Materials
·
2023
·Vol. 16
·期 21
·7015
·
IF 3.4
Haipei Ge,Yu Liu,Fujuan Liu
In recent years, with the rapid development of the economy and great progress in science and technology, people have become increasingly concerned about their quality of life and physical health. In order to pursue a higher life, various functional and biomimetic textiles have emerged one after another and have been sought after by people. There are many animal and plant surfaces with special wettability in nature, and their unique “micro-nano structures” and low surface energy have attracted extensive attention from researchers. Researchers have prepared various textiles with superhydrophobic features by mimicking these unique structures. This review introduces the typical organisms with superhydrophobicity in nature, using lotus, water strider, and cicada as examples, and describes their morphological features and excellent superhydrophobicity. The theoretical model, commonly used raw materials, and modification technology of superhydrophobic surfaces are analyzed. In addition, the application areas and the current study status of superhydrophobic surfaces for textiles are also summarized. Finally, the development prospects for superhydrophobic textiles based on bionic technology are discussed.Keywords:superhydrophobic surface;biomimetic textiles;lotus leaf;theoretical modeling
研究领域:
材料科学
·
生物仿生学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
IEEE JOURNAL OF QUANTUM ELECTRONICS
·
2024
·Vol. 60
·期 2
·1-6
·
IF 2.2
Yang Xiao,Jian Cui,Xusheng Xiao,Yantao Xu,Haitao Guo
A novel
$1.7 \mu \text{m}$
and
$2.4 \mu \text{m}$
dual-wavelength pumping scheme for a
$4.3 \mu \text{m}$
dysprosium (Dy3+)-doped chalcogenide fiber laser was theoretically demonstrated. It was attributed to the
$2.4 \mu \text{m}$
excited stated absorption (ESA,
$^{6}\text{H}_{\mathrm {13/2}} \to ^{6}\text{H}_{\mathrm {9/2}},^{6}\text{F}_{\mathrm {11/2}}$
transition). Theoretically, when the two pumps were 5 W and 2 W, respectively, a laser power of 1.5 W with an remarkable efficiency of 30.2% was obtained from the home-made Dy3+:Ga0.8As34.2Sb5S60 glass fiber with a loss coefficient of 3 dB/m and a Dy3+ concentration of
$3.67\times 10^{25}$
ions/m3. Results indicated that the dual-wavelength pumping scheme based on the gain fiber provides a potential way to
$4.3 \mu \text{m}$
dysprosium-doped chalcogenide fiber lasers.
研究领域:
光学工程
·
激光技术
·
材料科学
·
量子电子学
·
红外光学
✓ 已验证
DOI
高影响因子
ADVANCED MATERIALS
·
2022
·Vol. 34
·期 47
·2206970
·
IF 32.086
Zhijia Zhang,Xu Yang,Peng Li,Yao Wang,Xin Zhao,Javad Safaei,Hao Tian,Dong Zhou,Baohua Li,Feiyu Kang,Guoxiu Wang
Rechargeable multivalent metal (e.g., zinc (Zn) and aluminum (Al)) batteries are ideal choices for large-scale energy storage owing to their intrinsic low cost and safety. However, the poor compatibility between metallic anodes and electrolytes strongly hampers their practical applications. Herein, it is demonstrated that confining multivalent metals in a biomimetic scaffold (Bio-scaffold) can achieve highly efficient multivalent metal plating/stripping. This Bio-scaffold is well-tailored through the synergy of a parallel-aligned array of fractal copper branches and a CaTiO 3 (CTO)-based coating layer. By virtue of this design strategy, the as-developed Bio-scaffold-based Zn- and Al-metal anodes exhibited dendrite-free morphologies with high reversibility and long lifespan, as well as excellent performance for Zn and Al full batteries. Theoretical modeling and experimental investigations reveal that the fractal copper array not only facilitates multivalent ion diffusion and electrolyte wetting but also effectively reduces the local current densities during cycling; Meanwhile, the CTO-based coating layer effectively blocks interfacial side reactions and enables a homogeneous ionic flux. This work opens a new avenue for developing multivalent metal batteries.
研究领域:
材料科学
·
电化学
·
储能系统
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
·
2024
·
IF 7.1
Congshan Liu,Yangkun Du,Kecheng Li,Chaofeng Lü
Surface morphological instability, induced by geometric incompatibility, is ubiquitous in nature and plays a pivotal role in maintaining specific biological functions in organs. In this study, we experimentally reveal that geometric incompatibility effectively regulates the morphological instability of bilayer tubes. Building upon these experimental findings, we develop a theoretical model to elucidate the underlying mechanical mechanism of the observed morphological instability. Theoretical analysis demonstrates that by manipulating geometric incompatibility, various patterns including circumferential, two-dimensional (2D), and axial patterns can be generated in bilayer tubes. Specifically, as the axial geometric incompatibility parameter increases, the instability pattern transitions from the circumferential pattern to the 2D pattern and eventually to the axial pattern. Furthermore, we conduct a series of quantitative experiments and finite element simulations to validate our theoretical model. Both the numerical simulations and experimental observations show excellent agreement with our theoretical predictions, demonstrating that linear stability analysis can be employed not only to predict wrinkles but also to determine the number of creases in tubular soft materials roughly. This study significantly advances our understanding of the morphological instability of geometrically incompatible bilayer tubular tissues and provides valuable insights for the fabrication of morphology-related multifunctional surfaces.
研究领域:
生物力学
·
材料科学
·
理论建模
✓ 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）