JOURNAL OF MATERIALS SCIENCE
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2024
·Vol. 59
·期 31
·14313-14327
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IF 3.5
An Boyuan,Zhang Dongjie,Liu Yuyan,Fan Zhimin,Tan Huifeng,Xie Zhimin
Ti 3 C 2 T x (MXene)-based composites are considered electromagnetic wave absorption (EMA) materials due to their dielectric properties, microstructure, and synergistic interactions with magnetic particles. A better understanding of the effect of the MXene content in composites on the EMA performance is essential for their application, yet it remains unclear. Here, MXene/PU@Fe 3 O 4 (MPF) microspheres with different MXene contents were produced through the incorporation of magnetic particles and multiple electrostatic self-assembly processes. The results show that when the molar ratio of MXene to Fe 3 O 4 is less than 0.5:1, the EMA performance of the MPF microspheres gradually increases with increasing MXene content. MPF microspheres exhibit the best EMA performance when the molar ratio of MXene to Fe 3 O 4 is 0.5:1, with a maximum reflection loss (RL) of 44.0 dB and an effective absorption bandwidth (EAB) of 2.30 GHz. Further increases in this ratio led to an increase in the EAB but a slight reduction in the maximum RL. Additionally, the combination of the same MXene and Fe 3 O 4 nanoparticle ratio had no significant effect on the EMA performance. We expect that this work will enrich the EMA performance research on MXene-based composites.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
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IF 5.4
Shixu Li,Hui Zhao,Pengpeng Bai,Yonggang Meng,Yu Tian
Magnetorheological fluid (MRF), a smart suspension that respond to external magnetic fields, exhibits potential in engineering fields but is limited by its low mechanical properties and insufficient wear resistance. In this study, a magnetic biochar composite material (NiFe 2 O 4 /biochar) was proposed to ameliorate the magneto-induced yield stress and tribologcial characteristic of MRF. The cooperativity between magnetism of nanoscale particle and lubrication of biochar helps to enhance the suspension stability, dynamic yield stress, and friction characteristics of MRF. A series of tests for MRF were used to verify the effectiveness of magnetic composite materials. Experimental results showed that the addition of 3 % NiFe 2 O 4 /biochar to the MRF significantly improved the dynamic yield stress by 26.13 % under a magnetic flux density of 400 mT. Furthermore, the composite material improved the anti-settling stability of the MRF, reducing the height of the supernatant by 31.64 % after 12 h. Tribological tests revealed that the composite material also enhanced wear resistance, as evidenced by a reduction in both the friction coefficient (from 0.251 to 0.241) and the wear scar diameter at a 3 % mass fraction. These findings suggest that NiFe 2 O 4 /biochar composite materials are an effective strategy for improving the performance of MRF, making it more suitable for diverse engineering applications, particularly in environments requiring enhanced stability and wear resistance.
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National Science Review
·
2025
·
IF 17.1
Yang Qiucheng,Yang Jinlong,Hu Yuhao,Niu Xiaopeng,Liu Zhenda,Zou Jian,Guo Junchang,Xiong Hao,Gu Xingshi,Yang Li,Yu Fanfei,Zhu Shunpeng,Ye Ming,Yi Xian,Deng Xu
Fracture-based interfacial breakage has shown promise in efficiently removing ice accretion. Here, intrigued by the response of human skin to stress-induced deformation, we present a strategy to design tough-skin de-icing surfaces (TSDSs) that actively manipulate crack-induced ice-substrate interfacial breakage during ice removal. This design leverages the surface instability of thin films to generate extensive wrinkling at the ice-substrate interface, which serves as crack initiation sites. We demonstrate efficient ice shedding by creating wrinkles at two length scales, macro wrinkles for actively initiate the cracks at the rim of ice and micro wrinkles for further promoting stress concentration at the ice-substrate interface. The TSDS (τ < 10 kPa) displays excellent durability and weather resistance, achieving a large-area ice self-shedding effect solely through gravity. The universality of the proposed mechanism is verified on multiple materials and potential applications. This design concept offers valuable insights into creating durable de-icing materials with enhanced ice-shedding properties.
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ANALYTICA CHIMICA ACTA
·
2024
·
IF 5.7
Wenjie Zhu,Hong Qian,Shengya Cao,Wei Xia,Xilong Wang,Jing Jin,Xin Wang,Hao Zhang,Dongsheng Liu,Ying Chen
Background The early detection of Hepatocellular Carcinoma (HCC) is crucial for improving patient survival rates.Early diagnosis of HCC can significantly enhance treatment outcomes and reduce disease progression. Antigen detection of tumor markers is one of the important diagnostic methods for HCC. However, Traditional antigen detection methods often rely on heavy detection equipment, involve lengthy turnaround times, and must be conducted in laboratory settings. Therefore, there is a clear need for a portable, low-skill, rapid sample-to-result detection method for early HCC biomarkers. Results We propose a new platform based on electrowetting-on-dielectric digital microfluidic(EWOD-DMF) for the detection of early-stage HCC biomarkers, enabling the quantitative measurement of Alpha-Fetoprotein (AFP), the proportion of AFP-L3 in total AFP (AFP-L3%), and Des-Gamma-Carboxy Prothrombin (DCP). First, serum samples are processed through the microfluidic system, achieving the separation of AFP-L3 within 10 min. Next, immunoassays are performed within 15 min, using magnetic particles to capture biomarkers such as AFP, AFP-L3, and DCP, followed by enzymatic reactions that generate detectable signals. Each chip can simultaneously detect three biomarkers from five different samples, allowing for a total of fifteen targets to be tested, with only approximately 2.4 μL of serum required for each biomarker detection. Ultimately, data are analyzed with dedicated software to quantitatively measure the HCC biomarkers. The detection limits for AFP or AFP-L3 and for DCP are 0.24 ng/mL and 1.89 ng/mL, respectively. Significance This study presents a EWOD-DMF platform for early-stage HCC diagnosis, capable of simultaneously detecting multiple samples and biomarkers, thus improving detection efficiency and diagnostic accuracy. Moreover, the platform has POCT capability, with advantages in portability and cost-effectiveness, providing clinicians and primary healthcare institutions with a fast and convenient solution for early-stage HCC diagnosis.
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Advanced Science
·
2024
·
IF 14.3
Fugang Liu,Jiaqing Liu,Yang Luo,Siyi Wu,Xu Liu,Haoran Chen,Zhewen Luo,Haitao Yuan,Feng Shen,Fangfang Zhu,Jian Ye
Metabolic dysregulation is a key driver of cellular senescence, contributing to the progression of systemic aging. The heterogeneity of senescent cells and their metabolic shifts are complex and unexplored. A microfluidic SlipChip integrated with surface-enhanced Raman spectroscopy (SERS), termed SlipChip-SERS, is developed for single-cell metabolism analysis. This SlipChip-SERS enables compartmentalization of single cells, parallel delivery of saponin and nanoparticles to release intracellular metabolites and to realize SERS detection with simple slipping operations. Analysis of different cancer cell lines using SlipChip-SERS demonstrated its capability for sensitive and multiplexed metabolic profiling of individual cells. When applied to human primary fibroblasts of different ages, it identified 12 differential metabolites, with spermine validated as a potent inducer of cellular senescence. Prolonged exposure to spermine can induce a classic senescence phenotype, such as increased senescence-associated β-glactosidase activity, elevated expression of senescence-related genes and reduced LMNB1 levels. Additionally, the senescence-inducing capacity of spermine in HUVECs and WRL-68 cells is confirmed, and exogenous spermine treatment increased the accumulation and release of H 2 O 2 . Overall, a novel SlipChip-SERS system is developed for single-cell metabolic analysis, revealing spermine as a potential inducer of senescence across multiple cell types, which may offer new strategies for addressing ageing and ageing-related diseases.
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Small
·
2025
·
IF 12.1
Rui Sun,Shen Zhang,Zheming Tong,Yixue Wang,Feng Gao,Jiankun Hu,Yang Hou,Jianguo Lu,Weiwei Cong,Yiming Sun,Xiaoli Zhan,Qinghua Zhang
Lubricant-mediated surfaces limit their practical application in transparent antifouling due to the inherent drawbacks of lubricant loss and poor transparency. Liquid-Like Surfaces(LLSs)are expected to solve these problems. Herein, inspired by the skin structure of globefish, some slippery LLSs are prepared with the cyclodextrin–eugenol inclusion complexes as the poison glands and flexible silicone chains as the liquid-like layer. LLSs kill attached organisms by slowly secreting environmentally friendly eugenol through poison glands. Short-term explosive release of the drug is avoided owing to host-guest interactions. In addition, due to low surface energy, the covalently linked flexible silicone chains spontaneously migrate to the surface of the coating, effectively preventing the adhesion of fouling and improving the durability of slippery surfaces, achieving both offense and defense. LLSs exhibit outstanding antifouling, mechanical, and adhesive performance. Interestingly, the transparency of LLSs in seawater and freshwater is quite different. This different behavior is attributed to ion-dipole interactions weakening the hydrogen bonding of water molecules to the polymer network, which provides some insights into tuning the transparency responsiveness of polymers. Furthermore, LLSs-coated lenses achieve a long-lasting transparent application in seawater for 90 days, providing a promising approach for surface antifouling of lenses in marine environments.
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MACROMOLECULAR RAPID COMMUNICATIONS
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2024
·
IF 4.2
Na Feng,Shuting Miao,Xin Guo,Ziyi Yang,Luke Yan,Peng Yang,Jia Kong
Biomimetic slippery liquid-infused porous surfaces (SLIPS) have emerged as a promising solution to solve the limitations of superhydrophobic surfaces, such as inadequate durability in corrosion protection and a propensity for frosting. However, the challenge of ensuring strong, lasting adhesion on diverse materials to enhance the durability of the lubricant layer remains. The research addresses this by leveraging amyloid phase-transitioned lysozyme (PTL) as an adhesive interlayer, conferring stable attachment of SLIPS across a variety of substrates, including metals, inorganics, and polymers. The silica-textured interface robustly secures the lubricant with a notably low sliding angle of 1.15°. PTL-mediated adhesion fortifies the silicone oil attachment to the substrate, ensuring the retention of its repellent efficacy amidst mechanical stressors like ultrasonication, water scrubbing, and centrifugation. The integration of robust adhesion, cross-substrate compatibility, and durability under stress affords the PTL-modified SLIPS exceptional anti-fouling, anti-icing, and anti-corrosion properties, marking it as a leading solution for advanced protective applications.
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Science Advances
·
2025
·Vol. 11
·期 10
·
IF 12.5
Lu Wang,Yishun Guo,Ben Chen,Si Lu,Jianhua Yang,Yingying Jin,Xinyi Wang,Xinyue Sun,Shuting Wang,Bailiang Wang
Microneedles directly penetrating into the cornea inevitably cause pain, corneal structure damage, and reduced light transmittance. In this work, a minimally invasive annular microneedle (A-MN) patch was developed avoiding direct puncture into the central cornea for ophthalmic drug delivery. The feasible mechanical strength of A-MNs was achieved by adjusting the ratio of PVP-β-CD and PVA to puncture the cornea barrier. Through effective diffusion to corneal stroma, bioavailability of hydrophilic small-molecule drugs, hydrophobic drugs, and macromolecular protein drugs through an A-MN patch was 24.36, 17.47, and 5.36 times higher than that of free drug administration. A-MNs effectively maintained light transmittance of the cornea with a light transmittance of 96.33 to 100%, which was higher than that of S-MNs. Furthermore, A-MNs effectively avoided corneal tissue and nerve damage along with the pain. The efficiency and safety of A-MNs were also examined through both an in vitro cell experiment and an in vivo animal experimental model, which showed great potential in clinical application.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
·
IF 5.4
Qiang Zhang,Zhongtian Yang,Yage Xia,Junxu Chen,Yanzheng Ji,Juan Li,Huimin Liu,Xinquan Yu,Youfa Zhang
Slippery liquid-infused porous surfaces (SLIPS) have excellent hydrophobicity, low adhesion, and self-healing, showing potential applications prospects in the fields of self-cleaning, anti-corrosion, anti-biofouling, and drag reduction. However, the current SLIPS surface has problems such as complicated preparation process and easy loss of lubricant, which seriously restricts its practical application. In this paper, hydrophobic modified superhydrophobic diatomaceous earth@SiO 2 cell loaded with silicone oil were firstly prepared, and then mixed with polyurea resin and curing agent to prepare a novel slippery lubricated oil-infused anti-corrosion and anti-fouling polyurea coating (SLIC).The impedance modulus (|Z| 0.01 Hz ) of the SLIC-coated Q235B steel plate in simulated seawater (3.5 wt% NaCl aqueous solution) reaches 10 10 Ω·cm 2 order of magnitude; Additionally, the glass samples coated with SLIC coatings showed only 0.18 % bacteria coverage rate after 72 hours of incubation in E. coli culture solution, and only 0.10 %, 0.29 % and 0.53 % coverage of Chlorella after 5, 10 and 15 days of incubation in Chlorella culture solution. The SLIC coatings are also simple to prepare, low-cost, and versatile, with excellent robustness, durability and self-cleaning, thereby presenting potential application prospects in the fields of ships and marine engineering.
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Nano Energy
·
2024
·
IF 16.8
Bingkun Cheng,Chenyu Li,Teng Ji,Yuda Zhao,Kaige Gao,Jianhua Hao,Wei Xu
To develop skin-like tactile sensor systems with both self-healing ability of repairing mechanical damage and perception ability of identifying materials and objects is significantly valuable for smart and high-quality interaction with environment. It is noticed that the sensing array comprised of distinct triboelectric nanogenerator (TENG) units shows great advantages in material recognition. However, those attempts of integrating self-healing ability into above triboelectric sensing array are challenged by the lack of self-healing TENG constituent units with differentiated electron affinity . Herein, we exploit a self-healing polyamide (SPA) with high mechanical strength as the base material for constructing a novel self-healing TENG unit with distinctive electron affinity. The healing of the prepared SPA-based TENG (SPA-TENG) can be autonomously conducted at room temperature without external intervention required. Our results reveal that SPA-TENG possesses stronger electron affinity compared to existing self-healing TENGs, which enables it to be an ideal constituent unit to construct self-healing triboelectric sensing array for material identification. After combining SPA-TENG with other previously reported self-healing TENGs, we firstly demonstrate a fully self-healing triboelectric sensing array capable of distinguishing various commercial plastic products based on their fingerprint waveform combinations, which shows promising application in fields of intelligent robots, artificial prosthesis , and automatic production etc.
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LANGMUIR
·
2024
·
IF 3.7
Weidong Fang,Zhi Tao,Haiwang Li,Yuqian Ma,Shuai Yin,Tiantong Xu,Teckneng Wong,Yi Huang
Emulsions have been applied in a number of industries such as pharmaceutics, cosmetics, and food, which are also of great scientific interest. Although aqueous emulsions are commonly used in our daily life, oil-in-oil (o/o) emulsions also play an irreplaceable role in view of their unique physics and complementary applications. In this paper, we investigate typical behaviors of organic droplets surrounded by organic medium (o/o emulsions) with different functional groups controlled by the AC electric field. Droplet behaviors can be catalogued into five types: namely, “no effect”, “movement”, “deformation”, “interface rupture”, and “disorder”. We identify the key dimensionless number Wee·Ca, combined with the channel geometry, for characterizing the typical behaviors in silicon oil/1,6-hexanediol diacrylate and mineral oil/1,6-hexanediol diacrylate emulsions. Unlike aqueous emulsion, the Maxwell–Wagner relaxation inhibits the electric effect and leads to an effective frequency, ranging from 0.5 to 3 kHz. The increasing viscosity of the droplet facilitates the escalation by promoting the shearing effect under the same flow conditions. Ethylene glycol droplets primarily show the efficient coalescence even at a low Wee·Ca, which is attributed to the attraction of free charges induced by the increasing conductivity. In 1,6-hexanediol diacrylate/silicon oil emulsion, the droplet tends to form a liquid film that expands into the entire channel due to the affinity of the droplet to the channel wall. A variety of elongated columns are observed to oscillate between the electrodes at high voltages. These findings can contribute to understanding the electrohydrodynamic physics in o/o emulsion and controlling droplet behaviors in a fast response, programmable, and high-throughput way. We expect that this droplet manipulation technology can be widely adopted in a broad range of chemical synthesis and biological and material science.
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LANGMUIR
·
2025
·
IF 3.9
Ming Liu,Runan Chen,Jin Yuan,Cheng Chen,Zhilong Peng,Shaohua Chen
Droplet manipulations have important applications in many fields, especially droplet splitting and transport in aseptic operations or biochemical reagent analysis. However, droplet splitting or transport on existing functional surfaces is limited to predesigned microstructures or fixed patterns. It remains a challenge to realize reprogrammable surface microstructures for freely controllable droplet splitting and transport. In this study, a flexible technique for both the multimodal splitting and reciprocating transport of droplets on one surface is proposed. Such a surface is prepared with a facile fabrication method by premixing magnetic particles and softener into the polymer solvent matrix and immersing the solidified matrix in a lubricant. The movable wettability gradient is generated on the surface by an external magnetic field, which can act as an invisible “air knife” to split the droplet in multiple modes. The mechanism and critical conditions of droplet splitting are analyzed and revealed theoretically. Furthermore, the microstructural configurations and surface wettability can be reprogrammed by modulating the magnetic field strength and gradient. Accordingly, the splitting behavior of the droplet is transformed into the reciprocating transport behavior. The influencing factors of such behavior have also been analyzed. The reported reprogrammable manipulation of the droplet on one surface provides a versatile prototype for the actuation of droplets in microfluidic and biological analysis devices.
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