Elise Bou, Claudia De La Fuente, Etienne Orsini, Sarah Delshadi, Orphée CUGAT, Franz Bruckert
Micro-magnet arrays coupled with external rotating magnetic fields have been reported for the manipulation of individual superparamagnetic particles in stationary microfluidics, requiring no fluidic actuation. In addition to their magnetic properties preventing particle aggregation, superparamagnetic particle size reduction advantageously increases their interaction with surrounding liquid environment. However, precise magnetophoresis of submicrometric particles is challenging, owing to their low magnetic content. We present a micro-magnetofluidic chip for fast and collective transport of superparamagnetic nanoparticles (SNPs) over centimetric distances. In our innovative approach, SNPs are captured on a line pattern on top of a micro-magnet array covered with a spacer, which allows for SNP precise positioning along the surface using a rotating external magnetic field. The impact of SNP size on magnetophoresis was explored by characterizing the velocility ranges of 100 nm and 200 nm SNPs. For 100 nm size, a critical speed of 500 µm/s was reached beyond which the particles get resuspended, whereas for the 200 nm size, our system maximum rotation speed conveys the particles at up to 1.4 mm/s without reaching a critical speed. The mobility of SNPs was investigated in different buffers commonly used for biological analysis, and shown to be enhanced in low ionic strength conditions. As an example of future application, we demonstrate nucleic acid detection by SNP accumulation enabling to concentrate the fluorescence signal. This system provides the opportunity to be easily integrated in lab-on-a-chip (LOC) devices and could help relieve current development limitations related to complex and costly fluidic actuation instrumentation.
{"title":"Fast and precise magnetophoresis of superparamagnetic nanoparticles on a micro-magnetic substrate in a static liquid environment","authors":"Elise Bou, Claudia De La Fuente, Etienne Orsini, Sarah Delshadi, Orphée CUGAT, Franz Bruckert","doi":"10.1039/d5lc01072a","DOIUrl":"https://doi.org/10.1039/d5lc01072a","url":null,"abstract":"Micro-magnet arrays coupled with external rotating magnetic fields have been reported for the manipulation of individual superparamagnetic particles in stationary microfluidics, requiring no fluidic actuation. In addition to their magnetic properties preventing particle aggregation, superparamagnetic particle size reduction advantageously increases their interaction with surrounding liquid environment. However, precise magnetophoresis of submicrometric particles is challenging, owing to their low magnetic content. We present a micro-magnetofluidic chip for fast and collective transport of superparamagnetic nanoparticles (SNPs) over centimetric distances. In our innovative approach, SNPs are captured on a line pattern on top of a micro-magnet array covered with a spacer, which allows for SNP precise positioning along the surface using a rotating external magnetic field. The impact of SNP size on magnetophoresis was explored by characterizing the velocility ranges of 100 nm and 200 nm SNPs. For 100 nm size, a critical speed of 500 µm/s was reached beyond which the particles get resuspended, whereas for the 200 nm size, our system maximum rotation speed conveys the particles at up to 1.4 mm/s without reaching a critical speed. The mobility of SNPs was investigated in different buffers commonly used for biological analysis, and shown to be enhanced in low ionic strength conditions. As an example of future application, we demonstrate nucleic acid detection by SNP accumulation enabling to concentrate the fluorescence signal. This system provides the opportunity to be easily integrated in lab-on-a-chip (LOC) devices and could help relieve current development limitations related to complex and costly fluidic actuation instrumentation.","PeriodicalId":85,"journal":{"name":"Lab on a Chip","volume":"88 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2026-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146146196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-10DOI: 10.1016/j.ces.2026.123562
Yin Zhu, Liming Che, Haiqiang Lin, Bin Wei, Hua Zhou
A semi-resolved Lattice Boltzmann Method − Discrete Element Method (LBM-DEM) coupling approach is proposed to overcome the unphysical velocity oscillations in the transitional regime, where the particle-to-grid size ratio approaches unity. Kernel function approximation is employed to smooth the particle-to-grid mapping, while various drag force models are adopted to describe the particle–fluid interactions. Correspondingly, the governing equations of the modified Immersed Moving Boundary-LBM (IMB-LBM) are adapted to accurately describe the fluid–solid coupling effects. The proposed method was systematically validated through a series of benchmark simulations, including sedimentation of a nylon ball and a steel ball, a fluidized bed, and a spouted bed. Results demonstrate that the proposed semi-resolved framework effectively bridges resolved and unresolved LBM-DEM regimes. Parameter analysis identifies the Energy Minimization Multi-Scale (EMMS) model as the most suitable drag correlation for fluidized beds. Furthermore, background expansion factors of 3–4 optimally balance computational accuracy and efficiency. This work extends the applicability of the LBM-DEM method, providing a robust and unified framework for modeling particle–fluid systems.
{"title":"A Semi-Resolved LBM-DEM coupling Approach: Methodology, Modeling, and validation","authors":"Yin Zhu, Liming Che, Haiqiang Lin, Bin Wei, Hua Zhou","doi":"10.1016/j.ces.2026.123562","DOIUrl":"https://doi.org/10.1016/j.ces.2026.123562","url":null,"abstract":"A semi-resolved Lattice Boltzmann Method − Discrete Element Method (LBM-DEM) coupling approach is proposed to overcome the unphysical velocity oscillations in the transitional regime, where the particle-to-grid size ratio approaches unity. Kernel function approximation is employed to smooth the particle-to-grid mapping, while various drag force models are adopted to describe the particle–fluid interactions. Correspondingly, the governing equations of the modified Immersed Moving Boundary-LBM (IMB-LBM) are adapted to accurately describe the fluid–solid coupling effects. The proposed method was systematically validated through a series of benchmark simulations, including sedimentation of a nylon ball and a steel ball, a fluidized bed, and a spouted bed. Results demonstrate that the proposed semi-resolved framework effectively bridges resolved and unresolved LBM-DEM regimes. Parameter analysis identifies the Energy Minimization Multi-Scale (EMMS) model as the most suitable drag correlation for fluidized beds. Furthermore, background expansion factors of 3–4 optimally balance computational accuracy and efficiency. This work extends the applicability of the LBM-DEM method, providing a robust and unified framework for modeling particle–fluid systems.","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"5 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146146181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-10DOI: 10.1016/j.cej.2026.173993
Shuxuan Li, Xi Chen, Bo Liu, Xin Zhen, Aidi Zhang, Bei Li, Xin Zhang
Polymer dielectric capacitors, as high-power-density energy storage devices, play a crucial role in advanced electronic and power systems. However, enhancing their energy storage performance at elevated temperatures remains a significant challenge due to the inherent trade-off among bandgap (Eg), glass transition temperature (Tg), and dielectric constant (εr). Herein, we present a polyimide copolymer designed to achieve a synergistic optimization of Eg, Tg, and εr. This rationally engineered copolymer, incorporating electron-withdrawing groups and sterically hindered bicyclic structures, attains a high Eg by suppressing both intramolecular and intermolecular charge transfer. Additionally, the incorporation of spirocyclic rigid frameworks enhances mechanical strength and thermal stability of the copolymer. Moreover, the presence of high-dipole-moment ketone groups imparts substantial polarization capability to the copolymer films, contributing to improved dielectric performance. As a result of the simultaneous elevation in Eg, Tg, and εr, the copolymer film exhibits a remarkable Ue of 9.7 J cm−3 at η > 90% and 150 °C, outperforming previously reported high-temperature polymer dielectrics. Meanwhile, wound film capacitor fabricated from these copolymer films exhibits excellent capacitance performance and high-temperature stability, highlighting their potential for practical applications in extreme operating conditions within power systems.
{"title":"Synergetic enhancement of bandgap, polarization, and glass transition in polyimide copolymers for high-temperature energy storage","authors":"Shuxuan Li, Xi Chen, Bo Liu, Xin Zhen, Aidi Zhang, Bei Li, Xin Zhang","doi":"10.1016/j.cej.2026.173993","DOIUrl":"https://doi.org/10.1016/j.cej.2026.173993","url":null,"abstract":"Polymer dielectric capacitors, as high-power-density energy storage devices, play a crucial role in advanced electronic and power systems. However, enhancing their energy storage performance at elevated temperatures remains a significant challenge due to the inherent trade-off among bandgap (<em>E</em><sub>g</sub>), glass transition temperature (<em>T</em><sub>g</sub>), and dielectric constant (<em>ε</em><sub>r</sub>). Herein, we present a polyimide copolymer designed to achieve a synergistic optimization of <em>E</em><sub>g</sub>, <em>T</em><sub>g</sub>, and <em>ε</em><sub>r</sub>. This rationally engineered copolymer, incorporating electron-withdrawing groups and sterically hindered bicyclic structures, attains a high <em>E</em><sub>g</sub> by suppressing both intramolecular and intermolecular charge transfer. Additionally, the incorporation of spirocyclic rigid frameworks enhances mechanical strength and thermal stability of the copolymer. Moreover, the presence of high-dipole-moment ketone groups imparts substantial polarization capability to the copolymer films, contributing to improved dielectric performance. As a result of the simultaneous elevation in <em>E</em><sub>g</sub>, <em>T</em><sub>g</sub>, and <em>ε</em><sub>r</sub>, the copolymer film exhibits a remarkable <em>U</em><sub>e</sub> of 9.7 J cm<sup>−3</sup> at <em>η</em> > 90% and 150 °C, outperforming previously reported high-temperature polymer dielectrics. Meanwhile, wound film capacitor fabricated from these copolymer films exhibits excellent capacitance performance and high-temperature stability, highlighting their potential for practical applications in extreme operating conditions within power systems.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"10 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2026-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146146183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Aqueous Zn-ion batteries (AZIBs) are considered as promising candidates for grid-level energy storage, yet their practical application remains hindered by rampant dendrite proliferation, persistent hydrogen evolution, and corrosive degradation of Zn anodes. A functionalized metal-organic polyhedra (MOP) interphase is introduced to tackle these coupled instabilities. The MOP possesses rigorously defined pore apertures that regulate Zn2+ flux with precision and facilitate the Zn2+ desolvation process in the interphase, thereby promoting uniform nucleation. Besides, the hydrophilic -InCl3 groups chelated within the MOP pores coordinate free water molecules, a process that markedly suppresses hydrogen evolution and attenuates corrosion. An even more consequential effect stems from the MOP-induced formation of an InZn alloy layer on the Zn surface, which exhibits strong affinity for Zn nucleation and supports rapid interfacial reaction kinetics. As a result, the Zn anodes display enhanced reversibility and improved cycling stability. Symmetric cells sustain highly stable plating/stripping for more than 2000 h with a substantially reduced overpotential, and full cells achieve an 87.2% capacity retention after 1200 cycles while operating reliably at a high rate of 4 A g−1. Overall, the MOP interphase offers a concise yet powerful materials strategy that stabilizes Zn anodes and advances the performance of AZIBs.
含水锌离子电池（azib）被认为是电网级储能的有前途的候选者，但其实际应用仍然受到猖獗的枝晶扩散、持续的析氢和锌阳极腐蚀降解的阻碍。引入功能化金属-有机多面体（MOP）间相来解决这些耦合不稳定性。MOP具有严格定义的孔径，可以精确调节Zn2+通量，促进Zn2+在界面中的脱溶过程，从而促进均匀成核。此外，在MOP孔内螯合的亲水性-InCl3基团协调了自由水分子，这一过程显著抑制了析氢，减轻了腐蚀。更重要的影响来自于mopo诱导Zn表面形成的InZn合金层，它对Zn成核具有很强的亲和力，并支持快速的界面反应动力学。结果，锌阳极表现出增强的可逆性和改善的循环稳定性。对称电池维持高度稳定的电镀/剥离超过2000 h，大大降低了过电位，并在1200 循环后实现87.2%的容量保留，同时在4 a g−1的高速率下可靠地运行。总的来说，MOP界面提供了一种简洁而强大的材料策略，可以稳定Zn阳极并提高azib的性能。
{"title":"Regulating reversible Zn anodes through a functionalized metal-organic polyhedra interphase for high-performance Zn-ion batteries","authors":"Yingxin Wu, Donghui Cai, Yanting Zhou, Xiaoyan Lin, Siyuan Shao, Dongze Li, Ziqi Wang","doi":"10.1016/j.cej.2026.173986","DOIUrl":"https://doi.org/10.1016/j.cej.2026.173986","url":null,"abstract":"Aqueous Zn-ion batteries (AZIBs) are considered as promising candidates for grid-level energy storage, yet their practical application remains hindered by rampant dendrite proliferation, persistent hydrogen evolution, and corrosive degradation of Zn anodes. A functionalized metal-organic polyhedra (MOP) interphase is introduced to tackle these coupled instabilities. The MOP possesses rigorously defined pore apertures that regulate Zn<ce:sup loc=\"post\">2+</ce:sup> flux with precision and facilitate the Zn<ce:sup loc=\"post\">2+</ce:sup> desolvation process in the interphase, thereby promoting uniform nucleation. Besides, the hydrophilic -InCl<ce:inf loc=\"post\">3</ce:inf> groups chelated within the MOP pores coordinate free water molecules, a process that markedly suppresses hydrogen evolution and attenuates corrosion. An even more consequential effect stems from the MOP-induced formation of an In<ce:glyph name=\"sbnd\"></ce:glyph>Zn alloy layer on the Zn surface, which exhibits strong affinity for Zn nucleation and supports rapid interfacial reaction kinetics. As a result, the Zn anodes display enhanced reversibility and improved cycling stability. Symmetric cells sustain highly stable plating/stripping for more than 2000 h with a substantially reduced overpotential, and full cells achieve an 87.2% capacity retention after 1200 cycles while operating reliably at a high rate of 4 A g<ce:sup loc=\"post\">−1</ce:sup>. Overall, the MOP interphase offers a concise yet powerful materials strategy that stabilizes Zn anodes and advances the performance of AZIBs.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"45 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2026-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146146860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-10DOI: 10.1016/j.seppur.2026.137216
Na Yeong Oh, Chae Young Go, Young Jae Son, Hyoshin Kwak, Byulhana Min, Ki Chul Kim, Jong Hak Kim
Developing practical thin-film composite (TFC) membranes requires high separation performance, mechanical robustness, reproducible fabrication, and long-term operational stability. In this study, we report an all-polymeric TFC membrane that offers a practical and effective strategy for addressing these challenges through a miscible polymer-blend design. Pebax was incorporated into an amorphous, rubbery PGM copolymer synthesized from three monomers, poly(ethylene glycol) methyl ether methacrylate, glycidyl methacrylate, and amine-functional polypropylene glycol as a structural reinforcement and selectivity-enhancing component. Excellent miscibility between PGM and Pebax, together with the preserved intrinsic semi-crystalline microphase separation within Pebax, collectively enabled concurrent enhancements in mechanical robustness and separation performance. The PGM/Pebax-50 membrane (50:50 wt%) with optimized crystallinity achieved a high CO2 permeance of 1390 GPU with a CO2/N2 selectivity of 43, while exhibiting a robust tensile modulus of 77.1 MPa. Notably, one-year long-term stability tests demonstrated that the PGM/Pebax-50 membrane exhibited significantly improved stability, owing to the protective barrier effect of the PGM/Pebax layer in mitigating the physical aging of the poly(trimethylsilylpropyne) (PTMSP) gutter layer. Molecular dynamics (MD) simulations and density functional theory (DFT) calculations elucidated the gas-polymer interaction energetics and diffusion transport pathways within the blend membranes, and further revealed the mechanistic origins of the mitigated physical aging of PTMSP. Collectively, these findings demonstrate a potentially scalable approach for designing durable, high-performance, all-polymeric TFC membranes suitable for industrial CO2 capture applications.
{"title":"Semi-crystalline polymer-blend TFC membranes with enhanced mechanical robustness and mitigated PTMSP aging","authors":"Na Yeong Oh, Chae Young Go, Young Jae Son, Hyoshin Kwak, Byulhana Min, Ki Chul Kim, Jong Hak Kim","doi":"10.1016/j.seppur.2026.137216","DOIUrl":"https://doi.org/10.1016/j.seppur.2026.137216","url":null,"abstract":"Developing practical thin-film composite (TFC) membranes requires high separation performance, mechanical robustness, reproducible fabrication, and long-term operational stability. In this study, we report an all-polymeric TFC membrane that offers a practical and effective strategy for addressing these challenges through a miscible polymer-blend design. Pebax was incorporated into an amorphous, rubbery PGM copolymer synthesized from three monomers, poly(ethylene glycol) methyl ether methacrylate, glycidyl methacrylate, and amine-functional polypropylene glycol as a structural reinforcement and selectivity-enhancing component. Excellent miscibility between PGM and Pebax, together with the preserved intrinsic semi-crystalline microphase separation within Pebax, collectively enabled concurrent enhancements in mechanical robustness and separation performance. The PGM/Pebax-50 membrane (50:50 wt%) with optimized crystallinity achieved a high CO<sub>2</sub> permeance of 1390 GPU with a CO<sub>2</sub>/N<sub>2</sub> selectivity of 43, while exhibiting a robust tensile modulus of 77.1 MPa. Notably, one-year long-term stability tests demonstrated that the PGM/Pebax-50 membrane exhibited significantly improved stability, owing to the protective barrier effect of the PGM/Pebax layer in mitigating the physical aging of the poly(trimethylsilylpropyne) (PTMSP) gutter layer. Molecular dynamics (MD) simulations and density functional theory (DFT) calculations elucidated the gas-polymer interaction energetics and diffusion transport pathways within the blend membranes, and further revealed the mechanistic origins of the mitigated physical aging of PTMSP. Collectively, these findings demonstrate a potentially scalable approach for designing durable, high-performance, all-polymeric TFC membranes suitable for industrial CO<sub>2</sub> capture applications.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"1 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2026-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146146155","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-10DOI: 10.1016/j.jobe.2026.115556
Zhu Zhang, Eryu Zhu, Bin Wang, Chunqi Zhu, Jiacheng Li, Wenchao Cai
As a typical multiphase composite material, the initial pore defects in concrete cannot be ignored. To evaluate the impact of initial defects on concrete structures, this study investigates it through experimental and numerical methods. Expanded polystyrene (EPS) beads are firstly used to quantitatively fabricate initial pore defects within the concrete, and their environmental benefits during the construction process are evaluated. Then, based on the stress concentration effect induced by initial pore defects, a prediction model for the mechanical properties of concrete is established. In addition, a voxel-updating method based on int mark is employed to delineate the geometric characteristics of the four-phase material of concrete. Finally, a numerical method is proposed to reveal the damage evolution process in the meso-structure of concrete containing initial pore defects. The results indicate that as porosity increases, the reduction in the effective strength of concrete specimens is greater than the reduction in elastic modulus. And the degree of damage in the specimens decreases with increasing porosity. Moreover, the results from the prediction models and numerical simulations are consistent with experimental results. Environmentally, carbon reduction benefits can be achieved by using recycled EPS beads to prepare concrete structures, which enhances the synergy between optimized structural design and environmental benefits.
{"title":"Influence of initial pore defects on mechanical properties and environmental benefits of concrete: Experimental and numerical study","authors":"Zhu Zhang, Eryu Zhu, Bin Wang, Chunqi Zhu, Jiacheng Li, Wenchao Cai","doi":"10.1016/j.jobe.2026.115556","DOIUrl":"https://doi.org/10.1016/j.jobe.2026.115556","url":null,"abstract":"As a typical multiphase composite material, the initial pore defects in concrete cannot be ignored. To evaluate the impact of initial defects on concrete structures, this study investigates it through experimental and numerical methods. Expanded polystyrene (EPS) beads are firstly used to quantitatively fabricate initial pore defects within the concrete, and their environmental benefits during the construction process are evaluated. Then, based on the stress concentration effect induced by initial pore defects, a prediction model for the mechanical properties of concrete is established. In addition, a voxel-updating method based on int mark is employed to delineate the geometric characteristics of the four-phase material of concrete. Finally, a numerical method is proposed to reveal the damage evolution process in the meso-structure of concrete containing initial pore defects. The results indicate that as porosity increases, the reduction in the effective strength of concrete specimens is greater than the reduction in elastic modulus. And the degree of damage in the specimens decreases with increasing porosity. Moreover, the results from the prediction models and numerical simulations are consistent with experimental results. Environmentally, carbon reduction benefits can be achieved by using recycled EPS beads to prepare concrete structures, which enhances the synergy between optimized structural design and environmental benefits.","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":"93 1","pages":""},"PeriodicalIF":6.4,"publicationDate":"2026-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146146680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-10DOI: 10.1016/j.isprsjprs.2026.02.009
Haoyu Zuo, Minghao Ning, Yiming Shu, Shucheng Huang, Chen Sun
Oriented object detection is critical for enhancing the visual perception of unmanned aerial vehicles (UAVs). However, existing detectors primarily designed for general aerial imagery often struggle to address the unique challenges of UAV imagery, including substantial scale variations, dense clustering, and arbitrary orientations. Furthermore, these models lack probabilistic guarantees required for safety-critical applications. To address these challenges, we propose EAV-DETR, an efficient oriented object detection transformer designed for UAV imagery. Specifically, we first propose a novel scale-adaptive center supervision (SACS) strategy that explicitly enhances the encoder’s feature representations by imposing pixel-level localization constraints with zero inference overhead. Second, we design an anisotropic decoupled rotational attention (ADRA) module, which achieves superior feature alignment for objects of arbitrary morphology by generating a non-rigid adaptive sampling field. Finally, we propose a pose-aware Mondrian conformal prediction (PA-MCP) method, which utilizes the UAV’s flight pose as a physical prior to generate prediction sets with conditional coverage guarantees, thereby providing reliable uncertainty quantification. Extensive experiments on multiple aerial imagery datasets validate the effectiveness of our model. Compared to previous state-of-the-art methods, EAV-DETR improves AP75 on CODrone by 1.76% while achieving a 52% faster inference speed (46.38 vs 30.55 FPS), and improves AP50:95 on UAV-ROD by 3.17%. Our code is available at https://github.com/zzzhak/EAV-DETR.
定向目标检测是提高无人机视觉感知能力的关键。然而，现有的探测器主要是为一般航空图像设计的，通常难以解决无人机图像的独特挑战，包括大量的尺度变化、密集的聚类和任意方向。此外，这些模型缺乏安全关键应用程序所需的概率保证。为了解决这些挑战，我们提出了EAV-DETR，一种针对无人机图像设计的高效定向目标检测转换器。具体来说，我们首先提出了一种新的尺度自适应中心监督（SACS）策略，该策略通过施加零推理开销的像素级定位约束来显式增强编码器的特征表示。其次，我们设计了一个各向异性解耦旋转注意（ADRA）模块，该模块通过生成非刚性自适应采样场来实现对任意形态目标的优越特征对齐。最后，我们提出了一种姿态感知的蒙德里安保形预测（PA-MCP）方法，该方法利用无人机的飞行姿态作为物理先验来生成具有条件覆盖保证的预测集，从而提供可靠的不确定性量化。在多个航空图像数据集上的大量实验验证了我们模型的有效性。与之前最先进的方法相比，EAV-DETR在CODrone上的AP75提高了1.76%，推理速度提高了52% (46.38 vs 30.55 FPS)，在UAV-ROD上的AP50:95提高了3.17%。我们的代码可在https://github.com/zzzhak/EAV-DETR上获得。
{"title":"EAV-DETR: Efficient Arbitrary-View oriented object detection with probabilistic guarantees for UAV imagery","authors":"Haoyu Zuo, Minghao Ning, Yiming Shu, Shucheng Huang, Chen Sun","doi":"10.1016/j.isprsjprs.2026.02.009","DOIUrl":"https://doi.org/10.1016/j.isprsjprs.2026.02.009","url":null,"abstract":"Oriented object detection is critical for enhancing the visual perception of unmanned aerial vehicles (UAVs). However, existing detectors primarily designed for general aerial imagery often struggle to address the unique challenges of UAV imagery, including substantial scale variations, dense clustering, and arbitrary orientations. Furthermore, these models lack probabilistic guarantees required for safety-critical applications. To address these challenges, we propose EAV-DETR, an efficient oriented object detection transformer designed for UAV imagery. Specifically, we first propose a novel scale-adaptive center supervision (SACS) strategy that explicitly enhances the encoder’s feature representations by imposing pixel-level localization constraints with zero inference overhead. Second, we design an anisotropic decoupled rotational attention (ADRA) module, which achieves superior feature alignment for objects of arbitrary morphology by generating a non-rigid adaptive sampling field. Finally, we propose a pose-aware Mondrian conformal prediction (PA-MCP) method, which utilizes the UAV’s flight pose as a physical prior to generate prediction sets with conditional coverage guarantees, thereby providing reliable uncertainty quantification. Extensive experiments on multiple aerial imagery datasets validate the effectiveness of our model. Compared to previous state-of-the-art methods, EAV-DETR improves <mml:math altimg=\"si152.svg\" display=\"inline\"><mml:msub><mml:mrow><mml:mtext>AP</mml:mtext></mml:mrow><mml:mrow><mml:mn>75</mml:mn></mml:mrow></mml:msub></mml:math> on CODrone by 1.76% while achieving a 52% faster inference speed (46.38 vs 30.55 FPS), and improves <mml:math altimg=\"si186.svg\" display=\"inline\"><mml:msub><mml:mrow><mml:mtext>AP</mml:mtext></mml:mrow><mml:mrow><mml:mn>50</mml:mn><mml:mo>:</mml:mo><mml:mn>95</mml:mn></mml:mrow></mml:msub></mml:math> on UAV-ROD by 3.17%. Our code is available at <ce:inter-ref xlink:href=\"https://github.com/zzzhak/EAV-DETR\" xlink:type=\"simple\">https://github.com/zzzhak/EAV-DETR</ce:inter-ref>.","PeriodicalId":50269,"journal":{"name":"ISPRS Journal of Photogrammetry and Remote Sensing","volume":"9 1","pages":""},"PeriodicalIF":12.7,"publicationDate":"2026-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146146708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The widespread use of benzophenone (BP)-type ultraviolet absorbers has raised growing concerns on the potential risks to both ecosystems and human health. In this study, a novel ionic liquid functionalized polymer (PS-CH2-[BrMim][Cl]) was prepared by chemical grafting and its performance to selectively remove benzophenone-5 (BP-5) from water was studied. It was shown that PS-CH2-[BrMim][Cl] not only exhibited an ultrahigh adsorption capacity of 834.7 mg/g for BP-5 at 3200 ppm, but also effectively enriched 85.9% of trace BP-5 (2.5 ppb) from high-salinity water, with an enrichment factor as high as 859.0. The adsorbent demonstrated rapid adsorption kinetics and 10 min was enough to achieve equilibrium. Even the content of coexisting inorganic ions such as Na+, K+, Ca2+, Mg2+, Cl− and NO3− in water was 50,000 times higher than that of BP-5, the removal efficiency remained almost unaffected. Notably, PS-CH2-[BrMim][Cl] also demonstrated good adsorption performance for benzophenone-type ultraviolet absorbers with similar structure to BP-5 and exhibited excellent recycling durability. Mechanism study indicated that the multiple interactions of hydrogen bonding, electrostatic attraction and ion exchange significantly contributed to the ultra-high adsorption of BP-5. As such, this work provides a new perspective for the removal of benzophenone-type ultraviolet absorbers from real environmental samples.
{"title":"Ionic liquid functionalized polymer: An effective, rapid and recyclable adsorbent for selective removal of benzophenone-type ultraviolet absorbers from water","authors":"Chen Wang, Pingning Jin, Fei Li, Xia Zhang, Jianji Wang, Jing Fan","doi":"10.1016/j.seppur.2026.137117","DOIUrl":"https://doi.org/10.1016/j.seppur.2026.137117","url":null,"abstract":"The widespread use of benzophenone (BP)-type ultraviolet absorbers has raised growing concerns on the potential risks to both ecosystems and human health. In this study, a novel ionic liquid functionalized polymer (PS-CH<ce:inf loc=\"post\">2</ce:inf>-[BrMim][Cl]) was prepared by chemical grafting and its performance to selectively remove benzophenone-5 (BP-5) from water was studied. It was shown that PS-CH<ce:inf loc=\"post\">2</ce:inf>-[BrMim][Cl] not only exhibited an ultrahigh adsorption capacity of 834.7 mg/g for BP-5 at 3200 ppm, but also effectively enriched 85.9% of trace BP-5 (2.5 ppb) from high-salinity water, with an enrichment factor as high as 859.0. The adsorbent demonstrated rapid adsorption kinetics and 10 min was enough to achieve equilibrium. Even the content of coexisting inorganic ions such as Na<ce:sup loc=\"post\">+</ce:sup>, K<ce:sup loc=\"post\">+</ce:sup>, Ca<ce:sup loc=\"post\">2+</ce:sup>, Mg<ce:sup loc=\"post\">2+</ce:sup>, Cl<ce:sup loc=\"post\">−</ce:sup> and NO<ce:inf loc=\"post\">3</ce:inf><ce:sup loc=\"post\">−</ce:sup> in water was 50,000 times higher than that of BP-5, the removal efficiency remained almost unaffected. Notably, PS-CH<ce:inf loc=\"post\">2</ce:inf>-[BrMim][Cl] also demonstrated good adsorption performance for benzophenone-type ultraviolet absorbers with similar structure to BP-5 and exhibited excellent recycling durability. Mechanism study indicated that the multiple interactions of hydrogen bonding, electrostatic attraction and ion exchange significantly contributed to the ultra-high adsorption of BP-5. As such, this work provides a new perspective for the removal of benzophenone-type ultraviolet absorbers from real environmental samples.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"9 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2026-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146146776","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-10DOI: 10.1016/j.cej.2026.173990
Wenhao Ren, Ju Wang, Yangxi Liu, Suqing Wang, Haihui Wang
In terms of poor thermal stability and inadequate electrolyte affinity, the inherent limitations of commercial polyolefin separators pose significant safety risks for next-generation high-energy-density lithium ion batteries (LIBs). Herein, we propose a bacterial cellulose (BC)-based separator through a coordination-mediated hydrogen-bond modulation strategy, creating a UIO-66-NH2@BC composite separator that synergistically integrates thermal and mechanical stability with enhanced ion transport. The design leverages Zr4+ coordination chemistry to selectively weaken interchain hydrogen-bond in BC while preserving nanofiber continuity. Subsequent in situ growth of UIO-66-NH2 at Zr4+ coordination sites introduces increased porosity (71.4% vs. 3.2% in pristine BC) with small mechanical degradation. The optimized separator demonstrates exceptional thermal stability (>250 °C) and mechanical robustness (approximately 120 MPa tensile strength). The well-designed architecture achieves enhanced electrolyte uptake (206.7%) with good electrolyte wettability, regulated ion transport with Li+ transference number of 0.62 via -NH2···PF6− interaction, and dendrite suppression with stable Li plating/stripping over 250 h at 1 mA cm−2. The LiFePO4/Li batteries assembled with UIO-66-NH2@BC separator deliver superior rate capability and cycling stability (92.83% retention after 400 cycles at 5C). This work presents an advanced BC-based separator for constructing LIBs with prominent electrochemical performance with high safety and reliability.
由于热稳定性差和电解质亲和力不足，商用聚烯烃分离器的固有局限性给下一代高能量密度锂离子电池（LIBs）带来了重大的安全风险。在此，我们提出了一种基于细菌纤维素（BC）的分离器，通过配位介导的氢键调制策略，创建了UIO-66-NH2@BC复合分离器，协同集成了热稳定性和机械稳定性以及增强的离子传输。该设计利用Zr4+配位化学选择性地削弱BC中的链间氢键，同时保持纳米纤维的连续性。随后，uuo -66- nh2在Zr4+配位位点的原位生长导致孔隙率增加（71.4%，而原始BC为3.2%），机械降解较小。优化后的分离器具有优异的热稳定性（>250 °C）和机械稳健性（约120 MPa抗拉强度）。精心设计的结构通过良好的电解质润湿性提高了电解质摄取（206.7%），通过-NH2···PF6 -相互作用调节了离子传输（Li+转移数为0.62），并在1 mA cm−2下在250 h内稳定地镀/剥离Li来抑制枝晶。与UIO-66-NH2@BC分离器组装的LiFePO4/Li电池具有卓越的倍率能力和循环稳定性（在5C下400次 循环后保持92.83%）。本文介绍了一种新型的基于bc的电化学性能优异、安全可靠的锂离子电池分离器。
{"title":"Coordination-mediated hydrogen-bond engineering enables robust and heat-resistant mof-decorated bacterial cellulose separators for high-safety lithium-ion batteries","authors":"Wenhao Ren, Ju Wang, Yangxi Liu, Suqing Wang, Haihui Wang","doi":"10.1016/j.cej.2026.173990","DOIUrl":"https://doi.org/10.1016/j.cej.2026.173990","url":null,"abstract":"In terms of poor thermal stability and inadequate electrolyte affinity, the inherent limitations of commercial polyolefin separators pose significant safety risks for next-generation high-energy-density lithium ion batteries (LIBs). Herein, we propose a bacterial cellulose (BC)-based separator through a coordination-mediated hydrogen-bond modulation strategy, creating a UIO-66-NH<ce:inf loc=\"post\">2</ce:inf>@BC composite separator that synergistically integrates thermal and mechanical stability with enhanced ion transport. The design leverages Zr<ce:sup loc=\"post\">4+</ce:sup> coordination chemistry to selectively weaken interchain hydrogen-bond in BC while preserving nanofiber continuity. Subsequent in situ growth of UIO-66-NH<ce:inf loc=\"post\">2</ce:inf> at Zr<ce:sup loc=\"post\">4+</ce:sup> coordination sites introduces increased porosity (71.4% vs. 3.2% in pristine BC) with small mechanical degradation. The optimized separator demonstrates exceptional thermal stability (>250 °C) and mechanical robustness (approximately 120 MPa tensile strength). The well-designed architecture achieves enhanced electrolyte uptake (206.7%) with good electrolyte wettability, regulated ion transport with Li<ce:sup loc=\"post\">+</ce:sup> transference number of 0.62 via -NH<ce:inf loc=\"post\">2</ce:inf>···PF<ce:inf loc=\"post\">6</ce:inf><ce:sup loc=\"post\">−</ce:sup> interaction, and dendrite suppression with stable Li plating/stripping over 250 h at 1 mA cm<ce:sup loc=\"post\">−2</ce:sup>. The LiFePO<ce:inf loc=\"post\">4</ce:inf>/Li batteries assembled with UIO-66-NH<ce:inf loc=\"post\">2</ce:inf>@BC separator deliver superior rate capability and cycling stability (92.83% retention after 400 cycles at 5C). This work presents an advanced BC-based separator for constructing LIBs with prominent electrochemical performance with high safety and reliability.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"7 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2026-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146146859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-10DOI: 10.26599/frict.2025.9441077
Zehua Lu, Huaiju Liu, Peitang Wei, Damijan Zorko
A timely trend in gear transmission involves the replacement of steel with polymers. Nevertheless, the absence of fundamental durability data for polymer gears impedes their reliable application during power transmission. The expensive and time-consuming gear fatigue experiments make it impossible to rely merely on experimental data. In this study, a strategy for contact fatigue life prediction of polymer gears via an experimental-simulated hybrid data-driven model is presented. The hybrid data are established with a certain mixture ratio of experimental and simulation data and are augmented by the conditional tabular generative adversarial network (CTAB-GAN) algorithm. This specific algorithm was combined with the extreme gradient boosting (XGBoost) algorithm to predict the contact fatigue life of gears made from different polymer materials, with the prediction accuracy controlled within a 3-fold scatter band. Moreover, an empirical predictive formula for contact fatigue life was developed. The hybrid data-driven model, which merges experimental and simulated data, allows for efficient estimation of fatigue life and material selection strategies, generating insight into the anti-fatigue design of polymer gears.
{"title":"A strategy for contact fatigue life prediction of polymer gears via an experimental-simulated hybrid data-driven model","authors":"Zehua Lu, Huaiju Liu, Peitang Wei, Damijan Zorko","doi":"10.26599/frict.2025.9441077","DOIUrl":"https://doi.org/10.26599/frict.2025.9441077","url":null,"abstract":" <p>A timely trend in gear transmission involves the replacement of steel with polymers. Nevertheless, the absence of fundamental durability data for polymer gears impedes their reliable application during power transmission. The expensive and time-consuming gear fatigue experiments make it impossible to rely merely on experimental data. In this study, a strategy for contact fatigue life prediction of polymer gears via an experimental-simulated hybrid data-driven model is presented. The hybrid data are established with a certain mixture ratio of experimental and simulation data and are augmented by the conditional tabular generative adversarial network (CTAB-GAN) algorithm. This specific algorithm was combined with the extreme gradient boosting (XGBoost) algorithm to predict the contact fatigue life of gears made from different polymer materials, with the prediction accuracy controlled within a 3-fold scatter band. Moreover, an empirical predictive formula for contact fatigue life was developed. The hybrid data-driven model, which merges experimental and simulated data, allows for efficient estimation of fatigue life and material selection strategies, generating insight into the anti-fatigue design of polymer gears.</p> ","PeriodicalId":12442,"journal":{"name":"Friction","volume":"39 1","pages":""},"PeriodicalIF":6.8,"publicationDate":"2026-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146146039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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