Journal of Applied Physics最新文献_第4页

On the instability of single-axis acoustic levitation under radial perturbations 论单轴声悬浮在径向扰动下的不稳定性

IF 3.2 3区物理与天体物理

Journal of Applied Physics Pub Date : 2024-09-17 DOI: 10.1063/5.0218163

Xiaozhen Wang, Qin Chang, Pengfei Wu, Delong Xu, Weijun Lin, Hao Chen

{"title":"On the instability of single-axis acoustic levitation under radial perturbations","authors":"Xiaozhen Wang, Qin Chang, Pengfei Wu, Delong Xu, Weijun Lin, Hao Chen","doi":"10.1063/5.0218163","DOIUrl":"https://doi.org/10.1063/5.0218163","url":null,"abstract":"Acoustic levitation is widely used in non-container measurement and non-contact manipulation. Particles in the single-axis acoustic levitation are easily unstable in the radial direction under external perturbations. In order to explore the instability in the acoustic levitation during radial perturbations, a nonlinear acoustic levitation model considering the coupling of radial and axial vibration is proposed to analyze the dominant factors influencing the levitation stability, an acoustic levitation system consisting of a transducer and a plane reflector is established, and high-speed photography is used to observe the vibration behavior of the particle with large radial vibration and the levitation stability. The simulation results are compared and verified with the experiments, which indicate that the reduction in axial trapping stiffness due to radial vibration plays a vital role in the levitation instability. The present model can characterize the radial anti-interference ability of different levitators as well as predict the movement trajectories of levitated particles after being disturbed, which is helpful to optimize the design of acoustic levitators and provide guidance for acoustic manipulation.","PeriodicalId":15088,"journal":{"name":"Journal of Applied Physics","volume":"24 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142260290","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

Low-temperature formation of Ti2AlN during post-deposition annealing of reactive multilayer systems 反应多层系统沉积后退火过程中低温形成的 Ti2AlN

IF 3.2 3区物理与天体物理

Journal of Applied Physics Pub Date : 2024-09-17 DOI: 10.1063/5.0230405

Moses O. Nnaji, David A. Tavakoli, Dale A. Hitchcock, Eric M. Vogel

引用次数: 0

An implicit solution for Asay foil trajectories generated by separable, sustained-production ejecta source models 可分离、持续生产喷出源模型生成的阿萨伊箔轨迹的隐式解法

IF 3.2 3区物理与天体物理

Journal of Applied Physics Pub Date : 2024-09-17 DOI: 10.1063/5.0228457

I. L. Tregillis, Aaron Koskelo

{"title":"An implicit solution for Asay foil trajectories generated by separable, sustained-production ejecta source models","authors":"I. L. Tregillis, Aaron Koskelo","doi":"10.1063/5.0228457","DOIUrl":"https://doi.org/10.1063/5.0228457","url":null,"abstract":"We present a simple implicit solution for the time-dependent trajectory of a thin Asay foil ejecta diagnostic for the general case where the impinging ejecta cloud is generated by a source function characterized by an arbitrary (sustained) time dependence and a time-independent (stationary) particle velocity distribution. In the limit that the source function time dependence becomes a delta function, this solution—which is amenable to rapid numerical calculations of arbitrary accuracy—exactly recovers a previously published solution for the special case of instantaneous ejecta production. We also derive simple expressions for the free-surface arrival (catch-up) time as well as the true ejecta areal mass accumulation on the accelerating foil and place bounds on the level of error incurred when applying instant-production mass solutions to a sustained-production trajectory. We demonstrate these solutions with example calculations for hypothetical source functions spanning a wide range of ejecta production durations, velocity distributions, and temporal behaviors. These calculations demonstrate how the foil trajectory is often insensitive to the temporal dependence of the source function, instead being dominated by the velocity distribution. We quantify this insensitivity using a “compatibility score” metric. Under certain conditions, one may capitalize upon this insensitivity to obtain a good approximation of the second integral of the velocity distribution from the observed foil trajectory.","PeriodicalId":15088,"journal":{"name":"Journal of Applied Physics","volume":"210 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142269455","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

Cryogenic temperatures promote the pressure-induced polymorphic transition in CoCrFeMnNi high entropy alloy 低温促进 CoCrFeMnNi 高熵合金的压力诱导多晶转变

IF 3.2 3区物理与天体物理

Journal of Applied Physics Pub Date : 2024-09-17 DOI: 10.1063/5.0220107

Magnus Hörnqvist Colliander, Dörthe Haase, Konstantin Glazyrin, Aina Edgren, Pan Wang, Malcolm Guthrie, Sheng Guo

引用次数: 0

Exploring the synergy between hot-electron dynamics and active plasmonics: A perspective 探索热电子动力学与有源等离子体之间的协同作用：透视

IF 3.2 3区物理与天体物理

Journal of Applied Physics Pub Date : 2024-09-13 DOI: 10.1063/5.0216205

Anjan Goswami, Andrew S. Kim, Wenshan Cai

{"title":"Exploring the synergy between hot-electron dynamics and active plasmonics: A perspective","authors":"Anjan Goswami, Andrew S. Kim, Wenshan Cai","doi":"10.1063/5.0216205","DOIUrl":"https://doi.org/10.1063/5.0216205","url":null,"abstract":"Physical processes involving hot electrons, including their generation, transport, injection, and relaxation, have been an extensive area of research. The most widely utilized method for actuating the creation of hot electrons involves the excitation of plasmonic modes followed by their non-radiative decay, channeling the energy into these energetic carriers. Since plasmonics has already evolved into a mature field of scientific exploration, active plasmonic devices serve as an ideal platform to study hot-electron physics. In this Perspective article, we will provide the reader with a comprehensive outline of the physics underlying hot-electron dynamics. Emphasis will be placed on the characteristic timescales involved with the lifecycle of hot electrons, the generation and decay mechanisms of surface plasmon-induced hot electrons, and the material platforms suitable for such a study. Then, we will move on to discuss different temperature models used to explain the evolution of hot electrons and the changes in the optical properties of the materials they are generated in or injected into. Finally, we will focus on some of the interesting optical phenomena occurring at ultrafast timescales mediated by hot-carrier dynamics. Such a discussion is expected to incorporate valuable insights into our understanding of the synergistic relationship between hot-electron dynamics and active plasmonics, thereby paving the way for novel applications involving optoelectronics and energy conversion.","PeriodicalId":15088,"journal":{"name":"Journal of Applied Physics","volume":"17 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142260337","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

Characterizing low-frequency vibratory motion with radio-frequency cavities 利用射频空腔确定低频振动运动的特征

IF 3.2 3区物理与天体物理

Journal of Applied Physics Pub Date : 2024-09-13 DOI: 10.1063/5.0219033

Harold R. Hart-Alesch, Jay E. Sharping

{"title":"Characterizing low-frequency vibratory motion with radio-frequency cavities","authors":"Harold R. Hart-Alesch, Jay E. Sharping","doi":"10.1063/5.0219033","DOIUrl":"https://doi.org/10.1063/5.0219033","url":null,"abstract":"Radio-frequency (RF) cavities, previously employed in particle physics, quantum computing, and gravitational wave research, offer unique advantages in terms of sensitivity and non-invasiveness as a method of sensing motion in both macroscopic and microscopic systems. This research aims to address how an RF cavity can effectively detect and characterize the low-frequency vibratory motion of a room-temperature mm-scale levitated particle. In this case, the particle in question is a diamagnetically levitated slab of highly oriented pyrolytic graphite. Cavity-based identification of the slab’s rigid-body modes is substantiated by calculations of the force acting on the particle and validated through slow-motion video object tracking. We find that this system can accurately measure oscillations in all six center-of-mass degrees of freedom. Calculations indicate that this system could potentially detect forces on the scale of tens of femto-Newtons and center of mass displacements of less than 10 nm. This work provides a non-invasive method of conducting position and vibration measurements in the field of levitodynamics without the ultra-cold temperatures or bulky precision laser setups that superconducting quantum interference devices and conventional interferometric methods utilize.","PeriodicalId":15088,"journal":{"name":"Journal of Applied Physics","volume":"41 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142260340","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

IF 3.2 3区物理与天体物理

Journal of Applied Physics Pub Date : 2024-09-13 DOI: 10.1063/5.0226406

Vadim Emtsev, Nikolay Abrosimov, Vitalii Kozlovski, Stanislav Lastovskii, Gagik Oganesyan, Dmitrii Poloskin

{"title":"Bismuth-related defects in n-type silicon irradiated with protons: A comparison to similar defects formed under electron irradiation","authors":"Vadim Emtsev, Nikolay Abrosimov, Vitalii Kozlovski, Stanislav Lastovskii, Gagik Oganesyan, Dmitrii Poloskin","doi":"10.1063/5.0226406","DOIUrl":"https://doi.org/10.1063/5.0226406","url":null,"abstract":"Electrical properties of defects produced in strongly bismuth-doped silicon by 15 MeV protons are investigated in detail. Electrical measurements on irradiated samples by means of the van der Pauw technique are conducted over a wide temperature range of 20–300 K to furnish information on radiation-produced complexes. It is shown that the properties of the dominant bismuth-related defects are the same as earlier found in the electron-irradiated material. These complexes are tentatively identified as bismuth–vacancy pairs being deep donors. Their atomic configuration appears to be radically different from what is known about similar vacancy-related defects with other group-V impurities. These bismuth-related pairs are stable up to T ≈ 300 °C. Some special features of defect formation and annealing processes of radiation defects in bismuth-doped silicon subjected to electron and proton irradiation are discussed. This information may be of advantage in modeling impurity-related complexes containing oversized impurity atoms in silicon.","PeriodicalId":15088,"journal":{"name":"Journal of Applied Physics","volume":"11 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142269456","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

On the effect of polarization relaxation on dielectric breakdown 极化弛豫对介质击穿的影响

IF 3.2 3区物理与天体物理

Journal of Applied Physics Pub Date : 2024-09-13 DOI: 10.1063/5.0217634

Serge Blonkowski

{"title":"On the effect of polarization relaxation on dielectric breakdown","authors":"Serge Blonkowski","doi":"10.1063/5.0217634","DOIUrl":"https://doi.org/10.1063/5.0217634","url":null,"abstract":"This article discusses the effect of polarization relaxation on dielectric breakdown. We establish analytical statistical Weibull distributions, taking into account the changing local electric field instead of the usual static field in acceleration models. The time dependence of the local field is expressed using the universal Curie–Von Schweidler law. The derived distribution fits well with various observations on time-to-breakdown statistical distributions. In the case of voltage square pulse alternative stress, the calculated time to breakdown follows a power law with stress frequency, regardless of the field dependence of the acceleration model, consistent with observations. The dielectric lifetime is longer compared to continuous voltage stress, as observed in transistors and integrated capacitors. The analytical expression of the power law exponent depends on the field acceleration model and polarization current. It matches well with the measured values for metal–oxide–semiconductor and metal insulator metal capacitors with different dielectrics. The power law exponent increases with the static dielectric constant. The Weibull shape factor is shown to be lower in the AC mode than in the DC mode, as observed. The AC signal duty factor effect decreases the lifetime in the AC mode. Finally, we demonstrate that the consequence of polarization relaxation also affects the lifetime in the DC mode. The acceleration factor and lifetime projections are close to power laws with the field, regardless of the static field dependence of the acceleration model.","PeriodicalId":15088,"journal":{"name":"Journal of Applied Physics","volume":"86 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142260335","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

Shock equation of state experiments in MgO up to 1.5 TPa and the effects of optical depth on temperature determination 高达 1.5 TPa 的氧化镁冲击状态方程实验以及光学深度对温度测定的影响

IF 3.2 3区物理与天体物理

Journal of Applied Physics Pub Date : 2024-09-13 DOI: 10.1063/5.0226765

Zixuan Ye, Raymond F. Smith, Marius Millot, Melissa Sims, Dimitrios Tsapetis, Michael D. Shields, Saransh Singh, Anirudh Hari, June K. Wicks

{"title":"Shock equation of state experiments in MgO up to 1.5 TPa and the effects of optical depth on temperature determination","authors":"Zixuan Ye, Raymond F. Smith, Marius Millot, Melissa Sims, Dimitrios Tsapetis, Michael D. Shields, Saransh Singh, Anirudh Hari, June K. Wicks","doi":"10.1063/5.0226765","DOIUrl":"https://doi.org/10.1063/5.0226765","url":null,"abstract":"Laser-driven shock compression enables an experimental study of phase transitions at unprecedented pressures and temperatures. One example is the shock Hugoniot of magnesium oxide (MgO), which crosses the B1–B2-liquid triple point at 400–600 GPa, 10 000–13 000 K (0.86–1.12 eV). MgO is a major component within the mantles of terrestrial planets and has long been a focus of high-pressure research. Here, we combine time-resolved velocimetry and pyrometry measurements with a decaying shock platform to obtain pressure–temperature data on MgO from 300 to 1500 GPa and 9000 to 50 000 K. Pressure–temperature–density Hugoniot data are reported at 1500 GPa. These data represent the near-instantaneous response of an MgO [100] single crystal to shock compression. We report on a prominent temperature anomaly between 400 and 460 GPa, in general agreement with previous shock studies, and draw comparison with equation-of-state models. We provide a detailed analysis of the decaying shock compression platform, including a treatment of a pressure-dependent optical depth near the shock front. We show that if the optical depth of the shocked material is larger than 1 μm, treating the shock front as an optically thick gray body will lead to a noticeable overestimation of the shock temperature.","PeriodicalId":15088,"journal":{"name":"Journal of Applied Physics","volume":"1 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142260338","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

Ablation characteristics of tungsten with ultra-short laser pulses 超短激光脉冲对钨的烧蚀特性

IF 3.2 3区物理与天体物理

Journal of Applied Physics Pub Date : 2024-09-13 DOI: 10.1063/5.0222073

Steffen Mittelmann, Jan Riedlinger, Benedikt Buchner, Thomas Schwarz-Selinger, Matej Mayer, Georg Pretzler

引用次数: 0