PLANT SCIENCE
·
2025
·
IF 4.1
Ruilan Ran,Xiaofeng Li,Jiwei Zhang,Jiecai Zhao,Xin Zhao,Xiaoyun Cui,Guoxiong Chen,Pengshan Zhao
Sand rice ( Agriophyllum squarrosum (L.) Moq.), a species of Amaranthaceae sensu lato , is an annual psammophyte found mainly on sand dunes in arid and semi-arid regions of Central Asia. Trichomes on the leaf surface are a key adaptive feature of sand rice, however, their ecophysiological functions remain to be elucidated. In this study, the anatomical analysis of a leaf reveals that the foliage is characterized by its isobilateral and amphistomatic nature. Together with an average δ 13 C value of −28.57 ‰, these findings indicate that sand rice is a C 3 plant. Utilizing a trichome-defective mutant ( Agriophyllum squarrosum trichomeless1 , astcl1 ) identified from an EMS mutagenesis library by our group, alongside the wild type Shapotou (SPT), we observed that both epidermal surfaces on SPT leaves exhibit dense and dendritic trichomes, forming rough leaf boundary layers. Chlorophyll leaching analysis revealed that SPT has a higher epidermal permeability, with 86.32 % of chlorophylls leaching out within 30 minutes, compared to only 24.18 % for astcl1 . The astcl1 leaf displayed a higher leaf wettability, lower water loss, and thicker cuticle compared to SPT leaves, which may be associated with trichomes serving as the primary pathway for nonstomatal water movement. This is supported by the observation that toluidine blue staining is more intense in trichomes than in pavement cells. Our findings reveal that the correlation between trichomes and the cuticle appears to be a critical factor in managing water loss and overall plant hydration, highlighting the significant role of trichomes in the adaptation of sand rice to desert environments.
研究领域:
植物学
·
生态学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL POLLUTION
·
2017
·
IF 5.099
Changkun Xie,Liyan Kan,Jiankang Guo,Sijia Jin,Zhigang Li,Dan Chen,Xin Li,Shengquan Che
Particulate matter (PM) is one of the most serious environmental problems, exacerbating respiratory and vascular illnesses. Plants have the ability to reduce non-point source PM pollution through retention on leaves and branches. Studies of the dynamic processes of PM retention by plants and the mechanisms influencing this process will help to improve the efficiency of urban greening for PM reduction. We examined dynamic processes of PM retention and the major factors influencing PM retention by six trees with different branch structure characteristics in wind tunnel experiments at three different wind speeds . The results showed that the changes of PM numbers retained by plant leaves over time were complex dynamic processes for which maximum values could exceed minimum values by over 10 times. The average value of PM measured in multiple periods and situations can be considered a reliable indicator of the ability of the plant to retain PM. The dynamic processes were similar for PM 10 and PM 2.5 . They could be clustered into three groups simulated by continually-rising, inverse U-shaped, and U-shaped polynomial functions, respectively. The processes were the synthetic effect of characteristics such as species, wind speed, period of exposure and their interactions. Continually-rising functions always explained PM retention in species with extremely complex branch structure. Inverse U-shaped processes explained PM retention in species with relatively simple branch structure and gentle wind. The U-shaped processes mainly explained PM retention at high wind speeds and in species with a relatively simple crown. These results indicate that using plants with complex crowns in urban greening and decreasing wind speed in plant communities increases the chance of continually-rising or inverse U-shaped relationships, which have a positive effect in reducing PM pollution.
研究领域:
环境科学
·
植物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Xueyang Li,Hao Liu,Xiaoyan Xu,Bing Yang,Hong Yuan,Jingwei Guo,Fengting Sang,Yuqi Jin
We describe herein a flexible and tunable random laser made from a flexible poly(dimethylsiloxane) substrate. The substrate is prepared by casting via soft lithography from a lotus leaf to produce a micropapilla surface structure similar to that of a lotus leaf. The micropapilla provides efficient multiple scattering for the photons generated in the gain medium, and random lasing emerges because photons undergo closed-loop paths by scattering from three equilaterally arranged micropapillae. Given the diverse distribution of microscale features on the soft substrate, the random laser spectrum can be tuned by as much as 26.0 nm by changing the pump position. Furthermore, the random laser can be easily tuned by about 14 nm by flexing it, which modifies the micropapilla density and thereby changes the reabsorption strength of the laser dye. The photostability of the random laser is ensured by sealing the gain medium (i.e., dye solution) in a closed system. The results provide a promising method to realize a variety of laser-based applications such as optical biosensors on chips, microscale structural alteration detectors, flexible wearable devices, and multicolor (even white) random lasers.
研究领域:
光学材料
·
纳米技术
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2024
·
IF 7.1
Haifeng Jiang,Chen Yang,Jiaxing Song,Peng Cao,Jie Chen,Jiaxin Wang,Wenpeng Hong
The development of low-cost energy storage materials and the high-value utilization of fly ash are two major challenges that need to be addressed in the field of renewable energy. This work proposes an alkaline hydrothermal treatment method suitable for fly ash modification and prepares a porous bamboo leaf-like structured supporting material for encapsulating polyethylene glycol (PEG) phase change components. The results show that the prepared modified fly ash-based thermal storage material has an excellent latent heat performance, reaching 103.9 J/g, which is 2.24 times that encapsulated by ordinary fly ash. Meanwhile, the thermal conductivity of the modified composites is increased by 48.6%. After 100 heat storage/release cycles, the latent heat value of PEG/MFA decreases by only 0.028%. The reason is that the bamboo leaf-like structure of the modified fly ash support material provides a larger specific surface area. At the same time, the interaction between the support material and PEG promotes the effective adsorption and filling of the PEG phase change material. Leakage tests show that the maximum filling amount of PEG in the composite is 65 wt %. Furthermore, the prepared phase change heat storage material shows a good temperature regulation ability in simulated environment applications. This work sheds light on developing effective disposal of solid waste in power plants and its applications in the field of energy storage.
研究领域:
能源材料
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 27
·e55615
·
IF 2.7
Haimin Zheng,Fang Li,Dandan Chen,Gaowei Nie,Bo Yu,Xiaoxiao Chen,Hao Guo,Zhouai Luo,Zhikang Cheng,Jianxin He
Developing environmentally friendly and high-performing viable waterproof and breathable membranes (WBMs) is critical but significantly challenging. Herein, we combine electrospinning and electro-spraying methods. First, elastic thermoplastic polyurethane (TPU) is used as the polymer, and poly(methylhydrosiloxane) (PMHS) with low surface energy is introduced to prepare TPU/PMHS fiber-based membranes by electrospinning. Electro-spraying is performed using a dilute solution of TPU/PMHS/SiO 2 , with fluorine-free hydrophobic SiO 2 nanoparticles introduced to facilitate the construction of a rough lotus-leaf-like surface structure, ultimately obtaining TPU/PMHS/SiO 2 WBMs with bead-on-string fiber binary structures and a strong water repellency. The results indicate that the TPU/PMHS/SiO 2 WBMs comprise a three-dimensional porous structure formed by randomly arranged fibers and a lotus biomimetic structure consisting of bead-like fibers, providing the membrane with excellent mechanical properties and waterproof breathability, including a tensile strength of 15.8 MPa, static water pressure of 33 kPa, water vapor transmission rate of 5169 g m −2 d −1 , and contact angle of 142°. Additionally, the fiber membrane exhibits an excellent strain recovery after 1000 cycles of cyclic stretching under 100% strain, verifying the excellent elastic properties of the TPU/PMHS/SiO 2 WBMs. This simple preparation process and unique composite structure can facilitate the design and preparation of environmentally friendly, waterproof, and breathable materials.
研究领域:
材料科学
·
纺织工程
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale
·
2013
·Vol. 5
·期 17
·8114-8121
·
IF 6.233
Wei Zhang,Lanlan Zhai,Na He,Chao Zou,Xiaozhen Geng,Lujun Cheng,Youqing Dong,Shaoming Huang
Cu2ZnSnS4 is a promising solar absorbing material in solar cells due to its high absorption coefficient and abundance on earth. We have demonstrated that wurtzite Cu2ZnSnS4 nanoleaves could be synthesized through a facile solution-based method. Detailed investigation of the growth process indicates that α-Cu2S nanocrystals are first formed and then serve as a catalyst to introduce the Cu, Zn, and Sn species into the nanoleaf growth for fast ionic conduction. The structure of the as-synthesized nanoleaves is characterized by powder X-ray diffraction, high-resolution transmission electron microscopy, fast Fourier transform, and energy dispersive X-ray spectroscopy mapping. Photoresponses of Cu2ZnSnS4 nanoleaves are evaluated by I–V curves of a Cu2ZnSnS4 nanoleaf film. It is believed that the enhancement of the photoresponse current of the Cu2ZnSnS4 nanoleaf film can be attributed to fast carrier transport due to the single crystalline nature and enhanced light absorption resulting from larger absorption areas of the Cu2ZnSnS4 nanoleaves.
研究领域:
材料科学
·
太阳能电池研究
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2017
·
IF 2.714
Fapeng Wang,Li Wang,Huaping Wu,Jiuyin Pang,Di Gu,Song Li
Biological microstructures have been a source of inspiration for scientific researchers and artists. In this paper, the microstructure of the lotus leaf was replicated on the bamboo surfaces by soft lithography, using a fresh lotus leaf as the template and polydimethylsiloxane (PDMS) for a seal. And the hydrophobic monodisperse nano SiO 2 microspheres were added to improve the strength, abrasion resistance, and water resistance of the bamboo surfaces. X-ray diffraction (XRD) pattern, scanning electron microscopy (SEM) and atomic force microscope (AFM) showed that the lotus-leaf-like bamboo had a polycrystalline surface, and the lotus-leaf-like topography played a very important role in the fabrication of the superhydrophobic surface. The water contact angle (WCA) of lotus-leaf-like bamboo surface was 152.5° with a low hysteresis showing a good superhydrophobic property. The successful preparation of the lotus-leaf-like bamboo provided a new method for researches on the water corrosion resistance of bamboos, and also confirmed the feasibility that hydrophilic surfaces like the bamboo could be achieved with the nanotechnology.
研究领域:
材料科学
·
生物仿生学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Md All Amin Newton,Di Gao,Binjie Xin,Yuanshen Zheng,Hugh Gong
Efficient oil-water separation is crucial for environmental protection and industrial wastewater management; however, existing separation membranes often lack durability and suffer efficiency loss over multiple cycles. This study introduces a bio-inspired polyvinylidene fluoride (PVDF) membrane with a hierarchical lotus leaf-like surface, designed to overcome these limitations by enhancing separation efficiency, operational stability, and reusability. A polyvinylidene fluoride/polyvinylpyrrolidone (PVDF/PVP) composite membrane was fabricated as a support, onto which PVDF/silicon dioxide (SiO₂) micro-nanoparticles were electrostatically sprayed to create a micro-nano papillae structure. This was followed by in-situ polymerization of dopamine (DA), forming a polydopamine (PDA) coating that enhances hydrophilicity and underwater oleophobicity. Optimization experiments identified a 20-minute spraying duration as ideal, achieving uniform micro-nanoparticle distribution and maximizing water permeability, with a pure water flux of 14,321 L·m⁻²·h⁻¹. The PDA/M-P/S-20 membrane demonstrated over 99.9 % separation efficiency for various oil-water mixtures and maintained stable performance across 15 cycles with only a 2.1 % flux loss, a significant improvement over conventional membranes, which often experience rapid fouling and efficiency decline. Additionally, the membrane exhibited underwater oil contact angles above 140°, confirming its excellent underwater oleophobicity and self-cleaning capabilities. This research highlights the critical role of biomimetic design and precise structural control in addressing the durability and reusability limitations of existing separation technologies, offering a scalable, sustainable solution for industrial applications in petrochemical processing and wastewater treatment.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
NANOTECHNOLOGY
·
2015
·Vol. 26
·期 33
·335602
·
IF 3.821
Chao-Hua Xue,Xue-Qing Ji,Jing Zhang,Jian-Zhong Ma,Shun-Tian Jia
Superhydrophobic surfaces on PET textiles were fabricated by combined bioinspiration from the strong adhesion of marine mussels and the two-scale structure of lotus leaves under mild conditions. Dopamine can spontaneously polymerize in alkaline aqueous solution to form a thin adhesive layer of polydopamine (PDA) wrapping on the micro-scale fibers. The as-formed thin PDA layer worked as a reactive template to generate PDA nanoparticles decorated on the fiber surfaces, imparting the textiles with excellent UV-shielding properties as well as a hierarchical structure similar to the morphology of the lotus leaf. After further modification with perfluorodecyl trichlorosilane, the textiles turned superhydrophobic with a water contact angle higher than 150°. Due to the strong adhesion of PDA to a wide range of materials, the present strategy may be extendable to fabrication of superhydrophobic surfaces on a variety of other substrates.
研究领域:
材料科学
·
生物学
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2017
·Vol. 52
·期 12
·7428-7438
·
IF 2.599
Chen Yipeng,Wang Hanwei,Yao Qiufang,Fan Bitao,Wang Chao,Xiong Ye,Jin Chunde,Sun Qingfeng
The surfaces of plants represent multifunctional interfaces between the organisms and the environment. In this paper, biomimetic taro leaf-like structures with superparamagnetic and superhydrophobic performances were exactly copied on the wood surface through the soft lithography to improve the wood properties. Fe 3 O 4 nanoparticles were mixed into poly(dimethylsiloxane) PDMS suspensions to obtain Fe 3 O 4 /PDMS suspensions that commonly endow coats magnetic and microwave absorption properties, which were then cast onto the wood surface and packaged by PDMS stamps replicated from fresh taro leaves. Fe 3 O 4 /PDMS films, which coexisted superhydrophobic surface and superparamagnetic property, were created on the wood surface after the being dried and stamps were peeled off. The as-prepared wood surface exhibited unique taro leaf-like micro- and nanostructures, microwave absorption, superparamagnetism performances with maximum saturation magnetization ( M
s ) of 22.9 emu g −1 and superior static superhydrophobicity with a water contact angle of 152° ± 2°. This research may provide a feasible pathway for constructing naturally biomorphic structures on the wood surface with tailored functions.
研究领域:
材料科学
·
生物学
✓ 已验证
产品关联
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2022
·
IF 4.831
Zhengdong Zhu,Xiaoyi Shi,Yating Feng,Meng He,Cheng Ye,Hongyang Zhou,Maofeng Zhang,Wei Zhang,Jianhua Li,Changlong Jiang
Conventional surface-enhanced Raman scattering (SERS) molecular detection are based on hard and brittle substrate, which are not suitable for in-situ detection of analytes adsorbed on nonplanar surfaces. Here, we report a simple biomimetic synthesis method to fabricate lotus leaf mastoid structured AgNPs micro/nanoarrays as reliable SERS substrate. By ideal replicating mastoid structure of lotus leaf into a flexible and transparent PDMS film, followed by depositing plasmonic AgNPs, a powerful chemical sensor with high sensitivity and multiplex detecting capability is demonstrated. The employ of periodic mastoid structure array endows the sensor with high signal repeatability (RSD ∼ 8.6 %), solving the general repeatability problem of SERS substrates. In addition, the detailed designed flexible and transparent PDMS substrate is capable of identifying trace analytes on curved surfaces with excellent durability. In the proof-of-concept experiment, a limit of detection (LOD) of (10 −5 M to 10 −7 M) was achieved on a portable Raman device for three common pesticides residues (thiram, fonofos and triadophos) on dendrobium leaves and stem according to the molecular fingerprint, indicating its excellent in-situ detection capability. Further, the multiplex detection ability of the Ag/PDMS film is also demonstrated by analyzing the mixture of four typical analytes. Benefiting from its high signal uniformity, this flexible Ag/PDMS substrate also showed good quantitative detection capabilities.
研究领域:
材料科学
·
分析化学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nanoscale
·
2018
·Vol. 10
·期 23
·10963-10970
·
IF 7.233
Hui-Si Li,Jin Qu,Shu-Meng Hao,Zhen-Zhen Wang,Yu-Jiao Zhang,Zhong-Zhen Yu
The rapid capacity degradation of Ge-based materials hinders their practical application for next generation lithium ion batteries, which could be solved by synthesizing Ge-containing ternary oxides, with new structures and hybridizing with carbon nanomaterials. Herein, novel Ni3Ge2O5(OH)4 nanosheets were synthesized and distributed in situ on reduced graphene oxide (RGO) sheets, with both flat-lying and vertically-grown spatial distributions to imitate the growth of lotus leaves. These two types of Ni3Ge2O5(OH)4 nanosheets enhance their efficient contact with RGO, and increase the mass loading of active materials. Furthermore, the interfacial bonds between RGO sheets and Ni3Ge2O5(OH)4 nanosheets are introduced to improve the diffusion rate of lithium ions. The RGO sheets act as a buffer matrix to sustain the volume change and prevent the nanosheets from aggregation. Consequently, the chemically bonded Ni3Ge2O5(OH)4/RGO hybrid delivers a high specific capacity of 863 mA h g−1 over 75 cycles, which is much higher than those for neat Ni3Ge2O5(OH)4 nanosheets or the hybrid without the interfacial bonding. This study provides a novel perspective for designing high-performance Ge-based anode materials for advanced lithium ion batteries.
研究领域:
材料科学
·
能源存储
✓ 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）