Highly Sensitive and Flexible Tactile Sensor with Truncated Pyramid-Shaped Porous Graphene/Silicone Rubber Composites for Human Motion Detection

Tuning the electromechanical performance in piezoresistive composite strain sensors is primarily attained through appropriately employing the materials system and the fabrication process. High sensitivity along with flexibility in the strain sensing devices needs to be met according to the application (e.g. human motion detection, health and sports monitoring). In this paper, a highly stretchable and sensitive strain sensor with a low-cost fabrication is proposed which is acquired by embedding the chopped carbon fibers sandwiched in between silicone rubber layers. The electrical and mechanical features of the sensor were characterized through stretch/release loading tests where a considerably high sensitivity (the gauge factor about 100) was observed with very low hysteresis. This implies high strain reversibility (i.e. full recovery in each cycle) over 700 loading cycles. Moreover, the sensors exhibited ultra-high stretchability (up to ∼300% elongation) in addition to a low stiffness meaning minimal mechanical effects induced by the sensor for sensitive human motion monitoring applications including large and small deformations. The results suggest the promising capability of the present sensor in reflecting the human body motion detection.

Download Full-text

Highly sensitive, stretchable and wearable strain sensors using fragmented conductive cotton fabric

Journal of Materials Chemistry C ◽

10.1039/c8tc03702g ◽

2018 ◽

Vol 6 (39) ◽

pp. 10524-10531 ◽

Cited By ~ 32

Author(s):

Hamid Souri ◽

Debes Bhattacharyya

Keyword(s):

Cotton Fabric ◽

Motion Detection ◽

Human Motion ◽

Strain Sensors ◽

Soft Robotics ◽

Natural Materials ◽

Human Motion Detection ◽

Highly Sensitive

Recent advancements in stretchable, flexible and wearable strain sensors, based on natural materials, show their interesting potential for use in human motion detection, soft robotics and human–machine interactions.

Download Full-text

Flexible, eco-friendly and highly sensitive paper antenna based electromechanical sensor for wireless human motion detection and structural health monitoring

Extreme Mechanics Letters ◽

10.1016/j.eml.2016.09.007 ◽

2016 ◽

Vol 9 ◽

pp. 324-330 ◽

Cited By ~ 20

Author(s):

Srinivasulu Kanaparthi ◽

Veerla Raja Sekhar ◽

Sushmee Badhulika

Keyword(s):

Structural Health Monitoring ◽

Health Monitoring ◽

Motion Detection ◽

Human Motion ◽

Structural Health ◽

Human Motion Detection ◽

Highly Sensitive

Download Full-text

Highly sensitive self-powered pressure and strain sensor based on crumpled MXene film for wireless human motion detection

Nano Energy ◽

10.1016/j.nanoen.2021.106689 ◽

2021 ◽

pp. 106689

Author(s):

Yule Cao ◽

Yinben Guo ◽

Zixi Chen ◽

Weifeng Yang ◽

Kerui Li ◽

...

Keyword(s):

Motion Detection ◽

Strain Sensor ◽

Human Motion ◽

Human Motion Detection ◽

Highly Sensitive ◽

Self Powered

Download Full-text

Highly sensitive, tunable, and durable gold nanosheet strain sensors for human motion detection

Journal of Materials Chemistry C ◽

10.1039/c6tc00251j ◽

2016 ◽

Vol 4 (24) ◽

pp. 5642-5647 ◽

Cited By ~ 50

Author(s):

Guh-Hwan Lim ◽

Nae-Eung Lee ◽

Byungkwon Lim

Keyword(s):

Motion Detection ◽

Simple Structure ◽

Human Motion ◽

Strain Sensors ◽

Multilayered Film ◽

Human Motion Detection ◽

Highly Sensitive ◽

Highly Stretchable

We report highly sensitive, tunable, and durable strain sensors based on a simple structure consisting of a multilayered film of gold (Au) nanosheets as a sensing layer on a highly stretchable Ecoflex substrate.

Download Full-text