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Temperature stability of multilayer symmetric KNN-based ceramics with continuous phase transitions 连续相变多层对称knn基陶瓷的温度稳定性
IF 4 2区 物理与天体物理
Applied Physics Letters Pub Date : 2025-01-21 DOI: 10.1063/5.0247218
Bosen Li, Cheng Xiong, Xuanyang Cao, Xintao Wei, Yan Qiu, Daqiang Gao
{"title":"Temperature stability of multilayer symmetric KNN-based ceramics with continuous phase transitions","authors":"Bosen Li, Cheng Xiong, Xuanyang Cao, Xintao Wei, Yan Qiu, Daqiang Gao","doi":"10.1063/5.0247218","DOIUrl":"https://doi.org/10.1063/5.0247218","url":null,"abstract":"Temperature sensitivity of the lead-free piezoelectric ceramics based on potassium sodium niobate (KNN) has posed a significant challenge for practical applications. In this study, we developed a multi-layer symmetric KNN matrix composite ceramic in a strategy of compositional symmetry to enhance the thermal stability of its piezoelectric properties. The optimized piezoelectric properties of d33 and kp can last up to 121 and 105 °C (setting 10% performance reduction as standard), superior to its single composition sample. Importantly, the compositional symmetry effectively addresses the deformation issue during ceramic sintering. This finding of stability in KNN matrix ceramics will facilitate its industrial-scale production processes.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"32 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142991954","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
Advanced optical reinforcement materials based on three-dimensional four-way weaving structure and metasurface technology 基于三维四向编织结构和超表面技术的先进光学增强材料
IF 4 2区 物理与天体物理
Applied Physics Letters Pub Date : 2025-01-21 DOI: 10.1063/5.0232542
Wenxin Li, Shubo Cheng, Zao Yi, Huafeng Zhang, Qianju Song, Zhiqiang Hao, Tangyou Sun, Pinghui Wu, Qingdong Zeng, Rizwan Raza
{"title":"Advanced optical reinforcement materials based on three-dimensional four-way weaving structure and metasurface technology","authors":"Wenxin Li, Shubo Cheng, Zao Yi, Huafeng Zhang, Qianju Song, Zhiqiang Hao, Tangyou Sun, Pinghui Wu, Qingdong Zeng, Rizwan Raza","doi":"10.1063/5.0232542","DOIUrl":"https://doi.org/10.1063/5.0232542","url":null,"abstract":"By integrating the design principles of broadband metamaterial absorbers with woven structures, this study introduces a woven composite metamaterial (WCM) made of resin and AlCuFe quasicrystals, enabling optical materials to operate efficiently across a wide spectral range while withstanding mechanical deformation. This lightweight metamaterial features a unique 3D four-way braided structure combined with Dirac semimetals. Static analysis reveals that AlCuFe quasicrystals significantly enhance mechanical properties, with a Young's modulus reaching 38 GPa in the z direction and 18 GPa in the x and y directions at 40% fiber content and a 30° weaving angle. Frequency domain simulations show a high average absorption rate of 83.4% in the 3–12 μm range, primarily due to internal electromagnetic coupling. The study further reveals that the electromagnetic properties of the WCM are closely related to fiber content and weaving angle. As a lightweight optical material, the WCM shows strong application potential in fields such as aerospace and electromagnetic countermeasures.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"74 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142992008","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
Non-contact electroacoustic tomography with optical interferometer for electroporation therapy monitoring 用光学干涉仪进行电穿孔治疗监测的非接触式电声断层扫描
IF 4 2区 物理与天体物理
Applied Physics Letters Pub Date : 2025-01-17 DOI: 10.1063/5.0244192
Yifei Xu, Yuchen Song, Leshan Sun, Zhongping Chen, Liangzhong Xiang
{"title":"Non-contact electroacoustic tomography with optical interferometer for electroporation therapy monitoring","authors":"Yifei Xu, Yuchen Song, Leshan Sun, Zhongping Chen, Liangzhong Xiang","doi":"10.1063/5.0244192","DOIUrl":"https://doi.org/10.1063/5.0244192","url":null,"abstract":"Electroacoustic imaging is an imaging modality used to detect electric field energy distribution during electroporation, offering valuable guidance for clinical procedures, particularly in deep tissues. Traditionally, single-element piezoelectric transducers or arrays have been employed for this purpose. However, these piezoelectric sensors are sensitive to electromagnetic interference and require physical contact with the sample through a coupling medium, raising concerns for both clinical and preclinical applications. To overcome these limitations, a multi-channel random quadrature ultrasonics system has been developed, enabling non-contact detection of electroacoustic signals. In this study, we demonstrated that this non-contact technique effectively detects electroacoustic signals, identifies electroporation regions, and reconstructs electric energy distribution, offering a promising approach for monitoring electroporation therapy.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"23 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142988360","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
Kinetic inductance and non-linearity of MgB2 films at 4K 4K时MgB2薄膜的动电感和非线性
IF 4 2区 物理与天体物理
Applied Physics Letters Pub Date : 2025-01-16 DOI: 10.1063/5.0245866
J. Greenfield, C. Bell, F. Faramarzi, C. Kim, R. Basu Thakur, A. Wandui, C. Frez, P. Mauskopf, D. Cunnane
{"title":"Kinetic inductance and non-linearity of MgB2 films at 4K","authors":"J. Greenfield, C. Bell, F. Faramarzi, C. Kim, R. Basu Thakur, A. Wandui, C. Frez, P. Mauskopf, D. Cunnane","doi":"10.1063/5.0245866","DOIUrl":"https://doi.org/10.1063/5.0245866","url":null,"abstract":"We report on the fabrication and characterization of superconducting magnesium diboride (MgB2) thin films intended for quantum-limited devices based on non-linear kinetic inductance (NLKI) such as parametric amplifiers with either elevated operating temperatures or expanded frequency ranges. In order to characterize the MgB2 material properties, we have fabricated coplanar waveguide (CPW) transmission lines and microwave resonators using ≈40 nm thick MgB2 films with a measured kinetic inductance of ∼5.5 pH/□ and internal quality factors Qi≈3×104 at 4.2 K. We measure the NLKI in MgB2 by applying a DC bias to a 6 cm long by 4 μm wide CPW transmission line and measuring the resulting phase delay caused by the current dependent NLKI. We also measure the current dependent NLKI through CPW resonators that shift down in frequency with increased power applied through the CPW feedline. Using these measurements, we calculate the characteristic non-linear current parameter, I*, for multiple CPW geometries. We find values for corresponding current density, J*=12–22 MA/cm2, and a ratio of the critical current to the non-linear current parameter, IC/I*=0.14–0.26, similar to or higher than values for other superconductors such as NbTiN and TiN.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"27 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142985981","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
Strain manipulation of spin-polarized topological phase in WSe2/CrI3 heterostructure WSe2/CrI3异质结构中自旋极化拓扑相的应变操纵
IF 4 2区 物理与天体物理
Applied Physics Letters Pub Date : 2025-01-16 DOI: 10.1063/5.0246961
Jiali Yang, Fangyang Zhan, Xiaoliang Xiao, Zhikang Jiang, Xin Jin, Rui Wang
{"title":"Strain manipulation of spin-polarized topological phase in WSe2/CrI3 heterostructure","authors":"Jiali Yang, Fangyang Zhan, Xiaoliang Xiao, Zhikang Jiang, Xin Jin, Rui Wang","doi":"10.1063/5.0246961","DOIUrl":"https://doi.org/10.1063/5.0246961","url":null,"abstract":"Here, based on first-principles calculations and topological analysis, we show that the spin-polarized topological phase is present in a van der Waals (vdW) heterostructure WSe2/CrI3. We reveal that magnetism induced by proximity effects in the heterostructure breaks the time-reversal symmetry (TRS) and thus induces gapped topological edge states, exhibiting the TRS-breaking quantum spin Hall (QSH) effect. By applying a stress field, the WSe2/CrI3 heterostructure manifests enhanced spin polarization, Rashba splitting, and tunable bandgap. The TRS-breaking QSH effect observed in the WSe2/CrI3 heterostructure exhibits remarkable robustness against interlayer shearing. The distinct anisotropy associated with in-plane strain provides precise manipulation strategies for bandgap engineering. Notably, in-plane tensile strain can significantly increase the nontrivial bandgap by up to 98 meV, suggesting the magnetic WSe2/CrI3 heterostructure represents an outstanding platform for achieving the TRS-breaking QSH effect at room temperature. Our findings provide a theoretical foundation for the development of low-dissipation spintronic nanodevices.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"8 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142986005","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
Enhanced perovskite crystallinity via short-term ultraviolet irradiation 短期紫外线照射增强钙钛矿结晶度
IF 4 2区 物理与天体物理
Applied Physics Letters Pub Date : 2025-01-16 DOI: 10.1063/5.0233262
Tian Xu, Qianliu Yin, Yanbin Chen, Yutian Liu, Jiuchuan Wang, Meifeng Xu
{"title":"Enhanced perovskite crystallinity via short-term ultraviolet irradiation","authors":"Tian Xu, Qianliu Yin, Yanbin Chen, Yutian Liu, Jiuchuan Wang, Meifeng Xu","doi":"10.1063/5.0233262","DOIUrl":"https://doi.org/10.1063/5.0233262","url":null,"abstract":"Despite the recent rapid development in the organic–inorganic halide perovskite solar cells (PSCs), the crystalline stability of the perovskite (PVK) material, particularly of the MAPbI3, remains a significant impediment to PSC applications. We proposed that short-term ultraviolet (UV) irradiation under air conditions can stabilize the PVK phase and increases the film crystallinity. Detailed investigations indicated that the electrons can be released from the bridging hydroxyls (OHB) bonds under UV irradiation to generate a small amount of active oxygen (O2−) on the TiO2 film surface, forming stable Pb–O bonds and α phase PVK. A 25% increases in photovoltaic conversion efficiency with a considerable stability, and the device maintains over 90% efficiency after 400 h of storage in N2. This study provides a simple and effective method to produce efficient and stable PSC devices at low cost.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"83 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142987807","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
Lowering the skyrmion depinning current in synthetic antiferromagnetic systems 降低合成反铁磁体系中离子脱落电流
IF 4 2区 物理与天体物理
Applied Physics Letters Pub Date : 2025-01-16 DOI: 10.1063/5.0242419
Yancheng Wang, Xin Xie, Haobing Zhang, Xintao Fan, Weiwei Wang
{"title":"Lowering the skyrmion depinning current in synthetic antiferromagnetic systems","authors":"Yancheng Wang, Xin Xie, Haobing Zhang, Xintao Fan, Weiwei Wang","doi":"10.1063/5.0242419","DOIUrl":"https://doi.org/10.1063/5.0242419","url":null,"abstract":"Magnetic skyrmions, as topological spin textures, offer great potential for next-generation spintronic applications. Skyrmions in artificially synthesized antiferromagnets (SAFs) are particularly promising due to their ability to suppress the skyrmion Hall effect and achieve faster dynamics, making them highly attractive for spintronic devices. However, the critical current density required to drive SAF skyrmions using spin-transfer torque is significantly higher than in conventional ferromagnetic systems. In this work, we analytically and numerically demonstrate that the critical current density for SAF skyrmions can be significantly reduced by applying distinct currents to different layers within the system. This approach can be applied to periodically pinned skyrmions in SAFs, offering the dual benefits of a suppressed Hall effect and a reduced critical current density. Our findings pave the way for more efficient manipulation of SAF skyrmions in spintronic device architectures.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"55 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142987808","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
Numerical modeling of ultrasound propagation in the inner ear for sonoporation-mediated drug delivery 超声在内耳传播的数值模拟超声介导给药
IF 4 2区 物理与天体物理
Applied Physics Letters Pub Date : 2025-01-16 DOI: 10.1063/5.0239956
Fabrice Micaletti, David Bakhos, Jean-Michel Escoffre, Dapeng Li, Ayache Bouakaz, Damien Fouan
{"title":"Numerical modeling of ultrasound propagation in the inner ear for sonoporation-mediated drug delivery","authors":"Fabrice Micaletti, David Bakhos, Jean-Michel Escoffre, Dapeng Li, Ayache Bouakaz, Damien Fouan","doi":"10.1063/5.0239956","DOIUrl":"https://doi.org/10.1063/5.0239956","url":null,"abstract":"To date, no treatment has been developed for targeted delivery to the inner ear (IE). Sonoporation, a promising drug delivery method, increases the permeability of round window membranes (RWMs), enhancing drug diffusion to the IE. A dedicated ultrasound protocol is essential to treat IE pathologies in combination with sonoporation. In situ acoustic pressure (AP) measurements cannot be used for RWM sonoporation because of the heterogeneous anatomy of the temporal bone. This study aimed to model ultrasound propagation in the IE to ensure adequate AP for RWM sonoporation. The impact of the position of the ultrasound probe relative to the RWM on AP as well as potential temperature increases caused by tissue/ultrasound interaction were investigated. Using MATLAB®, a surgical procedure was simulated based on the computed tomography scans of sheep heads (14 IEs). An ultrasound probe (12.7 mm in diameter, 1 MHz) with a degassed water-filled adapter was placed in front of the RWM. Mechanical properties, such as tissue density, sound speed, and ultrasound attenuation, were computed. Ultrasound propagation was simulated using k-wave. Standing waves can double the AP locally; however, the final AP is comparable to a free water field map when accounting for microbubble-induced attenuation. The angle and distance of the probe relative to the RWM have minimal effect on the AP; the main effect is caused by centering the probe on the RWM. No significant thermal elevation was observed. The developed computational model paves the way for designing an optimal and safe ultrasound protocol for sonoporation-mediated drug delivery into the IE.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"37 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142987806","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
First-principles study on electronic and optical properties of perovskite light-emitting diodes CsPb(Br1− xIx)3 钙钛矿发光二极管CsPb(Br1−xIx)3电子和光学性质的第一性原理研究
IF 4 2区 物理与天体物理
Applied Physics Letters Pub Date : 2025-01-15 DOI: 10.1063/5.0250664
Peng Xiong, Jin-Bo Liao, Zhong-Yuan Wang, Qian-He Zuo, Yu Dai, Jian Wu, Chuan-Jia Tong
{"title":"First-principles study on electronic and optical properties of perovskite light-emitting diodes CsPb(Br1− xIx)3","authors":"Peng Xiong, Jin-Bo Liao, Zhong-Yuan Wang, Qian-He Zuo, Yu Dai, Jian Wu, Chuan-Jia Tong","doi":"10.1063/5.0250664","DOIUrl":"https://doi.org/10.1063/5.0250664","url":null,"abstract":"CsPb(Br1−xIx)3, a mixed-halide all-inorganic perovskite, is a promising light-emitting diode (LED) material due to its impressive performance. It has been demonstrated that the mixing parameter x of halogen composition significantly influences the luminescence efficiency of CsPb(Br1−xIx)3. However, the underlying microscopic mechanisms remain unclear. Using first-principles calculations, we investigate the effects of anion mixing on the radiative and non-radiative recombination properties of perovskite materials. Simulations on the carrier mobility, exciton binding energy, affinity energy, and defect formation energy of the materials in the CsPb(Br1−xIx)3 system collaboratively revealed that a high ratio off Br is associated with enhanced luminescence efficiency. Specifically, CsPb(Br1−xIx)3 exhibits optimal luminescent performance with a 2:1 bromine-to-iodine ratio, while it shows the performance degradation with a 1:1 ratio. The results demonstrate that the ratio of halogen atoms (Br and I) has a significant influence on the LED properties of cesium-based all-inorganic perovskites CsPb(Br1−xIx)3, providing a valuable guide for the experimental preparation of cesium-based all-inorganic perovskites.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"77 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142986028","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
High-temperature performance of metal/n-Ga2O3/p-diamond heterojunction diode fabricated by ALD method ALD法制备金属/n-Ga2O3/p-金刚石异质结二极管的高温性能
IF 4 2区 物理与天体物理
Applied Physics Letters Pub Date : 2025-01-15 DOI: 10.1063/5.0238924
Dan Zhao, Zhangcheng Liu, Wenqian Wang, Zhiwei Chen, Qin Lu, Xiao Wang, Yang Li, Jinping Ao
{"title":"High-temperature performance of metal/n-Ga2O3/p-diamond heterojunction diode fabricated by ALD method","authors":"Dan Zhao, Zhangcheng Liu, Wenqian Wang, Zhiwei Chen, Qin Lu, Xiao Wang, Yang Li, Jinping Ao","doi":"10.1063/5.0238924","DOIUrl":"https://doi.org/10.1063/5.0238924","url":null,"abstract":"A metal/n-Ga2O3/p-diamond heterojunction diode with superior high-temperature performance was demonstrated in this work. The p-type diamond was lightly boron doped, and the Ga2O3 film was grown via atomic layer deposition without intentional doping. The forward current density increased with temperature, while the reverse current decreased at elevated temperatures. This behavior was attributed to the distinct carrier ionization dynamics across varying temperature ranges. Under high reverse voltage stress, the reverse current remained relatively stable, with no breakdown occurring up to 498 K. An avalanche breakdown voltage of 186 V at 498 K indicates the diode's robust high-voltage endurance capability. These findings underscore the potential of the metal/n-Ga2O3/p-diamond heterojunction diode for high-temperature and high-voltage applications.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"28 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142981195","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
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