ADVANCED FUNCTIONAL MATERIALS
·
2019
·Vol. 29
·期 27
·1901721
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IF 15.621
Hang Yang,Chenghai Li,Meng Yang,Yudong Pan,Qianfeng Yin,Jingda Tang,Hang Jerry Qi,Zhigang Suo
Many recently demonstrated devices require the integration of hydrogels and hydrophobic elastomers. Extrusion print is a promising method for rapid prototyping but existing approaches do not fulfill a basic requirement: print integrated structures of a hydrogel and an elastomer, in arbitrary sequence, with strong adhesion. This paper demonstrates an approach to fulfill this requirement. During print, the ink of each material flows through a nozzle under a pressure gradient but retains the shape against gravity and capillarity. During cure, covalent bonds form to link monomer units into polymer chains, crosslink the polymer chains into the polymer networks of the hydrogel and the elastomer, as well as interlink the two polymer networks into an integrated structure. The approach covalently interlinks the hydrogel network and the elastomer network by adding an interlink initiator in one of the inks. An adhesion energy above 5000 J m −2 is demonstrated. Printed morphing structures survive swelling and printed artificial axons survive repeated hits of a hammer. This approach opens a road to the development of soft devices for broad applications in medicine and engineering.
研究领域:
生物医学工程
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材料科学
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DOI
高影响因子
Journal of the Australian Ceramic Society
·
2020
·Vol. 57
·期 1
·97-105
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IF 1.307
Zhou Kui,Zou Jiawei,Chi Wenchao,Lin Yanjun,Li Wenchao,Cao Chuanliang
A new and precise control printing method was developed for preparing homogeneous microspheres. Hydroxyapatite-sodium alginate (HA-SA) mixed suspension was used as printing material and CaCl 2 solution was used as solidifying liquid to prepared ceramic microspheres by pneumatic extrusion printing technology. By adjusting the positive pressure, dwell time, and hydroxyapatite concentration, the influence of each parameter on the shape of printed microspheres was studied, and the suitable preparation parameters were determined. Then, the microspheres with uniform particle size distribution were successfully prepared in large quantities by selecting appropriate printing parameters. Then, the microspheres were dried and sintered at different temperatures. During the drying and sintering process, the microspheres showed obvious shrinkage, but still keep good sphericity. The phases of sintered microspheres are hydroxyapatite and calcium oxide. The microstructure shows typical hydroxyapatite grain characteristics.
研究领域:
材料科学
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生物医学工程
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DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2022
·
IF 9.221
Xiang Peng,Jiabei Liu,Yuming Tan,Rong Mo,Yong Zhang
High-performance gas sensors have huge application prospects and consumer demands in environmental monitoring, public security and other fields. Nevertheless, the conductive type metal oxide gas sensors prepared by traditional coating or dropping technology encounter challenges in low detection limit and excellent replication, hardly meeting the actual needs of trace harmful gas detection and mass production. Here, a uniform and high-quality CuO sensing film is formed quickly and efficiently by inkjet printing technology , which is expected to realize mass preparation of high-performance formaldehyde sensors. The CuO sensor can reach as low as 50 ppb formaldehyde detection limit, satisfying the monitor needs of the World Health Organization’s specified value 80 ppb. In addition, the gas sensors in each batch exhibit outstanding repeatability and stability with small deviation, and the relative mean deviations toward formaldehyde in the aspect of response, response and recovery times are all about only 5% between batches. The controllable micro-nano-level film thickness and uniform surface achieved by inkjet printing technology are the compelling reasons for low detection limit and superb reproducibility of gas sensors. Our work can offer a theoretical and experimental basis for large-scaled production of high-performance gas sensors from research to practical application.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
RSC Advances
·
2024
·Vol. 14
·期 2
·1501-1512
·
IF 3.9
Dingyong Liu,Hongjie Cai,Weiming Zhou,Dandan Lei,Changlin Cao,Xinshu Xia,Liren Xiao,Qingrong Qian,Qinghua Chen
Photocatalysis is widely acknowledged as an efficient and environmentally friendly method for treating dye-contaminated wastewater. However, the utilization of powdered photocatalysts presents significant challenges, including issues related to recyclability and the potential for secondary pollution. Herein, a novel technique based on 3D printing for the synthesizing of iron oxide (Fe2O3) involving chlorella was presented. Initially, chlorella powders were immobilized within acrylonitrile butadiene styrene (ABS) and thermoplastic polyurethane (TPU) substrate plastics using melt extrusion technology. Subsequently, these composite materials were transformed into ABS/TPU/chlorella skeletons (ATCh40), through fused deposition molding (FDM) technology. The integration of Fe2O3 onto the ATCh40 (ATCh40-Fe2O3) skeletons was accomplished by subjecting them to controlled heating in an oil bath. A comprehensive characterization of the synthesized materials confirms the successful growth of Fe2O3 on the surface of 3D skeletons. This strategy effectively addresses the immobilization challenges associated with powdered photocatalysts. In photocatalytic degradation experiments targeting methyl orange (MO), the ATCh40-Fe2O3 skeletons exhibited a remarkable MO removal rate of 91% within 240 min. Under conditions where the pH of MO solution was maintained at 3, and the ATCh40-Fe2O3 skeletons were subjected to a heat treatment in a 150 °C blast drying oven for 2 hours, the degradation rate of MO remained substantial, achieving 90% removal after 6 cycles. In contrast, when the same synthetic procedure was applied to ABS/TPU (AT) skeletons, the resulting product was identified as α-FeOOH. The MO removal rate by the AT-α-FeOOH skeletons was considerably lower, reaching only 49% after 240 min. This research provided a practical approach for the construction of photocatalytic devices through the use of 3D printing technology.
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
Coatings
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2023
·Vol. 13
·期 12
·2071
·
IF 3.4
Ruijuan Sang,Fei Yang
Calcium carbonate (CaCO3) is a widely used inorganic filling pigment used in coatings, and it is known for its nontoxicity, odorlessness, and environmental friendliness. The application of CaCO3as a filler can effectively reduce raw material costs, and optimization of the filler formula enhances the coating film performance. In this study, oak planks were prepared as substrates for water-based inkjet printing. Three composite water-based primers with different TiO2-to-CaCO3ratios and a polyurethane resin primer were used to prepare the substrate for the printing surface. The properties of the water-based primer coating and the water-based inkjet printing coating were characterized and analyzed via Fourier-transform infrared spectroscopy, video-based contact angle analysis, and environmental scanning electron microscopy. The aim was to investigate the effects of the composite waterborne primer coatings on the ink absorption and coloring properties of the interface between wood substrates and waterborne inkjet coatings. Sample WDCC-3#, with a TiO2-to-CaCO3ratio of 15:35, exhibited the most comprehensive characteristics. The wood surface coated with 15 g/m2of the polyurethane resin primer and 15 g/m2of WDCC-3#exhibited a 5.8° contact angle of the water-based ink, first-grade adhesion, 4 H hardness, 70.52 whiteness value, and a roughness of ~2.33. The surface of the printed water-based inkjet-coated substrate was uniform and smooth, featuring rounded and transparent edges of the water-based ink droplets and a small CMYK color difference value. Therefore, the composite waterborne primer, incorporating TiO2and CaCO3in specific ratios, can be effectively combined with waterborne polyurethane primer coatings. This combination significantly improves the interfacial compatibility between the oak surface and waterborne inkjet coatings, leading to enhanced ink absorption on the oak plank surface during printing. This results in a high degree of color reproduction and clearer printed images. Overall, this study provides valuable insights for the development of primer programs for the industrial application of waterborne digital inkjet technology on wood products.Keywords:waterborne primer;calcium carbonate;water-based ink;oak plank;inkjet printing technology
研究领域:
材料科学
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木材科学与技术
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DOI
高影响因子
DESALINATION
·
2025
·
IF 9.8
Xinyu Hu,Hongli Xie,Hao Wang,Liguo Shen,Renjie Li,Hongjun Lin,Leihong Zhao,Genying Yu
Efficient oil/water emulsion separation remains a critical challenge in industrial wastewater treatment due to the stability of emulsified oil droplets and the complexity of traditional membrane modification techniques. This study introduced a novel approach by employing a green, convenient, and controllable inkjet printing technique to fabricate a new inversely beetle-inspired hydrophobic zeolitic imidazolate framework-67 (ZIF-67) nanoparticle-modified tannic acid (TA)‑titanium (IV) bilayer structure on a polyvinylidene fluoride (PVDF) substrate. The resulting PVDF/TA-Ti(IV)/ZIF-67 membrane significantly enhanced the separation efficiency of oil/water emulsions. The TA-Ti(IV) layer not only enhanced the adhesion and uniform distribution of ZIF-67 but also minimized reagent consumption, simplifying the fabrication process. The hydrophobic ZIF-67 particles on the membrane served as localized active sites, facilitating the coalescence of small oil droplets within the emulsion, thus achieving effective demulsification and transforming stable oil-water emulsions into easily separable, unstable emulsions. This innovative membrane demonstrated optimal flux and rejection rates in oil/water emulsion separation. Its water flux exceeded 311.0 L·m −2 ·h −1 in gasoline, diesel, and soybean oil emulsions, approximately 5.5 times that of the unmodified PVDF membrane, while maintaining an oil rejection rate of over 99.6 %. Remarkably, the PVDF/TA-Ti(IV)/ZIF-67 membrane retained over 99 % separation efficiency after six filtration cycles, underscoring its exceptional antifouling performance and long-term operational stability. The innovative membrane developed in this study offers a cost-effective, scalable, and environmentally sustainable solution for large-scale oil/water emulsion treatment. Its bio-inspired wetting structure significantly enhances flux, oil rejection, and antifouling capabilities, marking a major advancement in industrial water treatment applications.
研究领域:
材料科学
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环境工程
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产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
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2021
·Vol. 31
·期 18
·2100211
·
IF 18.808
Weijing Yao,Qingyong Tian,Jiaqi Shi,Chengsheng Luo,Wei Wu
Expanding the practical application range of self-healing materials has become an important challenge for developing smart materials. Herein, the synthesis of printable, triple-mode fluorescence responsive, and colorless self-healing elastomers, formed by the combination of disulfide cross-linked polyurethane (PU) polymers, carbon dots (CDs) down-conversion fluorescence materials, and lanthanide ions doped upconversion fluorescence materials. The PU elastomers with optimal mechanical properties and good restorability (recover large strain of 500% after relaxation at room temperature (R.T.) for 2 h) are selected to incorporate CDs for fabricating fluorescence responsive elastomers (denoted as PU-CDs). Significantly, the prepared PU-CDs exhibit not only superior tensile strength and toughness (20.95 MPa and 85.13MJ m –3 , respectively) than the previously reported R.T. self-healing elastomers but also show good self-healing properties and achieve blue fluorescence emissions under the ultraviolet excitation. Furthermore, a series of dual-mode fluorescence patterns based on formulated core@shell structural upconversion inks are prepared on the transparent PU-CDs elastomers by a directly screen-printing method. Self-healing and integrating a series of fluorescence patterns and damaged electrical patterns can also be accomplished successfully. The designed self-healing materials provide new ideas and important guidance for developing and applying the next generation of smart materials.
研究领域:
材料科学
·
化学
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智能材料
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DOI
高影响因子
CHEMICAL PHYSICS LETTERS
·
2025
·
IF 3.1
Ziqi Zhong,Borui Du,Guowu Zhan,Jingran Xiao
Herein, the 3D printing technology is harnessed as a new and flexible strategy to fabricate a structural-parameter adjustable 3D-structured Ti-Fe 2 O 3 photoanode. The Ti alloy was discovered to be practicable during the synthesis of Ti-Fe 2 O 3 and enlisted as a substrate material for crafting a conical-array patterned Ti-Fe 2 O 3 photoanode. The conical array fashions an angle between the incident light (longitudinal side) and the photogenerated charge transport (transverse side), along with a considerably augmented light-receiving area. Significantly, the charge separation efficiency progressively escalates as the cone height augments. This undertaking accentuates the importance of modulating the parameter of a 3D-structured Fe 2 O 3 photoanode.
研究领域:
材料科学
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能源科学
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产品关联
DOI
高影响因子
Science Bulletin
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2022
·
IF 20.577
Pengxiang Zhang,Yushui Fu,Xin Zhang,Xihua Zhang,Bao-Wen Li,Ce-Wen Nan
Chemically exfoliated nanosheets have exhibited great potential for applications in various electronic devices. Solution-based processing strategies such as inkjet printing provide a low-cost, environmentally friendly, and scalable route for the fabrication of flexible devices based on functional inks of two-dimensional nanosheets. In this study, chemically exfoliated high- k perovskite nanosheets (i.e., Ca 2 Nb 3 O 10 and Ca 2 NaNb 4 O 13 ) are well dispersed in appropriate solvents to prepare printable inks, and then, a series of microcapacitors with Ag and graphene electrodes are printed. The resulting microcapacitors, Ag/Ca 2 Nb 3 O 10 /Ag, graphene/Ca 2 Nb 3 O 10 /graphene, and graphene/Ca 2 NaNb 4 O 13 /graphene, demonstrate high capacitance densities of 20, 80, and 150 nF/cm 2 and high dielectric constants of 26, 110, and 200, respectively. Such dielectric enhancement in the microcapacitors with graphene electrodes is possibly attributed to the dielectric/graphene interface. In addition, these microcapacitors also exhibit good insulating performance with a moderate electrical breakdown strength of approximately 1 MV/cm, excellent flexibility, and thermal stability up to 200 ℃. This work demonstrates the potential of high- k perovskite nanosheets for additive manufacturing of flexible high-performance dielectric capacitors.
研究领域:
材料科学
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电子工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2019
·
IF 3.45
Heng Zhang,Yong Yang,Bin Liu,Zhengren Huang
SiC-based ceramics with periodic structure were successfully fabricated by extrusion freeforming 3D printing technology and liquid silicon infiltration process. The ceramic slurries containing SiC , carbon black, chopped carbon fiber were firstly prepared with the appropriate viscosity and rheological properties, then were formed by extrusion freeforming 3D printing technology and densified by liquid silicon infiltration sintering successively, to acquire SiC ceramic composites components. The microstructure and morphology of green parts and sintered bodies were observed. Chopped carbon fibers were found to be oriented distribution in SiC ceramic composites parts. The sintered bodies exhibited maximum flexural strength of 300 MPa and sintered linear shrinkage below 2%. The manufacturing method has demonstrated big potential to fabricate ceramic components with personalized complex structure.
研究领域:
材料科学
·
先进制造
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产品关联
DOI
高影响因子
COMBUSTION AND FLAME
·
2021
·
IF 4.185
Yaofeng Mao,Qianqian He,Jun Wang,Zijian Li,Zhijian Yang,Fude Nie,DunJu Wang
Polytetrafluoroethylene/Aluminum (PTFE/Al) composite with high energy density and combustion reaction performance has received widespread attention in the field of propellants, explosives, and pyrotechnics. In order to precisely control combustion reaction and energy output performance, gradient structured PTFE/Al composite (mass and diameter gradient) has been designed and constructed through 3D printing technology . PTFE/Al ink is prepared by acoustic resonance mixing to control rheological properties (viscosity and modulus) for 3D printing technology. The largest reaction heat (7749.95 J/g) and burning rate (~130 mm/s) are achieved for gradient lines with diameter of 2.42 mm and mass ratio of 60:40 (PTFE/Al). Moreover, the progressive change from steady combustion to deflagration containing three stages of pressure output is observed for gradient structured PTFE/Al cylinder. This work reveals that gradient structure could provide new strategy to tune energy output and combustion performances, which can promote the practical application of PTFE/Al reactive materials.
研究领域:
材料科学
·
能源工程
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Yulong Wang,Xiuwen Xu,Guansheng Xing,Shanxiao Lin,Yurou Yan,Quan Zhou,Jianmei Chen,Wenjuan Zhu,Bing Chen,Shujuan Liu,Qiang Zhao
Halide perovskites hold great potential in developing next-generation X-ray detectors. However, preparing high-quality and thick perovskite films in a way compatible with a thin-film transistor (TFT)-integrated X-ray flat-panel detectors (XFPDs) remains challenging. Here, by engineering ink with effective printability and shape fidelity, direct ink writing (DIW) is developed as a new approach to printing a unique single-crystal-assembled perovskite (SCAP) thick film. In contrast to polycrystalline grains consisting of randomly orientated crystal domains, the SCAP is made of tightly packed crystals with well-defined crystal facets, showing 3–4 orders of magnitude lower trap density (4.48 × 10 12 cm −3 ). Consequently, the SCAP X-ray detectors offers the state-of-the-art detection performance (sensitivity-to-dark current ratio: 1.26 × 10 11 µC Gy air −1 A −1 ), a low detection limit (114.2 nGy air s −1 ), and negligible baseline drift (0.27 fA cm −1 s −1 V −1 ). Furthermore, the XFPD based on a 64 × 64 pixelated TFT array realizes high-resolution digital radiography, opening a new avenue for further development of perovskite X-ray detectors.
研究领域:
材料科学
·
电子工程
·
医学影像
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）