ADVANCED MATERIALS
·
2024
·Vol. 36
·期 31
·2404761
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IF 27.4
Tianxiang Lan,Hongmiao Tian,Xiaoliang Chen,Xiangming Li,Chunhui Wang,Duorui Wang,Sheng Li,Gangqiang Liu,Xinkai Zhu,Jinyou Shao
Long-term continuous monitoring (LTCM) of physiological electrical signals is an effective means for detecting several cardiovascular diseases. However, the integrated challenges of stable adhesion, low impedance, and robust durability under different skin conditions significantly hinder the application of flexible electrodes in LTCM. This paper proposes a structured electrode inspired by the treefrog web, comprising dispersed pillars at the bottom and asymmetric cone holes at the top. Attachment structures with a dispersed pillar improve the contact stability (adhesion increases 2.79/13.16 times in dry/wet conditions compared to an electrode without structure). Improved permeable duct structure provides high permeability (12 times compared to cotton). Due to high adhesion and permeability, the electrode's durability is 40 times larger than commercial Ag/AgCl electrodes. The treefrog web-like electrode has great advantages in permeability, adhesion, and durability, resulting in prospects for application in physiological electrical signal detection and a new design idea for LTCM wearable dry electrodes.
研究领域:
生物医学工程
·
材料科学
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Fangfei Zhang,Junzhu Lin,Mingwan Yang,Yun Wang,Zhicheng Ye,Jiajun He,Jie Shen,Xuechang Zhou,Zhiguang Guo,Yabin Zhang,Ben Wang
Face masks with multiple functionalities and exceptional durability have attracted increasing interests during the COVID-19 pandemic. How to integrate the antibacterial property, comfortability during long-time wearing, and breath monitoring capability together on a face mask is still challenging. Here we developed a kind of face mask that assembles the particles-free water-repellent fabric, antibacterial fabric, and hidden breath monitoring device together, resulting in the highly breathable, water-repellent, and antibacterial face mask with breath monitoring capability. Based on the rational design of the functional layers, the mask shows exceptional repellency to micro-fogs generated during breathing while maintaining high air permeability and inhibiting the passage of bacteria-containing aerogel. More importantly, the multi-functional mask can also monitor the breath condition in a wireless and real-time fashion, and collect the breath information for epidemiological analysis. The resultant mask paves the way to develop multi-functional breath-monitoring masks that can aid the prevention of the secondary transmission of bacteria and viruses while preventing potential discomfort and face skin allergy during long-period wearing.
研究领域:
材料科学
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生物医学工程
·
公共卫生
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Jianan Chen,Yang Wang,Wenjing Xu,Xiang Wu,Qi Bao,Lijun You,Caihua Xiong,Shaoyun Wang
Conductive hydrogels have attracted immense interest in the field of flexible electronic devices and biosensors. However, issues such as poor breathability, insufficient adhesion and water retention properties still remain and limit their applications as wearable sensors. To address these issues, a porous conductive hydrogel (SA/PAM/CTAB-GO) with high breathability (5.97 mg.cm −2 ·h −1 ), favorable conductivity (2.85 S/m), desirable adhesion (1.39 KPa) and moisture retention properties was synthesized by polymerization and crosslinking using sodium alginate and polyacrylamide as gel substrates, cetyltrimethylammonium bromide modified graphene oxide as foam stabilizer and Ca 2+ as crosslinking agent. The hydrogel exhibited excellent mechanical properties, water retention characteristics, and high breathability comparable to cotton. Moreover, the SA/PAM/CTAB-GO hydrogel presented excellent sensing sensitivity, fast response ability (225 ms), and favorable endurance, which monitored human motions sensitively and realized the accurate, sensitive and reliable detection of human ECG and EMG signals. The hydrogel sensor was applied in human-computer interaction and sensitively controlled robot arms and virtual characters. The design of dual network mechanism of calcium crosslinking and foam porosity method improved the sensing properties, breathability, adhesion, and stability of the hydrogel making it possesses high performance as wearable sensor and has promising application prospect in flexible electronics.
研究领域:
材料科学
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生物医学工程
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柔性电子
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DOI
PubMed
高影响因子
JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION
·
2014
·
IF 1.357
Yongli Shi,Yue Li,Jianming Wu,Weiguo Wang,Anjie Dong,Jianhua Zhang
Transdermal drug delivery systems (TDDS) had achieved significant success in medical practice, but still suffered from adhesion failure and skin reaction due to the occlusive properties of hydrophobic pressure sensitive adhesives (PSAs). In order to solve these problems, a novel TDDS patch based on self-adhesive Janus nanofibrous film was prepared by a multilayered electrospinning. This multifunctional patch was a bilayer structure. The subjacent layer was a hydrophobic and adhesive fibrous layer electrospun from polyacrylate PSA (HPSA), and the upper backing layer was a hydrophilic cross-linked poly (vinyl alcohol) (c-PVA) nanofibrous film. The structures of the HPSA/c-PVA composite fibrous films were characterized and their application properties, including adherence performance, water vapor permeability, water-penetration, release characteristics, and skin irritation were evaluated. The results indicated that the HPSA/c-PVA composite fibrous films could provide suitable adhesive properties for TDDS application, excellent capacity for drug loading and release, aesthetical appearance and high safety for use on the skin. Especially, due to the nanofibrous network structures and the hydrophobic–hydrophilic wettability gradient from hydrophobic HPSA layer to the hydrophilic c-PVA layer, the Janus films possessed high breathability and monodirectional water-penetration. Water could penetrate from the hydrophobic to the hydrophilic side, but could not permeate through in the opposite direction. This may provide a feasible solution to the problems caused by the water, sweat, or wound exudate on the skin, when the hydrophobic PSAs were used as matrix for TDDS and wound dressing patches.
研究领域:
材料科学
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药剂学
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生物医学工程
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DOI
PubMed
高影响因子
Nano-Micro Letters
·
2025
·Vol. 17
·期 1
·1-16
·
IF 36.3
Meng Na,Hu Yuen,Zhang Yufei,Cheng Ningbo,Lin Yanyan,Ding Chengfeng,Chen Qingyu,Fu Shaoju,Li Zhaoling,Wang Xianfeng,Yu Jianyong,Ding Bin
Highly permeable protective textiles (HPPT) with micro/nano-networks were fabricated using a non-solvent induced phase separation, synergistically driven by CaCl 2 and fluorinated polyurethane, combined with spraying technique.
The optimized HPPT exhibited excellent liquid repellency and air-moisture permeability properties due to the integration and cooperative drive of the low surface energy and the pore structure of the connectivity network, which can be used as desirable protective materials.
The formation mechanism of micro/nano-network structure was analyzed by molecular dynamics and observed by dynamic phase transition behavior, which numerically combined with theory illustrate the phase transition mechanism of HPPT.
研究领域:
材料科学
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纺织工程
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医疗防护
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表面化学
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）