Materials
·
2023
·Vol. 16
·期 14
·4941
·
IF 3.4
Wei Liu,Fubing Bao,Yinning Zhang,Jinqing Wang,Xiaoyu Liang
The brittle failure of ceramic coatings limits their application in many fields. To address this issue, a novel armoured ceramic coating was developed to suppress brittle failure. First, an interconnected frame microstructure was micromachined onto the surface of a mild steel substrate using a nanosecond laser. Subsequently, a polymer-derived ceramic slurry was sprayed and sintered to obtain an armoured ceramic coating. The laser-micromachined burr-like microstructure of the substrate facilitated adhesion between the coating and the substrate. The results of the mechanical properties test showed that the armoured coating could withstand more than 20 cycles of water-cooled thermal shock at 600 °C, and the peeling area of the armoured coating was approximately three times less than that of the unarmoured coating under a normal load of 1471 N. The laboratory and field corrosion test results indicated that at high temperatures, the corrosion resistance of the armoured coating was comparable with that of the unarmoured coating and was approximately 10 times higher than that of the uncoated sample. The proposed method will aid in suppressing the brittle failure of ceramic coatings and broaden their scope of application in different fields.Keywords:ceramic coatings;armour structure;brittle failure;corrosion resistance
研究领域:
材料科学
·
机械工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Small
·
2024
·Vol. 20
·期 51
·2406072
·
IF 13
Zhenda Liu,Dagui Wang,Wei Zhang,Shan Gao,Yang Shen,Zhenxu Shi,Binyang Lu,Dehui Wang,Xu Deng
Material surfaces maintaining a liquid super-repellent is crucial in fields such as anti-fouling, drag reduction, and heat transfer. Superhydrophobic surfaces provide an effective approach but suffer from phase change-induced wetting transitions, hindering their practical applications. In this work, Biphilic armored superhydrophobic surfaces (BASS) are designed by integrating hydrophilic interconnected surface frames with superhydrophobic nanostructures. The hydrophilic top of the frame provides spatial selectivity for condensate droplet nucleation, and superhydrophobic nanostructures enable staying dry. Further growth, coalescence, jumping, and roll-off of the condensate droplets on BASS, show remarkable resistance to phase change-induced wetting transition. It still maintains stable superhydrophobicity when exposed to 100 °C of steam for 240 h, at least two orders of magnitude improvement over traditional superhydrophobic surfaces. Such a designing BASS provides an effective approach to address the phase change-induced wetting transition, thereby extending the practical application in the fields of condensation heat transfer, anti-fouling, and fluid transportation of superhydrophobic surfaces.
研究领域:
材料科学
·
界面科学
✓ 已验证
DOI
高影响因子
ADVANCED MATERIALS
·
2025
·
IF 26.8
Yuyang Sun,Tao Chen,Dongsheng Li,Hanyang Li,Tianci Ji,Fengxia Wang,Lining Sun,Chengkuo Lee,Huicong Liu
Colonoscopic continuum robots often lack sensing capabilities, risking tissue damage. An ideal robot electronic skin should offer full-body coverage, multiplexing, stretchability, and multifunctionality, but integration is challenging due to the robot's elongated structure. This work presents a stretchable electronic armor (E-armor) with a 3D crosslinked structure that enables 300 mm full coverage while accomplishing multiplexed simultaneous tactile and strain sensing through bioinspired artificial synapse mechanisms. The E-armor integrates 48 tactile sensing points through bilayer co-electrode strategy, reducing wiring while combining triboelectric encoding intelligence with innovative stretchable triboelectric interlinked films (TIFs) to form a triboelectric artificial synapse that generates digitally encoded signal pairs upon contact. A convolutional neural network and long short-term memory network (CNN-LSTM) deep learning framework achieve 99.31% accuracy in identifying multi-point tactile signals. A sodium alginate/polyacrylamide/sodium chloride (SA/PAM/NaCl) conductive hydrogel serves as a strain sensing element, providing excellent stretchability and biocompatibility, and allowing precise inference of bending angles at 12 strain sensing edges. A compliance control strategy coordinates tactile and strain signals to autonomously adjust continuum robot postures while ensuring smooth operation. The digital twin-based 3D visualization interface enhances human–robot interaction by digitally reconstructing both tactile and strain feedback, enabling real-time visualization of the continuum robot's intracolonic posture.
研究领域:
生物医学工程
·
机器人学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Jing Xue,Yongzhao Hou,Wei Chu,Zhongya Zhang,Zhichao Dong,Lijuan Zhang,Guangwu Wen
B 4 C ceramic holds enormous application potential in the lightweight armors. In order to simplify the design of armor materials, 3D printed B 4 C-based honeycomb ceramic via DIW technique with high solid content were fabricated using printing ink with B 4 C powder, BYK-2070 dispersant, BAC solvent, PSZ adhesive and DCP cross-linking agent. The role of each constituent and the printing parameters of such honeycomb ceramic were investigated. In addition, epoxy resin was employed to impregnate PSZ-modified B 4 C-based honeycomb ceramic to prepare three-dimensional structure hybrid composites with excellent mechanical strength (172 MPa of flexural strength, 4.95 KJ/m 2 of impact strength) and physiochemical properties (7.52 % of open porosity, 5.5 % of water absorption, 1.35 g/cm −1 of density, and 5.2 GPa of hardness). The exceptional performances of the three-dimensional structure hybrid composite come from the bioinspired structure design, new chemical bonds (such as the formation of B–C, C–N and Si–B bonds) formed in the ceramic material and cross-linking reaction occurred during curing between epoxy resin and PSZ. The findings in this study provide an effective strategy for the fabrication of B 4 C-based composites with controllable structures and mechanical performances and exhibit the potential application in complex armor structures.
研究领域:
材料科学
·
国防工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2019
·
IF 7.015
Yawei Liu,Chao Liu,Xin Fu,Oukai Lin,Ziqiao Wang,Chao Wang,Chunhua Zhang
Improvement of anti-chlorine and anti-bacterial properties of membranes has been a major challenge in desalinating process. In this paper, zero-dimension cage-like structure polyhedral oligomeric silsesquioxane (POSS) was in situ armored on the surface of polyamide (PA) membrane and acted as ‘armors’ to prevent active chlorine corrosion and bacterial fouling. PA/POSS hybrid membranes could be easily achieved through a simple two-step interfacial polymerization. Anti-chlorine and anti-bacterial properties of PA/POSS hybrid membranes significantly improved during desalination by tuning the content of POSS ‘armors’. Salt rejection reached approximately 98% after immersing PA/POSS hybrid membranes in the active chlorine solution for 24 h, which showed excellent anti-chlorine property. In addition, the anti-bacterial property of PA reverse osmosis (RO) membranes extremely enhanced after armoring with POSS nanoparticles . This finding demonstrated that the structure and chemical inert nature of POSS enabled PA/POSS membranes to block active chlorine and bacteria. PA/POSS membranes provided a promising approach to improve membrane desalination.
研究领域:
材料科学
·
化学工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Jingcheng Wu,Yi He,Peng Zhou,Shuangshuang Li,Shuting Tian
Bioinspired multifunctional polyphenols coatings have been widely applied in the field of oily sewage treatment. However, shortcomings, such as lengthy reaction times and poor stability, hinder large-scale applications of these coatings. Herein, a tunicate-inspired polyphenol-mediated ultrafast biomimetic mineralization strategy was proposed to ingeniously integrate prominent oil resistance, excellent chemical stability, and satisfactory durability in combination with the construction of robust nanoarmors on polyvinylidene fluoride (PVDF) membranes. Poly-gallic acid (PGA) adhesive coatings and TiO 2 nanoparticles are uniformly integrated to construct nanoarmors via stable coordination interactions between titanium and carboxylate groups and the chelation of metal ions and polyphenols. The presence of nanoarmors not only reinforced the stability of the PGA adhesive coatings but also created a reliable oil-repellent barrier on the PVDF membrane surface with almost no oil adhesion (able to resist crude oil pollution). The innermost PGA adhesive coatings strongly adhered to the PVDF membrane substrates and functioned as a “primer” layer for biomimetic mineralization. The outermost TiO 2 nanoparticles can form a firm hydration layer, endowing the PVDF membranes with excellent oil resistance even under harsh corrosive environments (1 M HCl, 1 M NaOH, and 2 M NaCl). In addition to neutral emulsions, the as-prepared membrane can also separate oil-in-corrosive water emulsions, including salty, acidic (pH = 1), and alkaline (pH = 13) sewage, with a permeate flux higher than 3200 L m −2 h −1 bar −1 and an oil rejection ratio above 99.1 %. Therefore, tunicate-inspired PVDF membranes have broad application prospects in resource recycling and aquatic environment protection.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-9
·
IF 14.7
Wang Jinpei,Song Yuxin,Yu Fanfei,Zeng Yijun,Wu Chenyang,Qin Xuezhi,Peng Liang,Li Yitan,Zhou Yongsen,Tao Ran,Liu Hangchen,Zhu Hong,Sun Ming,Xu Wanghuai,Zhang Chao,Wang Zuankai
Body heat, a clean and ubiquitous energy source, is promising as a renewable resource to supply wearable electronics. Emerging tough thermogalvanic device could be a sustainable platform to convert body heat energy into electricity for powering wearable electronics if its Carnot-relative efficiency ( η r ) reaches ~5%. However, maximizing both the η r and mechanical strength of the device are mutually exclusive. Here, we develop a rational strategy to construct a flexible thermogalvanic armor (FTGA) with a η r over 8% near room temperature, yet preserving mechanical robustness. The key to our design lies in simultaneously realizing the thermosensitive-crystallization and salting-out effect in the elaborately designed ion-transport highway to boost η r and improve mechanical strength. The FTGA achieves an ultrahigh η r of 8.53%, coupling with impressive mechanical toughness of 70.65 MJ m −3 and substantial elongation (~900%) together. Our strategy holds sustainable potential for harvesting body heat and powering wearable electronics without recharging.
研究领域:
材料科学
·
可穿戴电子设备
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能源转换
·
热电技术
✓ 已验证
DOI
高影响因子
Science Advances
·
2025
·Vol. 11
·期 15
·
IF 12.5
Guoqing Chen,Jiabin Wu,Zhenwu Wang,He Zhu,Shiping Zhu,Qi Zhang
Unpreferable vibrations and impacts pose substantial risks to sensitive devices, structures, and the human body, demanding materials capable of providing both high energy dissipation and impact protection across a broad temperature range. Traditional damping materials often fail to meet these demands because of a trade-off between damping and mechanical strength. We introduce an innovative strategy to fabricate armored polymer-fluid gels (APFGs) that combine high damping and high modulus for effective damping and impact protection under extreme conditions. By using a controlled surface cross-linking process through diffusion, we greatly enhance the mechanical strength of polymer-fluid gels without sacrificing their damping capabilities. This asymmetric design results in an unprecedented loss factor (tanδ > 0.5 from −45 degrees to 135 degrees Celsius, peaking at tanδ = 2.2) while achieving a tensile modulus of 20 megapascals. This method resolves the long-standing damping-modulus trade-off, positioning APFGs as promising candidates for robust damping and impact protection in electronics and human motion applications.
研究领域:
材料科学
·
工程学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Bionic Engineering
·
2023
·Vol. 20
·期 5
·1891-1904
·
IF 4
Wang Peng,Zhao Hui,Zheng Boyuan,Guan Ximei,Sun Bin,Liao Yongli,Yue Ying,Duan Wei,Ding Haimin
It has been proved that the construction of interconnected armour on superhydrophobic surface could significantly enhance the mechanical robustness. Here, a new kind of armour with frame/protrusion hybrid structure was achieved by nanosecond laser technology. Then, this armoured superhydrophobic surface demonstrated excellent durability, which could withstand linear abrasion (~ 3 N press) 800 cycles, water jet test (1.0 MPa pressure) 40 times and 100 °C treatment 18 days. Particularly, the armoured superhydrophobic sample shows outstanding anti-icing ability, which can speed up the supercooled water dropping (no adhesion within 2 h), increase the freezing delay time by ~ 3 times and maintain low adhesion force (less than 35 kPa) after 30 icing/de-icing cycles. Further finite element analysis and theoretical modeling proved that the developed frame/protuberance hybrid structure could effectively enhance the durability. The relatively low surface accuracy in this study can significantly reduce processing cost, which provides a bright future for the practical application of armour superhydrophobic materials.
研究领域:
材料科学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Jun-Yue Li,Xin-Kai Qian,Qi-Ye Wang,Hong-Chao Sun,Xiu-Juan Li,Zhen-Yu Zhang,Chao-Ran Huang,Rui Guo,Fei Xiu,Ju-Qing Liu
Stretchable electroluminescent devices possess ultra-high adaptability to versatile geometries owing to their intrinsically soft components, holding huge potential for future flexible and wearable electronics. However, the utilization of existing devices in harsh environments is greatly restricted by lack reliability, stemming from their vulnerability to solvent exposure and mechanical damage. In this study, we present a 2-hydroxyethylacrylate-acrylic acid gel (HAG)/silicone armor for durably stretchable electroluminescence device by a lamination method. With the synergy of mechanical strength and chemical inertness, the armors possess stab resistance, solvent stability and optical transparency. By laminating two armors with an elastomeric emitter, the multilayer-stacked elastomer exhibits uniform double side emission with a consistent brightness even under large deformation. Impressively, this device can operate stably in extremely harsh conditions, including solvent soaking of ammonia, water, acetic acid and mechanical shocking of impact, cutting, friction and puncture. Our armor design provides a reliable strategy for constructing stretchable electronics with outstanding durability.
研究领域:
材料科学
·
柔性电子学
·
工程学
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2025
·
IF 26.8
Jun Pang,Zhen-Bang Zhang,Ze-Yu Wang,Si-Chao Zhang,Shao-Meng Wen,Chen Cui,Huai-Ling Gao,Shu-Hong Yu
Ceramic materials are widely used in various protective equipment owing to their excellent mechanical properties and chemical stability, while their applications are limited by monotonous color and poor toughness. Inspired by the colorful and tough natural shells, nacre-mimetic alumina (Al 2 O 3 )-based (NMA) composites are fabricated by proposing a dual-oxide interface design strategy inspired by the hierarchical structure of natural nacre. The NMA composites achieve color regulation, providing possibilities for their application in camouflage protective armor. The fracture toughness of the optimal NMA composite is more than three times that of commercial Al 2 O 3 ceramic. Simultaneously, the NMA composites have obvious advantages in terms of impact resistance compared with Al 2 O 3 ceramic and polymer polymethyl methacrylate (PMMA). Additionally, the hierarchical structure of the NMA composites provides favorable structural conditions for transmission of electromagnetic (EM) waves at the frequency band of 18–26.5 GHz. These characteristics make the NMA composites potential protective materials for radar and communication equipment.
研究领域:
材料科学
·
仿生学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Science
·
2024
·Vol. 11
·期 33
·2403379
·
IF 14.3
Xuchao Wang,Zijing Zhang,Zhihua Liang,Haimin Yao
Traditional anti-impact armors and shields are normally made of stiff and hard materials and therefore deficient in flexibility. This greatly limits their applications in protecting objects with complex geometries or significant deformability. Flexible armors can be developed with the application of hard platelets and soft materials, but the lower rigidity of the flexible armors renders them incapable of providing sufficient resistance against impact attacks. To address the inherent conflict between flexibility and impact resistance in traditional armors, here, a composite is developed by hybridizing a shear-stiffening gel as the matrix and chemically-strengthened ultrathin glass sheets (CSGS) as the reinforcement. The resulting laminate, termed PCCL, exhibits both high flexibility and high impact resistance. Specifically, at low strain rates, the high ductility of the gel combined with the high flexural strength of the CSGS enables the PCCL to undergo considerable deformation; at high strain rates, on the other hand, the shear stiffening behavior of the gel matrix endows the PCCL with excellent impact resistance manifested by its high performance in energy absorption and high rigidity. With the combination of high flexibility and high impact resistance, the PCCL is demonstrated to be an ideal armor for protecting curved vulnerable objects from impact attacks.
研究领域:
材料科学
·
防护工程
✓ 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）