Highly stretchable multi-walled carbon nanotube/thermoplastic polyurethane composite fibers for ultrasensitive, wearable strain sensors

Nanoscale ◽  
2019 ◽  
Vol 11 (13) ◽  
pp. 5884-5890 ◽  
Author(s):  
Zuoli He ◽  
Gengheng Zhou ◽  
Joon-Hyung Byun ◽  
Sang-Kwan Lee ◽  
Moon-Kwang Um ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Thermoplastic Polyurethane ◽  
Strain Sensor ◽  
Strain Sensors ◽  
Wet Spinning ◽  
Polyurethane Composite ◽  
Multi Walled Carbon Nanotube ◽  
Highly Sensitive ◽  
Spinning Process ◽  
Highly Stretchable

In this manuscript, we report a novel highly sensitive wearable strain sensor based on a highly stretchable multi-walled carbon nanotube (MWCNT)/Thermoplastic Polyurethane (TPU) fiber obtained via a wet spinning process.

Ultra-stretchable and highly sensitive strain sensor based on gradient structure carbon nanotubes

Nanoscale ◽  
2018 ◽  
Vol 10 (28) ◽  
pp. 13599-13606 ◽  
Author(s):  
Binghao Liang ◽  
Zhiqiang Lin ◽  
Wenjun Chen ◽  
Zhongfu He ◽  
Jing Zhong ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Strain Sensor ◽  
High Sensitivity ◽  
Strain Sensors ◽  
Sensitive Strain ◽  
Gauge Factor ◽  
Gradient Structure ◽  
Highly Sensitive ◽  
Highly Stretchable

A highly stretchable and sensitive strain sensor based on a gradient carbon nanotube was developed. The strain sensors show an unprecedented combination of both high sensitivity (gauge factor = 13.5) and ultra-stretchability (>550%).

Highly stretchable printed strain sensors using multi-walled carbon nanotube/silicone rubber composites

2017 ◽  
Vol 259 ◽  
pp. 44-49 ◽  
Author(s):  
Tim Giffney ◽  
Estelle Bejanin ◽  
Agee S. Kurian ◽  
Jadranka Travas-Sejdic ◽  
Kean Aw
Keyword(s):  
Carbon Nanotube ◽  
Silicone Rubber ◽  
Strain Sensors ◽  
Rubber Composites ◽  
Multi Walled Carbon Nanotube ◽  
Highly Stretchable

A highly sensitive and stress-direction-recognizing asterisk-shaped carbon nanotube strain sensor

2019 ◽  
Vol 7 (31) ◽  
pp. 9504-9512 ◽  
Author(s):  
Giheon Choi ◽  
Hayeong Jang ◽  
Seungtaek Oh ◽  
Hyewon Cho ◽  
Heemang Yoo ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Strain Sensor ◽  
Strain Sensors ◽  
Stress Direction ◽  
Highly Sensitive

Asterisk-shaped strain sensors have the recognizabilities of stress degree and direction to overcome the shortcomings of existing strain sensors.

scholarly journals Piezoresistive Multi-Walled Carbon Nanotube/Epoxy Strain Sensor with Pattern Design

Materials ◽  
2019 ◽  
Vol 12 (23) ◽  
pp. 3962 ◽  
Author(s):  
Mun-Young Hwang ◽  
Dae-Hyun Han ◽  
Lae-Hyong Kang
Keyword(s):  
Carbon Nanotube ◽  
Strain Gauge ◽  
Low Cost ◽  
Strain Sensor ◽  
High Sensitivity ◽  
Strain Sensors ◽  
Gauge Factor ◽  
Patch Type ◽  
Multi Walled Carbon Nanotube ◽  
Free Vibration Frequency

Carbon nanotube/polymer-based composites have led to studies that enable the realization of low-cost, high-sensitivity piezoresistive strain sensors. This study investigated the characteristics of piezoresistive multi-walled carbon nanotube (MWCNT)/epoxy composite strain sensors subjected to tensile and compressive loads in one direction at relatively small amounts of strain. A patterned sensor was designed to overcome the disadvantage of the load direction sensitivity differences in the existing sensors. The dispersion state of the MWCNTs in the epoxy polymer matrix with the proposed dispersion process was verified by scanning electron microscopy. An MWCNT/epoxy patterned strain sensor and a patch-type strain sensor were directly attached to an acrylic cantilever beam on the opposite side of a commercial metallic strain gauge. The proposed patterned sensor had gauge factors of 2.52 in the tension direction and 2.47 in the compression direction. The measured gauge factor difference for the patterned sensor was less than that for the conventional patch-type sensor. Moreover, the free-vibration frequency response characteristics were compared with those of metal strain gauges to verify the proposed patch-type sensor. The designed drive circuit compensated for the disadvantages due to the high drive voltage, and it was confirmed that the proposed sensor had higher sensitivity than the metallic strain gauge. In addition, the hysteresis of the temperature characteristics of the proposed sensor is presented to show its temperature range. It was verified that the patterned sensor developed through various studies could be applied as a strain sensor for structural health monitoring.

2D end-to-end carbon nanotube conductive networks in polymer nanocomposites: a conceptual design to dramatically enhance the sensitivities of strain sensors

Nanoscale ◽  
2018 ◽  
Vol 10 (5) ◽  
pp. 2191-2198 ◽  
Author(s):  
Jun-Hong Pu ◽  
Xiang-Jun Zha ◽  
Min Zhao ◽  
Shengyao Li ◽  
Rui-Ying Bao ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Polymer Nanocomposites ◽  
Conceptual Design ◽  
Strain Sensor ◽  
Small Strain ◽  
Strain Sensors ◽  
Sensitive Strain ◽  
Gauge Factor ◽  
Highly Sensitive ◽  
End To End

A highly sensitive strain sensor with end-to-end CNT networks and showing a high gauge factor (248) at small strain (5%) is fabricated.

A crack-based nickel@graphene-wrapped polyurethane sponge ternary hybrid obtained by electrodeposition for highly sensitive wearable strain sensors

2017 ◽  
Vol 5 (39) ◽  
pp. 10167-10175 ◽  
Author(s):  
Fei Han ◽  
Jinhui Li ◽  
Songfang Zhao ◽  
Yuan Zhang ◽  
Wangping Huang ◽  
...  
Keyword(s):  
Hybrid Material ◽  
Strain Sensor ◽  
Strain Sensors ◽  
Sensitive Strain ◽  
Nickel Nanoparticle ◽  
Highly Sensitive ◽  
Highly Stretchable ◽  
Polyurethane Sponge

A highly stretchable and ultra-sensitive strain sensor based on a nickel nanoparticle-coated graphene polyurethane sponge (Ni@GPUS) ternary hybrid material was fabricated.

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