SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Pengfei Tang,Yongjie Liu,Youhong Tang,Hongping Zhang,Qingyuan Wang
Smart textile-based wearable devices show promising application prospects for detecting NH 3 concentrations in environmental and health monitoring. However, mechanical loads and aqueous environments during use can damage the interface between the textile fiber and the sensing layer, posing a challenge to the reliable performance of textile-based sensors. Herein, inspired by the adhesion chemistry of mussels, we report a fatigue-resistant, washable, and environmentally friendly smart textile (PANI-PDA-BF) for monitoring NH₃. This smart textile utilizes natural bamboo fiber (BF) cloth as the substrate, with a polydopamine (PDA) coating to enhance the bonding performance of the polyaniline (PANI) sensing layer to the bamboo fiber, thereby improving fatigue resistance and washability. Experimental results demonstrate that the sensitivity of PANI-PDA-BF only reduced by 11 % and 22 % after 10,000 tensile cycles and 30 min of washing deionized water, which is much lower than the 51 % and 48 % of PANI-BF (without PDA coating). Additionally, PANI-PDA-BF exhibits outstanding environmental-friendly due to the inherent biodegradation of PDA and BF. PANI-PDA-BF's exceptional NH 3 sensing performance, durability, and environmental-friendliness make it an up-and-coming candidate for NH 3 monitoring wearable devices.
研究领域:
材料科学
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环境监测
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Zhichong Liu,Kening Wan,Tianyi Zhu,Jixin Zhu,Jingsan Xu,Chao Zhang,Tianxi Liu
The construction of wearable piezoresistive sensors with high elasticity, large gauge factor, and excellent durability in a harsh high-temperature environment is highly desired yet challenging. Here, a lightweight, superelastic, and fatigue-resistant spongy conductor was fabricated via a sponge-constrained network assembly, during which highly conductive graphene and flame-retardant montmorillonite were alternatively deposited on a three-dimensional melamine scaffold. The as-obtained spongy conductor exhibited a highly deformation-tolerant conductivity up to 80% strain and excellent fatigue resistance of 10,000 compressive cycles at 70% strain. As a result, the spongy conductor can readily work as a piezoresistive sensor and exhibited a high gauge factor value of ∼2.3 in a strain range of 60–80% and excellent durability under 60% strain for 10,000 cycles without sacrificing its piezoresistive performance. Additionally, the piezoresistive sensor showed great thermal stability up to 250 °C for more than 7 days and sufficient flame-retardant performance for at least 20 s. This lightweight, superelastic, and flame-retardant spongy conductor reveals tremendous potential in human motion detection against a harsh high-temperature environment.
研究领域:
材料科学
·
传感器技术
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF NON-CRYSTALLINE SOLIDS
·
2025
·
IF 3.5
Yixian Wang,Xiaolei Dai,Yong Kong,Xiaodong Shen
To develop a thermal insulation material to withstand force-heat environment changes, flexible silica aerogels (FSAs) were synthesized via in situ co-condensation of methyltrimethoxysilane (MTMS) and dimethyl dimethoxysilicone (DMDMS). The reversible deformation increased with DMDMS/MTMS volume ratio (D/M), resulting from the crosslinking degree of the Si-O-Si network. FSA with a D/M of 8:12 (FSA-3) exhibited a reversible deformation of 90% and maintained structural integrality under extreme loads. The flexibility of FSA-3 was extremely stable during long-term compression-release cycle up to 10000 times, and its hydrophobicity was maintained under high temperature up to 300°C. FSA-3 maintained insulation performance well under force-heat coupling conditions, exhibiting a decrease of 2.7-6.7% with a strain of 20-60%. This study offers significant guidance towards the development of silica aerogels for thermal sealing in aircrafts and electric vehicles.
研究领域:
材料科学
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航空航天工程
·
电动汽车技术
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2020
·Vol. 8
·期 16
·7775-7783
·
IF 11.301
Lvye Dou,Xiaota Cheng,Xinxin Zhang,Yang Si,Jianyong Yu,Bin Ding
Industrial thermal energy management or space exploration requires thermal insulating materials with features of low thermal conductivity, low bulk density and robust mechanical properties. However, the use of traditional organic insulation materials is hampered by their poor fire resistance while inorganic insulation ones are either stiff or display a high thermal conductivity. Herein, we design and synthesize binary-network structured silica nanofibrous aerogels (BSAs) by in situ assembly of nanoporous silica aerogels on a cellular structured silica fibrous framework. The resulting BSAs can completely recover from 80% compressive strain, displaying temperature-invariant superelasticity and robust fatigue-resistance up to 100 000 compression-release cycles. Moreover, the unique binary-network structure provides BSAs with ultralow thermal conductivity (21.96 mW m−1 K−1), robust fire retardancy, and superior high-temperature thermal insulation performance. BSAs with a thickness of 20 mm are shown to protect bare hands placed on the opposite side, when directly exposed to butane blowtorch flame (∼1000 °C). These superior performances lead to their appealing practical application potential in energy management, thermal isolation or fire protection fields.
研究领域:
材料科学
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能源管理
·
热绝缘材料
✓ 已验证
产品关联
DOI
高影响因子
Materials Today
·
2022
·
IF 26.943
Lei Li,Chao Jia,Ying Liu,Ben Fang,Wenqing Zhu,Xiaoyan Li,Laura–Alena Schaefer,Ziwei Li,Fangshu Zhang,Xuning Feng,Naveed Hussain,Xiaoqin Xi,Dong Wang,Yuan–Hua Lin,Xiaoding Wei,Hui Wu
Ceramics are considered intrinsically brittle at room temperature , which is mainly attributed to the limited availability of crystallographic slips and pre-existing geometrical flaws. Moreover, the lack of flexibility has severely hindered many high-end applications of ceramic materials. Here, we produce ceramic sponges that are simultaneously ultra-light, elasto-flexible, thermally insulating, and can fully recover from large deformation with a near-zero Poisson's ratio . These spongy materials also possess superb fatigue resistance without the accumulation of damage or structural collapse for 10,000 large-scale compressive or buckling cycles. We demonstrate the exceptional flexibility is enabled by the elastic distortion of nanograin–glassy dual phase and the fiber bulking in open-cell three-dimensional structure. Moreover, these spongy materials possess superior temperature-invariant superelasticity from deep cryogenic temperatures (−196 °C) to high temperature (1500 °C). Our study not only developed mechanically reliable lightweight ceramics for numerous extreme applications, but also provided new theoretical insights into the origin of flexibility in polycrystalline ceramics.
研究领域:
材料科学
·
机械工程
·
陶瓷
·
纳米材料
·
先进材料
✓ 已验证
DOI
高影响因子
APL Bioengineering
·
2023
·Vol. 7
·期 3
·
IF 6
Wang Sinan,Chen Hongying,Huang Jinyi,Shen Sisi,Tang Zhengya,Tan Xiaoyan,Lei Dong,Zhou Guangdong
Regenerative cartilage replacements are increasingly required in clinical settings for various defect repairs, including bronchial cartilage deficiency, articular cartilage injury, and microtia reconstruction. Poly (glycerol sebacate) (PGS) is a widely used bioelastomer that has been developed for various regenerative medicine applications because of its excellent elasticity, biodegradability, and biocompatibility. However, because of inadequate active groups, strong hydrophobicity, and limited ink extrusion accuracy, 3D printed PGS scaffolds may cause insufficient bioactivity, inefficient cell inoculation, and inconsistent cellular composition, which seriously hinders its further cartilage regenerative application. Here, we combined 3D printed PGS frameworks with an encapsulated gelatin hydrogel to fabricate a PGS@Gel composite scaffold. PGS@Gel scaffolds have a controllable porous microstructure, with suitable pore sizes and enhanced hydrophilia, which could significantly promote the cells' penetration and adhesion for efficient chondrocyte inoculation. Furthermore, the outstanding elasticity and fatigue durability of the PGS framework enabled the regenerated cartilage built by the PGS@Gel scaffolds to resist the dynamic in vivo environment and maintain its original morphology. Importantly, PGS@Gel scaffolds increased the rate of cartilage regeneration concurrent with scaffold degradation. The scaffold was gradually degraded and integrated to form uniform, dense, and mature regenerated cartilage tissue with little scaffold residue.
研究领域:
组织工程
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生物医用材料
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再生医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2024
·Vol. 14
·期 6
·3748-3756
·
IF 3.9
BangSen Li,Wenya Zhu,Jinrui Liu,Shishu Sun,Yan Zhang,DaShuai Zhang,Chen Li,Jianjun Shi,Zaifeng Shi
A practical “grafting-from” strategy is described to grow photochromic polymer brushes bearing spiropyran (SP) functional groups on graphene oxide (GO) surfaces via surface-initiated ring-opening metathesis polymerization (SI-ROMP). The Grubbs II catalyst was fixed on the GO surface, and the norbornene derivatives functionalized using spiropyran were synthesized from this active site via the ROMP method. The results indicated that the spiropyran-modified polymer brushes were obtained on the GO surface in the form of thin films. The solubility of GO modified by spiropyran polymers (GO-SPs) in organic solvents was significantly improved. The GO-SPs exhibited excellent photochromic properties, including fast coloration/decoloration. The modified GO with an isomeric structure was colored in 90 s under ultraviolet irradiation and decolored in 360 s under white light. The fading kinetic rate in the dark was slow and the kinetic attenuation curve followed bi-exponential decay. The GO-SP composite materials took more than 2 h to return to thermodynamically stable forms. The reversible change in the water contact angle reached 8° after continuous cycling with ultraviolet and visible light. GO-SP maintained its photochromic performance and possessed excellent fatigue resistance after more than six successive UV/light cycles. This work describes a practical strategy for the preparation of photochromic polymer brush modified GO composite materials and extends the applications of GO in photochromic materials.
研究领域:
材料科学
·
聚合物化学
·
纳米技术
·
光化学
✓ 已验证
DOI
PubMed
高影响因子
Materials Today Nano
·
2023
·
IF 10.3
Jingwen Wang,Hu Liu,Xiaoyan Yue,Dianbo Zhang,Rui Yin,Hongling Sun,Chuntai Liu,Changyu Shen
With the rapid development of wearable electronics, conductive yarn strain sensors have attracted much attention due to their excellent flexibility, conformability, and knittability. However, it is still a great challenge to prepare flexible conductive yarn strain sensors with high sensitivity and wide working range simultaneously. Here, a large-scale fabrication of conductive spandex yarn (SY) with synergistic conductive coating composed of lower stable carbon nanotubes (CNTs)-polyaniline (PANi) hybrid layer and upper ultrasensitive cracked PANi layer was successfully achieved via the simple solvent swelling , non-solvent-induced phase separation (NIPS), and in-situ reduction processes. Thanks to the synergistic effect of the double layered conductive coating and its tunable microstructure based on the PANi content, the assembled conductive SY strain sensor exhibits wide working range (0–321 %), high sensitivity (GF is 43, 950, and 2439 for strain range of 0–100 %, 170–270 %, and 280–321 %, respectively), ultralow detection limit (0.5 %), fast response/recovery time (140 ms/160 ms), and excellent fatigue resistance (4000 cycles). As a proof of concept, the strain sensor can be used for wearable applications to achieve the effective detection of full-range human motion and physiologic signals. Besides, it also displays great potential in human-computer interaction for reliable operation of remote-control manipulator and flexible electronic textile for spatial pressure distribution identification. Finally, owing to the excellent optical absorbing ability of PANi and CNTs, the conductive SY exhibits high-efficient and stable photothermal conversion capacity even under the stretching and bending states, endowing it with good wearing comfort. This study provides a convenient but effective strategy for the fabrication of high-performance wearable strain sensor with excellent thermal management capacity.
研究领域:
材料科学
·
可穿戴技术
·
电子学
·
纳米技术
·
传感器
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）