High-performance piezoresistive flexible pressure sensor based on wrinkled microstructures prepared from discarded vinyl records and ultra-thin, transparent polyaniline films for human health monitoring

Liu, Chong; Xu, Li; Kong, Lingyu; Xu, Yuqing; Zhou, Wei; Qiang, Qinping; Liu, Tian; Chen, Wenbo; Cai, Ming; Lang, Tianchun; Han, Tao; Liu, Bitao

doi:10.1039/d2tc02326a

Cited by 24 publications

(13 citation statements)

References 46 publications

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“…[213,221,222] To enhance performance of conductive polymer devices inkjet printing, screen printing, and 3D printing are quick, easy, adaptable, affordable, and highresolution processes. [217,223] In the case of MOS-based sensing devices the long term stability can be improved by enhance the material stability, such as preventing grain growth and avoiding the effects of humidity and poisonous molecules, and the design of the sensing device. [219,220]…”

Section: Long-term Stability and Effect Of Humiditymentioning

confidence: 99%

Infrared Non‐Invasive Exhaled Biomarker Sensing: A Review

Ranu,

Rahman

et al. 2023

Advanced Sensor Research

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Exhaled breath analysis is considered an effective tool for diagnosing the patient's metabolic status because of its non‐invasive nature. Gas chromatography‐mass spectrometry (GC‐MS) and other mass spectrometry techniques are widely used for exhaled breath analysis. Nevertheless, the requirement of a handheld device for real‐time analysis and rapid processing time of multiple samples leads to advancing infrared (IR) based breath gas sensing techniques. Herein, the IR gas sensing technologies are discussed with a focus on non‐dispersive infrared (NDIR), photoacoustic (PAS), and tunable diode laser absorption spectroscopy (TDLAS) gas sensing technologies because of their highly selective gas detection among compound gases (mixture of VOCs), as well as their corresponding sensing mechanisms and characteristics, for real‐time monitoring of exhaled biomarkers. Carbon dioxide, acetone, ammonia, nitric oxide, methane, and ethylene are the significant biomarkers elaborated in this work with their respective clinical applications and the significance of non‐invasive real‐time monitoring using IR detectors. Challenges in selectivity and clinical trials leads to focus on this review. Current market analysis, present status of different techniques to detect specific biomarkers and other challenges with their possible solutions discussed in this review aid in developing highly selective IR‐based handheld breath VOC analyzers for early diagnosis and screening.

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Section: Long-term Stability and Effect Of Humiditymentioning

confidence: 99%

Infrared Non‐Invasive Exhaled Biomarker Sensing: A Review

Ranu,

Rahman

et al. 2023

Advanced Sensor Research

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“…Compressible and wearable pressure sensory devices have witnessed significant advances over the past 10 years owing to their numerous applications including human motion tracking, personal healthcare monitoring, soft robotics, artificial intelligence, and so forth. − Piezoresistive sensors are regarded as promising candidates for wearable pressure-sensing electronics due to their straightforward design, cost-effectiveness, simplicity of operation, and high compression and deformation sensitivity. − Pressure-sensing devices can convert pressure into variation in resistance, thus realizing the real-time detection of various motions and deformations via the change in current. Recently, flexible polymer and elastomeric films loaded with conducting particles including graphene, , graphite particles, carbon nanotubes (CNTs), − and conducting polymers (such as PEDOT:PSS, polyaniline, and so forth) − have been used as a sensing platform for flexible piezoresistive sensors. − For example, Liu and co-workers fabricated bacteria cellulose (BC) intercalated MXene films using plain paper as a flexible substrate by vacuum filtration. The assembled MXene/BC pressure sensor showed excellent sensing performance including high sensitivity in the low-pressure range, wide linear range, short response/recovery times (99/93 ms), and high stability of 5000 cycles .…”

Section: Introductionmentioning

confidence: 99%

Cicada-Wing-Inspired Highly Sensitive Tactile Sensors Based on Elastic Carbon Foam with Nanotextured Surfaces

Chang

Meng

et al. 2023

ACS Appl. Mater. Interfaces

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Electronic devices with tactile and pressure-sensing capabilities are becoming increasingly popular in the automatic industry, human motion/health monitoring, and artificial intelligence applications. Inspired by the natural nanotopography of the cicada wing, we propose here a straightforward strategy to fabricate a highly sensitive tactile sensor through nanotexturing of erected polyaniline (PANI) nanoneedles on a conductive and elastic three-dimensional (3D) carbon skeleton. The robust and compressible carbon networks offer a resilient and conducting matrix to catering complex scenarios; the biomimetic PANI nanoneedles firmly and densely anchored on a 3D carbon skeleton provide intimate electrical contact under subtle deformation. As a result, a piezoresistive tactile sensor with ultrahigh sensitivity (33.52 kPa–1), fast response/recovery abilities (97/111 ms), and reproducible sensing performance (2500 cycles) is developed, which is capable of distinguishing motions in a wide pressure range from 4.66 Pa to 60 kPa, detecting spatial pressure distribution, and monitoring various gestures in a wireless manner. These excellent performances demonstrate the great potential of nature-inspired tactile sensors for practical human motion monitoring and artificial intelligence applications.

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“…Recently, flexible piezoresistive sensors with micro/nano structures such as pyramids, , spheres, , wrinkles, − biomimetic structures, , and porous sponges − have been proposed. These micro/nano structures allow piezoresistive sensors to overcome material-related limitations by simultaneously reducing the electrical contact area and mechanical stiffness, resulting in improved sensor sensitivity and a wide sensing range.…”

Section: Introductionmentioning

confidence: 99%

Ultra-Broad Linear Range and Sensitive Flexible Piezoresistive Sensor Using Reversed Lattice Structure for Wearable Electronics

Bang

Chun

Lim

et al. 2023

ACS Appl. Mater. Interfaces

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Flexible pressure sensors have attracted significant attention owing to their broad applicability in wearable electronics and human–machine interfaces. However, it is still challenging to simultaneously achieve a broad sensing range and high linearity. Here, we present a reversed lattice structure (RLS) piezoresistive sensor obtained through a layer-level engineered additive infill structure via conventional fused deposition modeling three-dimensional (3D) printing. The optimized RLS piezoresistive sensor attained a pressure sensing range (0.03–1630 kPa) with high linearity (coefficient of determination, R 2 = 0.998) and sensitivity (1.26 kPa–1) due to the structurally enhanced compressibility and spontaneous transition of dominant sensing mechanism of the sensor. It also exhibited great mechanical/electrical durability and a rapid response/recovery time (170/70 ms). This remarkable performance enables the detection of various human motions over a broad spectrum, from pulse detection to human walking. Finally, a wearable electronic glove was developed to analyze the pressure distribution in various situations, thereby demonstrating its applicability in multipurpose wearable electronics.

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High-performance piezoresistive flexible pressure sensor based on wrinkled microstructures prepared from discarded vinyl records and ultra-thin, transparent polyaniline films for human health monitoring

Abstract: Flexible piezoresistive pressure sensors have attracted a great deal of attention because of their potential applications in areas such as human motion detection and health monitoring. The attachment of conducting...

Cited by 24 publications

References 46 publications

Infrared Non‐Invasive Exhaled Biomarker Sensing: A Review

Infrared Non‐Invasive Exhaled Biomarker Sensing: A Review

Cicada-Wing-Inspired Highly Sensitive Tactile Sensors Based on Elastic Carbon Foam with Nanotextured Surfaces

Ultra-Broad Linear Range and Sensitive Flexible Piezoresistive Sensor Using Reversed Lattice Structure for Wearable Electronics

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