Applied Physics Letters最新文献_第7页

Plasma etching enabling the fast reconstruction of pre-catalysts into defective metal oxyhydroxides with high spin state and activated lattice oxygen for efficient oxygen evolution 等离子体刻蚀使预催化剂能够快速重建成具有高自旋态和活化晶格氧的缺陷金属氢氧化物，从而实现高效的析氧

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2025-09-30 DOI: 10.1063/5.0292829

Jing Xie, Jingyi Shi, Ying Xu, Shoujie Liu, Luchun Qiu, Li Yang, Ping Yan, Xin-Yao Yu

{"title":"Plasma etching enabling the fast reconstruction of pre-catalysts into defective metal oxyhydroxides with high spin state and activated lattice oxygen for efficient oxygen evolution","authors":"Jing Xie, Jingyi Shi, Ying Xu, Shoujie Liu, Luchun Qiu, Li Yang, Ping Yan, Xin-Yao Yu","doi":"10.1063/5.0292829","DOIUrl":"https://doi.org/10.1063/5.0292829","url":null,"abstract":"Transition metal-based catalytic materials are promising pre-catalysts for oxygen evolution reaction (OER), during which the in situ reconstructed metal oxyhydroxides are real active sites. However, a majority of documented pre-catalysts exhibit sluggish reconstruction dynamics, leading to in-complete reconstruction and consequently poor OER activity. Herein, exemplified by Hoffman-type coordination polymer (NiFe-Ni PBA), plasma etching is employed to create cation-anion dual vacancies (Niv and CNv) to promote the rapid and deep reconstruction of NiFe-Ni PBA into defective NiOOH/FeOOH (P-NiOOH/FeOOH) during the activation process. Langmuir probe diagnostics and structural characterizations of NiFe-Ni PBA before and after plasma etching evidence that Niv and CNv are predominantly generated by the bombardment of high-energy ions, whereas elemental nickel will be produced when electron energy exceeds a critical threshold. Density functional theory (DFT) calculations, in situ Raman spectra, and Laviron analysis reveal that the abundant vacancies in plasma-etched NiFe-Ni PBA effectively lower the reconstruction reaction barrier and promote the accumulation of OH− ions during the reconstruction process, enabling faster reconstruction kinetics. As expected, the P-NiOOH/FeOOH exhibits enhanced OER activity with a low overpotential of 220 mV at 10 mA cm−2 and a small Tafel slope of 29.82 mV dec−1 in 1 M KOH. Magnetic test, differential electrochemical mass spectrometry measurement, and DFT calculations illustrate that the improved OER activity can be attributed to the high spin state, optimized d-band center of metal ions, rich oxygen vacancies, and more activated lattice oxygen in P-NiOOH/FeOOH. Moreover, the P-NiOOH/FeOOH also displays splendid catalytic stability up to 850 h.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"75 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145194991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

In situ construction of CuInSe2–In2Se3 heterojunctions for highly selective self-powered NO2 sensors 高选择性自供电NO2传感器中CuInSe2-In2Se3异质结的原位构建

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2025-09-30 DOI: 10.1063/5.0289490

Hao Jiang, Shilei Fan, Xiao Chang, Xianghong Liu, Wei Zheng, Jun Zhang

引用次数: 0

Polarization-enhanced conductivity in enhancement-mode GaN p-FET 增强模式GaN p-FET的极化增强电导率

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2025-09-30 DOI: 10.1063/5.0281588

Hengyuan Qi, Teng Li, Jingjing Yu, Jialin Duan, Jiawei Cui, Sihang Liu, Junjie Yang, Yingming Song, Han Yang, Zhijian Yang, Xuelin Yang, Maojun Wang, Shiwei Feng, Bo Shen, Meng Zhang, Jin Wei

引用次数: 0

Development of a high-efficient and uniform microwave-induced atmospheric pressure linear plasma jet source based on a square coaxial structure 基于方形同轴结构的高效均匀微波诱导大气压力线性等离子体射流源的研制

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2025-09-30 DOI: 10.1063/5.0288621

Li Wu, Yan Chen, Ao Qu, Nana Zhang, Daming Fan, Junwu Tao, Fei Cheng

引用次数: 0

Spin-wave-driven skyrmion manipulation via engineered potential well lines 通过工程电位井线的自旋波驱动的skyrmion操纵

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2025-09-30 DOI: 10.1063/5.0284205

Xiao-Ping Ma, Qi-Shuo Wang, Kangjie Tian, Xiao-Xue Yang, Hongyan Zhang, Zhaochu Luo, Hong-Guang Piao

{"title":"Spin-wave-driven skyrmion manipulation via engineered potential well lines","authors":"Xiao-Ping Ma, Qi-Shuo Wang, Kangjie Tian, Xiao-Xue Yang, Hongyan Zhang, Zhaochu Luo, Hong-Guang Piao","doi":"10.1063/5.0284205","DOIUrl":"https://doi.org/10.1063/5.0284205","url":null,"abstract":"Magnetic skyrmions, as topologically protected spin textures, have emerged as promising candidates for information carriers in next-generation spintronic devices, owing to their nanoscale size, stability, and low driving-current requirements. However, their practical implementation faces significant challenges, including uncontrolled skyrmion motion, random generation, and weak readout signals, which hinder reliable device operation. The recently demonstrated capability to craft potential well lines by modulating local material parameters, such as magnetocrystalline anisotropy and exchange stiffness constant, provides solutions to these challenges. In this work, we proposed an approach to achieve precise skyrmion navigation along predefined trajectories using spin-wave excitation. The proposed method addresses the fundamental limitation in skyrmion propulsion driven by spin waves (SWs), where SW dissipation prevents sustained motion along the wave propagation direction over extended distances. Furthermore, our strategy enhances the readout signal amplitude, addressing a critical issue in skyrmion detection.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"75 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145195032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Actively tunable infrared emissivity regulator based on electrochemical lithium intercalation in three-dimensional graphene foam 基于电化学锂嵌入三维石墨烯泡沫的主动可调谐红外发射率调节器

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2025-09-30 DOI: 10.1063/5.0291958

Zixuan Wang, Yijie Li, Yanyan Song, Yubing Liu, Ganying Zeng

引用次数: 0

Rethinking redox electrolyte design: Why diffusion layer ion exchange matters more than surface area 重新思考氧化还原电解质设计：为什么扩散层离子交换比表面积更重要

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2025-09-30 DOI: 10.1063/5.0293346

Yuhu Wang, Zhenheng Sun, Tianyu Yang, Jiecai Fu

{"title":"Rethinking redox electrolyte design: Why diffusion layer ion exchange matters more than surface area","authors":"Yuhu Wang, Zhenheng Sun, Tianyu Yang, Jiecai Fu","doi":"10.1063/5.0293346","DOIUrl":"https://doi.org/10.1063/5.0293346","url":null,"abstract":"Redox electrolyte-enhanced aqueous energy storage devices (RE-AESDs) offer a promising route to surpass the energy density of traditional supercapacitors, but their performance is often plagued by parasitic transport phenomena that lead to low efficiency. Conventional design paradigms that focus on maximizing electrode specific surface area (SSA)—a strategy inherited from supercapacitors—are physically insufficient if device operation is governed by diffusion kinetics. Here, we introduce and validate a quantitative physical diagnostic for the parasitic diffusive flux that undermines efficiency in these systems. By investigating the archetypal [Fe(CN)6]4−/[Fe(CN)6]3− system with carbon electrodes of vastly different SSAs (&gt;1400-fold variation), we demonstrate that charge capacity is fundamentally decoupled from electrode geometry. Instead, performance is dictated by transport physics within the Nernst diffusion layer. Using multi-potential step measurements, we isolate a non-zero termination current (it) as a direct, quantitative measure of the parasitic flux, a key physical parameter previously discussed only qualitatively. This transport-centric model is further substantiated by power-law analysis of voltammetry data, which confirms diffusion-dominated kinetics (b ≈ 0.5). Finally, we link this quantified parasitic flux to long-term cycling degradation. These findings compel a paradigm shift in the RE-AESD design, from optimizing surface geometry to controlling the fundamental physics of ion transport and mitigating the parasitic fluxes quantified by our diagnostic method.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"100 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145194992","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Switchable topological property of magneto-optical photonic crystal waveguide by adjusting magnetic field strength 调节磁场强度的磁光光子晶体波导的可切换拓扑特性

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2025-09-30 DOI: 10.1063/5.0289520

Yuhao Huang, Yidong Zheng, Zhi-Yuan Li, Wenyao Liang

{"title":"Switchable topological property of magneto-optical photonic crystal waveguide by adjusting magnetic field strength","authors":"Yuhao Huang, Yidong Zheng, Zhi-Yuan Li, Wenyao Liang","doi":"10.1063/5.0289520","DOIUrl":"https://doi.org/10.1063/5.0289520","url":null,"abstract":"We theoretically and experimentally demonstrate a special phenomenon in magneto-optical photonic crystals (MOPCs), wherein the gap Chern number of a high-frequency bandgap varies with the strength of an external magnetic field. Specifically, when the magnetic field strength exceeds a critical threshold, the gap Chern number of the third bandgap undergoes a transition from a non-zero value to zero, indicating a topological phase transition in the system. This finding provides an alternative approach to alter the topological properties of a photonic bandgap without modifying the geometric structure. Based on this effect, we construct a waveguide structure composed of a square MOPC with metallic boundaries. By simply adjusting the magnetic field strength, one can realize the dynamic switching between a dual-mode (odd and even states) topological waveguide and a trivial waveguide within a specific frequency range. Microwave experiments further verify the occurrence of such topological transitions. This study expands current strategies for controlling light transport in MOPCs and establishes a practical platform for developing topological photonic devices with multiple tunable degrees of freedom.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"1 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145195008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Post-fabrication tuning of circular Bragg grating resonators via atomic layer deposition 通过原子层沉积的圆形布拉格光栅谐振器的后期调谐

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2025-09-30 DOI: 10.1063/5.0287371

Jochen Kaupp, Yorick Reum, Giora Peniakov, Monika Emmerling, Sabrina Estevam, Martin Kamp, Tobias Huber-Loyola, Sven Höfling, Andreas Theo Pfenning

{"title":"Post-fabrication tuning of circular Bragg grating resonators via atomic layer deposition","authors":"Jochen Kaupp, Yorick Reum, Giora Peniakov, Monika Emmerling, Sabrina Estevam, Martin Kamp, Tobias Huber-Loyola, Sven Höfling, Andreas Theo Pfenning","doi":"10.1063/5.0287371","DOIUrl":"https://doi.org/10.1063/5.0287371","url":null,"abstract":"Circular Bragg grating resonators have gained a lot of attention in various material platforms due to their high Purcell factors over large bandwidth. Although the bandwidth is on the order of several nanometers, the best performance is given when perfectly matching the resonator's frequency with the frequency of the embedded emitter. The device resonance spectrum depends on many parameters, such that fabrication often renders devices with detuning to the intended frequency. Here, we show a method to tune the resonator mode in post-fabrication via atomic layer deposition. Atomic layer deposition of a dielectric layer (Al2O3) is used to red-shift the optical resonance. While the presented technique is universal for circular Bragg grating resonators within a wide class of material systems, we choose the quaternary semiconductor In0.53Al0.23Ga0.24As and incorporate InAs quantum dots as active material to validate the technique. We show a tuning of the resonator mode of up to (11.3±0.1) nm with (36±1) nm of Al2O3 at about 1460 nm emission wavelength, which is more than half of the experimental linewidth of the mode itself.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"3 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145195012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Robust measurement of distorted partially coherent vortex beams 畸变部分相干涡旋光束的鲁棒测量

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2025-09-30 DOI: 10.1063/5.0287349

Junan Zhu, Zhiquan Hu, Zhuoyi Wang, Yiyi Hang, Hao Zhang, Xingyuan Lu, Qiwen Zhan, Yangjian Cai, Chengliang Zhao

{"title":"Robust measurement of distorted partially coherent vortex beams","authors":"Junan Zhu, Zhiquan Hu, Zhuoyi Wang, Yiyi Hang, Hao Zhang, Xingyuan Lu, Qiwen Zhan, Yangjian Cai, Chengliang Zhao","doi":"10.1063/5.0287349","DOIUrl":"https://doi.org/10.1063/5.0287349","url":null,"abstract":"Vortex beams, characterized by their orbital angular momentum proportional to the topological charge, offer significant potential in optical communication. However, turbulence-induced beam distortion and wandering lead to mode crosstalk and hinder accurate topological charge measurement, resulting in the degradation of transmitted information. While coherence modulation has shown potential in enhancing beam stability under dynamic turbulence, robust measurement of the topological charge remains a significant challenge. To address this, we proposed a robust measurement method that integrates learning-based turbulence compensation with self-reference holography for topological charge measurement of partially coherent vortex beams. Both simulation and experimental results confirm that the proposed compensation neural network effectively corrects distorted beams, thereby enabling stable topological charge measurement over extended periods. Moreover, the proposed framework demonstrates strong generalization capabilities, accurately measuring topological charges for coherence widths beyond those in the training dataset. This work provides a promising solution for non-ideal free-space optical communication systems utilizing vortex beams.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"5 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145195033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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