ACS Sensors
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2025
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IF 9.1
Yunna Hao,Wei Ren,Qun Zhou,Bin Wang,Hongfang Liu,Peihua Zhang,Ranran Wang,Xiaohong Qin,Liming Wang,Yin Cheng
The intrinsic elastic resilience, fatigue resistance, and self-adhesion of human skin are highly desired merits. However, they are challenging to combine into a single mechanoreceptive electronic skin for healthcare monitoring and humanoid soft robots. We introduce an elastically resilient, crack-tolerant, amphibiously adhesive, and strain-sensitive electronic skin (ERCAS-skin) featuring a hierarchical and gradient design. ERCAS-skin has a skin-like binary structure of a carbon nanotube-coated thermoplastic polyurethane nanofibrous scaffold embedded in a gradient cross-linking polydimethylsiloxane (PDMS) matrix. The binary structure endows ERCAS-skin with mechanical compliance (Young’s modulus of 2.4 MPa) and crack tolerance (fatigue threshold of 1285 J m–2) through a matrix-to-scaffold stress transfer. The gradient cross-linking PDMS ensures not only high elastic resilience (recovery of 95%) but also strong wet adhesion (0.76 N cm–1) through a synergistic hydrophobic chain mobility effect. The crack generation mechanism of the embedded carbon nanotube polyurethane enables high sensitivity and a wide strain-sensing range. Owing to its excellent strain-sensing capability, ERCAS-skin was utilized as a self-adhesive strain sensor for hand gesture recognition both in the air and under water and as a fatigue-free motion sensor for robotic fish monitoring.
研究领域:
生物医学工程
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材料科学
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机器人技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMISTRY OF MATERIALS
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2016
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IF 9.407
Jun-Cheng Zhang,Yun-Ze Long,Xu Yan,Xusheng Wang,Feng Wang
Recoverable mechanoluminescence (ML), characterized by nondestructive and repetitive luminescence in response to a mechanical stress, has shown considerable promise in a variety of practical applications including lighting and display, as well as stress sensing and imaging. However, the progress in utilizing ML processes has been constrained by the difficulties in developing new ML materials and in ascertaining ML mechanism. In this paper, we report a new strategy to constructing recoverable ML materials by doping piezoelectric hosts with luminescent lanthanide ions, which simultaneously create luminescent centers and carrier traps in the host lattice. The viability of the strategy has been confirmed by assessing a series of Pr3+ activated calcium niobates composed of mCaO·Nb2O5 (m = 1, 2, and 3). Furthermore, systematical characterizations of the series of calcium niobates also reveal an unusual host dependent ML phenomenon. Our results are expected to expand the scope of designing ML materials and to deepen our understanding of ML mechanism, thereby promoting further utilization of recoverable ML.
研究领域:
材料科学
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光学
✓ 已验证
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
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2017
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IF 4.9
Zheng-Zhe Zhang,Ya-Fei Cheng,Lian-Zeng-Ji Xu,Yu-Hui Bai,Jia-Jia Xu,Zhi-Jian Shi,Qian-Qian Zhang,Ren-Cun Jin
The increasing use of engineered nanoparticles (NPs) in consumer and industrial products raises concerns about their environmental impacts, but their potential influence on anaerobic ammonium oxidation (anammox) process in wastewater treatment remains unknown. In this study, the response of granule-based anammox reactor to different loads of ZnONPs was investigated. The introduction of 1–5 mg L − 1 ZnONPs did not affect reactor performance, but 90% of the nitrogen removal capacity was deprived by a shock of 10 mg L − 1 ZnONPs within 3 days. Anammox activity was significantly inhibited, but no significant stimulation of intracellular reactive oxygen species (ROS) production or extracellular lactate dehydrogenase (LDH) activity was observed. The inhibition was thus mainly due to the accumulation of toxic Zn(II) ions in anammox biomass. However, the resistance and resilience of this anammox reactor to ZnONPs were enhanced by intermittent perturbations in the mode of “shock-recovery”. The up-regulated abundance of Zn(II)-exporter ZntA might contribute to the enhanced resistance. In addition, these repeated transient disturbances improved the functional specificity of the anammox community despite the reduction of its diversity. Overall, these results may provide useful references for evaluating and controlling the risk of NPs to anammox process.
研究领域:
环境科学
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微生物学
✓ 已验证
DOI
PubMed
高影响因子
ADVANCED MATERIALS
·
2024
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IF 27.4
Xue Liu,Xinyi Ji,Rongjie Zhu,Jianfeng Gu,Jiajie Liang
Stretchable ionic hydrogels with superior all-round properties that can detect multimodal sensations with excellent discriminability and robustness against external disturbances are highly required for artificial electronic skinapplications. However, some critical material parameters exhibit intrinsic tradeoffs with each other for most ionic hydrogels. Here, a microphase-separated hydrogel is demonstrated by combining three strategies: (1) using of a low crosslinker/monomer ratio to obtain highly entangled polymer chains as the first network; (2) the introduction of zwitterions into the first network; (3) the synthesis of an ultrasoft polyelectrolyte as the second network. This all-round elastic ionic hydrogel exhibits a low Young's modulus (< 60 kPa), large stretchability (> 900%), high resilience (> 95%), unique strain-stiffening behavior, excellent fatigue tolerance, high ionic conductivity (> 2.0 S m⁻ 1 ), and anti-freezing capability, which have not been achieved before. These properties allow the ionic hydrogel to operate as a stretchable multimodal sensor that can detect and decouple multiple stimuli (temperature, pressure, and proximity) with excellent discriminability, high sensitivity, and strong sensing-robustness against strains or temperature perturbations. The ionic hydrogel sensor exhibits great potential for intelligent electronic skin applications such as reliable health monitoring and accurate object identification.
研究领域:
材料科学
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电子学
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生物医学工程
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传感器
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED MATERIALS
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2024
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IF 27.4
Qingquan Han,Xigang Gao,Chao Zhang,Yajie Tian,Sen Liang,Xin Li,Yafeng Jing,Milin Zhang,Anhe Wang,Shuo Bai
Conducting polymer hydrogels have gained attention in the bioelectronics field due to their unique combination of biocompatibility and customizable mechanical properties. However, achieving both excellent conductivity and mechanical strength in a hydrogel remains a significant challenge, primarily because of the inherent conflict between the hydrophobic nature of conducting polymers and the hydrophilic characteristics of hydrogels. To address this issue, this work proposes a simple one-step acid-induced approach that not only promotes the gelation of hydrophilic polymers but also facilitates the in situ phase separation of hydrophobic conducting polymers under mild conditions. This results in a distinctive bi-continuous phase structure with exceptional electrical property (906 mS cm −1 ) and mechanical performance (fracture strain of 1103%). The hydrogel forms robust percolating networks that maintain structural integrity under mechanical stress due to their entropic elasticity, providing remarkable strain insensitivity, low mechanical hysteresis, and an impressive resilience (95%). Electrodes fabricated from the conductive hydrogel exhibit stable and minimal interfacial contact impedance with skin (1–6 kilohms at 1–100 Hz) and significantly lower noise power (4.9 µV 2 ). This work believes that the motion-insensitive characteristics and mechanical robustness of this hydrogel will enable efficient and reliable monitoring of biological signals, establishing a new benchmark in the bioelectronics.
研究领域:
生物电子学
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材料科学
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聚合物化学
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电化学
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生物材料
✓ 已验证
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）