Nanoscale
·
2019
·Vol. 11
·期 28
·13521-13531
·
IF 6.97
Nan Pan,Juanrong Qin,Pingping Feng,Botao Song
Fibrous materials with high light transmittance exhibit great potential in a wide range of applications; unfortunately, fabrication of such materials still remains a challenge due to the strong light scattering caused by the rough fibrous structure and the voids between fibers. Window screens are commonly used in our daily life, and their unique woven structure ensures excellent mechanical properties, while the voids between wires allow light to pass through. By learning from the architecture of window screens, we proposed a novel patterned electrospinning approach with window screen like wire meshes as collectors to deposit fibers with anisotropic thickness gradients and further to improve the optical properties. The results indicated that the obtained fibrous mats closely copied the structure of the wire meshes, and exhibited unique thickness anisotropy with most of the fibers densely packed on the wires in a small area, while very few fibers sparsely suspended in the voids over a large area. Owing to the large area of the thin region within fibrous mats, the overall light transmittance of such a well-organized mat was greatly improved as compared with that of an isotropous mat. Furthermore, by carefully investigating the microstructure of the fibrous mats and simulating the electric field distribution with the software Comsol Multiphysics, a novel needle array collector with an ultra large area of voids was designed to achieve optimal light transparency. Finally, as proof of concepts, we investigated the potential use of transparent fibrous mats as a visual wound dressing and a window dust filter, respectively.
研究领域:
材料科学
·
光学
·
生物医学工程
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Yalin Qin,Peikun Yan,Fuxuan Han,Yongcheng Zhang,Zonglin Lv,Chunming Zhou
The enhancement of both transparency and piezoelectric properties in transparent ferroelectric ceramics is a challenge. In this work, we prepared transparent 0.75Pb(Mg 1/3 Nb 2/3 )O 3 -0.25PbTiO 3 : x Pr 3+ ceramics by oxygen atmosphere sintering together with hot pressing sintering. When x = 1.5 mol%, a transparency of 68% @ 900 nm (close to the theoretical value ~71%) was achieved, and the piezoelectric properties increased to twice as much as those in undoped ceramics ( x = 0). The small average domain size (below 200 nm) that far below the visible light wavelength was believed to benefit light transmittance. Meanwhile, the minute amount of tetragonal component induced by Pr 3+ irons, was supposed to be responsible for the improved piezoelectric properties. These merits make Pr 3+ -doped 0.75PMN-0.25PT transparent ceramics promising functional materials for transparent piezoelectric devices.
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
高影响因子
CHEMICAL PAPERS
·
2021
·Vol. 75
·期 8
·4093-4098
·
IF 2.097
Yu Shan,Zeng Zhiwen,Guo Cuiping,Jiang Jiu,Pei Dating,Lu Daohuan,Geng Zhijie
Traditional hyaluronic acid (HA) hydrogels are limited by many bottlenecks such as lack of the mechanical strength. In this work, we surprisingly found that with the assistance of small molecule agents (e.g., bis-acrylamide, BIS), the mechanical property of HA hydrogels could be modulated. The HA-BIS hydrogels resulted in stronger mechanical properties increasing from 5.3 kPa (HA hydrogels) to 14.5 kPa (HA-B10 hydrogels). Furthermore, the HA-BIS hydrogels exhibited extraordinary high light transmittance (nearly 100%). The introduction of small molecular agents is advantageous to enhance the mechanical properties of natural hydrogels and pave a new way for wider applications.
研究领域:
生物材料学
·
组织工程
·
医学材料
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Jianing Li,Xuegang Lu,Yin Zhang,Fei Cheng,Yanlin Li,Xiaoxiang Wen,Sen Yang
Smart optical materials are drawing more and more attention because of their wide application in energy conservation, wearable sensors, optical tuning, and medical devices. However, current smart optical materials, including electroresponsive, thermoresponsive, and mechanoresponsive materials, are greatly restricted in practical applications because of their long response time, complicated preparation, and high cost. This study develops a novel, magnetically tunable, smart optical material with swift and high-contrast optical switching based on one-dimensional (1D) Fe3O4@SiO2 nanochains (NCs), which have the large shape anisotropy of the 1D structure and the superparamagnetic properties of Fe3O4 particles. The material exhibited a clear transparent state when NCs were arranged parallel to the viewing direction under an applied magnetic field, whereas it showed good shielding effect when the NCs were randomly oriented upon removal of the field. The light transmittance could be dynamically adjusted over the wide range of 20–80% through a small applied magnetic field of 50–100 Oe, which is superior to most of the currently reported systems. This swift, sensitive, and reversible response is attributed to the good responsivity of magnetic NCs. Also, an effective model was proposed to explain the transmittance modulation scheme and forecast its optical potential. The large tunable range and the low triggered field make Fe3O4@SiO2 NCs an advantageous candidate for application in smart windows, optical switchers, and other fields.
研究领域:
材料科学
·
光学工程
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Zhangyang Xu,Qixin Zhang,Yuyu Yang,Hao Wu,Yucen Xie,Yanyun Yang,Ping Feng,Jiahui Hou,Lingfu Kong,Jielei Tu
Photovoltaic glass coatings with multiple functions, such as strong broad-spectrum antireflectivity, effective self-cleaning, anti-abrasiveness, stability, and durability, have great potential for improving and ensuring the outdoor operation of photovoltaic modules . In this study, alkali-catalyzed hollow and solid silica nanoparticles were mixed at controlled ratios by sol-gel method, and the resulting solution was modified with HMDS to improve hydrophobicity , and obtain refractive indices ranging from 1.45 to 1.13. Subsequently, based on the principle of gradient refractive index, a trilayer hydrophobic antireflective (TLHA) coating was developed, comprising a top layer (n = 1.13), a middle layer (n = 1.27), and a bottom layer (n = 1.44). The TLHA coating exhibited an average transmittance of 97.77 % in the wavelength range of 380–1800 nm, with a peak transmittance of 98.97 % at 572 nm, and a hydrophobic contact angle of 144°. Additionally, after 144 h of thermal cycling and 600 abrasion cycles, the average transmittance of the TLHA coating decreased by 2.43 % and 1.63 %, respectively, in the 380–1800 nm range, and the coating's pencil hardness reached 5 H. And further application results showed that the crystalline silicon micro-modules with the TLHA coating could exhibit a 7.63 % and 5.24 % increase in J sc , as calculated from EQE and J-V curves respectively, and a 5.34 % increase in PCE , compared to modules without the TLHA coating. These results highlight the extensive applicability of the TLHA coating in enhancing outdoor photovoltaic operation efficiency, durability, and wear resistance.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
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
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2023
·Vol. 170
·期 12
·127505
·
IF 3.9
Maolan Zhu,Jun Yin,Wei Weng,Chunhai Jiang,Jiangcong Zhou,Liang Wang,Shuiping Zhong
Silver nanowires (AgNWs)-based transparent electrode is one critical component for many modern electronic devices, however, preparation of high-performance AgNWs-based transparent electrode with appealing light transmittance and long-term stability is still challenging. Herein, by combining the size-optimized AgNWs with graphene oxide (GO), the composite AgNWs/GO film electrode with high light-transmittance and appealing stability is prepared. For the size-controlled preparation of AgNWs, well-defined one-dimensional structure (average diameter = 62 nm) is obtained by elaborately adjusting the Br− concentration (0.05 mM), Cl− concentration (1 mM), ratio of PVP/AgNO3 (5:1) and PVP-type selection (PVP1300k: PVP58k = 2:1), contributing to a high light transmittance of 84% for the corresponding AgNWs-based electrode. After further introducing the GO, the film electrode presents much enhanced stability and increased film-substrate adhesive strength, namely only 3.6% increase in resistance after 1000 cycles of bending and being stable even under ultrasonic vibration. The results can provide new insights for designing electrode with ultrastability and high light transmittance.
研究领域:
材料科学
·
纳米技术
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Shun Ou,Jingxiao Ou,Junjie Liu,Yiqi Li,Bin Tang,Qiaocheng Peng,Dongfu He,Yudi Wang,Yanran Mao,Jianxin Chang,Fumin Du,Tiezheng Lv
The anti-reflection (AR) technology currently used in photovoltaic (PV) glass has reached its operational limit as the refractive index of existing materials cannot be lowered further. To overcome this, in this study, we selected formed methylsiloxane as an AR layer for PV glass. Its low refractive index (∼1.37) originates from the high content of methyl groups and the formation of voids during crosslinking. We acquired and compared the refractive index curves, conducted structural analyses, characterizations (optical, thermal, and surface), and performance evaluations to confirm the advantages of silicone as an AR layer for PV panels . The spreading and subsequent room-temperature self-curing characteristics of silicone considerably enhanced its applicability for upscaling and repair. The hydrophobic nature of the silicone AR layer imparted a new self-cleaning function to the solar panels; further, the methyl-silicone coating enhanced light transmission, resulting in electrical gain. Furthermore, the addition of the methyl-silicone layer created a refractive index gradient on the glass surface, making it fully compatible for use with the mainstream AR process, namely, the sol-gel method employed for PV glass.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
Science China-Materials
·
2025
·
IF 7.4
Li Hang,Wang Zehao,Tu Hongyi,Chen Min,Wu Yi,Wu Limin
Transparent superhydrophobic coatings hold significant potential for applications in architectural glass and optoelectronic devices. However, obtaining good compatibility between highly transparent, low haze and excellent mechanical stability in a superhydrophobicity coating remains a significant challenge. Inspired by the natural protection mechanism of the hierarchical structure of leaf veins, we have designed and fabricated transparent superhydrophobic coatings with highly detailed hierarchical vein-like ridges via a template-assisted multi-mask photolithography and inverted mold process combined with a spraying technique. The coated glass exhibited not only outstanding superhydrophobicity, with contact angle ⩾ 160° and sliding angle ⩽ 1.5° but also a high optical transmittance of 88.4% and a low haze of 8.1%, as well as remarkable mechanical durability and weather resistance.
研究领域:
材料科学
·
仿生学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2019
·
IF 4.029
Xiaolian Chao,Xiaodan Ren,Xiaoshuai Zhang,Zhanhui Peng,Juanjuan Wang,Pengfei Liang,Di Wu,Zupei Yang
Here we report a lead-free multifunctional material (1-x)(K 0.5 Na 0.5 )NbO 3 -xBa(Mg 1/3 Nb 2/3 )O 3 prepared by pressure-less sintering procedure. X-ray diffraction indicates a gradual crystal structure transformation with increasing x. Microstructural observation demonstrates that the addition of Ba(Mg 1/3 Nb 2/3 )O 3 additive reduces the size of grains with clear grain boundary, which is favorable for a high optical transmittance. The relaxor characteristics of the ceramics could lead to further enhancement of the transparency, owing to the low defects and weak light scattering. Notably, the ceramics with 0.04 ≤ x ≤ 0.06 all show good transparency over 70% in visible region and 80% in infrared region.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Nan Pan,Xueru Sheng,Ruisen Shi,Haiyuan Jia,Jian Zhang,Na Li,Haiqiang Shi,Bing Wang,Qingwei Ping
Transparent wood (TW) has attracted much attention in the field of energy saving building structural materials because of its high light transmittance, good thermal insulation performance and good toughness. However, the polymeric resins used in the present study to impregnate lignin-based wood templates are usually derived from petroleum-based chemical resources, which pose a fatal threat to human beings both in terms of consuming large amounts of resources and causing environmental pollution problems. It is therefore important to develop alternatives to petroleum-derived chemicals in renewable natural resources . Here, we report a green and sustainable TW production process based on the bio-recycling concept. Lignin-based sustainable resin (LSR) was prepared from waste lignin produced during delignification by polymerization of guaiacol. At the same time, according to FT-IR and NMR data analysis combined with previous studies, the synthesis mechanism of LSR was proposed, and this result provided a reference for bio-based resins made from biomass materials. The prepared lignin-based sustainable transparent wood (LSTW) has good light transmittance and good dimensional stability. In addition, the LSTW also shows good thermal insulation and indoor temperature regulation capabilities compared with the common glass.
研究领域:
材料科学
·
可持续发展
·
生物质能
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2023
·
IF 5.9
Ruisen Shi,Xueru Sheng,Haiyuan Jia,Jian Zhang,Na Li,Haiqiang Shi,Meihong Niu,Qingwei Ping
Transparent wood (TW) is a novel biomass-derived composites with potential applications in many areas. In general, the preparation of TW usually involves two steps: (1) the delignification treatment of the wood and (2) the impregnation of the delignified wood (DW) with the resin. However, the resins used for the impregnation still need to be produced from traditional petrochemical materials, which does not fit the concept of green chemistry and carbon neutrality. In this work, a new type of the sustainable transparent wood (STW) was fabricated with the sustainable PG resin and the balsa wood. PG resin was obtained by the polymerization of the phenol and glucose, which could be prepared by the catalytic degradation of the lignin and cellulose , respectively. The obtained STW exhibited good light transmittance (45.8%), excellent mechanical performance (162.1 MPa) and thermal stability. In terms of the PG resin synthesis, a possible mechanism is proposed according to the characterization results.
研究领域:
材料科学
·
绿色化学
✓ 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）