scholarly journals Ultra-stretchable MWCNT–Ecoflex piezoresistive sensors for human motion detection applications

2019 ◽  
Vol 173 ◽  
pp. 118-124 ◽  
Author(s):  
Huy Mai ◽  
Rahim Mutlu ◽  
Charbel Tawk ◽  
Gursel Alici ◽  
Vitor Sencadas
Keyword(s):  
Motion Detection ◽  
Human Motion ◽  
Piezoresistive Sensors ◽  
Human Motion Detection

scholarly journals PDMS Sponges with Embedded Carbon Nanotubes as Piezoresistive Sensors for Human Motion Detection

Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1740
Author(s):  
Blake Herren ◽  
Vincent Webster ◽  
Eric Davidson ◽  
Mrinal C. Saha ◽  
M. Cengiz Altan ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Motion Detection ◽  
Human Motion ◽  
Joint Motion ◽  
Piezoresistive Sensors ◽  
Elastomeric Matrix ◽  
Human Motion Detection ◽  
Facile Fabrication ◽  
Removal Technique ◽  
Porous Nanocomposite

Porous piezoresistive sensors offer promising flexible sensing functionality, such as human joint motion detection and gesture identification. Herein, a facile fabrication method is developed using a microwave-based rapid porogen removal technique for the manufacturing of porous nanocomposite sponges consisting of polydimethylsiloxane (PDMS) and well-dispersed carbon nanotubes (CNTs). The porogen amounts and CNT loadings are varied to tailor the porosity and electrical properties of the porous sensors. The sponges are characterized by a scanning electron microscope (SEM) to compare their microstructures, validate the high-quality CNT dispersion, and confirm the successful nanofiller embedding within the elastomeric matrix. Sponges with a 3 wt% CNT loading demonstrate the highest piezoresistive sensitivity. Experimental characterization shows that the sponges with low porosity have long durability and minimal strain rate dependence. Additionally, the developed sponges with 3 wt% CNTs are employed for the human motion detection using piezoresistive method. One experiment includes fingertip compression measurements on a prosthetic hand. Moreover, the sensors are attached to the chest, elbow, and knee of a user to detect breathing, running, walking, joint bending, and throwing motions.

scholarly journals Flexible and wearable strain sensor based on electrospun carbon sponge/polydimethylsiloxane composite for human motion detection

RSC Advances ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 4186-4193
Author(s):  
He Gong ◽  
Chuan Cai ◽  
Hongjun Gu ◽  
Qiushi Jiang ◽  
Daming Zhang ◽  
...  
Keyword(s):  
Motion Detection ◽  
Strain Sensor ◽  
Human Motion ◽  
Gauge Factor ◽  
Human Motion Detection ◽  
Tensile Strains

Electrospun carbon sponge was used to measure tensile strains with a high gauge factor.

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