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Communication

Inductive Paper-Based Flexible Contact Force Sensor Utilizing Natural Micro-Nanostructures of Paper: Simplicity, Economy, and Eco-Friendliness

1
Department of Precision Instrument, Tsinghua University, Beijing 100084, China
2
Key Laboratory of Photonic Control Technology (Tsinghua University), Ministry of Education, Beijing 100084, China
3
State Key Laboratory of Precision Space-Time Information Sensing Technology, Beijing 100084, China
4
Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education, Collaborative Innovation Center of Advanced Nuclear Energy Technology, Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
*
Authors to whom correspondence should be addressed.
Micromachines 2024, 15(7), 890; https://doi.org/10.3390/mi15070890
Submission received: 6 June 2024 / Revised: 5 July 2024 / Accepted: 5 July 2024 / Published: 7 July 2024
(This article belongs to the Special Issue Flexible and Wearable Sensors, 3rd Edition)

Abstract

Inductive contact force sensors, known for their high precision and anti-interference capabilities, hold significant potential applications in fields such as wearable and medical monitoring devices. Most of the current research on inductive contact force sensors employed novel nanomaterials as sensitive elements to enhance their sensitivity and other performance characteristics. However, sensors developed through such methods typically involve complex preparation processes, high costs, and difficulty in biodegradation, which limit their further development. This article introduces a new flexible inductive contact force sensor using paper as a sensitive element. Paper inherently possesses micro- and nanostructures on its surface and interior, enabling it to sensitively convert changes in contact force into changes in displacement, making it suitable for use as the sensor’s sensitive element. Additionally, the advantages of paper also include its great flexibility, low cost, wide availability, and biodegradability. Performance testing on this flexible sensor showed good repeatability, hysteresis, sensitivity, and consistency. When used in experiments for monitoring human motion and respiration, this sensor also exhibited great detection performance. The proposed inductive paper-based flexible contact force sensor, with its simple structure, easy manufacturing process, cost-effectiveness, eco-friendliness, and good sensing performance, provides new insights into research for contact force sensors.
Keywords: flexible sensor; inductive sensor; micro–nanostructure; contact force sensor; paper-based sensor flexible sensor; inductive sensor; micro–nanostructure; contact force sensor; paper-based sensor

Share and Cite

MDPI and ACS Style

Zhang, H.; Zhu, J.; Yang, Y.; Liu, Q.; Xiong, W.; Yang, X. Inductive Paper-Based Flexible Contact Force Sensor Utilizing Natural Micro-Nanostructures of Paper: Simplicity, Economy, and Eco-Friendliness. Micromachines 2024, 15, 890. https://doi.org/10.3390/mi15070890

AMA Style

Zhang H, Zhu J, Yang Y, Liu Q, Xiong W, Yang X. Inductive Paper-Based Flexible Contact Force Sensor Utilizing Natural Micro-Nanostructures of Paper: Simplicity, Economy, and Eco-Friendliness. Micromachines. 2024; 15(7):890. https://doi.org/10.3390/mi15070890

Chicago/Turabian Style

Zhang, Haozhe, Junwen Zhu, Yujia Yang, Qiang Liu, Wei Xiong, and Xing Yang. 2024. "Inductive Paper-Based Flexible Contact Force Sensor Utilizing Natural Micro-Nanostructures of Paper: Simplicity, Economy, and Eco-Friendliness" Micromachines 15, no. 7: 890. https://doi.org/10.3390/mi15070890

APA Style

Zhang, H., Zhu, J., Yang, Y., Liu, Q., Xiong, W., & Yang, X. (2024). Inductive Paper-Based Flexible Contact Force Sensor Utilizing Natural Micro-Nanostructures of Paper: Simplicity, Economy, and Eco-Friendliness. Micromachines, 15(7), 890. https://doi.org/10.3390/mi15070890

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