Advance on flexible pressure sensors based on metal and carbonaceous nanomaterial

Liu, Meng-Yang; Hang, Cheng-Zhou; Zhao, Xuefeng; Zhu, Li-Yuan; Ma, Ruguang; Wang, Jiacheng; Lu, Hong‐Liang; Zhang, David Wei

doi:10.1016/j.nanoen.2021.106181

Cited by 118 publications

(59 citation statements)

References 233 publications

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“…As for the piezoresistive flexible pressure sensors, the distribution of plasmonic units (such as the spiky Au/Ag NPs 145 ) in the insulative flexible matrix generates even more superior quantum tunneling effect for an enhanced sensing function. 146 Mechanical Stability and Sensing Consistency (Figure 3d). While the physical contact between plasmonic units and rigid substrate tremendously severely limits the mechanical stability, the poor environmental tolerance greatly impedes the loop sensing performance.…”

Section: Flexible Biosensorsan Adaptive and Resilient Healthcare Sol...mentioning

confidence: 95%

“…One example in this context is that the traditional SERS detection with fixed NP locations on substrate often results in unavailable optimal detection signal amplification. , However, the recent development of a flexible SERS sensing platform can effectively settle the issue by generating tunable interparticle gap distances in response to the applied strain, which will not only endow optimal detection signal amplification but also broaden the detecting ranges with the adjustable optical spectra. − Moreover, the tailorable quantum tunneling property , of flexible plasmonic biosensors cannot be realized in rigid plasmonic biosensors. As for the piezoresistive flexible pressure sensors, the distribution of plasmonic units (such as the spiky Au/Ag NPs) in the insulative flexible matrix generates even more superior quantum tunneling effect for an enhanced sensing function …”

Section: Integration Of “Flexible” and “Plasmonic” In Biosensorsmentioning

confidence: 99%

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Flexible Plasmonic Biosensors for Healthcare Monitoring: Progress and Prospects

et al. 2021

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The noble metal nanoparticle has been widely utilized as a plasmonic unit to enhance biosensors, by leveraging its electric and/or optical properties. Integrated with the “flexible” feature, it further enables opportunities in developing healthcare products in a conformal and adaptive fashion, such as wrist pulse tracers, body temperature trackers, blood glucose monitors, etc. In this work, we present a holistic review of the recent advance of flexible plasmonic biosensors for the healthcare sector. The technical spectrum broadly covers the design and selection of a flexible substrate, the process to integrate flexible and plasmonic units, the exploration of different types of flexible plasmonic biosensors to monitor human temperature, blood glucose, ions, gas, and motion indicators, as well as their applications for surface-enhanced Raman scattering (SERS) and colorimetric detections. Their fundamental working principles and structural innovations are scoped and summarized. The challenges and prospects are articulated regarding the critical importance for continued progress of flexible plasmonic biosensors to improve living quality.

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Section: Flexible Biosensorsan Adaptive and Resilient Healthcare Sol...mentioning

confidence: 95%

Section: Integration Of “Flexible” and “Plasmonic” In Biosensorsmentioning

confidence: 99%

Flexible Plasmonic Biosensors for Healthcare Monitoring: Progress and Prospects

et al. 2021

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“…Flexible pressure sensors could convert subtle mechanical signals to electronic signals, mainly divided into piezoelectric, capacitive, and piezoresistive types. Compared with the other two kinds of flexible pressure sensors, piezoresistive pressure sensors have a simpler structure and more comprehensive measurement range [ 11 ]. Recently, piezoresistive pressure sensors have great application potential in health monitoring, artificial intelligence, and human posture detection [ 12 , 13 , 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

Flexible Pressure Sensor Array with Multi-Channel Wireless Readout Chip

Wangxu

Lyu

et al. 2022

Sensors

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Flexible sensor arrays are widely used for wearable physiological signal recording applications. A high density sensor array requires the signal readout to be compatible with multiple channels. This paper presents a highly-integrated remote health monitoring system integrating a flexible pressure sensor array with a multi-channel wireless readout chip. The custom-designed chip features 64 voltage readout channels, a power management unit, and a wireless transceiver. The whole chip fabricated in a 65 nm complementary metal-oxide-semiconductor (CMOS) process occupies 3.7 × 3.7 mm2, and the core blocks consume 2.3 mW from a 1 V supply in the wireless recording mode. The proposed multi-channel system is validated by measuring the ballistocardiogram (BCG) and pulse wave, which paves the way for future portable remote human physiological signals monitoring devices.

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“…Currently, pressure mechanical stimulation is essential in human-computer interaction (HCI) owing to significant development in the field of micro-smart devices such as the internet of things (IoT) and future electronic skin. [1][2][3][4] Meanwhile, the development of flexible pressure sensors has attracted the interest of many researchers because of its good flexibility, light weight and could meet the demands of real-time health monitoring applications. [5][6][7][8][9] In recent years, researchers have mainly used traditional pressure sensing mechanisms (piezoresistive, relatively wide interlayer spacing for the transport of water molecules (H 2 O), while the original hydrophobic graphite layer promotes rapid water penetration through a nearly frictionless flow.…”

Section: Introductionmentioning

confidence: 99%

An Ion Channel‐Induced Self‐Powered Flexible Pressure Sensor Based on Potentiometric Transduction Mechanism

Lei

Zhang

Liu

et al. 2021

Adv Funct Materials

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Great efforts have been made to build multifunctional flexible pressure sensing devices to enable future wearable electronics. However, a green‐safe, cost‐effective, self‐powered integrated pressure sensing system remains challenging. Herein, an all‐solid‐state pressure sensing rGM (rGO/GO/PVA nanofibers/MXene) system is designed and developed based on a mechanical potentiometric transduction (MPT) mechanism, which converts mechanical stimulation into the change in the ion transport channel and encodes it into the measured potential difference between two electrodes with hydrated GO, thereby generating potential conduction behavior as well as a programmable stable voltage and current. The self‐powered rGM sensor can yield an output open‐circuit voltage of 0.58 V and a short‐circuit current density of 3.2 µA cm–2 when experiencing a steady mechanical pressure. Unlike typical pressure sensors, rGM sensors have an ultrawide detection range (0.7 Pa–1300 kPa), high stability (maintain 95% performance after 5000 cycles), high adjustability, simple preparation method, implying that the rGM sensor can provide real‐time monitoring for human physiological signals without an external power supply, which has a wide‐range impact on medical care. This work presents a new design based on the MPT mechanism that will significantly simplify manufacturing while improving the performance of future electronic devices and smart systems.

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Advance on flexible pressure sensors based on metal and carbonaceous nanomaterial

Cited by 118 publications

References 233 publications

Flexible Plasmonic Biosensors for Healthcare Monitoring: Progress and Prospects

Flexible Plasmonic Biosensors for Healthcare Monitoring: Progress and Prospects

Flexible Pressure Sensor Array with Multi-Channel Wireless Readout Chip

An Ion Channel‐Induced Self‐Powered Flexible Pressure Sensor Based on Potentiometric Transduction Mechanism

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