Annalen der Physik最新文献_第6页

(Ann. Phys. 4/2025) (安。phy。4/2025)

IF 2.2 4区物理与天体物理

Annalen der Physik Pub Date : 2025-04-08 DOI: 10.1002/andp.202570008

引用次数: 0

Metallic Coatings in the Diagnosis of Run-Away Electrons in Magnetic Confinement Fusion Facilities 金属涂层在磁约束聚变装置中逃逸电子诊断中的应用

IF 2.2 4区物理与天体物理

Annalen der Physik Pub Date : 2025-04-08 DOI: 10.1002/andp.202400428

K. Nowakowska-Langier, M. Kuk, R. Kwiatkowski, A. Malinowska, R. Mirowski, M. Rabiński, S. Romaniuk, J. Żebrowski

{"title":"Metallic Coatings in the Diagnosis of Run-Away Electrons in Magnetic Confinement Fusion Facilities","authors":"K. Nowakowska-Langier, M. Kuk, R. Kwiatkowski, A. Malinowska, R. Mirowski, M. Rabiński, S. Romaniuk, J. Żebrowski","doi":"10.1002/andp.202400428","DOIUrl":"https://doi.org/10.1002/andp.202400428","url":null,"abstract":"The article presents the application of a low-temperature plasma technique accomplished by controlled arc discharges in ultra-high vacuum deposition of metallic coatings on ceramic substrates. Such metallic coatings are very important in the diagnostic devices within the magnetic confinement fusion facilities, especially in small and medium-sized tokamaks. The application of molybdenum coating on the diamond substrate necessary for Cherenkov-type detectors applied as a runaway electron diagnosis is an example of such an application in diagnostic techniques. Presented research focused on the structural analysis of molybdenum coatings and the influence of different synthesis parameters on coatings' diverse structures and thicknesses. The stability of molybdenum coatings is explored using the Rod Plasma Injector IBIS2 facility. Pulsed plasma interactions induced noticeable surface changes, mirroring the destruction observed after exposure to up to 10 plasma pulses. In addition, the characteristics of Cherenkov detector molybdenum coating destruction after experimental campaigns are presented.","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"537 7","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144615224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Issue Information: Ann. Phys. 4/2025 发布信息：Ann。理论物理的4/2025

IF 2.2 4区物理与天体物理

Annalen der Physik Pub Date : 2025-04-08 DOI: 10.1002/andp.202570009

引用次数: 0

Stochastic Hydrodynamic Velocity Field and the Representation of Langevin Equations 随机水动力速度场及朗格万方程的表示

IF 2.2 4区物理与天体物理

Annalen der Physik Pub Date : 2025-03-27 DOI: 10.1002/andp.202500062

Massimiliano Giona, Davide Cocco, Giuseppe Procopio

{"title":"Stochastic Hydrodynamic Velocity Field and the Representation of Langevin Equations","authors":"Massimiliano Giona, Davide Cocco, Giuseppe Procopio","doi":"10.1002/andp.202500062","DOIUrl":"https://doi.org/10.1002/andp.202500062","url":null,"abstract":"The fluctuation-dissipation theorem, in the Kubo original formulation, is based on the decomposition of the thermal agitation forces into a dissipative contribution and a stochastically fluctuating term. This decomposition can be avoided by introducing a stochastic velocity field, with correlation properties deriving from linear response theory. Here, this field is adopted as the comprehensive hydrodynamic/fluctuational driver of the kinematic equations of motion in the absence of any external forcing. With this description, it is shown that the Langevin equations for a Brownian particle interacting with a solvent fluid become particularly simple as it is no longer necessary to integrate the momentum equation, and can be applied even in those cases in which the classical approach, based on the concept of a stochastic thermal force, displays intrinsic difficulties e.g., in the presence of the Basset force. This formulation provides in the overdamped approximation a more regular formulation consistent with the statistical properties of particle velocity. This approach is also applied in the broader context of the dynamic theory of Generalized Langevin Equations in order to analyze the stochastic realizability of the dynamics. A condition based on the spectral properties of the Fredholm operator associated with the Kubo correlation function is derived to assess the stochastic realizability in the broad sense.","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"537 6","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/andp.202500062","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144245161","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

On Nanocones as Gravitational Analog Systems 纳米锥作为引力模拟系统的研究

IF 2.5 4区物理与天体物理

Annalen der Physik Pub Date : 2025-03-26 DOI: 10.1002/andp.202400448

F. L. Carneiro, B. C. C. Carneiro, D. L. Azevedo, S. C. Ulhoa

{"title":"On Nanocones as Gravitational Analog Systems","authors":"F. L. Carneiro, B. C. C. Carneiro, D. L. Azevedo, S. C. Ulhoa","doi":"10.1002/andp.202400448","DOIUrl":"https://doi.org/10.1002/andp.202400448","url":null,"abstract":"This study investigates the fundamental properties of graphene and boron nitride (BN) nanostructures, exploring their torsional energy characteristics within the framework of Teleparallel Equivalent of General Relativity (TEGR). By constructing nanocones with disclination defects in these materials, the linear dependence of torsional energy on the disclination angle is analyzed, as predicted by TEGR. The qualitative validation of TEGR's energy expression is supported by simulations, which show a strong correlation between torsional energy and the disclination angle, consistent with theoretical predictions. Additionally, a quantitative analysis is proposed by estimating the coupling constant <math>\u0000 <semantics>\u0000 <mi>κ</mi>\u0000 <annotation>$kappa$</annotation>\u0000 </semantics></math> associated with TEGR through molecular simulations and Density Functional Theory (DFT) calculations. The results suggest that <math>\u0000 <semantics>\u0000 <mi>κ</mi>\u0000 <annotation>$kappa$</annotation>\u0000 </semantics></math> reflects the interatomic forces within the materials, providing insights into the nature of spacetime and gravitational interactions on a microscopic scale. These findings contribute to the understanding of material physics and offer implications for the precision and validity of TEGR in describing gravitational phenomena.","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"537 9","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145013091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Stability and Electronic Properties of 2-D Conductive Metal–Organic Frameworks M3(C6Se6) 二维导电金属-有机骨架M3（C6Se6）的稳定性和电子性能

IF 2.2 4区物理与天体物理

Annalen der Physik Pub Date : 2025-03-26 DOI: 10.1002/andp.202400397

Yue Zhang, Feifei Xu, Hao Ren, Wen Zhao

{"title":"Stability and Electronic Properties of 2-D Conductive Metal–Organic Frameworks M3(C6Se6)","authors":"Yue Zhang, Feifei Xu, Hao Ren, Wen Zhao","doi":"10.1002/andp.202400397","DOIUrl":"https://doi.org/10.1002/andp.202400397","url":null,"abstract":"The stability and electronic properties of 2-D conducting metal–organic frameworks (MOFs) play a crucial role in their potential applications in energy-related processes. In this study, The structural stability and electronic characteristics of M3(C6Se6) (M = Cr, Mn, Fe, Co, Ni, Cu, Mo, Ru, Rh, Pd, Ir, and Pt) are systematically investigated using first-principles calculations. Formation energy calculations and ab initio molecular dynamics simulations confirm the excellent thermodynamic and thermal stability of these frameworks. Additionally, density of states (DOS) analysis reveals that nine of these structures exhibit high electrical conductivity, making them promising for electronic and electrocatalytic applications. To further understand their electronic structure, the d-band center and crystal orbital Hamilton population (COHP) are analyzed, providing insight into the bonding characteristics and electronic interactions within the frameworks. Moreover, the catalytic performance of the conductive MOFs is evaluated as multifunctional catalysts for the hydrogen evolution reaction (HER), oxygen evolution reaction (OER), and oxygen reduction reaction (ORR). This study highlights the robust stability and tunable electronic properties of M3(C6Se6), serving as a foundation for future investigations into their functional applications in energy conversion and storage technologies.","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"537 6","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144245102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Einstein's Kyoto Lecture, or the “Unofficial Nobel Prize Speech” 爱因斯坦的京都演讲，又称“非官方诺贝尔奖演讲”

IF 2.2 4区物理与天体物理

Annalen der Physik Pub Date : 2025-03-24 DOI: 10.1002/andp.202500090

Eren Simsek

引用次数: 0

Free-space Optical Computing Systems 自由空间光学计算系统

IF 2.2 4区物理与天体物理

Annalen der Physik Pub Date : 2025-03-22 DOI: 10.1002/andp.202400390

Ruiyang Chen, Weilu Gao

引用次数: 0

Mechanical Squeezing via Pump Modulation in a Double-Cavity Optomechanical System With Optical Parametric Amplifier 基于泵浦调制的光参量放大器双腔光机械系统的机械压缩