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Multifunctional Highly Sensitive Multiscale Stretchable Strain Sensor Based on a Graphene/Glycerol-KCl Synergistic Conductive Network.
ACS Appl Mater Interfaces. 2018 Sep 19; 10(37):31716-31724.AA

Abstract

Stretchable strain sensors have promising applications in health monitoring and human motion detection. However, only a few of the strain sensors reported to date have exhibited a multiscale strain range and a high gauge factor simultaneously. As such, most strain sensors cannot be used in applications that require both high sensitivity and a multiscale strain range. In this work, we develop a wearable multifunctional strain sensor using graphene and a new ionic conductor as the sensing material and Ecoflex as the encapsulant. In the ionic conductor, KCl and glycerol are used as the electrolyte and solvent, respectively. This deformable ionic conductor connects cracked graphene sheets electronically, enabling the strain sensor to be stretched to 300% of its original length with a moderate gauge factor of 25.2. The sensor can respond to various mechanical deformations including stretching, bending, and pressing. When attached to human body, the sensor can monitor large-scale strains (>50%) for joint movement and small-scale strains (<10%) for facial expressions and pulses. When stretched, the sensor also shows good sensitivity in static temperature sensing. Therefore, this multifunctional stretchable sensor has good prospect of applications in human motion detection and health monitoring.

Authors+Show Affiliations

State Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Province Key Laboratory of Display Material and Technology, School of Electronics and Information Technology , Sun Yat-Sen University , Guangzhou 510275 , China.State Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Province Key Laboratory of Display Material and Technology, School of Electronics and Information Technology , Sun Yat-Sen University , Guangzhou 510275 , China.State Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Province Key Laboratory of Display Material and Technology, School of Electronics and Information Technology , Sun Yat-Sen University , Guangzhou 510275 , China.State Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Province Key Laboratory of Display Material and Technology, School of Electronics and Information Technology , Sun Yat-Sen University , Guangzhou 510275 , China.State Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Province Key Laboratory of Display Material and Technology, School of Electronics and Information Technology , Sun Yat-Sen University , Guangzhou 510275 , China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30148343

Citation

Liu, Chunrui, et al. "Multifunctional Highly Sensitive Multiscale Stretchable Strain Sensor Based On a Graphene/Glycerol-KCl Synergistic Conductive Network." ACS Applied Materials & Interfaces, vol. 10, no. 37, 2018, pp. 31716-31724.
Liu C, Han S, Xu H, et al. Multifunctional Highly Sensitive Multiscale Stretchable Strain Sensor Based on a Graphene/Glycerol-KCl Synergistic Conductive Network. ACS Appl Mater Interfaces. 2018;10(37):31716-31724.
Liu, C., Han, S., Xu, H., Wu, J., & Liu, C. (2018). Multifunctional Highly Sensitive Multiscale Stretchable Strain Sensor Based on a Graphene/Glycerol-KCl Synergistic Conductive Network. ACS Applied Materials & Interfaces, 10(37), 31716-31724. https://doi.org/10.1021/acsami.8b12674
Liu C, et al. Multifunctional Highly Sensitive Multiscale Stretchable Strain Sensor Based On a Graphene/Glycerol-KCl Synergistic Conductive Network. ACS Appl Mater Interfaces. 2018 Sep 19;10(37):31716-31724. PubMed PMID: 30148343.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Multifunctional Highly Sensitive Multiscale Stretchable Strain Sensor Based on a Graphene/Glycerol-KCl Synergistic Conductive Network. AU - Liu,Chunrui, AU - Han,Songjia, AU - Xu,Huihua, AU - Wu,Jin, AU - Liu,Chuan, Y1 - 2018/09/07/ PY - 2018/8/28/pubmed PY - 2018/8/28/medline PY - 2018/8/28/entrez KW - graphene KW - human motion detection KW - ionic conductor KW - strain sensor KW - stretchable SP - 31716 EP - 31724 JF - ACS applied materials & interfaces JO - ACS Appl Mater Interfaces VL - 10 IS - 37 N2 - Stretchable strain sensors have promising applications in health monitoring and human motion detection. However, only a few of the strain sensors reported to date have exhibited a multiscale strain range and a high gauge factor simultaneously. As such, most strain sensors cannot be used in applications that require both high sensitivity and a multiscale strain range. In this work, we develop a wearable multifunctional strain sensor using graphene and a new ionic conductor as the sensing material and Ecoflex as the encapsulant. In the ionic conductor, KCl and glycerol are used as the electrolyte and solvent, respectively. This deformable ionic conductor connects cracked graphene sheets electronically, enabling the strain sensor to be stretched to 300% of its original length with a moderate gauge factor of 25.2. The sensor can respond to various mechanical deformations including stretching, bending, and pressing. When attached to human body, the sensor can monitor large-scale strains (>50%) for joint movement and small-scale strains (<10%) for facial expressions and pulses. When stretched, the sensor also shows good sensitivity in static temperature sensing. Therefore, this multifunctional stretchable sensor has good prospect of applications in human motion detection and health monitoring. SN - 1944-8252 UR - https://www.unboundmedicine.com/medline/citation/30148343/Multifunctional_Highly_Sensitive_Multiscale_Stretchable_Strain_Sensor_Based_on_a_Graphene/Glycerol_KCl_Synergistic_Conductive_Network_ L2 - https://dx.doi.org/10.1021/acsami.8b12674 DB - PRIME DP - Unbound Medicine ER -
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