AIP Advances最新文献

Computational design of a 3D magnetic particle imaging (MPI) prototype. 三维磁粒子成像（MPI）样机的计算设计。

IF 1.7 4区物理与天体物理

AIP Advances Pub Date : 2026-03-06 eCollection Date: 2026-03-01 DOI: 10.1063/9.0000971

Shahriar Mostufa, Bahareh Rezaei, Kai Wu

{"title":"Computational design of a 3D magnetic particle imaging (MPI) prototype.","authors":"Shahriar Mostufa, Bahareh Rezaei, Kai Wu","doi":"10.1063/9.0000971","DOIUrl":"10.1063/9.0000971","url":null,"abstract":"Magnetic particle imaging (MPI) is an emerging imaging modality that exploits the magnetization response of magnetic nanoparticle tracers. While MPI offers substantially higher resolution compared to magnetic resonance imaging, its translation to human-scale applications remains limited. These challenges stem from the requirement of high-intensity electric currents to generate strong magnetic fields, as well as reduced field uniformity with increasing coil spacing. To overcome these barriers, comprehensive simulation studies are essential for guiding MPI prototype design and performance optimization. In this work, we present a finite element method (FEM)-based design of a three-dimensional (3D) MPI prototype. The system integrates electromagnetic coils for the selection, drive, and focus fields, along with a gradiometer configuration for signal reception. Each coil's geometry and magnetic field were first simulated independently to validate its ability to generate the desired magnetic field and subsequently combined into a full-system design with time-domain input excitation signals. This framework achieved 3D field-free point (FFP) scanning within a 20 mm3 field of view. The selection field provided a gradient of 4, 2, and 2 T/m in z axis, y axis, and x axis, respectively, the drive field produced 20 mT, and the focus fields generated 40 mT (z-axis) and 20 mT (y-axis), enabling controlled spatial movement of the FFP. Overall, this study establishes a complete 3D FEM simulation framework for MPI system design and lays the foundation for future optimization toward clinical-scale applications.","PeriodicalId":7619,"journal":{"name":"AIP Advances","volume":"16 3","pages":"035003"},"PeriodicalIF":1.7,"publicationDate":"2026-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12967246/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147375818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Conductive elastomer-integrated triboelectric nanogenerator for self-powered motion sensing and injury warning 用于自供电运动传感和损伤预警的导电弹性体集成摩擦电纳米发电机

4区物理与天体物理

AIP Advances Pub Date : 2026-02-01 DOI: 10.1063/5.0315439

Keren Pang, Jingying Lin, Xiaoqian Wang

{"title":"Conductive elastomer-integrated triboelectric nanogenerator for self-powered motion sensing and injury warning","authors":"Keren Pang, Jingying Lin, Xiaoqian Wang","doi":"10.1063/5.0315439","DOIUrl":"https://doi.org/10.1063/5.0315439","url":null,"abstract":"Wearable motion-sensing systems are increasingly used in health assessment and sports protection, creating a demand for deformable materials that can operate without external power supplies. Here, we construct a triboelectric device based on a poly(tetramethylene ether glycol)/4,4′-dicyclohexylmethane diisocyanate elastomer (PH elastomer), in which dynamic cross-linking and ionic transport pathways endow the material with high stretchability, reliable conductivity, and structural stability. These features enable the PH film to serve directly as the ionic electrode of a self-powered triboelectric nanogenerator (TENG). Under periodic contact–separation operation, the PH-TENG delivers an open-circuit voltage (VOC) of 353.2 V, a short-circuit current (ISC) of 33.6 μA, and a maximum transferred charge (QSC) of 84.2 nC, corresponding to a maximum output power of 1.95 mW. Owing to the material’s mechanical responsiveness, the device generates distinct electrical signatures under variations in bending angle, applied pressure, and motion amplitude. These sensing responses make it possible to distinguish different types of human movements, such as walking, running, and various hand or finger actions, while also enabling the device to recognize deviations from normal motion that may signal emerging injuries. The results underscore the capability of the PH-TENG as a robust platform for self-powered motion monitoring and sports-related injury warning.","PeriodicalId":7619,"journal":{"name":"AIP Advances","volume":"16 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147381481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Coaxial capacitor (COCA) coil for stretchable arrays in ultrahigh-field MRI. 用于超高场MRI可拉伸阵列的同轴电容器（COCA）线圈。

IF 1.4 4区物理与天体物理

AIP Advances Pub Date : 2026-01-28 eCollection Date: 2026-01-01 DOI: 10.1063/5.0304790

Ming Lu, Pingping Li, Jason E Moore, Xiaoyu Jiang, John C Gore, Xinqiang Yan

{"title":"Coaxial capacitor (COCA) coil for stretchable arrays in ultrahigh-field MRI.","authors":"Ming Lu, Pingping Li, Jason E Moore, Xiaoyu Jiang, John C Gore, Xinqiang Yan","doi":"10.1063/5.0304790","DOIUrl":"10.1063/5.0304790","url":null,"abstract":"Stretchable RF coils offer the potential to improve MRI performance by conforming closely to patient anatomy, regardless of patient size, thereby enhancing both signal-to-noise ratio (SNR) and patient comfort. In this work, we investigate a stretchable receive array design based on the coaxial capacitor (COCA) coil for 7 T MRI, constructed primarily from ultra-flexible Litz wire stitched onto elastic fabric substrates. The COCA coil eliminates the need for lumped capacitors and maintains stable decoupling performance under transverse stretching, provided that the overlapped area and the coil area change proportionally as the coil is stretched. Bench tests and phantom imaging experiments demonstrate that elliptical COCA coils (in the non-stretched state) maintain consistent decoupling characteristics across stretch ratios up to ×1.3 and outperform fixed arrays in SNR across varying phantom sizes. The proposed design shows strong potential for integration into wearable coil arrays, enabling improved imaging quality and adaptability for diverse patient anatomies.","PeriodicalId":7619,"journal":{"name":"AIP Advances","volume":"16 1","pages":"015129"},"PeriodicalIF":1.4,"publicationDate":"2026-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12854774/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146103543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Coffee-ring-suppressed electrospray of thick Cs2TeI6 film for high-sensitivity direct x-ray detector 用于高灵敏度直接x射线探测器的厚Cs2TeI6薄膜咖啡环抑制电喷雾

4区物理与天体物理

AIP Advances Pub Date : 2026-01-01 DOI: 10.1063/5.0306258

Mengxin Yan, Hanxiao Peng, Yunchong Li, Haomiao Li, Zhihang Zhang, Zubair Maroof, Zhaoxin Wu, Bo Jiao

{"title":"Coffee-ring-suppressed electrospray of thick Cs2TeI6 film for high-sensitivity direct x-ray detector","authors":"Mengxin Yan, Hanxiao Peng, Yunchong Li, Haomiao Li, Zhihang Zhang, Zubair Maroof, Zhaoxin Wu, Bo Jiao","doi":"10.1063/5.0306258","DOIUrl":"https://doi.org/10.1063/5.0306258","url":null,"abstract":"Metal halide perovskites have recently emerged as promising candidates for direct-conversion x-ray detectors due to their high x-ray attenuation coefficient and favorable transport behavior. However, the fabrication of thick (&gt;10 μm), large-area perovskite films with spatial uniformity remains a critical challenge, primarily limited by the coffee-ring induced defects. Here, we developed a modified electrospray (E-spray) method for coffee-ring-suppressed thick Cs2TeI6 films, incorporating two key innovations: (1) a mesoporous Al2O3 modification layer was used to slow down the solute transportation inside the spray droplets, and (2) trimethylbenzene additive was used to establish a counter-directed Marangoni flow inside the droplet. The modified E-spray process yielded 15 μm-thick Cs2TeI6 films with a root-mean-square roughness of 3.3 μm (&gt;8 μm for conventional E-spray). The resulting x-ray detector exhibited a high sensitivity of 2401 μC Gy−1 cm−2 and a low detection limit of 5.68 nGys−1. Our work demonstrates a generalizable E-spray strategy for thickness-scalable perovskite films, addressing the critical trade-off between thickness and uniformity. The achieved detector performance suggests potential for low-dose medical imaging applications.","PeriodicalId":7619,"journal":{"name":"AIP Advances","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147906360","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of calcium sulphate dihydrate on early hydration of amorphous C12A7 二水合硫酸钙对非晶C12A7早期水化的影响

4区物理与天体物理

AIP Advances Pub Date : 2026-01-01 DOI: 10.1063/5.0302787

Jiangtao Zhang, Deke Fan, Jian Wang, Lifu Shan, Yuxue Zhu, Ruijun Gao, Haiyang Qu

引用次数: 0

One-step redox precipitation engineering Pt–Mn solid solutions in hollow MnO2 for ultralow-temperature CH4 oxidation 一步氧化还原沉淀工程Pt-Mn固溶体在空心二氧化锰中进行超低温CH4氧化

4区物理与天体物理

AIP Advances Pub Date : 2025-12-01 DOI: 10.1063/5.0309944

Fang Xiang-hong, Ruikun Zhang, Zeng Xiaoyi

引用次数: 0

Comparative analysis of MHD boundary layer flow of TiO2–SiO2–Fe3O4/water hybrid nanofluid over a stretching surface in porous media 多孔介质中TiO2-SiO2-Fe3O4 /水混合纳米流体在拉伸表面上的MHD边界层流动对比分析

4区物理与天体物理

AIP Advances Pub Date : 2025-12-01 DOI: 10.1063/5.0297965

R. Kavitha, Ravi Samikannu, Nyagong Santino David Ladu

{"title":"Comparative analysis of MHD boundary layer flow of TiO2–SiO2–Fe3O4/water hybrid nanofluid over a stretching surface in porous media","authors":"R. Kavitha, Ravi Samikannu, Nyagong Santino David Ladu","doi":"10.1063/5.0297965","DOIUrl":"https://doi.org/10.1063/5.0297965","url":null,"abstract":"This study presents a comparative analysis of the magnetohydrodynamic (MHD) boundary layer flow of TiO2–SiO2–Fe3O4/water hybrid nanofluids over a stretching surface embedded in a porous medium. A two-dimensional, steady, viscous, and incompressible hybrid nanofluid model is considered, with water as the base fluid and titanium oxide (TiO2), silicon oxide (SiO2), and black iron oxide (Fe3O4) nanoparticles dispersed within it. The governing nonlinear partial differential equations are derived based on boundary layer approximations and are solved numerically using the fourth-order Runge–Kutta method coupled with the shooting technique. A detailed comparison is made among the three hybrid nanofluids under the effects of magnetic field strength, porous medium characteristics, radiation, and heat source parameters. The results reveal that the Fe3O4 hybrid nanofluid consistently exhibits a higher skin friction coefficient and an enhanced Nusselt number compared to TiO2 and SiO2 nanofluids, indicating superior momentum and thermal transfer characteristics. Meanwhile, the SiO2 nanofluid shows relatively lower values due to its comparatively lower thermal conductivity. This study provides valuable insights into selecting appropriate hybrid nanofluids for engineering applications involving MHD flows and thermal systems in porous media.","PeriodicalId":7619,"journal":{"name":"AIP Advances","volume":"15 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.aip.org/aip/adv/article-pdf/doi/10.1063/5.0297965/20835287/125316_1_5.0297965.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147906645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Rapid and sustainable fabrication of antibacterial chitosan/PVA–SiO2 nanofiber air filters by needleless electrospinning 无针静电纺丝快速可持续制备抗菌壳聚糖/ PVA-SiO2纳米纤维空气过滤器

4区物理与天体物理

AIP Advances Pub Date : 2025-10-01 DOI: 10.1063/5.0280597

Suzhe Li, Dong Xie, Li Song, Chen Yang, Zixuan Yuan

{"title":"Rapid and sustainable fabrication of antibacterial chitosan/PVA–SiO2 nanofiber air filters by needleless electrospinning","authors":"Suzhe Li, Dong Xie, Li Song, Chen Yang, Zixuan Yuan","doi":"10.1063/5.0280597","DOIUrl":"https://doi.org/10.1063/5.0280597","url":null,"abstract":"With the growing demand for air purification, the large-scale deployment of filtration materials is of increasing importance. However, conventional nanofiber membranes derived from synthetic polymers often generate non-degradable waste upon disposal, which can lead to secondary environmental pollution. In this study, chitosan and polyvinyl alcohol were used as the primary raw materials to fabricate environmentally friendly nanofiber membranes via needleless electrospinning. Under optimized processing conditions (60 kV, 20 min), the resulting membranes exhibited excellent filtration performance, achieving a quality factor of 0.059 41 Pa−1, high filtration efficiencies of 96.94% for PM2.5 and 99.34% for PM10, and a pressure drop of only 15.7 Pa. Moreover, the membranes demonstrated complete (100%) antibacterial efficacy against Staphylococcus aureus and Escherichia coli within 16 h under our experimental conditions. This work presents a rapid, sustainable, and scalable strategy for producing high-performance air filtration membranes that combine efficient particulate removal, low air resistance, and antibacterial properties, thereby offering a promising solution to reduce secondary pollution from spent filters.","PeriodicalId":7619,"journal":{"name":"AIP Advances","volume":"15 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147902613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Testing of silica-chitosan decorated NiFe2O4 magnetic nano-adsorbents for adsorption of Pb(II), Zn(II), and Cd(II) ions from aqueous solution 二氧化硅-壳聚糖修饰NiFe2O4磁性纳米吸附剂对水溶液中Pb（II）、Zn（II）和Cd（II）离子的吸附性能研究

4区物理与天体物理

AIP Advances Pub Date : 2025-10-01 DOI: 10.1063/5.0291245

Tareq Kareri, Syed Murad Ali Shah, Shazia Shukrullah, Muhammad Irfan, Mohammed Jalalah, Muawia Abdelkafi Magzoub Mohamed Ali

{"title":"Testing of silica-chitosan decorated NiFe2O4 magnetic nano-adsorbents for adsorption of Pb(II), Zn(II), and Cd(II) ions from aqueous solution","authors":"Tareq Kareri, Syed Murad Ali Shah, Shazia Shukrullah, Muhammad Irfan, Mohammed Jalalah, Muawia Abdelkafi Magzoub Mohamed Ali","doi":"10.1063/5.0291245","DOIUrl":"https://doi.org/10.1063/5.0291245","url":null,"abstract":"Water contamination with toxic heavy metals such as Pb(II), Zn(II), and Cd(II) poses a serious environmental and health challenge. This study aims to develop efficient and reusable nanoadsorbents for wastewater treatment. Chitosan-functionalized NiFe2O4@SiO2 (NiFe2O4@SiO2-chitosan) core–shell nanospheres were synthesized using a co-precipitation method to produce NiFe2O4 nanoparticles, followed by silica coating and surface modification with chitosan. The functionalized nanocomposites demonstrated high adsorption capacities of 258.39 mg/g for Pb(II), 246.91 mg/g for Zn(II), and 224.21 mg/g for Cd(II). The adsorption behavior aligned with the Langmuir isotherm model, indicating monolayer coverage, while the kinetics followed a pseudo-second-order model, confirming chemisorption via coordination with the amino groups. The nanospheres also exhibited superparamagnetic behavior with a magnetization (Ms) of 12.41 emu/g, enabling rapid magnetic separation, and retained a removal efficiency of 77%–81% after five regeneration cycles. Overall, NiFe2O4@SiO2-chitosan nanocomposites demonstrate strong potential as sustainable, reusable, and magnetically separable adsorbents for the effective removal of heavy metals from wastewater.","PeriodicalId":7619,"journal":{"name":"AIP Advances","volume":"15 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147331815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Structure and mechanical properties of high-entropy carbide (Ti0.2Zr0.2Nb0.2Ta0.2Cr0.2)C: Effect of sintering method 高熵碳化物（Ti0.2Zr0.2Nb0.2Ta0.2Cr0.2）C的组织与力学性能：烧结方法的影响

4区物理与天体物理

AIP Advances Pub Date : 2025-09-01 DOI: 10.1063/5.0283206

Wenjie Guo, Jin You, Yanrong Li, Yilong Pan, Tian Cui

{"title":"Structure and mechanical properties of high-entropy carbide (Ti0.2Zr0.2Nb0.2Ta0.2Cr0.2)C: Effect of sintering method","authors":"Wenjie Guo, Jin You, Yanrong Li, Yilong Pan, Tian Cui","doi":"10.1063/5.0283206","DOIUrl":"https://doi.org/10.1063/5.0283206","url":null,"abstract":"High-entropy carbide ceramics (HECCs) have attracted increasing attention for extreme-environmental applications due to their unique multi-elemental compositions and outstanding mechanical properties. While most existing studies focus on IVB and VB transition metals synthesized via spark plasma sintering (SPS), group VIB elements, such as Cr, have been comparatively less studied. In this study, a Cr-containing HECC, (Ti0.2Zr0.2Nb0.2Ta0.2Cr0.2)C, was synthesized via both high temperature and high pressure (HTHP) sintering and SPS. Comparative analysis revealed that HTHP processing at 5 GPa and 1600 °C produced ultrafine grains (∼0.41 μm), moderate density (94.2%), and enhanced fracture toughness (5.05 ± 0.37 MPa m1/2). In contrast, SPS at 1800 °C yielded near-theoretical density (99.4%) and higher nanohardness (34.15 ± 0.51 GPa) but resulted in significant grain coarsening (∼6.24 μm) and reduced fracture toughness (∼3.5 MPa m1/2). These findings highlight the distinct structure–property relationships governed by the sintering route and provide insights into tailoring HECC performance for demanding service conditions.","PeriodicalId":7619,"journal":{"name":"AIP Advances","volume":"15 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.aip.org/aip/adv/article-pdf/doi/10.1063/5.0283206/20678780/095003_1_5.0283206.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147331376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0