and a stretchable network of interconnections. Geometric engineering structures including serpentine and fractal designs have been widely employed, to achieve stretchability Stretchable and wearable sensor technology has attracted significant interests and created high technological impact on portable healthcare and smart human-machine interfaces. Wearable electromechanical systems are an important part of this technology that has recently witnessed tremendous progress toward high-performance devices for commercialization. Over the past few years, great attention has been paid to simultaneously enhance the sensitivity and stretchability of the electromechanical sensors toward high sensitivity, ultra-stretchability, low power consumption or selfpower functionalities, miniaturisation as well a...

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Section: Materials For Stretchable Mechanical Sensorsmentioning

confidence: 99%

Advances in Rational Design and Materials of High‐Performance Stretchable Electromechanical Sensors

Dinh

Nguyen

Phan

et al. 2020

Small

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“…Graphene sheets were diffused in the combination of ethylene glycol butyl ether and dibutyl phthalate, which were mixed with PDMS to obtain homogenous inks, and the 1:5 mass ratio of graphene to PDMS is preferable for extrusion. [ 71 ] Strain sensors were constructed through multidirectional layer stacking of filaments after printing the inks with parallel multi‐zigzag patterns, GF reached 448 at the compressive strain of 30%. The signals output tends to be constant within 100 cycles under 30% strain, presenting the stability of the sensor.…”

Section: Progress On 3d Printed Strain Sensorsmentioning

confidence: 99%

3D Printed Flexible Strain Sensors: From Printing to Devices and Signals

et al. 2021

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The revolutionary and pioneering advancements of flexible electronics provide the boundless potential to become one of the leading trends in the exploitation of wearable devices and electronic skin. Working as substantial intermediates for the collection of external mechanical signals, flexible strain sensors that get intensive attention are regarded as indispensable components in flexible integrated electronic systems. Compared with conventional preparation methods including complicated lithography and transfer printing, 3D printing technology is utilized to manufacture various flexible strain sensors owing to the low processing cost, superior fabrication accuracy, and satisfactory production efficiency. Herein, up-to-date flexible strain sensors fabricated via 3D printing are highlighted, focusing on different printing methods based on photocuring and materials extrusion, including Digital Light Processing (DLP), fused deposition modeling (FDM), and direct ink writing (DIW). Sensing mechanisms of 3D printed strain sensors are also discussed. Furthermore, the existing bottlenecks and future prospects are provided for further progressing research.

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“…In this case, the flexural modulus and fracture toughness were improved by 14 % and 28 %, respectively, compared to the neat resin. Huang et al [178] incorporated graphene into polydimethylsiloxane (PDMS) to a produce tunable and highly sensitive strain sensors via DIW with a large gauge factor (up to 448 at 30% strain) and durability (100 compress-release cycles under 10% strain). [28,86,96,106,107,115,120,122,167].…”

Section: Mechanical Properties and Strain Sensor Applicationmentioning

confidence: 99%

Additive manufacturing high performance graphene-based composites: A review

Feng

Huang

et al. 2019

Composites Part A: Applied Science and Manufacturing

131

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Three-dimensional printing of a tunable graphene-based elastomer for strain sensors with ultrahigh sensitivity

Cited by 112 publications

References 73 publications

Advances in Rational Design and Materials of High‐Performance Stretchable Electromechanical Sensors

Advances in Rational Design and Materials of High‐Performance Stretchable Electromechanical Sensors

3D Printed Flexible Strain Sensors: From Printing to Devices and Signals

Additive manufacturing high performance graphene-based composites: A review

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