MICROCHEMICAL JOURNAL
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2025
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IF 5.1
Shuangshou Wang,Jianing Hui,Yangrui Si,Tianyou Geng,Chunyan Yang,Yanshang Kang,Daojin Li,Mingfu Ye,Tingxuan Yan,Caibo Yue
Herein, a multi-use strategy was initiated for visual point-of-care tests, adulteration identification, removal and recycling of dyes in both environmental and food samples using hydrophobic deep-eutectic solvent (HDES)-coated paper as an all-in-one device. HDES, which composed by decylic acid and tetraoctylammonium bromide, was prepared as a sorbent for dyes, then paper devices were facilely fabricated by coating HDES onto printing papers. Due to the coexistence of carbon chains, carboxyl and quaternary ammonium groups, HDES-mediated dyes extraction was of fine versatility through electrostatic interaction and hydrophobic effect, by which the recycling rate of dyes reached 96.5 % at only 5 min of extraction time. Colorimetry of dyes in simulated dye effluents and drinks could be ended as fast as 10 s with LODs at 10 −3 mg/mL level, and the colorimetric results were highly agreed with those generated by instrumental techniques and smartphone-based image analysis. Identifications of fruit/vegetable juices and chili oil adulterated with the same-color artificial dyes were also realized in a single paper strip, giving an identification capacity low as to 1.5 × 10 −3 mg/mL. The success of these cases enlightens a new direction for HDES-based multi-purpose application.
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FOOD CHEMISTRY
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2024
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IF 8.5
Tian Shi,Jinyuan Zhang,Fuhua Gao,Da Cai,Yueli Zhang
The addition of Sudan dyes with carcinogenic effects to food threatens human health. Herein, a ratiometric fluorescence strip consisting of core–shell upconversion particles (NaYF 4 :Yb,Tm@NaYF 4 :Yb,Er), metal–organic frameworks and dual-template molecularly imprinted polymers was developed to selectively and sensitively detect four Sudan dyes based on inner filter effect (detection time only takes 8 min). The high adsorption capacity of metal–organic frameworks and the greater overlap between the emission of NaYF 4 :Yb,Tm@NaYF 4 :Yb,Er and the absorbance of four Sudan dyes enable the signal responses to be more sensitive. The limits of detection in chilli powder samples are as low as 29.87 ng/g, 37.55 ng/g, 47.89 ng/g and 51.02 ng/g, with satisfactory recovery (93.32–103.4%) and minor relative standard deviations (≤4.3%). This method broadens the idea for low-cost and portable detection of multiple illegal additives in complex substrates with high selectivity and sensitivity based on one kind of fluorescent strip.
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ACS Applied Materials & Interfaces
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2024
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IF 8.3
Yifan Cheng,Shilu Zhu,Hui Ma,Shengting Zhang,Kun Wei,Shiyu Wu,Yongkang Tang,Ping Liu,Tingting Luo,Guangli Liu,Runhuai Yang
The potential applications of hydrogel microrobots in biomedicine and environmental exploration have sparked significant interest in understanding their behavior under multiphysical fields. This study explores the multimodal locomotion and dynamic interaction of hydrogel microrobots at the air–water interface under magnetic and light stimuli. A pair of hydrogel microrobots at the air–water interface exhibits a transition from cooperative, combined rotation to interactive behavior, involving both rotation and revolution under the influence of a rotating magnetic field (RMF), and a shift from attraction to separation under near-infrared (NIR) light, demonstrating the dynamic modulation of their behaviors in response to different stimuli. Notably, the behavioral patterns of multiple hydrogel microrobots under multiphysical fields indicate that NIR light can enhance interactive motion behaviors under RMFs and extend the range of motion trajectories. Dynamic models for each condition are established and analyzed based on dynamic equilibrium, and their behavior can be modulated by parameters such as magnetic particle concentration, magnetic field frequency, and NIR light intensity. This work introduces a novel strategy for regulating and controlling the dynamic behaviors of hydrogel microrobots, offering new insights into their multiphysical field locomotion.
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International Journal of Smart and Nano Materials
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2024
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IF 4.5
Xinghong Deng,Guangyu Zhang,Yi Mo,Zhiyuan Huang,Dekai Zhou,Jing Qiao,Longqiu Li
Multi-material additive manufacturing (MMAM) takes full advantage of the ability to arbitrarily place materials of additive manufacturing technology, enabling immense design freedom and functional print capabilities. Among MMAM technologies, projection stereolithography (PSL) exhibits a great balance of high resolution and fast printing speed. However, fabrication accuracy of multi-material PSL is hindered by large overcure used to strengthen interfacial bonding weakened by chemical affinity and material-exchange process. We present a novel multi-step exposure method for multi-material PSL process to overcome this shortcoming. Firstly, the whole layer is moderately exposed producing overcure of single-material PSL level to generate geometries. Then weakened interfaces are strengthened individually with additional steps of exposure. The multi-step exposure is integrated into the already efficient materials printing order of multi-material PSL process. Curing depth and overcure of photocurable resins are modeled and characterized. Exposure required to achieve sufficient interfacial bonding of single-material interfaces built through material-exchange process and multi-material interfaces with altering materials printing order is determined with tensile tests. Microfluidic channels are used to compare fabrication accuracy of traditional single-step exposure and our multi-step exposure method. This method can be widely applied in multi-material PSL to improve fabrication accuracy in a variety of applications including microfluidic devices.
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ACS Applied Materials & Interfaces
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2025
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IF 8.2
Xinling Hu,Jitian Chen,Zijian Yan,Du Nie,Fuwang Guan,Chenyang Shi,Naibo Lin
Multifunctional hydrogels with excellent adhesion, biodegradability, and conductivity are essential for overcoming the obstacles of postoperative secondary injury, flexible sensing instability, and so on. Herein, we develop a multifunctional silk fibroin (SF) hydrogel modified with poly(acrylic acid). Owing to the stable chemical cross-linking network and the abundant carboxylic acid groups of the SF network, the SF hydrogel exhibits a high tensile strength of 74.34 kPa due to sufficient cohesion and interfacial interactions. Additionally, the tensile strain reaches a maximum of 414.6%, the compressive strength is 0.9 MPa, and the shear adhesive strength for pig skin tissues is as high as 64 kPa. Compared with most hydrogels, our multifunctional SF hydrogel with a low swelling ratio provides excellent adhesion, biodegradation, and conductivity, which shows advantages in terms of invasive tissue sealing. The use of self-adhesive SF hydrogels as conductive hydrogels in flexible sensors also benefits the collection of physiological electricity and human motion signals in the field of wearable and implantable electronic devices.
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MATERIALS & DESIGN
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2025
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IF 7.9
Zhengda Chen,Xiangjun Zha,Cheng Wen,Kun Li,Jigang Huang,Wei Pu
Multi-material objects offer enhanced functionality by strategic integration of different materials, allowing tailored properties to meet specific performance requirements. Digital light processing (DLP) 3D printing, featuring high resolution and fast speed, has emerged as a leading method for creating single-material structures. However, it faces significant limitations when producing multi-material objects in the traditional layer-by-layer matter, as the approach requires frequent material switching, making the process prohibitively time-consuming. To address this challenge, we present a capillarity assisted multi-material 3D printing (CMM-3DP) method that leverages capillary pressure to generate multi-material objects block by block. This innovative approach achieves printing speeds with over a hundred times faster than the current multi-material DLP 3D printing. CMM-3DP demonstrates remarkable versatility, accommodating not only photosensitive materials such as hydrogels, polymers, and elastomers but also thermal curable resins and liquid metals—materials previously incompatible with conventional DLP 3D printing. By eliminating the layer-by-layer material switching process, CMM-3DP allows multi-material objects to be fabricated while avoiding both intricate motion system and resin contamination issue. Using a body centered cubic (BCC) array as the capillary structure, our research demonstrates that CMM-3DP can successfully create multi-material architectures ranging from micrometer to centimeter scale. Moreover, the versatility of CMM-3DP is validated by successful fabrication of various applications, including stimuli-responsive objects, flexible actuator, electric circuit, and biomimetic human hand. Our method substantially enhances the multi-material fabrication capability of DLP 3D printing, facilitating potential applications with multi-material devices.
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Virtual and Physical Prototyping
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2025
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IF 8.8
Zhengda Chen,Dawei Fu,Xiangjun Zha,Huan Qi,Jigang Huang
Multi-material objects enable the integration of diverse properties and functionalities through precise three-dimensional material arrangement. Recent research highlights additive manufacturing as a pioneering approach for fabricating these complex structures, offering unprecedented control over spatial material distribution. However, it faces significant limitations when producing multi-material objects in the traditional layer-by-layer manner, as the approach requires frequent material switching, making the process prohibitively time-consuming. In this work, we present a two-step multi-material additive manufacturing strategy which achieves the fabrication of multi-material objects by capillary-driving the materials into the pre-printed framework and curing them with external energy sources. This strategy fundamentally eliminates the frequent material switching that occurs in traditional multi-material printing, thereby significantly enhancing the manufacturing efficiency of multi-material objects. Moreover, this strategy accommodates materials previously incompatible with conventional 3D printing. Tailored mechanical properties of multi-material structures can be achieved by adjusting the porosity and position of the framework. By adding stimulus-responsive materials into the multi-material structure, the strategy also enables 4D printing. This strategy opens a new avenue for the development of multi-material additive manufacturing.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
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IF 4.9
Qichao Zhang,Xu Liu,Yishan Jiang,Binbin Zhang
The corrosion protection and ice-over delay of aluminum alloys have always been pressing issues. Lotus-inspired superhydrophobic materials show great potential in the field of corrosion prevention and delayed icing, but they are currently prone to failure due to wetting and adhesion by low surface tension liquids. In this paper, we constructed a superamphiphobic (superhydrophobic and superoleophobic) organosilane-grafted attapulgite (OG-ATP) coating on 5083 aluminum alloy substrates using ATP, tetraethyl orthosilicate (TEOS), and 1 H,1 H,2 H,2 H-perfluorooctyltriethoxysilane (PFAS) through hydrolysis-condensation reaction and spray-coating technique. The coating exhibits contact angles greater than 150º and sliding angles less than 10º for water, glycerol, ethylene glycol, peanut oil, and even n-hexadecane with surface tension@20 ºC of 27.5 mN/m. Through studying surface morphologies , chemical compositions, electrochemical behaviors, self-cleaning, and anti-icing performance, it was found that the R ct and |Z| 0.01 Hz of the protected aluminum alloy increased by four orders of magnitude with a corrosion inhibition efficiency of 99.99 %, demonstrating excellent anti-corrosion functionality. Additionally, icing test results at -5 °C, -10 °C, and -15 °C show that the prepared coating exhibits significant delayed icing performance. We believe that the integration of properties such as water-oil repellency, self-cleaning, anti-corrosion, and anti-icing will enable superamphiphobic materials to demonstrate enormous application prospects in various fields.
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FOOD CHEMISTRY
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2020
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IF 6.306
Yaoping Hu,Zhijin Gao,Junfei Luo
Facile detection of malachite green (MG), a toxic dye, in aquaculture is urgently demanded for environment and food safety. Herein, we design a novel fluorescent probe, namely red emissive Se,N,Cl-doped carbon dots (CDs), to accurately determinate MG. CDs are prepared by hydrothermal treatment of selenourea and o-phenylenediamine in HCl solution. This material exhibits excitation-independent dual emissions at 625 and 679 nm, with a high quantum yield of 23.6%. A selective and sensitive fluorescent sensor toward MG is established based on inner filter effect, because both the excitation and emission light of CDs can be strongly absorbed by MG. The fluorescence quenching of CDs is linear to the MG concentration over the range of 0.07–2.50 μM with a low detection limit of 21 nM. Trace-level analysis of MG in fish tissue is successfully explored, demonstrating the great potential of the proposed sensor for MG monitoring in aquatic products.
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JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
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2025
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IF 7.5
Yuhao Guo,Xiangjun Zha,Xinyu Huang,Zhicheng Cheng,Tingxian Ling,Jigang Huang
Top-down digital light processing (DLP) 3D printing is a promising approach for high-resolution and multi-material fabrication. However, the unconstrained resin surface often leads to curing outside the focal plane during the printing process, resulting in significant losses in manufacturing accuracy. To address this defocusing issue, we propose an improved top-down DLP 3D printing method that enables real-time calibration of the resin level, ensuring each layer is printed precisely on the focal plane. This approach reduces the deviation between the curing plane and the focal plane from hundreds of microns to just a few microns, significantly enhancing printing resolution and surface finish. Additionally, the method allows for the fabrication of multi-material objects with gradual interfaces in a single vat, improving bonding strength between different materials. Moreover, by controlling the resin level, the proposed technique facilitates material switching between multiple vats while maintaining a constant curing plane, enabling the creation of high-fidelity multi-material structures. This innovative strategy advances the field of DLP 3D printing by offering a rapid, precise, and versatile solution for high-resolution and multi-material fabrication.
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JOURNAL OF CHROMATOGRAPHY A
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2015
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IF 4.169
Xiaoyu Xie,Liang Chen,Xiaoyan Pan,Sicen Wang
Magnetic molecularly imprinted polymers (MMIPs) have become a hotspot owing to the dual functions of target recognition and magnetic separation. In this study, the MMIPs were obtained by the surface-initiated reversible addition fragmentation chain transfer (RAFT) polymerization using Sudan I as the template. The resultant MMIPs were characterized by transmission electron microscope, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, vibrating sample magnetometer, and X-ray diffraction. Benefiting from the controlled/living property of the RAFT strategy, the uniform MIP layer was successfully grafted on the surface of RAFT agent-modified Fe 3 O 4 @SiO 2 nanoparticles, favoring the fast mass transfer and rapid binding kinetics. The developed MMIPs were used as the solid-phase extraction sorbents to selectively extract four Sudan dyes (Sudan I, II, III, and IV) from chili powder samples. The recoveries of the spiked samples in chili powder samples ranged from 74.1 to 93.3% with RSD lower than 6.4% and the relative standard uncertainty lower than 0.029. This work provided a good platform for the extraction and removal of Sudan dyes in complicated matrixes and demonstrated a bright future for the application of the well-constructed MMIPs in the field of solid-phase extraction.
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ENGINEERING STRUCTURES
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2025
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IF 6.4
Yafei Wang,Weiqian Liang,Wei Cai,Jingyi Zhang,Weijia Guo,Biyun Qi,He Zhang,Haibao Lu,Zhen Ding
4D printing marks a significant leap beyond traditional 3D printing, enabling structures to morph and adapt dynamically to changing environmental conditions. Research efforts are increasingly being focused on this promising technology. Existing 4D printing methods, however, typically rely on shape-changing mechanisms that operate after material solidification in the 3D printing process, necessitating additional energy inputs or even manual mechanical interventions. In this study, we introduce a novel 4D printing approach that employs a specially designed dual-stage curing ink optimized for grayscale Digital Light Processing (g-DLP) 3D printing. This novel approach not only grants precise, on-demand control over the material properties of the printed structures but also seamlessly integrates shape transformation into the thermal curing stage of the 3D printing process, eliminating the need for extra energy or manual steps. Furthermore, these transformed shapes demonstrate exceptional robustness and permanence, as evidenced by our experimental results. We conduct a comprehensive investigation into the grayscale-dependent mechanical properties of this ink and highlight its potential applications through auxetic metamaterial lattice structures. The underlying mechanism behind this direct shape morphing during thermal curing is explored in depth, and effectively demonstrated in achieving desired shape transformations across various printed structures. The good agreement between our experimental results and simulations provides robust validation of our methodology. Our study provides a reliable framework for designing and optimizing 4D-printed structures with tailored properties and deformation behaviors, paving the way for future applications in various fields.
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危险品化学品经营许可证（带存储）