Journal of Applied Physics最新文献_第10页

Stress field measurements using quantitative schlieren 利用定量离层仪测量应力场

IF 3.2 3区物理与天体物理

Journal of Applied Physics Pub Date : 2024-09-03 DOI: 10.1063/5.0223560

S. M. Torres, J. Kimberley, M. J. Hargather

{"title":"Stress field measurements using quantitative schlieren","authors":"S. M. Torres, J. Kimberley, M. J. Hargather","doi":"10.1063/5.0223560","DOIUrl":"https://doi.org/10.1063/5.0223560","url":null,"abstract":"Quantitative schlieren analysis is extended here to optically transparent solids in quasi-static and dynamic experiments to measure stress distributions. The quasi-static experiments in polymethyl methacrylate (PMMA) compared refraction angles and stress gradients calculated from schlieren images to the analytical Flamant solution of a line load on a half-space. The quantitative schlieren measurements of the stress field in the thin sample with a load compared well to the analytical solution. The analysis method was then extended to explosive induced shock waves in PMMA. The explosive induced response of PMMA was experimentally studied using high-speed schlieren to visualize the shock propagation in conjunction with Photon Doppler Velocimetry (PDV) to record surface velocity histories. The stress state estimated from the schlieren images was compared to the stress calculated from the PDV measurements. High-speed imaging limitations caused the shock wave to not be fully resolved in the images, but was resolved in the PDV measurement. The stress state behind the shock calculated from the high-speed images followed a similar trend to the stress calculated from the PDV measurements.","PeriodicalId":15088,"journal":{"name":"Journal of Applied Physics","volume":"10 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204387","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

Effect of probe structure on wave transmission spectra of microwave cutoff probe 探头结构对微波截止探头透射波谱的影响

IF 3.2 3区物理与天体物理

Journal of Applied Physics Pub Date : 2024-08-30 DOI: 10.1063/5.0221290

Jae-Heon Lee, Hee-Jung Yeom, Gwang-Seok Chae, Jung-Hyung Kim, Hyo-Chang Lee

引用次数: 0

Integrated magneto-photonic non-volatile multi-bit memory 集成式磁光子非易失性多位存储器

IF 3.2 3区物理与天体物理

Journal of Applied Physics Pub Date : 2024-08-30 DOI: 10.1063/5.0221825

H. Pezeshki, P. Li, R. Lavrijsen, M. Heck, B. Koopmans

引用次数: 0

Improvement of memory storage capacity and prolongation of endurance/retention through H2 plasma treatment of IGZO/HZO structure 通过对 IGZO/HZO 结构进行 H2 等离子处理，提高内存存储容量并延长续航时间/保持时间

IF 3.2 3区物理与天体物理

Journal of Applied Physics Pub Date : 2024-08-29 DOI: 10.1063/5.0214983

Cheng-Rui Liu, Yu-Tzu Tsai, Yu-Ting Chen, Zheng-Kai Chen, Zi-Rong Huang, Sheng-Min Wang, Chia-Shuo Pai, Ying-Tsan Tang

引用次数: 0

Recovering particle velocity and size distributions in ejecta with photon Doppler velocimetry 用光子多普勒速度测量法复原喷出岩中的粒子速度和大小分布

IF 3.2 3区物理与天体物理

Journal of Applied Physics Pub Date : 2024-08-29 DOI: 10.1063/5.0220642

J. A. Don Jayamanne, R. Outerovitch, F. Ballanger, J. Bénier, E. Blanco, C. Chauvin, P. Hereil, J. Tailleur, O. Durand, R. Pierrat, R. Carminati, A. Hervouët, P. Gandeboeuf, J.-R. Burie

{"title":"Recovering particle velocity and size distributions in ejecta with photon Doppler velocimetry","authors":"J. A. Don Jayamanne, R. Outerovitch, F. Ballanger, J. Bénier, E. Blanco, C. Chauvin, P. Hereil, J. Tailleur, O. Durand, R. Pierrat, R. Carminati, A. Hervouët, P. Gandeboeuf, J.-R. Burie","doi":"10.1063/5.0220642","DOIUrl":"https://doi.org/10.1063/5.0220642","url":null,"abstract":"When a solid metal is struck, its free surface can eject fast and fine particles. Despite the many diagnostics that have been implemented to measure the mass, size, velocity, or temperature of ejecta, these efforts provide only a partial picture of this phenomenon. Ejecta characterization, especially in constrained geometries, is an inherently ill-posed problem. In this context, Photon Doppler Velocimetry (PDV) has been a valuable diagnostic, measuring reliably particles and free surface velocities in the single scattering regime. Here, we present ejecta experiments in gas and how, in this context, PDV allows one to retrieve additional information on the ejecta, i.e., information on the particles’ size. We explain what governs ejecta transport in gas and how it can be simulated. To account for the multiple scattering of light in these ejecta, we use the Radiative Transfer Equation (RTE) that quantitatively describes PDV spectrograms, and their dependence not only on the velocity but also on the size distribution of the ejecta. We remind how spectrograms can be simulated by solving numerically this RTE and we show how to do so on hydrodynamic ejecta simulation results. Finally, we use this complex machinery in different ejecta transport scenarios to simulate the corresponding spectrograms. Comparing these to experimental results, we iteratively constrain the ejecta description at an unprecedented level. This work demonstrates our ability to recover particle size information from what is initially a velocity diagnostic, but more importantly it shows how, using existing simulation of ejecta, we capture through simulation the complexity of experimental spectrograms.","PeriodicalId":15088,"journal":{"name":"Journal of Applied Physics","volume":"18 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204389","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

Tuning bandgap and controlling oxygen vacancy in BiFeO3 via Ba(Fe1/2Nb1/2)O3 substitution for enhanced bulk ferroelectric photovoltaic response in Al/BFO–BFN/Ag solar cell 通过 Ba(Fe1/2Nb1/2)O3 取代调谐带隙并控制 BiFeO3 中的氧空位，增强 Al/BFO-BFN/Ag 太阳能电池中的体铁电性光电响应

IF 3.2 3区物理与天体物理

Journal of Applied Physics Pub Date : 2024-08-29 DOI: 10.1063/5.0219513

L. Venkidu, N. Raja, Vasundharadevi Venkidu, B. Sundarakannan

{"title":"Tuning bandgap and controlling oxygen vacancy in BiFeO3 via Ba(Fe1/2Nb1/2)O3 substitution for enhanced bulk ferroelectric photovoltaic response in Al/BFO–BFN/Ag solar cell","authors":"L. Venkidu, N. Raja, Vasundharadevi Venkidu, B. Sundarakannan","doi":"10.1063/5.0219513","DOIUrl":"https://doi.org/10.1063/5.0219513","url":null,"abstract":"The generation of above-bandgap photovoltage, referred to as the anomalous photovoltaic effect (APV), is an extraordinary characteristic sought after property in bulk ferroelectric photovoltaic devices. Despite the fact that the relatively narrow bandgap of BiFeO3 (BFO) (2.7 eV) induces a comparatively larger generation of photocurrent than other ferroelectric photovoltaic, it falls short in producing an anomalous photovoltage (Eg ≪ Voc) and exhibits leaky ferroelectric hysteresis due to unavoidable oxygen vacancies. This work revealed a reduction in oxygen vacancies through the substitution of Ba(Fe1/2Nb1/2)O3 in BFO, leading to improved structural, morphological, synchrotron XPS, and electrical properties. This reduction in oxygen vacancies has resulted in an impressive above-bandgap photovoltage (APV) of 4.41 V for 80BFO–20BFN with greater ferroelectric polarization (Pr = 20.45 μC/cm2) observed at the co-existence of polar and non-polar phases. Moreover, both theoretical and experimental optical analyses have demonstrated a significant decrease in the bandgap to 1.92 eV, effectively extending the visible region close to 653 nm. As a result, a larger population of photoexcited charge carriers is generated, enabling the attainment of a high current density (Jsc) of 0.75 μA/cm2 under 100 mW/cm2 light irradiation.","PeriodicalId":15088,"journal":{"name":"Journal of Applied Physics","volume":"59 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204431","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

Impact of static disorder and dynamic disorder on the thermal conductivity of sodium superoxide (NaO2) 静态无序和动态无序对超氧化钠（NaO2）热导率的影响

IF 3.2 3区物理与天体物理

Journal of Applied Physics Pub Date : 2024-08-29 DOI: 10.1063/5.0219222

Hariharan Ramasubramanian, Cheng Shao, Alan J. H. McGaughey

{"title":"Impact of static disorder and dynamic disorder on the thermal conductivity of sodium superoxide (NaO2)","authors":"Hariharan Ramasubramanian, Cheng Shao, Alan J. H. McGaughey","doi":"10.1063/5.0219222","DOIUrl":"https://doi.org/10.1063/5.0219222","url":null,"abstract":"The pyrite phase of sodium superoxide, NaO2, is studied using equilibrium molecular dynamics simulations and lattice dynamics calculations to understand the impacts of static disorder and dynamic disorder on its thermal conductivity. Three structural regimes are observed based on the rotational dynamics and orientations of O2− ions. At low temperatures, where the O2− ions librate and the system is fully ordered, thermal conductivity exhibits a crystal-like temperature dependence, decreasing with increasing temperature. As temperature increases, the static disorder regime emerges, where the O2− ions transition between different orientations on a time scale larger than the librational period. In this regime, the thermal conductivity continues to decrease and then becomes temperature independent. At higher temperatures, where the O2− ions freely rotate, the system is dynamically disordered and the thermal conductivity is temperature independent, as in an amorphous solid. Using instantaneous normal mode analysis and Allen–Feldman theory, 80% of the thermal conductivity in the dynamic disorder regime is attributed to diffusons, vibrational modes that are non-propagating and non-localized. When increasing the lattice constant at a constant temperature, transitions from librations to static disorder to dynamic disorder are also observed, with the thermal conductivity decreasing monotonically. The presented methodology can be applied to other crystals with rotational degrees of freedom, offering strategies for the design of thermal conductivity switches that are responsive to external stimuli.","PeriodicalId":15088,"journal":{"name":"Journal of Applied Physics","volume":"27 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204388","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

Multipacting mitigation by atomic layer deposition: The case study of titanium nitride 通过原子层沉积缓解多重压实：氮化钛案例研究

IF 3.2 3区物理与天体物理

Journal of Applied Physics Pub Date : 2024-08-29 DOI: 10.1063/5.0221943

Y. Kalboussi, S. Dadouch, B. Delatte, F. Miserque, D. Dragoe, F. Eozenou, M. Baudrier, S. Tusseau-Nenez, Y. Zheng, L. Maurice, E. Cenni, Q. Bertrand, P. Sahuquet, E. Fayette, G. Jullien, C. Inguimbert, M. Belhaj, T. Proslier

引用次数: 0

Shock compression of single-crystal austenitic FeCr18Ni12.5 stainless steel to 60 GPa 将单晶奥氏体 FeCr18Ni12.5 不锈钢冲击压缩至 60 GPa

IF 3.2 3区物理与天体物理

Journal of Applied Physics Pub Date : 2024-08-29 DOI: 10.1063/5.0226622

Nathan P. Brown, Christopher R. Johnson, Paul E. Specht

引用次数: 0

Adjustable stereo path design method based on pin-sculpture acoustic topological insulator with Z-dislocation defect immunity 基于针状雕刻声学拓扑绝缘体的可调立体路径设计方法与 Z 位错缺陷抗扰性

IF 3.2 3区物理与天体物理

Journal of Applied Physics Pub Date : 2024-08-28 DOI: 10.1063/5.0213045

Peng Liu, Hangyu Li, Zengyao Lv, Yongmao Pei

{"title":"Adjustable stereo path design method based on pin-sculpture acoustic topological insulator with Z-dislocation defect immunity","authors":"Peng Liu, Hangyu Li, Zengyao Lv, Yongmao Pei","doi":"10.1063/5.0213045","DOIUrl":"https://doi.org/10.1063/5.0213045","url":null,"abstract":"The field of topological protected wave engineering, inspired by quantum mechanics, has generated significant interest. Acoustic analogs of electronic topological insulators provide new opportunities for manipulating sound propagation with unconventional acoustic edge modes that are immune to backscattering. Numerous reports have been published on the design of two-dimensional acoustic topological insulators (ATIs). However, the sound path of a two-dimensional design is simple, and its ability to control sound waves is limited. On the other hand, the design of 3D ATIs is relatively complex, making it difficult to manufacture and limiting its versatility. Based on the design idea of the 2D ATIs, inspired by the art named 3D pin-sculpture, an adjustable structure of a finite size consisting of spindle-shaped units with a variable cross section is designed to realize flexible path transformation. Furthermore, unlike two-dimensional structural defects, such as cavities and disorder, the analysis of vertical dislocation defects in finite-sized structures allows for the design of local sound propagation along the z-direction, providing a concept for constructing a stereo path. The designed structure also serves two functions: acoustic switch and delay. This idea offers an alternative approach to designing complex sound transmission paths.","PeriodicalId":15088,"journal":{"name":"Journal of Applied Physics","volume":"11 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204432","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