Fingerprint-inspired graphene pressure sensor with wrinkled structure

Weng, Mingcen; Sun, Lingqin; Qu, Shuixian; Chen, Luzhuo

doi:10.1016/j.eml.2020.100714

Cited by 36 publications

(18 citation statements)

References 38 publications

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“…Compared with the previously reported piezoresistive sensors that exhibited high sensitivity in a low-pressure range (Fig. 3b), [22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40] our piezoresistive sensor provides high sensitivity in a quite wide sensory range. In addition, another linear relationship between DI/I 0 and applied pressure P was also observed in the pressure range of 3.08-28.85 kPa, with a sensitivity of 0.48 kPa À1 .…”

Section: Resultsmentioning

confidence: 65%

Tannery solid waste-derived cross-scale deformable piezoresistive sensors for monitoring human body motions

et al. 2022

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Section: Resultsmentioning

confidence: 65%

Tannery solid waste-derived cross-scale deformable piezoresistive sensors for monitoring human body motions

et al. 2022

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“…Experiments show that the sensor has a sensitivity of 606.15 kPa −1 in the pressure range of 0–6 kPa, a sensitivity of 40 341.53 kPa −1 in the pressure range of 6–8 kPa, and a sensitivity of 136 018.16 kPa −1 in the pressure range of 8–9.5 kPa, and the minimum pressure that can be detected is 0.2 Pa (Figure 12d). Weng [ 98 ] made a novel rGO pressure sensor. The rGO films were designed to form a bionic crack structure through a simple stretch‐release process.…”

Section: Biomimetic Structures In Flexible Pressure Sensorsmentioning

confidence: 99%

“…Reproduced with permission. [98] Copyright 2020, Elsevier. flexible piezoresistive pressure sensor with a bionic cilia structure made by Liu [99] et al can not only sense pressure but also sense magnetic fields.…”

Section: Cilia Structurementioning

confidence: 99%

Flexible Pressure Sensors Based on Bionic Microstructures: From Plants to Animals

Tan

Xuehong

Tang

et al. 2022

Adv Materials Inter

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Numerous wearable devices have been applied in people's daily lives. As the core component of wearable devices, flexible pressure sensors play an especially important role in various fields because of their excellent adaptability to the environment. Various high‐performance flexible pressure sensors have been developed, and much research is still being conducted to increase the performance of flexible pressure sensors. A variety of materials with excellent properties have been created, many advanced manufacturing methods have been developed, and different microstructures have been attempted and applied to flexible pressure sensors. To optimize the performance of sensors, flexible pressure sensors with bionic microstructures from the perspective of bionics have attracted increasing attention, which can bring new designs and improve the performance. This paper mainly summarizes various kinds of flexible pressure sensors with bionic structures developed in recent years. The main contents include the following parts: an introduction to the current state‐of‐the‐art flexible pressure sensors; substrate and active materials, sensing mechanisms, key parameters, and sensitivity optimization strategies; various kinds of bionic microstructures applied to flexible pressure sensors and characterization of the performance; applications of flexible pressure sensors; and prospects and potential challenges of flexible pressure sensors.

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“…Therefore, the difference in the microstructure of the active site of the sensor can largely influence the performance of the sensor, such as sensitivity. At present, the microstructures of the active layer that has been reported include hollow microstructures, microcapsules, snail tentacles, DNA-like double helix, hemispheres, pyramids, ,, bionic fingerprint, microporous, leaf patterns, surface concave–convex, sea-urchin, etc. Among them, the leaf-like layered pressure sensor reported by Jian et al used the natural leaf surface as the mold and the ACNT/G hybrid film as the conductive layer, achieving a high sensitivity of 19.8 kPa –1 , but the measurement range was only 6 kPa.…”

Section: Introductionmentioning

confidence: 99%

Flexible Pressure Sensors with Combined Spraying and Self-Diffusion of Carbon Nanotubes

Zhang

Liu

Wang

et al. 2022

ACS Appl. Mater. Interfaces

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High-performance wearable sensors are required for applications in medical health and human–machine interaction, but their application has limited owing to the trade-off between sensitivity, pressure range, and durability. Herein, we propose the combined spraying and self-diffusion process of carbon nanotubes (CNTs) to balance and improve these parameters with the CNTs spontaneously diffusing into the film surface before the film curing. The obtained sensor not only achieves high sensitivity (155.54 kPa–1) and ultrawide pressure detection range (0.1–500 kPa) but also exhibits exceptional durability (over 12,000 pressure cycles at a high pressure of 300 kPa). In addition, the sensor exhibits a fast response (25 ms), good stability, and full flexibility. This process is a general approach that may improve the performance of various types of thin film piezoresistive sensors. Besides, the fabricated sensors can be flexibly scaled into sensor arrays and communicate with smart devices to achieve wireless smart monitoring. At present, the sensor shows broad application prospects in the fields of intelligent medical health and motion sensing.

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Fingerprint-inspired graphene pressure sensor with wrinkled structure

Cited by 36 publications

References 38 publications

Tannery solid waste-derived cross-scale deformable piezoresistive sensors for monitoring human body motions

Tannery solid waste-derived cross-scale deformable piezoresistive sensors for monitoring human body motions

Flexible Pressure Sensors Based on Bionic Microstructures: From Plants to Animals

Flexible Pressure Sensors with Combined Spraying and Self-Diffusion of Carbon Nanotubes

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