Guar gum-based multilayer fiber membranes inspired by plant transpiration for enhancing the functionality of dry facial masks

Zhang, Yihang; Guo, Jing; Guan, Fang; Song, Xuecui; Yang, Qiang; Ji, Xinbin; Li, Zheng; Tao, Jing

doi:10.1016/j.ijbiomac.2023.125965

Cited by 2 publications

(1 citation statement)

References 28 publications

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“…However, on-demand and in situ sweat analysis using textile sensors during sedentary states of the human body remains a prominent challenge because of the poor secretion rate, inefficient collection, and rapid sweat evaporation. − Temperature-dependent studies of sweat secretion have shown that the threshold temperature for thermal stimulation is 40 °C . Wearable Joule thermal textiles have been used in wearable devices to control skin temperature. − Joule-heated textiles can potentially be used as textile sensors’ heating elements for promoting sweat production in sedentary individuals. − Most textile sensors lack microfluidic modules and can only passively and randomly collect the sweat sample, which suffers from high sweat sample volume, poor anti-interference performance, and low long-term stability. ,− Fluid systems with these characteristics can be found in nature. , Natural porous networks with smooth mass transfer behavior, often referred to as Murray networks, have been observed in plant stems and leaf veins. − Evolution through natural selection has endowed rhizomes in the plant with a naturally porous network with asymmetric porosity and wettability to sustain life in hot and arid environments (Figure a). − The specific porous networks and wettability differences minimize resistance for directional water transport and promote water collection for drought tolerance. − Sweat-conducting devices with controlled directional fluid transport behavior based on Murray’s law effectively avoid evaporation and dilution of trace sweat and skin contamination. ,, Therefore, further optimizing the structure of textile sensors by integrating heating elements and bionic microfluidic networks with directional water transport behavior is an excellent solution for simultaneous sweat generation, collection, and retention. , …”

Section: Introductionmentioning

confidence: 99%

Microfluidic Sensing Textile for Continuous Monitoring of Sweat Glucose at Rest

Zhao,

Zhang,

Deng

et al. 2024

ACS Appl. Mater. Interfaces

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Wearable sweat sensors have received considerable attention due to their great potential for noninvasive continuous monitoring of an individual's health status applications. However, the low secretion rate and fast evaporation of sweat pose challenges in collecting sweat from sedentary individuals for noninvasive analysis of body physiology. Here, we demonstrate wearable textiles for continuous monitoring of sweat at rest using the combination of a heating element and a microfluidic channel to increase localized skin sweat secretion rates and combat sweat evaporation, enabling accurate and stable monitoring of trace amounts of sweat. The Janus sensing yarns with a glucose sensing sensitivity of 36.57 mA cm −2 mM −1 are embroidered into the superhydrophobic heated textile to collect sweat directionally, resulting in improved sweat collection efficiency of up to 96 and 75% retention. The device also maintains a highly durable sensing performance, even in dynamic deformation, recycling, and washing. The microfluidic sensing textile can be further designed into a wireless sensing system that enables sedentary-compatible sweat analysis for the continuous, real-time monitoring of body glucose levels at rest.

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Section: Introductionmentioning

confidence: 99%

Microfluidic Sensing Textile for Continuous Monitoring of Sweat Glucose at Rest

Zhao,

Zhang,

Deng

et al. 2024

ACS Appl. Mater. Interfaces

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Fluid Unidirectional Transport Induced by Structure and Ambient Elements across Porous Materials: From Principles to Applications

Huang,

Si,

2024

Advanced Materials

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Spontaneous or non‐spontaneous unidirectional fluid transport across multi‐dimension can occur under specific structural designs and ambient elements for porous materials. While existing reviews have extensively summarized unidirectional fluid transport on surfaces, there is an absence of literature summarizing fluid's unidirectional transport across porous materials. This review introduces wetting phenomena observed on natural biological surfaces or porous structures. Subsequently, it offers an overview of diverse principles and potential applications in this field, emphasizing various physical and chemical structural designs (surface energy, capillary size, topographic curvature) and ambient elements (underwater, under oil, pressure and solar energy). Applications encompass moisture‐wicking fabric, sensors, skincare, fog collection, oil‐water separation, electrochemistry, liquid‐based gating, and solar evaporators. Additionally, we have compiled significant principles and formulas from various studies to offer readers valuable references. Simultaneously, we critically assess potential advantages and challenges in these applications and present our perspectives.This article is protected by copyright. All rights reserved

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Guar gum-based multilayer fiber membranes inspired by plant transpiration for enhancing the functionality of dry facial masks

Cited by 2 publications

References 28 publications

Microfluidic Sensing Textile for Continuous Monitoring of Sweat Glucose at Rest

Microfluidic Sensing Textile for Continuous Monitoring of Sweat Glucose at Rest

Fluid Unidirectional Transport Induced by Structure and Ambient Elements across Porous Materials: From Principles to Applications

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