Small
·
2025
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IF 12.1
Chen Yang,Zhiguang Guo
Superhydrophobic surfaces are susceptible to structural deformation and damage during use, which significantly impacts their long-term stability and performance in anti-/de-icing applications. To address this challenge, a biomimetic superhydrophobic polyurethane film inspired by Xanthium strumarium (PBXS) is proposed. This film not only delivers efficient anti-/de-icing performance but also demonstrates exceptional long-term durability. Even when the surface structure undergoes deformation or complete fracture, it can quickly self-heal under near-infrared light, restoring its original properties. The results show that, due to the superhydrophobic micron spine array and photothermal effect, PBXS can delay droplet freezing at low temperatures (−10 °C, 2052 s) and enable rapid de-icing (1 sun, 187 s). Moreover, by incorporating the shape-memory properties of thermoplastic polyurethane and self-healing capability, PBXS effectively addresses issues related to surface deformation (after ten deformation-healing cycles, PBXS maintains a water contact angle of 157 ± 1° and a rolling angle of 15.4 ± 1°) and material rupture (after ten fracture-healing cycles, PBXS retains a water contact angle of 152 ± 1° and a rolling angle of 16.1 ± 1°). This innovative approach enhances the long-term performance of anti-/de-icing films and shows significant potential for applications in road transportation, power transmission lines, and other anti-/de-icing fields.
研究领域:
材料科学
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仿生学
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表面工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MACROMOLECULAR MATERIALS AND ENGINEERING
·
2019
·Vol. 305
·期 1
·1900539
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IF 3.038
Bo Wu,Yuan Lei,Yao Xiao,Yanjun Wang,Ye Yuan,Liang Jiang,Xi Zhang,Jingxin Lei
Utilization of bionics to develop stimuli responsive polymers that can heal damage with excellent restorability is particularly attractive for a sustainable society. Herein, inspired by chameleons, a hierarchical structural design strategy is proposed and illustrated to fabricate a healable photochromic material based on a self-healable polymeric matrix and a finely dispersed photochromic spirooxazine. The self-healable polymeric matrix is fabricated via the integration of multiple hydrogen bonds (H bonds) and covalent cross-links into a biomass-derived elastomer. The dynamic nature and soft characteristics enable the as-prepared elastomer superior extensibility as well as self-healing ability, while the covalent cross-links can assist the reassociation of ruptured H bonds. The representative elastomer exhibits an extensibility of 2600% and toughness of 42.76 MJ m −3 . Furthermore, it shows good self-healing ability with complete recovery of scratch as well as restoration against 1900% of elongation and 24.1 MJ m −3 of toughness after healing at 60 °C for 24 h. This combination of moderate toughness, good self-healing ability, and smart photochromic property in biomass-derived materials should largely improve their applicability, reliability, and sustainability in various materials and devices.
研究领域:
材料科学
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高分子化学
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仿生学
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
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2025
·
IF 19
Zhihui Chen,Xinge Yang,Qingyang Shao,Ruzhu Wang
Humidity control is crucial for applications such as green building design and equipment preservation. However, traditional dehumidification methods often suffer from limitations such as high energy consumption, poor scalability, or inefficient moisture transfer. Herein, inspired by the hierarchical porous microstructure in trees, a biomimetic sorbent monolith with vertically aligned channels and robust structure is fabricated through direct-ink-writing 3D printing technology for sorption-based dehumidification. Owing to abundant pore structure ranging from millimeter to micrometer scales, the monolith exhibits fast water uptake and facile regeneration. This study investigates its potential to achieve rapid dehumidification under a wide relative humidity (RH) range of 60–90%. One piece of monolith reduces the RH of a space 6750 times its own volume from 90% to below 60% in 25 min and maintains it with ultra-low energy consumption. Besides, the monolith fabricated by 3D printing is easy to be scaled up with low costs meeting the demands of large-scale production and practical deployment. It is expected that the monolith may fulfill diverse humidity needs while broadening the applications of 3D printing technology.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2019
·
IF 3.683
Zhonglin Cao,Tiansheng Gan,Gaixia Xu,Chunfeng Ma
Inspired by fish skin, biomimetic self-renewal poly[(ethylene oxide)-co-(ethylene carbonate)] (PEOC) brushes with protein resistance had been prepared via surface-initiated ring-opening polymerization (ROP). The results of hydrolytic degradation indicated that the PEOC brushes could degrade in artificial seawater. Ellipsometry, X-ray photoelectron spectrometry, and contact angle results demonstrated that the PEOC brushes degrade uniformly. By using a quartz crystal microbalance with dissipation, we studied the protein adsorption on the surfaces in artificial seawater at different degradation times. After 24, 48, 96, and 168 h of degradation, the PEOC surfaces showed nearly zero Δf and ΔD for bovine serum albumin, lysozyme, and fibrinogen. More importantly, there was a notably lower density of microorganisms adhered to the surface modified with PEOC compared with that of the surface without PEOC in natural seawater. The current study showed that the PEOC brushes exhibit a self-renewal property with persistent protein resistance and prevent the adhesion of microorganisms. Such a biomimetic polymer had a great potential in marine antibiofouling.
研究领域:
材料科学
·
生物医学工程
·
海洋科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Mingtian Xu,Zhengjie Xu,Zhijun Jiang,Wenwen Shao,Lihao Zhang,Yufei Chen,Zhixia Dong,Cihui Liu,Weixing Zhang,Xinjian Wan
Biliary stents (BS) play an important role in the field of modern interventional therapy. However, the surface of BS is easy to cause microbial attachment, which causes serious postoperative infections and threatens the life safety of patients. Here, inspired by the microstructures of Nepenthes alata ’s peristome surface and Morpho menelaus , we presented an excellent slippery surface for BS tips by employing inverse opal colloidal crystals hydrogels. The inverse opal structure not only imparts a tunable structural color to the slippery surface but provides sufficient room for liquid absorption, such as lubricants and drugs. The slippery liquid-infused porous surfaces (SLIPS) endow the slippery surface with anti-adhesion and antibacterial properties. Due to the good temperature sensitivity of hydrogels, we can control the drug release by changing the temperature. In particular, the drug release process can be monitored through visually structural color variations. Furthermore, we also proposed a mechanism of droplet infiltration on SLIPS under the heating which is expected to be used for the smart transport of droplets. The multifunctional SLIPS BS tips also exhibit good generalization, we believe it will bring more possibilities for biliary stents.
研究领域:
生物医学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Polymer Materials
·
2024
·
IF 4.4
Hongbo Zhao,Renjun Pei,Pei-Xi Wang
The teeth of limpets, consisting of orderly aligned hard goethite (iron oxyhydroxide) nanocrystals and flexible chitin microfibers, are one of the hardest and stiffest biomaterials found in nature. However, the replication of their composition and ordered microstructures to artificial biomimetic materials remains a challenge. Here, we fabricated large-sized limpet tooth analogues with hierarchically ordered structures by applying long-range orientational control to the short-scale self-assembly of hybrid colloidal liquid crystals formed by chitin nanocrystals and goethite nanorods. The obtained composite laminates exhibited excellent bending resistance compared to biomaterials, cement, and ceramics. These results suggest that the mass production of structurally ordered materials with high strength and toughness may be achieved by using lyotropic liquid crystals.
研究领域:
材料科学
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生物学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Guangyi Tian,Changhui Fu,Zhiguang Guo
Water scarcity is a global problem and collecting water from the air is a viable solution to this crisis. Inspired by Namib Desert beetle, leaf venation and spider silk, we designed an integrated biomimetic system with hybrid wettability and wettability gradient. The hybrid hydrophilic–hydrophobic wettability design that bionomics desert beetle’s back can construct a three-dimensional topography with a water layer on the surface, expanding the contact area with the fog flow and thus improving the droplet trapping efficiency. The venation-like structure with wettability gradient not only provides a planned path for water transportation, but also accelerates water removal under the synergistic effect of gravity and wettability driving force, thus further improving the surface regeneration rate. The collector combines droplet capture, coalescence, transportation, separation, and storage capabilities, which provides new ideas for the design of future high-efficiency fog collectors.
研究领域:
材料科学
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环境科学
·
生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Jia He,Yuming Zang,Huateng Li,Jia Guo,Changchun Wang
The proliferation of counterfeiting necessitates an urgent need for enhanced technique to safeguard the authenticity of sensitive items. Inspired by the elytra of Tmesisternus isabellae beetles, we designed a new synergistic humidity responsive photonic system (SHRPS) for security printing based on high quality photonic paper and active ink. The photonic paper itself is not sensitive to humidity; only the targeted areas activated by the active ink exhibit humidity responsiveness. We investigated factors influencing humidity responsiveness, including monomer composition, pH of active ink, and treatment period. We found the optimal monomer mixture contains 40% acrylic acid, and the active ink pH is 13. We also applied a scalable method to fabricate photonic paper, successfully overcome the challenge of large-scale fabrication of photonic crystals at room temperature. By integrating the perfect pair of SHRPS and inkjet printer, concealed information with various sizes and resolutions can be printed, invisible in ambient humidity and revealed by blowing air, presenting various humidity responsive ability of SHRPS for multilevel information encryption, which opens a new window for security printing system.
研究领域:
材料科学
·
光学
·
生物启发设计
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Ye Fu,Shulun Ai,Zhiguang Guo,Weimin Liu
By collecting water in the air, it is an important way to solve the problem of water shortage in arid and semi-arid areas. Improving the efficiency of fog harvesting is still a great challenge to be overcome. The use of 3D structure is an excellent strategy, here, a Multiple-biomimetic 3D hydrophilic and superhydrophobic fog harvester with a hump-valley structure was prepared by the combination of thermal processing and spraying. Inspired by biological water collection in nature, a 3D porous sponge surface with hydrophilic valley and superhydrophobic hump was obtained by two-step treatment. This surface structure showed excellent fog harvesting performance, which was 185 % higher than the original sponge. This structure accelerates the capture, transfer and transport of droplets during the fog harvesting process and greatly improves the efficiency of fog harvest. The results show that the chemical gradient and structural gradient actuation we constructed on the melamine sponge surface can effectively improve the fog collection efficiency. A surface with a linear hump-valley mixed wettability pattern is designed, and it is proved that fog collection efficiency can be effectively improved at the droplet capture and transfer stage and transport stage respectively. This study highlights a simple and cheap integrated fog harvester material design.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COMPOSITES PART B-ENGINEERING
·
2020
·
IF 7.635
Pengke Huang,Fei Wu,Bin Shen,Hao Zheng,Qian Ren,Haibin Luo,Wenge Zheng
Nowadays, the subject of wettability still has received little attention in the scientific literature, especially in the cellular solids , despite its significant role in the pervasiveness of the water treatment. Herein, inspired by the mussel, a green method was developed to construct nano-/micro-structures on the multi-structural polypropylene (like the dense solids, big hollow, small hollow and hierarchical open/closed-cell porous structure) by the surface-adherent polydopamine. Moreover, the relationship between both surface chemical and physical (such as pore structure and size) properties of the porous media , and wettability were studied. Besides, water–glycerol mixture solutions with various viscosities were used to study the spreading and imbibition behavior in the porous polypropylene foams, and the surface free energy of the different cellular solids (before and after modification) was estimated by Owens-Wendt equation. More interestingly, different kinds of the super-wetting materials like super-amphiphilic and hierarchical super-hydrophilic/super-hydrophobic, etc., were successful prepared. Both fundamental theoretical and numerical analysis were also conducted to reveal the mechanism of the penetration or surface repellency toward a drop, and to predict the transport of fluids in porous media. We believe that this work may serve as a source of inspiration in designing other advanced functional materials .
研究领域:
材料科学
·
表面化学
·
仿生工程
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Feifeng Hu,Guangyi Tian,Huayang Zhang,Zhiguang Guo
The shortage of freshwater resources has a great impact on the daily life of human beings, and fog collection has become an effective mitigation measure. In this paper, inspired by the nanofabricated desert beetle, honeycomb, Euphorbia antiquorum L. and cactus, a 3D fog collector combining a conical array structural gradient and a wettability gradient was presented, with special three-dimensional array structure (TA-L/B (PPC)) that ensures that the fog-collecting efficiency of the samples is virtually independent of the direction of the fog flow. The fog collection efficiency of sample TA-L/B (PPC) is close to 4.3 g·h −1 ·cm −2 , a value that is 1.77 times higher than the surface fog collection efficiency of the copper sheet (OS) sample. By rationally designing the surface structure of the sample, the fog circulation process is accelerated, and a sustainable and stable fog collection process is achieved.
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
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Jingxiu Chen,Jianzhang Mai,Chao Wang,Yanyan Lin,Dongyang Miao,Yongqiang Lin,Aijaz Ahmed Babar,Xianfeng Wang,Jianyong Yu,Bin Ding
Humidifying membranes with ultrafast water transport and evaporation play a vital role in indoor humidification that improves personal comfort and industrial productivity in daily life. However, commercial nonwoven (NW) humidifying membranes show mediocre humidification capability owing to limited wicking capacity, low water absorption, and relatively less water evaporation. Herein, we report a biomimetic micro-/nanofibrous composite membrane with a highly aligned fibrous structure using a humidity-induced electrospinning technique for high-efficiency indoor humidification. Surface wettability and roughness are also tailored to achieve a high degree of superhydrophilicity by embedding hydrophilic silicon dioxide nanoparticles (SiO2 NPs) into the fiber matrix. The synergistic effect of the highly aligned fibrous structure and surface wettability endows composite membranes with ultrafast water transport and evaporation. Strikingly, the composite membrane exhibits an outstanding wicking height of 19.5 cm, a superior water absorption of 497.7%, a fast evaporation rate of 0.34 mL h–1, and a relatively low air pressure drop of 14.4 Pa, thereby achieving a remarkable humidification capacity of 514 mL h–1 (57% higher than the commercial NW humidifying membrane). The successful synthesis of this biomimetic micro-/nanofibrous composite membrane provides new insights into the development of micro-/nanofibrous humidifying membranes for personal health and comfort as well as industrial production.
研究领域:
材料科学
·
环境工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）