Physical Review E最新文献_第10页

Anisotropic atomic displacement drives morphological transformation of adjacent ion tracks in polyimide. 各向异性原子位移驱动聚酰亚胺中相邻离子轨迹的形态转变。

IF 2.5 3区物理与天体物理

Physical Review E Pub Date : 2026-08-01 DOI: 10.1103/5xfm-15f4

Yaohui Gu, Yuhui Hu, Binbo Li, Linyang Jiang, Patrick Kluth, Wengtao Wang, Jie Liu, Jinglai Duan

{"title":"Anisotropic atomic displacement drives morphological transformation of adjacent ion tracks in polyimide.","authors":"Yaohui Gu, Yuhui Hu, Binbo Li, Linyang Jiang, Patrick Kluth, Wengtao Wang, Jie Liu, Jinglai Duan","doi":"10.1103/5xfm-15f4","DOIUrl":"https://doi.org/10.1103/5xfm-15f4","url":null,"abstract":"Deciphering the formation mechanism and fine structures of ion tracks in polymers is crucial for understanding ion-matter interactions and exploring new applications, particularly when they are in proximity. Here, two sequentially generated and closely spaced ion tracks in polyimide are investigated at the atomic scale. We reveal that the occurrence of the first track breaks the cylindrical symmetry of transverse atomic displacement during the second track formation, leading to non-uniformity in track size and deformed shape that significantly deviates from the well-recognized core-halo concentric structure of an isolated track. More interestingly, this anisotropic atomic displacement induces a low-density region between two tracks. This region is fundamentally different from the isolated track cores, where mass loss occurs primarily through radiolytic outgassing. Mechanistic analysis further discloses that these direction-dependent atomic displacement dynamics are driven by the distinct chemical and mechanical responses of the pre-existing track and bulk material to ion energy deposition.","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"114 2-2","pages":"025428"},"PeriodicalIF":2.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149018721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Anomalous phonon dispersion near yielding in athermal crystals. 非热晶体中接近屈服的异常声子色散。

IF 2.5 3区物理与天体物理

Physical Review E Pub Date : 2026-08-01 DOI: 10.1103/3lnj-1ml1

Fumiaki Nakai, Michio Otsuki, Kuniyasu Saitoh, Hiroaki Katsuragi

引用次数: 0

Antagonistic model of random sequential adsorption of two-species discorectangles. 两种异矩形分子随机顺序吸附的拮抗模型。

IF 2.5 3区物理与天体物理

Physical Review E Pub Date : 2026-08-01 DOI: 10.1103/9gy6-2d3b

Nikolai Lebovka, Leonid A Bulavin, Nikolai Vygornitskii

引用次数: 0

Turning without fins: Quantifying the distinct kinematics and vortex dynamics of maneuvering swimming snakes. 无鳍转弯：量化机动游蛇的独特运动学和涡旋动力学。

IF 2.5 3区物理与天体物理

Physical Review E Pub Date : 2026-08-01 DOI: 10.1103/c57h-kx57

Elizabeth Gregorio, Ramiro Godoy-Diana, Anthony Herrel

{"title":"Turning without fins: Quantifying the distinct kinematics and vortex dynamics of maneuvering swimming snakes.","authors":"Elizabeth Gregorio, Ramiro Godoy-Diana, Anthony Herrel","doi":"10.1103/c57h-kx57","DOIUrl":"10.1103/c57h-kx57","url":null,"abstract":"The agile turning maneuvers of anguilliform swimmers remain one of the least studied aspects of aquatic locomotion, despite being crucial for survival in underwater environments. To change direction, animals must find a balance between minimizing their moment of inertia and maximizing torque. Anguilliform swimmers, like snakes, are highly maneuverable and accomplish this goal without the aid of limbs or pectoral fins. In this study, we quantify the differences between turning and forward swimming kinematics and hydrodynamics. We present flow field and body deformation measurements taken simultaneously by combining a volumetric three-component defocusing digital particle-tracking velocimetry system with a camera mounted above the tank for swimming kinematics. We determine how snakes manipulate their body position to change swimming direction by analyzing the swimming kinematics of six turns by six individuals as 2D projections (five Natrix maura and one Nerodia rhombifer). Analyses of the body kinematics show that snakes curl their body inwards to shift their center of mass and reduce their moment of inertia to perform faster turns. The volumetric wake measurements allow us to quantify the timing between the turning kinematics and vortex shedding and to compare it with forward swimming measurements. Our results indicate that snakes can generate substantially stronger vortices when turning; for example, the vortex force can be as much as 2.5-8.6× larger when compared to forward swimming. We also use volumetric wake measurements to show that the vortices shed during a turn have the same tubular vortex pair composition as forward swimming. These results help explain how elongated anguilliform swimmers change swimming direction. They widen our understanding of how animals use transient maneuvers to navigate aquatic environments, with implications for both natural swimmers and underwater robots.","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"114 2-1","pages":"024410"},"PeriodicalIF":2.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149018575","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

General thermodynamic approach for diffusion on a lattice. 晶格上扩散的一般热力学方法。

IF 2.5 3区物理与天体物理

Physical Review E Pub Date : 2026-08-01 DOI: 10.1103/p8qx-8ym2

M A Di Muro, M Hoyuelos

引用次数: 0

Matrix thermodynamic uncertainty relation for non-Abelian charge transport. 非阿贝尔电荷输运的矩阵热力学不确定性关系。

IF 2.5 3区物理与天体物理

Physical Review E Pub Date : 2026-08-01 DOI: 10.1103/q2yg-rp7q

Domingos S P Salazar

引用次数: 0

Large deviation properties of minimum spanning trees for random graphs. 随机图最小生成树的大偏差特性。

IF 2.5 3区物理与天体物理

Physical Review E Pub Date : 2026-08-01 DOI: 10.1103/xc5g-t9dj

Mahdi Sarikhani, Alexander K Hartmann

引用次数: 0

From Colebrook-White roughness to Nikuradse sand grains: A multiscale momentum-transfer model for turbulent friction over rough surfaces. 从Colebrook-White粗糙度到Nikuradse沙粒：粗糙表面湍流摩擦的多尺度动量传递模型。

IF 2.5 3区物理与天体物理

Physical Review E Pub Date : 2026-08-01 DOI: 10.1103/xs83-z5nk

Chien-Chia Liu, Jui-Yin Lin

{"title":"From Colebrook-White roughness to Nikuradse sand grains: A multiscale momentum-transfer model for turbulent friction over rough surfaces.","authors":"Chien-Chia Liu, Jui-Yin Lin","doi":"10.1103/xs83-z5nk","DOIUrl":"https://doi.org/10.1103/xs83-z5nk","url":null,"abstract":"Wall roughness plays a central role in determining turbulent friction in pipe flows, yet most predictive frameworks continue to characterize the wall by a single effective roughness scale. Classical datasets-notably Nikuradse's sand-grain experiments and the rough-pipe measurements of Colebrook and White-demonstrate that this description is incomplete: surfaces with comparable nominal roughness heights can exhibit markedly different friction curves, including branch splitting and multiregime behavior. Reexamining the Colebrook-White experiments, we identify clear evidence of multiscale additivity, whereby the contribution of a smaller roughness scale enters once it becomes dynamically accessible and increases approximately linearly with its areal coverage. Motivated by this observation, we develop a multiscale extension of the Gioia-Chakraborty momentum-transfer framework in which roughness elements at distinct geometric scales contribute additive increments to the total friction. In the model, each scale becomes dynamically active when its height exceeds a Reynolds-number-dependent viscous cutoff proportional to the Kolmogorov length, while its contribution is weighted by a scale-dependent coefficient representing the geometric prominence of that roughness scale. This construction generalizes the original scale-selection mechanism by allowing multiple roughness scales to participate concurrently in outer-layer momentum transfer. The resulting framework provides a unified and continuous description connecting the classical roughness-dominated Nikuradse-Strickler regime, Colebrook-White-type trends at intermediate roughness, and smooth-wall behavior. For the applications considered here, however, the model coefficients are not uniquely determined from surface properties and are selected in a data-guided manner; establishing a quantitative mapping from measured surface topography to these coefficients remains an open problem.","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"114 2-2","pages":"025109"},"PeriodicalIF":2.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149018362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermodynamic geometry of friction on graphs: Resistance, commute times, and optimal transport. 图上摩擦的热力学几何：阻力、通勤时间和最佳运输。

IF 2.5 3区物理与天体物理

Physical Review E Pub Date : 2026-08-01 DOI: 10.1103/bhr1-lplt

Jordan R Sawchuk, David A Sivak

引用次数: 0

Experimental verification of the optimal fingerprint method in a spin resonance system: Implications for complex systems. 自旋共振系统中最佳指纹图谱方法的实验验证：对复杂系统的启示。

IF 2.5 3区物理与天体物理

Physical Review E Pub Date : 2026-08-01 DOI: 10.1103/nr53-d86d

Jinbo Hu, Hong Yuan, Letian Chen, Nan Zhao, C P Sun

{"title":"Experimental verification of the optimal fingerprint method in a spin resonance system: Implications for complex systems.","authors":"Jinbo Hu, Hong Yuan, Letian Chen, Nan Zhao, C P Sun","doi":"10.1103/nr53-d86d","DOIUrl":"https://doi.org/10.1103/nr53-d86d","url":null,"abstract":"The optimal fingerprint method (OFM) serves as a potent approach for detecting and attributing climate change. However, direct experimental validation remains challenging due to the system's inherent complexity. Here we experimentally validate this method using a precisely controlled magnetic resonance system of spins, which serves as a minimal physical analog of forced noise response. Based on linear response theory (LRT), we derived the system's Green's function from spin projection noise measurements and successfully applied it to attribute the magnetic fields, yielding excellent agreement with predictions. Furthermore, our measurements confirm the existence of an optimal detection direction that maximizes the signal-to-noise ratio, a key theoretical prediction underlying the OFM. This work serves as a laboratory demonstration of LRT and OFM in detection and attribution studies, aiming to connect theoretical models with experimental observations. These findings may provide useful references for climate change science and its broader interdisciplinary applications in ecosystems, finance, social sciences, quantum sensing, and other fields.","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"114 2-1","pages":"024220"},"PeriodicalIF":2.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149018428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0