Wearable Sensors: Flexible Piezoresistive Sensor Patch Enabling Ultralow Power Cuffless Blood Pressure Measurement (Adv. Funct. Mater. 8/2016)

Luo, Ningqi; Dai, Wenxuan; Li, Chenglin; Zhou, Zhiquan; Lu, Liyuan; Poon, Chi‐Sang; Chen, Shih‐Chi; Zhang, Yuan-Ting; Zhao, Ni

doi:10.1002/adfm.201670051

Cited by 9 publications

(6 citation statements)

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“…Thus, compared with a single function, multifunctional wearable devices with the capability of sensing tactile, temperature, and vibration are competitive for use as health monitoring systems. [80][81][82][83] Among the many sensors that have been developed, temperature sensors that can detect body and ambient temperature to act as a warning of potential hazards have shown good development prospects. However, up to now, thermoelectric materials have not been widely applied as temperature sensors in wearable electronics due to their intrinsic drawbacks.…”

Section: Pyroelectric or Thermoelectric Effectmentioning

confidence: 99%

Self‐Powered Wearable Piezoelectric Monitoring of Human Motion and Physiological Signals for the Postpandemic Era: A Review

Wang

Wei

et al. 2022

Adv Materials Technologies

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populations. Moreover, with the advent of the novel coronavirus disease (COVID-19), significant investment in medical resources is required. Under the umbrella of the global COVID-19 pandemic, the use of biosensors in healthcare and online medical care are becoming ubiquitous, which represent methods that can be used to detect signs from the human body for further health analysis. Furthermore, the internet of things (IoT) technology in healthcare is a method by which biosensorembedded objects can be worn on the human body in everyday life that continuously measure and digitize health information without any burden to the wearer. [1] Recently, various biometric technologies have been developed, wearable devices such as smart watches, invasive biodevices, and devices that sense the everyday surrounding environment of the wearer. Medical data can be collected using such devices, which can then be further analyzed by artificial intelligence (AI). These data can then be used for health promotion, prevention of disease, and early disease diagnosis. Moreover, with the advent of COVID-19, healthcare IoT (HIoT) technology has become extremely important. [2] In terms of the individual, when a mask is constantly worn it may cause lung damage to the user. Therefore, the HIoT would make a significant contribution in this case to offer forewarning about the situations of the lungs As society advances, the shift from passive medical care to health management and preventive medical care has become an important issue, with the realization of wearable monitors becoming desirable. In light of the COVID-19 pandemic, the number of patients who are in urgent need of the monitoring of biological information is increasing. This review focuses on piezoelectric materials and composites that convert kinetic energy into electrical energy to realize self-powered wearable monitoring sensors, outlining the recent research activity on sensors for use in healthcare monitoring. First, a general description of the principles of piezoelectric monitoring sensors is given. Next, the development status of piezoelectric materials and composites aimed at the application of detecting tiny motions of the human body is introduced, and then the research trends on the detection of larger human body movements are highlighted. Finally, after presenting the performance of current piezoelectric sensors and future research guidelines for developing multifunctional systems in the post COVID-19 era, the achievements are summarized. Overall, this review will provide guidance to researchers who are seeking to design and develop highly sensitive self-powered piezoelectric sensors that monitor human motion and physiological signals.The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/admt.202200318.

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Section: Pyroelectric or Thermoelectric Effectmentioning

confidence: 99%

Self‐Powered Wearable Piezoelectric Monitoring of Human Motion and Physiological Signals for the Postpandemic Era: A Review

Wang

Wei

et al. 2022

Adv Materials Technologies

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“…neural pathways. [1,2] Up to now, a variety of soft bioelectronics have emerged to evaluate human health including body temperature, [3,4] heart rate, [5] pulse rate, [6] respiration, [7] and blood pressure, et al [8] However, these electronics-integrated materials are often limited by the complex fabrication processes, high cost, and low biosecurity. Therefore, developing updated materials with excellent biosafety and versatile sensory ability is highly demanded and imperative.…”

Section: Introductionmentioning

confidence: 99%

A Smart Patch with On‐Demand Detachable Adhesion for Bioelectronics

Shi

2021

Small

115

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A smart ionic skin patch with on‐demand detachable adhesion has been developed as human–machine interface for physiological signal monitoring. In spite of the multifunctions demonstrated by existing ionic skin, it is still difficult to distinguish different signals simultaneously. Moreover, the secondary damages to the tissues are often overlooked when the adhesive materials are removing from the wound. Herein, a multifunctional biomimetic hydrogel with temperature, mechanical, electrical, and pH response is developed. This hydrogel is designed by in situ polymerizing of hydrophilic anion monomers in a natural cationic polysaccharide to construct multifunctional biomimetic ionic channel. Due to the reversible physical cross‐linked network and thermosensitivity, the mechanical properties, adhesion, and visual effect of the hydrogel can be tuned by changing hydrogen bonding density via phase transition, thus making it an excellent biosafe material for wearable device. The hydrogel is utilized as skin patch intended for monitoring physiological signals stimulated by physical and chemical changes involving pressure, temperature, pH value, and electrocardiograph. Especially, this ionic skin patch can recognize temperature change signals precisely either in broad or extremely narrow temperature range. This smart skin patch can even recognize the pressure and temperature signals in real time and differentiate the signals simultaneously.

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“…Skin is not only the first barrier for humans to resist external damage but also one of the means by which humans perceive the world and obtain information . The skin has the largest sensor network, capable of simultaneously detecting and distinguishing various stimuli such as pressure, strain, temperature, humidity, and pain. − Electronic skin simulates and replicates the various characteristics of human skin by combining new materials and structural designs. − For human skin, it uses muscles and nerves to transmit signals to the brain when it receives external stimuli. The working principle of electronic skin is also the same.…”

Section: Introductionmentioning

confidence: 99%

Highly Sensitive Flexible Tactile Sensor Mimicking the Microstructure Perception Behavior of Human Skin

Wang

Cen

Zeng

2021

ACS Appl. Mater. Interfaces

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A 3D printed flexible tactile sensor with graphene–polydimethylsiloxane (PDMS) microspheres for microstructure perception is presented. The structure of the tactile sensor is inspired by the texture of the human finger and is designed to enable the detection of various levels of surface roughness via the processing of tactile signals. The tactile sensor with a unique graphene–PDMS microsphere structure shows excellent comprehensive mechanical properties, including a robust stretching ability (elongation at break of the sensing layer is 70%), excellent sensing ability (short response time of 60 ms), high sensitivity (sensitivity up to 2.4 kPa–1), and cycle stability (over 2000 loading cycles). In addition, such versatility and sensitivity allow the electronic skin not only to accurately monitor pressure but also to distinguish various surface topographies with microscale differences, and to detect the action of an air fluid.

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Wearable Sensors: Flexible Piezoresistive Sensor Patch Enabling Ultralow Power Cuffless Blood Pressure Measurement (Adv. Funct. Mater. 8/2016)

Cited by 9 publications

References 0 publications

Self‐Powered Wearable Piezoelectric Monitoring of Human Motion and Physiological Signals for the Postpandemic Era: A Review

Self‐Powered Wearable Piezoelectric Monitoring of Human Motion and Physiological Signals for the Postpandemic Era: A Review

A Smart Patch with On‐Demand Detachable Adhesion for Bioelectronics

Highly Sensitive Flexible Tactile Sensor Mimicking the Microstructure Perception Behavior of Human Skin

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