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Highly Sensitive and Large-Range Strain Sensor with a Self-Compensated Two-Order Structure for Human Motion Detection.
ACS Appl Mater Interfaces. 2019 Feb 27; 11(8):8527-8536.AA

Abstract

Constructing flexible, high-sensitivity strain sensors with large working ranges is an urgent task in view of their widespread applications, including human health monitoring. Herein, we propose a self-compensated two-order structure strategy to significantly enhance the sensitivity and workable range of strain sensors. Three-dimensional printing was employed to construct highly stretchable, conductive polymer composite open meshes, in which the percolation network of graphene sheets constitutes a deformable conductive path. Meanwhile, the graphene layer coated on the open mesh provides an additional conductive path that can compensate spontaneously for the conductivity loss of the percolation network at large strains, through new conductive paths formed by the graphene sheets in the coating layer and the inner networks. At strains lower than 20%, the sliding and disconnection of graphene sheets coated on the mesh surface largely enhance the sensitivity of the sensor, a 20 times increase as opposed to that of the non-two-order structure sensor. The resulting sensor reveals high gauge factors (from 18.5 to 88 443) in a strain range of 0-350% and the exceptional capability to monitor a wide range of human motions, from the subtle pulse, acoustic vibration to breathing and arm bending.

Authors+Show Affiliations

State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Collaborative Innovation Center of Polymers and Polymer Composites , Fudan University , 2005 Songhu Road , Shanghai 200438 , China.State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Collaborative Innovation Center of Polymers and Polymer Composites , Fudan University , 2005 Songhu Road , Shanghai 200438 , China.Department of Industrial Design , Eindhoven University of Technology , P.O. Box 513, Eindhoven 5600 MB , The Netherlands.Center for Intelligent Medical Electronics, School of Information Science and Technology , Fudan University , 220 Han Dan Road , Shanghai 200433 , China.Center for Intelligent Medical Electronics, School of Information Science and Technology , Fudan University , 220 Han Dan Road , Shanghai 200433 , China.State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Collaborative Innovation Center of Polymers and Polymer Composites , Fudan University , 2005 Songhu Road , Shanghai 200438 , China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30730127

Citation

Ma, Jianhua, et al. "Highly Sensitive and Large-Range Strain Sensor With a Self-Compensated Two-Order Structure for Human Motion Detection." ACS Applied Materials & Interfaces, vol. 11, no. 8, 2019, pp. 8527-8536.
Ma J, Wang P, Chen H, et al. Highly Sensitive and Large-Range Strain Sensor with a Self-Compensated Two-Order Structure for Human Motion Detection. ACS Appl Mater Interfaces. 2019;11(8):8527-8536.
Ma, J., Wang, P., Chen, H., Bao, S., Chen, W., & Lu, H. (2019). Highly Sensitive and Large-Range Strain Sensor with a Self-Compensated Two-Order Structure for Human Motion Detection. ACS Applied Materials & Interfaces, 11(8), 8527-8536. https://doi.org/10.1021/acsami.8b20902
Ma J, et al. Highly Sensitive and Large-Range Strain Sensor With a Self-Compensated Two-Order Structure for Human Motion Detection. ACS Appl Mater Interfaces. 2019 Feb 27;11(8):8527-8536. PubMed PMID: 30730127.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Highly Sensitive and Large-Range Strain Sensor with a Self-Compensated Two-Order Structure for Human Motion Detection. AU - Ma,Jianhua, AU - Wang,Peng, AU - Chen,Hongyu, AU - Bao,Shenjie, AU - Chen,Wei, AU - Lu,Hongbin, Y1 - 2019/02/15/ PY - 2019/2/8/pubmed PY - 2019/7/19/medline PY - 2019/2/8/entrez KW - 3D printing KW - graphene KW - human motion detection KW - strain sensor KW - two-order structure SP - 8527 EP - 8536 JF - ACS applied materials & interfaces JO - ACS Appl Mater Interfaces VL - 11 IS - 8 N2 - Constructing flexible, high-sensitivity strain sensors with large working ranges is an urgent task in view of their widespread applications, including human health monitoring. Herein, we propose a self-compensated two-order structure strategy to significantly enhance the sensitivity and workable range of strain sensors. Three-dimensional printing was employed to construct highly stretchable, conductive polymer composite open meshes, in which the percolation network of graphene sheets constitutes a deformable conductive path. Meanwhile, the graphene layer coated on the open mesh provides an additional conductive path that can compensate spontaneously for the conductivity loss of the percolation network at large strains, through new conductive paths formed by the graphene sheets in the coating layer and the inner networks. At strains lower than 20%, the sliding and disconnection of graphene sheets coated on the mesh surface largely enhance the sensitivity of the sensor, a 20 times increase as opposed to that of the non-two-order structure sensor. The resulting sensor reveals high gauge factors (from 18.5 to 88 443) in a strain range of 0-350% and the exceptional capability to monitor a wide range of human motions, from the subtle pulse, acoustic vibration to breathing and arm bending. SN - 1944-8252 UR - https://www.unboundmedicine.com/medline/citation/30730127/Highly_Sensitive_and_Large_Range_Strain_Sensor_with_a_Self_Compensated_Two_Order_Structure_for_Human_Motion_Detection_ L2 - https://dx.doi.org/10.1021/acsami.8b20902 DB - PRIME DP - Unbound Medicine ER -