Materials Science & Engineering C-Materials for Biological Applications
·
2020
·
IF 5.88
Jiamin Zhang,Xuzhao He,Xiaoyi Chen,Yongjun Wu,Lingqing Dong,Kui Cheng,Jun Lin,Huiming Wang,Wenjian Weng
High performance of biomaterial surfaces provides a sound basis to mediate cellular growth behavior. In this work, we attempted to incorporate both positive and negative magnetostriction particles of CoFe 2 O 4 (CFO) and Tb x Dy 1−x Fe 2 alloy (TD) into piezoelectric poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)) for forming high magnetoelectric effect films, on which osteogenic differentiation could be dynamically mediated by a magnetic-field-induced surface potential (φ ME ).The negatively poled film with TD/CFO volume ratio of 1:4 (1T4C) showed a highest magnetoelectric effect with φ ME of −171 mV at 2800 Oe. Compared with CFO/P(VDF-TrFE) and TD/P(VDF-TrFE) films, the φ ME increased about 213% and 173%, respectively. This could result from that P(VDF-TrFE) dipole domains receive a larger off-axial stress caused by the distribution characteristic of CFO and TD in P(VDF-TrFE), consequently to facilitate P(VDF-TrFE) dipole domain rearrangement. When MSCs were cultured on 1T4C film for 7 or 14 days, the magnetic actuation was setup to begin at the 4th or 8th day after the culture. The 7-day osteogenic differentiation was hardly affected for magnetic actuation at 4th day, moreover, the 14-day differentiation was significantly enhanced for magnetic actuation at 8th day. The enhancement appears just at a relatively late period of the cell growth, probably because the cells need a steady change in cell membrane potential to disassociate pairs of β-catenin and E-cadherin and activate osteogenic-related signaling pathway. This work could provide an alternative way to promote performance for magnetoelectric materials, and get insight into understanding of interactions of surface potential with cells.
研究领域:
生物材料学
·
细胞生物学
✓ 已验证
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY
·
2022
·
IF 5.436
Ying Yu,Li Wan,Wenqian Cheng,Shunli Shi,Mingwei Yuan,Yanping Luo,Liren Mei,Tong Xu,Shuhua Wang,Dan Zhao,Weiming Xiao,Fanrong Ai,Qianrong Fang,Chao Chen
Herein, we introduce a strategy to develop a kind of unprecedented microcatalyst, which owns self-stirring and catalytic performance based on pneumatic printing and magnetic field induction technology. A spindle-shaped microcatalyst based on metal–organic frameworks (MOFs) with a certain aspect ratio and size can be obtained by tuning the printing parameters and the intensity of the magnetic field. One nozzle can print 18 000 microcatalysts per hour, which provides a prerequisite for the realization of large-scale production in the industrial field. Furthermore, this strategy can be widely applied to a variety of other heterogeneous catalysts, such as mesoporous SiO2, zeolite, metallic oxide, and so on. To demonstrate the superiority of the printed catalyst, the series of printed microcatalysts were evaluated by various catalytic reactions including liquid-phase hydrogenation, microdroplet dye-fading, and photocatalytic degradation in microreactor, all of which exhibited excellent catalytic performance.
研究领域:
化学工程
·
材料科学
·
催化技术
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry C
·
2025
·
IF 5.1
Jianying Deng,Yuanyuan Zhou,Jiushuai Deng,Biao Zhao
Nickel-based metal composites are highly promising candidates in the field of electromagnetic interference (EMI) shielding. However, the preparation of nickel-based EMI shielding materials that combine low reflection and high absorption characteristics still faces significant challenges. This study reports a rapid one-step method for preparing magnetic nickel-cobalt (NiCo) array foam with an oriented arrangement strategy, which involves the magnetic field-induced chemical deposition of nickel-cobalt nanoparticles to form a directional structure. Thanks to this oriented structure, the prepared NiCo array foam exhibits ultra-high electromagnetic shielding effectiveness (>70 dB) over an ultra-wideband (18-26.5 GHz) range. Additionally, this magnetic field-induced orientation strategy is equally applicable to other unitary or binary systems, which also demonstrate excellent electromagnetic shielding performance. This research provides new ideas and methods for the structural design of nickel-based metal materials in the field of EMI shielding.
研究领域:
材料科学
·
电磁干扰屏蔽
·
纳米技术
·
金属复合材料
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2023
·
IF 9.5
Yonghong Wang,Kaixin Wang,Xinru Zhang,Jinping Li
Carbon molecular sieve (CMS) membranes are widely used for the separation of similar molecular kinetic diameter gas. However, their performance is limited by a large amount of discontinuous porous structures and a few adsorption affinity sites. Herein, we first prepared magnetic Co@NC@ZIF-8 nanoparticles , followed by introducing it into the polyimides matrix to design precursor membrane with vertical nanochain-like particle distribution by magnetic field induction. Afterwards, hybrid carbon molecular sieve (HCMS) membranes were prepared by pyrolyzing precursor with high-temperature under N 2 atmosphere, which had ordered microporous architecture and Co-N-C structure. Resultant HCMS membranes prepared by magnetic field induction had excellent gas separation performance, whose CO 2 , N 2 and CH 4 permeabilities were 27,050, 2614 and 622 Barrer, with CO 2 /N 2 , CO 2 /CH 4 and N 2 /CH 4 selectivities of 10.4, 43.5 and 4.2 respectively. These values far exceeded 2019 CO 2 /CH 4 and 2008 N 2 /CH 4 upper bounds as well as approached 2008 CO 2 /N 2 upper bound. The superior performance resulted from the vertically ordered nanochain-like channels for gas transport, which dramatically shortens the transport path of gas molecules to intensify shape sieving potential. Moreover, the Co-N-C structure on the wall of channels could facilitate CO 2 transport due to the π complexation. Additionally, a large quantity of nitrogen sites in the carbonized Co@NC@ZIF-8 enhance CO 2 adsorption selectivity owing to the acid-base interaction. More remarkably, after 30-day aging testing, it was found that HCMS membranes prepared by magnetic field induction had exceptional aging resistance compared to the pristine CMS membranes and one without magnetic field induction under the same aging environments.
研究领域:
材料科学
·
化学工程
·
膜技术
·
气体分离
✓ 已验证
产品关联
DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2015
·
IF 1.998
Zhaozhong Qiu,Jia Sun,Rui Wang,Yushen Zhang,Xiaohong Wu
In this work, magnetic Fe 3 O 4 nanoparticles treated with hexadecyltrimethoxysilane were used as immobilization material. Under the anchor of dopamine, the magnetic nanoparticles can be easily deposited on the solid substrate. Array structure was formed by the coated Fe 3 O 4 on the magnesium alloy with the magnet-induced assembly technique. The hierarchical rough surfaces on the substrates form a superhydrophobic coating with a water contact angle as high as 157°. Of note is that the coating significantly decreased the corrosion rate compared with the pristine magnesium alloy in 3.5 wt.% NaCl solution.
研究领域:
材料科学
·
表面工程
·
腐蚀科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2022
·
IF 10.53
Yonghong Wang,Lecheng Sheng,Xinru Zhang,Jinping Li,Rong Wang
Carbon molecular sieve (CMS) membranes have great promise in CO 2 capture. However, tortuous transport passageways restrict the enhancement in the permeability due to the presence of disordered porous structure and dead-end pore. Herein, the growth of ZIF-8 layer on the surface of Fe 3 O 4 formed magnetic core-shell Fe 3 O 4 @ZIF-8 particles, which were fixed into 6FDA/ODA:DABA polyimides under magnetic field-induction to fabricate a precursor membrane with vertically oriented chain-like particles. It was then pyrolyzed to form hybrid carbon molecular sieve (HCMS) membranes with ordered microporous structure under high temperature conditions. The cross-section scanning electron microscopy images and N 2 adsorption for resultant HCMS membranes indicate that Fe 3 O 4 @ZIF-8-derived carbons frameworks were vertically oriented to form the ordered microporous structure, which also had good compatibility with carbon matrix stemmed from 6FDA/ODA:DABA polyimides. The as-prepared HCMS membranes embedded with 5 wt% Fe 3 O 4 @ZIF-8 manifested a highest gas separation performance (permeability of 5130 Barrer; CO 2 /N 2 selectivity of 29; CO 2 /CH 4 selectivity of 48), outperforming the pristine CMS membranes, which were near and beyond 2019 CO 2 /N 2 and CO 2 /CH 4 upper bounds, separately. These good separation performances resulted from vertical chain-like microporous particles, which provided fast transport channels to accelerate CO 2 diffusion rate. In addition, we supposed that Fe 3 O 4 prevent ZIF-8 frameworks from destruction during the pyrolysis and promote the size screening capability. More importantly, this membrane exhibited excellent aging resistance over 30 days aging testing compared to pristine CMS membranes. Therefore, it affords a feasible way for carbon capture from flue gas and natural gas.
研究领域:
材料科学
·
化学工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Xin Jing,Yeqing Xu,Jiazhou Zeng,Peiyong Feng,Shitao Li,Hao-Yang Mi
The development of soft robotics that integrates autonomous motion and real-time sensing remains challenging due to the irreconcilability of these functions in homogeneous materials. Inspired by natural symbiotic systems, a conductive nanocomposite hydrogel is developed that achieved a synergistic combination of magnetic actuation and built-in strain-sensing capabilities through a facile magnetic-field-induced assembly strategy that creates a gradient distribution of Fe 3 O 4 @MXene nanohybrids within the hydrogel network. The resulting hydrogel exhibits a comprehensive set of properties underpinning this synergy: good conductivity (2.6 mS cm −1 ), high strain sensitivity (gauge factor of 6), a broad strain response range (0–580%), and excellent fatigue resistance (500 cycles), along with a fast magnetic actuation speed of 30° s −1 . The core advance is that actuation and sensing work in concert within a single material, allowing it to execute programmed deformation while simultaneously monitoring its own motion in real-time, which is vividly showcased through biomimetic applications, such as a gripper that adjusts its grip upon sensing and a crawler that can track its own movement. This work provides a paradigm for creating intelligent soft matter with innate feedback loops, opening transformative avenues in adaptive soft robotics, biomedicine, and human-machine interaction.
研究领域:
软体机器人
·
智能材料
·
纳米复合材料
·
传感器与执行器
·
生物医学工程
✓ 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）