DataVXAdvanced Materials TechnologiesPaper
journal article·2021-06

3D Crinkled Alk‐Ti3C2 MXene Based Flexible Piezoresistive Sensors with Ultra‐High Sensitivity and Ultra‐Wide Pressure Range

Yucui Xiang, Liang Fang, Fang Wu, Shufang Zhang, Haibo Ruan, Haijun Luo, Hong Zhang, Wanjun Li, Xingming Long, Baoshan Hu, Miao Zhou

Advanced Materials Technologies· Volume 6· Issue 6
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Source abstract

Abstract

Abstract The conflict between high sensitivity and wide sensing range greatly limits the extensive application of flexible pressure sensors. To produce a sensor with both high sensitivity and wide range is still a challenging work. Herein, flexible and highly sensitive piezoresistive sensors with wide sensing range are developed by combining the alkali‐treated 3D crinkled MXene with microstructured polydimethylsiloxane (PDMS). Sensors with different‐roughness PDMS films as flexible substrate and the unprocessed MXene as the conductive material are prepared to clarify the geometric design for the ultra‐wide pressure range (0–800 kPa). Then, other sensors assembled by NaOH‐alkalized 3D crinkled MXenes and rough PDMS are fabricated to illustrate that the material optimization can further enhance the sensitivity (up to 1104.38 kPa−1). The sensor shows a low limit of detection (17 Pa), fast response time (100 ms), good cycle stability (3000 cycles, 300 kPa), and can detect over a wide pressure range from that of the tiny pills, pulse, heartbeat, throat vibration, and the change of water weight, exhibiting a broad prospect in health monitoring systems and human‐machine interaction.
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Research context

OpenAlex topics: Advanced Sensor and Energy Harvesting Materials · Dielectric materials and actuators · MXene and MAX Phase Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Power Transmission Equipment & System Safety and New Technology Chongqing Key Laboratory of Soft Condensed Matter Physicsand Smart Materials College of Physics Chongqing University Chongqing 400044 P. R. China

College of Software Chongqing College of Electronic Engineering Chongqing 401331 P. R. China

Research Center for Materials Interdisciplinary Sciences Chongqing University of Arts and Sciences Chongqing 402160 P. R. China

Key Laboratory on Optoelectronic Functional Materials College of Physics and Electronic Engineering Chongqing Normal University Chongqing 401331 P. R. China

College of Chemistry and Chemical Engineering Chongqing University Chongqing 401331 P. R. China

Key Laboratory of Optoelectronic Technology and Systems of the Education Ministry of China College of Optoelectronic Engineering Chongqing University Chongqing 400044 P. R. China

Funding

Natural Science Foundation of Chongqing · Chongqing University · State Key Laboratory of Luminescence and Applications · National Natural Science Foundation of China

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