CRYSTAL GROWTH & DESIGN
·
2024
·
IF 3.2
Rui Wang,Ruilan Xu,Kaipeng Zhang,Lu Gan,Xintu Lin,Shangxi Zhang,Yong Peng
Preventing the appearance of fog on transparent glass is an important issue not only in our daily lives but also in scientific research and clinical diagnosis. A zeolite molecular sieve with MFI-type structure was identified as a very promising antifog material. In this work, MFI zeolite films with different microstructures were prepared by the solvothermal secondary growth method using diols including ethylene glycol (EG), diethylene glycol (DEG), triethylene glycol (TEG), and tetraethylene glycol (tEG) as solvents. The elimination mechanism of new MFI twin crystals was demonstrated based on scanning electron microscopy (SEM), X-ray diffraction (XRD), and transmission electron microscopy (TEM) characterizations of the resulting films and the mother solutions. The twin-free MFI films with b-axis preferred channel orientation exhibited both higher light transmittance and lower haze compared with the a-&b-mix-oriented film. The employment of diol solvents facilitated the generation of a surface Si–OH group on the films, leading to the improvement of film hydrophilicity. By taking advantages of the high transparency and hydrophilicity, the b-oriented MFI films synthesized on glass substrate achieved good antifogging performance.
研究领域:
材料科学
·
光学
·
表面科学
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产品关联
DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2023
·
IF 8.7
Jianjun Xu,Zuowei Zhang,Longxiang He,Yingjie Shi,Yanzi Gao,Meina Yu,Huai Yang
As a type of intelligent dimming film, polymer dispersed liquid crystal (PDLC) films show attractive application prospects in field of smart windows. However, their current performance cannot meet the requirement of outdoor window applications, especially in severe conditions, such as poor shielding effect at high temperatures, delayed response at low temperatures and high off-axis haze. To simultaneously solve these problems, a PDLC film was prepared by optimizing the structure of acrylate crosslinking agent and birefringence of LC, which exhibits good shielding effects and contrast ratio (10) at high temperature of 100 °C, short rise time (0.16 s) and decay time (2.4 s) at low temperature of −30 °C, and a satisfying low off-axis haze (on-state haze <10 % at ±45°, on-state transmittance >65 % at ±60°). This study provides meaningful supplements for the application of PDLC film in outdoor smart windows, especially in automotive smart windows under extreme weather conditions.
研究领域:
材料科学
·
能源技术
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产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Qingqing Jin,Shouwei Gao,Yunxia Mao,Le Zhang,Zhengji Xu,Ye Fan,Yanan Li,Zuankai Wang,Mingmei Wu
Transparent superamphiphobic materials have significant attraction in fundamental research and practical applications that demand light transmission and self-cleaning properties. However, the high haze of those traditional transparent superamphiphobic materials, caused by the visible light scattering of the surface rough structures, severely limits their applications on optical surfaces like electronic displays, optical lens, and building windows. Here, a high transparency and ultralow haze superamphiphobic material is reported, based on nanoscale reentrant structures with suppressed microscale structure, which is the main cause of haze. Nanoscale roughness effectively reduces visible light scattering, thus reducing haze (0.8%, nearly the same as pristine glass) and improving light transmittance (90.4%), and the material remains super-repellent to water and oils with excellent anti-fouling properties. This highly transparent and ultralow haze superamphiphobic material is expected to be be attractive in areas like optical devices, displays, windows and the photovoltaic industry.
研究领域:
材料科学
·
表面工程
·
光学材料
·
纳米技术
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Gaoyuan Hou,Yu Liu,Dejian Zhang,Guanhui Li,Hong Xie,Zhiqiang Fang
A highly transparent cellulose film with a high built-in haze is emerging as a green photonic material for optoelectronics. Unfortunately, attaining its theoretical haze still remains a challenge. Here, we demonstrate an all-cellulose composite film with a 90.1% transmittance and a maximal transmission haze of 95.2% close to the theoretical limit (∼100%), in which the entangled network of softwood cellulose fibers works as strong light scattering sources and regenerated cellulose (RC) with undissolved fibril bundles functions as a matrix to simultaneously improve the optical transparency and transmission haze. The underlying mechanism for the ultrahigh haze is attributed to microsized irregularities in the refractive index, arising primarily from the crystalline structure of softwood fibers, undissolved nanofibril bundles in RC, and a small number of internal cavities. Moreover, the resulting composite film presents a folding resistance of over 3500 times and good water resistance, and its application in a perovskite solar cell as an advanced light management layer is demonstrated. This work sheds light on the design of a highly transparent cellulose film with a haze approaching the theoretical limit for optoelectronics and brings us a step further toward its industrial production.
研究领域:
材料科学
·
光学
·
可再生资源工程
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产品关联
DOI
PubMed
高影响因子
Nano Materials Science
·
2026
·
IF 17.9
Mengyao Wang,Jiangtao Zhu,Jingyang Liu,Jianfeng Wang,Xiuxiu Jin
Highly transparent, low-haze polymeric films enabling bidirectional dynamic radiative heating and cooling hold significant promise for architectural and automotive applications; however, their development remains challenging. Herein, we present a low-haze, transparent polymeric film (LHTP) designed for visual regulation of bidirectional radiative heating and cooling. The LHTP film features a bilayer structure: a cooling layer comprising polydimethylsiloxane integrated with silicon dioxide aerogel microsphere of nanoparticles, and a heating layer fabricated via magnetron sputtering nanocoating of indium tin oxide onto a transparent polyethylene terephthalate substrate. The film achieves a high visible transmittance of 79.9% with a low haze of 15.4%, ensuring effective visual clarity. The heating side exhibits a low infrared emissivity of 44.5%, while the cooling surface demonstrates a high infrared emissivity of 90% alongside enhanced solar reflectance. Dynamic switching between heating and cooling modes is achieved via a simple flipping mechanism, yielding temperature increases of 8.6 °C and decreases of 6.9 °C, respectively. Furthermore, the LHTP film is mechanically flexible, exhibits dual-sided hydrophobicity, and possesses excellent Joule heating capability. Notably, it shows minimal performance degradation after one month of outdoor exposure. These properties collectively bolster its long-term potential for energy-efficient applications across building, automotive, and wearable eyewear technologies.
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Hang Li,Shuhua Tu,Hongyi Tu,Min Chen,Shuxue Zhou,Limin Wu
Transparent superhydrophobic coatings have excellent self-cleaning performance and are particularly suitable for applications in the fields of outdoor photovoltaic displays, solar power generation, and windows. However, the micro-nanostructures required for superhydrophobic coatings make them poor abrasion-resistant and foggy, and hence transparent superhydrophobic coatings with good practicality still remain great challenging. Here, we report honeycomb-structured coatings simultaneously with high transparency, abrasion-resistance and superhydrophobicity by fabrication of honeycomb epoxy resin structure via PDMS template method and subsequent spraying of hydrophobic SiO 2 nanoparticles. The coatings with different honeycomb structures exhibit average transmittance of 90.0 %, and the haze in the range of 8.9–54.1 %. Both the honeycomb structure formed by hard epoxy resin and strong adhesion of hydrophobic SiO 2 nanoparticles enable the coatings to maintain superhydrophobicity after harsh mechanical abrasion and weathering.
研究领域:
材料科学
·
表面工程
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Heng Luo,Meng Yang,Dongdong Li,Qianxiang Wang,Weizhi Zou,Jian Xu,Ning Zhao
Transparent superhydrophobic surfaces are of vital significance for rising applications in optoelectronics, outdoor displays, building windows, and so on. However, facile fabrication of surfaces combining stable superhydrophobicity and high transparency with particularly low haze remains a challenge. Here, we demonstrate a nonfluorinated hierarchical surface, simply prepared by sequential spraying of a primer of poly(ethylene-co-acrylic acid) (EAA) and silica nanoparticles (SiO2). The resultant surface shows remarkable liquid repellency (e.g., an apparent contact angle of >160° and a sliding angle of <2° for honey) and high transparency (a transmittance of ∼91% and a haze of ∼6%). Especially, flexible EAA adhesive enables the surface to resist water impinging (up to ∼15.0 m s–1, higher than the terminal velocities of raindrops) and mechanical damaging. This super-repellent surface also presents excellent UV and chemical stability, sustaining a superhydrophobic state upon UVA exposure for 60 days and acidic corrosion or oil contamination for 7 days. With multirobustness and scalability, our coatings show great potential in related fields.
研究领域:
材料科学
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表面工程
·
纳米技术
·
光电子学
·
涂层技术
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Hang Li,Yi Wu,Hongyi Tu,Min Chen,Shuxue Zhou,Limin Wu
Transparent superhydrophobic coatings hold significant potential for applications such as windows and reflectors. However, issues such as fragility and high haze have limited their practicality. Drawing inspiration from dragonfly structures, we developed a transparent superhydrophobic coating by etching the polystyrene microsphere array semiembedded on a silicon oxide matrix and subsequently depositing the methyltrichlorosilane-derived nanofilaments. The resulting coating features silicon oxide craters and nanofilaments inspired by dragonfly wings. Due to the coating’s small, multiscale nanostructures, it has a high average visible light transmittance of 90.4% and a low average haze of 4.0%, comparable to the substrate glass. It also exhibits exceptional superhydrophobic properties, with a contact angle of 161.5° and a sliding angle of 1.5°. Notably, the coating retains its superhydrophobicity even after withstanding impacts from 5 kg of water and 500 g of sand, thanks to its robust wing vein-inspired protected structure. Additionally, it shows strong resistance to acids, alkalis, and temperatures up to 400 °C. The coating maintains a high transmittance and low haze after 67 days of UV irradiation or 300 days of outdoor exposure. The combination of low haze and robustness in this transparent superhydrophobic coating highlights its promising potential for applications in related fields.
研究领域:
材料科学
·
仿生学
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产品关联
DOI
PubMed
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2020
·
IF 6.551
Yangyang Liu,Tao Wang,Xiaozhong Fang,Yue Deng,Hanyun Cheng,Aziz-Ur-Rahim Bacha,Iqra Nabi,Liwu Zhang
The rapid sulfate formation is a crucial factor determining the explosive growth of fine particles and the frequent occurrence of severe haze events in China. Recent field observations also show that brown carbon is one of the most critical components in aerosol particles sampled during haze episodes. To this day, there is limited knowledge that accesses the role of brown carbon in atmospheric chemistry . In fact, these carbonaceous particulate matters , mainly derived from forest fires, biomass burning , and biogenic release, can act as photosensitizers and produce varieties of active intermediates to alter oxidation capacity. Experimental results in this work provide evidence that hydroxyl radical (∙OH) stems from brown carbon proxies fulvic acid /humic acid (FA/HA) upon irradiation, leading to rapid SO 2 oxidation on brown carbon particles in the atmosphere. Further correlation analyses for sulfate formation and chromophore properties of 12 model compounds demonstrate that brown carbon particles with higher aromaticity and E 2 /E 3 (the ratio of absorbance at 254 nm to that at 365 nm) would facilitate ∙OH production and SO 2 photo-oxidation. Uptake coefficient measurements and sulfate production rate estimation indicate that brown carbon could gain importance in atmospheric SO 2 oxidation. A better understanding of SO 2 uptake kinetics on brown carbon surfaces favors in defining new regulations to improve air quality and reduce the harmful effects of haze events on resident health and the environment.
研究领域:
大气科学
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环境化学
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产品关联
DOI
PubMed
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2023
·
IF 6.6
Xiaorong Liu,Haozhe Peng,Tao Zhang,Kaili Wang,Youming Dong,Kaidong Wang,Xianxu Zhan,Yuanqiang Liu,Yanjun Li,Jianzhang Li
The wood film (WF) fabricated by top-down wood nanotechnology possessed high mechanical strength , low energy consumption, environmental friendliness, and easy preparation, however, the high optical haze and poor water-resistant have seriously hindered its practical application. In this work, the epoxy resin was directly brushed on the surface of the WF, which can not only effectively reduce the haze of the WF, but also protect the WF to avoid the adverse effect of water on it. Compared with the untreated WF, the epoxy resin-coated wood film (WEF) showed low haze, which decreased from 76 % to 43 % at a wavelength of 550 nm. Meanwhile, the water-resistant property was effectively improved. The WEF could keep its shape intact and strength in agitated water, whereas the WF quickly disintegrated to form fine fibers. In addition, the longitudinal and transverse tensile strengths of the WEF were 157.2 MPa and 21.1 MPa. The WEF exhibited excellent optical properties , water-resistant performance, flexibility, and high strength, which could significantly broaden its application fields.
研究领域:
材料科学
·
林业工程
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产品关联
DOI
高影响因子
Advanced Composites and Hybrid Materials
·
2024
·Vol. 7
·期 6
·1-9
·
IF 23.2
Dai Xiaokang,Wang Longxiang,Fallatah Ahmed M.,Wang Xing,Almalki Abdulraheem S. A.,Qi Yiyu,Jin Xiaoyu,Yang Shengxiang,Yuan Bingnan
Translucent materials are widely used in indoor lighting, electronic display devices, photovoltaic devices, and other aspects of daily life. Developing materials with high transparency that can effectively manage the transmitted light spectrum is of significant practical importance. This study focuses on constructing a flexible composite film matrix using biomass nanocellulose fibrils (CNF) and polyvinyl alcohol (PVA) as raw materials. Based on the down-conversion luminescence principle, we use carbon nitride nanosheets (CNNs) as the core for light management, filtering UV rays from sunlight while converting them into visible light for light compensation. The transparency test results show that the prepared CNNs@CNF/PVA flexible composite film has a total transmittance of about 90% in the visible light range, with a haze greater than 60%. Three-dimensional fluorescence test results indicate that CNNs@CNF/PVA can convert UV light in the range of 250–375 nm into visible light in the range of 420–550 nm. Simulated outdoor lighting results show that the composite film material performs better than ordinary glass and PMMA in light transmission. This biomass-based flexible film material is expected to have broad applications in indoor lighting, flexible photovoltaic devices, and high-quality fruit and vegetable cultivation.
研究领域:
材料科学
·
光管理技术
·
生物质材料
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产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2024
·
IF 7.1
Xueqian Li,Junying Li,Xiaoying Shen,Mengyao Cao,Yu Wang,Wansong Zhang,Yanglei Xu,Zhe Ling,Sheng Chen,Feng Xu
Light-management films that can control solar transmission through themselves, especially those based on renewable and biodegradable materials, are significant for diverse photon-related applications such as energy-efficient buildings, photovoltaics, and optoelectronic devices. Herein, composite transparent films with adjustable haze and UV-blocking capabilities are developed based on the main components of lignocellulosic biomass (cellulose and lignin), and their promising applications in light management are also demonstrated. Carboxymethyl cellulose (CMC) with a good film-forming property is used as the substrate matrix, and cellulose nanocrystals (CNC) with a nanoscale rod-like shape are used as functional fillers. The obtained CMC–CNC composite films exhibit adjustable optical properties (high transparency of >90% and haze of 3.17–13%) and surprisingly enhanced mechanical strength and thermal stability when compared with pure CMC films. Furthermore, lignosulfonates (LS), as industrial lignin products, are combined to endow the CMC–CNC–LS composite films with excellent UV-shielding performance (98.17% UVB and 89.38% UVA), but they well maintain the high transparency and haze. We demonstrate that the composite films are able to avoid color changes of UV test cards by shielding UV light and that they achieve uniform illumination when light transmits through, indicating their promising potential for practical applications in light management. In addition, the effect of CNC and LS contents on the morphological, chemical, mechanical, and thermal properties of composite films is investigated. Our work provides novel insights into the fabrication of sustainable light-management films based on lignocellulose-derived materials by tuning their light-scattering and light-absorbing properties.
研究领域:
材料科学
·
可再生资源
·
光管理
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DOI
高影响因子
危险品化学品经营许可证（带存储）