The rapid advancement of personalized healthcare brings forth a myriad of self-powered integrated sweat fabric systems.However,challenges such as alkaline by-products,low open-circuit voltage and output power have mad...The rapid advancement of personalized healthcare brings forth a myriad of self-powered integrated sweat fabric systems.However,challenges such as alkaline by-products,low open-circuit voltage and output power have made them unsuit-able for the continuously powering biosensors.Here,we have designed a sweat-activated polyaniline/single-wall carbon nanotube||Zinc(PANI/SWCNTs||Zn)battery fabric featuring multiple redox states.This innovative battery achieves a high open-circuit voltage of 1.2 V within 1.0 s and boasts an impressive power density of 2.5 mW cm^(-2)due to the rapid solid–liquid two-phase electronic/ionic transfer interface.In-depth characterization reveals that the discharge mechanism involves the reduction of emeraldine salt to leucoemeraldine without oxygen reduction.By integrating this system seamlessly,the sweat-activated batteries can directly power a patterned light-emitting diode and a multiplexed sweat biosensor,while wire-lessly transmitting data to a user interface via Bluetooth.This strategic design offers safety warnings and continuous real-time health monitoring for night walking or running.This work paves the way for the development of an efficient and sustainable energy-autonomous electronic fabric system tailored for individual health monitoring.展开更多
The importance of continuous healthcare management has significantly accelerated the development of wearable devices for monitoring health-related physical and biochemical markers. Despite extensive research on wearab...The importance of continuous healthcare management has significantly accelerated the development of wearable devices for monitoring health-related physical and biochemical markers. Despite extensive research on wearable devices for physiological and biochemical monitoring, critical issues of power management and device/skin interfacial properties restrict the advancement of personalized healthcare and early disease detection. Here, we report a multimodal sweat monitoring device featuring a real-time display and long-term data analysis based on self-powered format of sweat-activated batteries (SABs). The polyvinyl alcohol-sucrose (PVA-Suc) hydrogel serves as the key component for the SAB, offering not only great long-term adhesive properties for conformable wearability but also significant power generation capabilities. A maximum current density of 44.06 mA cm^(−2) and a maximum power density of 21.89 mW cm^(−2) can be realized for the hydrogel based SAB. The resulting device integrates an advanced colorimetric and electrochemical sensor array to measure pH levels, glucose concentrations, and chloride ion levels in human sweat, with data wirelessly transmitted by Near Field Communication. The self-powering features and multiple mode sensing function offer sufficient power to support real-time monitoring of metabolic biomarkers in sweat, with the ability to visually observe changes in the colorimetric sensors for long-term data monitoring.展开更多
基金supported by the National Natural Science Foundation of China no.T2188101,Gusu’s young leading talent(ZXL2021449)Key industry technology innovation project of Suzhou(SYG202108).
文摘The rapid advancement of personalized healthcare brings forth a myriad of self-powered integrated sweat fabric systems.However,challenges such as alkaline by-products,low open-circuit voltage and output power have made them unsuit-able for the continuously powering biosensors.Here,we have designed a sweat-activated polyaniline/single-wall carbon nanotube||Zinc(PANI/SWCNTs||Zn)battery fabric featuring multiple redox states.This innovative battery achieves a high open-circuit voltage of 1.2 V within 1.0 s and boasts an impressive power density of 2.5 mW cm^(-2)due to the rapid solid–liquid two-phase electronic/ionic transfer interface.In-depth characterization reveals that the discharge mechanism involves the reduction of emeraldine salt to leucoemeraldine without oxygen reduction.By integrating this system seamlessly,the sweat-activated batteries can directly power a patterned light-emitting diode and a multiplexed sweat biosensor,while wire-lessly transmitting data to a user interface via Bluetooth.This strategic design offers safety warnings and continuous real-time health monitoring for night walking or running.This work paves the way for the development of an efficient and sustainable energy-autonomous electronic fabric system tailored for individual health monitoring.
基金Research Grants Council,University Grants Committee,Grant/Award Numbers:11211523,11213721,11215722,RFS2324-1S03National Natural Science Foundation of China,Grant/Award Number:62122002City University of Hong Kong,Grant/Award Numbers:9667199,9667221,9667246,9680322。
文摘The importance of continuous healthcare management has significantly accelerated the development of wearable devices for monitoring health-related physical and biochemical markers. Despite extensive research on wearable devices for physiological and biochemical monitoring, critical issues of power management and device/skin interfacial properties restrict the advancement of personalized healthcare and early disease detection. Here, we report a multimodal sweat monitoring device featuring a real-time display and long-term data analysis based on self-powered format of sweat-activated batteries (SABs). The polyvinyl alcohol-sucrose (PVA-Suc) hydrogel serves as the key component for the SAB, offering not only great long-term adhesive properties for conformable wearability but also significant power generation capabilities. A maximum current density of 44.06 mA cm^(−2) and a maximum power density of 21.89 mW cm^(−2) can be realized for the hydrogel based SAB. The resulting device integrates an advanced colorimetric and electrochemical sensor array to measure pH levels, glucose concentrations, and chloride ion levels in human sweat, with data wirelessly transmitted by Near Field Communication. The self-powering features and multiple mode sensing function offer sufficient power to support real-time monitoring of metabolic biomarkers in sweat, with the ability to visually observe changes in the colorimetric sensors for long-term data monitoring.
