Applied Physics Letters最新文献_第3页

Experimental evidence of strong intrinsic defect-induced phonon scattering in 2D non-layered β-In2S3 二维非层状β-In2S3中强本征缺陷诱导声子散射的实验证据

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2026-04-14 DOI: 10.1063/5.0319889

Ziqi Lin, Jialin Lu, Yicun Chen, Chun Du, Tianshu Lai, Ke Chen

引用次数: 0

Electron drift velocity measurement of AlGaN/GaN single- and multi-channel Fin structures AlGaN/GaN单通道和多通道翅片结构的电子漂移速度测量

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2026-04-14 DOI: 10.1063/5.0314039

Qingru Wang, Quan Dai, Xinkun Zhang, Yu Zhou, Xiaoning Zhan, Qian Li, Jianxun Liu, Jiaanli Wang, Cheng Li, Qian Sun, Meixin Feng, Hui Yang

引用次数: 0

UV ozone oxidized high- k TaO x dielectric with van der Waals interface for two-dimensional electronic devices 二维电子器件用紫外臭氧氧化具有范德华界面的高k陶x电介质

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2026-04-14 DOI: 10.1063/5.0321761

Tong Tong, Yuan Gao, Yinfeng Long, Kan Liao, Han Chen, Long Lin, Xiang Lan, Linghai Zhang, Lin Wang, Yucheng Jiang, Weisheng Li

{"title":"UV ozone oxidized high- k TaO x dielectric with van der Waals interface for two-dimensional electronic devices","authors":"Tong Tong, Yuan Gao, Yinfeng Long, Kan Liao, Han Chen, Long Lin, Xiang Lan, Linghai Zhang, Lin Wang, Yucheng Jiang, Weisheng Li","doi":"10.1063/5.0321761","DOIUrl":"https://doi.org/10.1063/5.0321761","url":null,"abstract":"Two-dimensional (2D) semiconductors are promising channel materials for next-generation field-effect transistors (FETs) due to their superior gate control capabilities, dangling-bond-free surfaces, and high mobility. However, it remains challenging to integrate ultrathin and uniform high-k dielectrics on 2D semiconductors to fabricate FETs with large gate capacitance and clean interfaces. Here, we report a high-k dielectric TaOx prepared via UV ozone oxidation of layered tantalum disulfide (TaS2), with a high effective dielectric constant (εr) of ∼28 and a breakdown field of ∼8 MV/cm. We integrated the TaOx dielectric with 2D semiconductors through van der Waals assembly, exhibiting small hysteresis (&lt;10 mV), a high current on/off ratio approaching 107, a steep subthreshold swing of 64 mV/dec, and a low interface trap density Dit of ∼6.8 × 1011 cm−2 eV−1. By integrating n-type MoS2 and p-type WSe2 transistors with van der Waals dielectric TaOx, we have realized logic circuits with low static power consumption capable of performing NOT, NAND, and NOR operations. Notably, the logic inverter (NOT gate) exhibits a static voltage gain as high as 260. Our dielectric fabrication strategy can be used to integrate 2D materials and amorphous oxide dielectrics, thus offering a promising approach for the development of high-performance low-power electronics.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"68 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147681566","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

Foaming-induced structural engineering of graphite arrays for high-density thermal pathways in thermal interface materials 热界面材料高密度热通道石墨阵列的泡沫诱导结构工程

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2026-04-14 DOI: 10.1063/5.0314455

Zhijun Guo, Yuanyuan Zhang, Jianbin Mai, Qingming Long, Wenlong Zhang, Wei Chen, Feiyu Kang, Hongda Du

{"title":"Foaming-induced structural engineering of graphite arrays for high-density thermal pathways in thermal interface materials","authors":"Zhijun Guo, Yuanyuan Zhang, Jianbin Mai, Qingming Long, Wenlong Zhang, Wei Chen, Feiyu Kang, Hongda Du","doi":"10.1063/5.0314455","DOIUrl":"https://doi.org/10.1063/5.0314455","url":null,"abstract":"The escalating power density of electronics demands advanced thermal interface materials (TIMs). While graphite array-based TIMs (GRTs) have attracted considerable interest, achieving their theoretically high performance requires precise microstructural control. Structural models indicate that reducing the thickness of graphite lamellae increases the density of effective thermal pathways, which is key to enhancing GRT performance. Herein, we develop a hydrazine monohydrate-assisted foaming strategy that enables microstructural engineering of graphene oxide paper. Through systematic modulation of the hydrazine monohydrate concentration, precise control over the lamellae thickness in the derived graphite papers was achieved, which directly governs the thermal pathway density in the final GRT architecture. This structural advantage yields higher-density thermal pathways in vertical arrays, enabling the optimal GRT to achieve an ultra-low total thermal resistance of 5.7 × 10−6 m2 K W−1 and high through-plane thermal conductivity of 130.6 W m−1 K−1. This study establishes a fundamental structure–property relationship in GRTs, revealing that thermal performance is critically dependent on the architectural design of the conductive network at the micro/nanoscale. The proposed strategy offers a promising and scalable route for manufacturing advanced thermal management solutions to meet the escalating cooling demands of next-generation high-power electronics.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"38 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147681624","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

Stabilizing direct laser acceleration with long-scale-length plasma targets 长尺度等离子体靶稳定直接激光加速度

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2026-04-14 DOI: 10.1063/5.0320133

Tamir Cohen, Talia Meir, Itamar Cohen, Assaf Levanon, Filip Grepl, Maksym Tryus, Valeria Istokskaia, Francesco Schillaci, Lorenzo Giuffrida, Moshe Fraenkel, Ishay Pomerantz

引用次数: 0

Elasticity assessment of intestinal tissues using endoscopic optical coherence elastography 利用内镜光学相干弹性成像评估肠道组织的弹性

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2026-04-13 DOI: 10.1063/5.0324600

Huiyi Fang, Xiaochen Meng, Chongyang Wang, Fan Fan, Zongqing Ma, Jiang Zhu

{"title":"Elasticity assessment of intestinal tissues using endoscopic optical coherence elastography","authors":"Huiyi Fang, Xiaochen Meng, Chongyang Wang, Fan Fan, Zongqing Ma, Jiang Zhu","doi":"10.1063/5.0324600","DOIUrl":"https://doi.org/10.1063/5.0324600","url":null,"abstract":"Strain-based optical coherence elastography (OCE) is a functional imaging modality derived from optical coherence tomography (OCT), which evaluates biomechanical properties by measuring tissue strain. However, conventional Doppler phase-based strain estimation is highly susceptible to phase wrapping, particularly under conditions of unstable scanning speed, which is often exacerbated by non-uniform rotational distortion (NURD) in proximally driven endoscopic probes. To overcome these limitations, we propose a distal rotary scanning endoscopic OCE system integrated with a balloon catheter. By combining balloon inflation-induced excitation with circumferential scanning, the system enables stable and uniform elastography imaging of intestinal tissue while mitigating NURD-related artifacts. Displacement fields are estimated by calculating inter-frame phase differences of OCT images, based on which radial strain maps are reconstructed, thereby simplifying the phase-unwrapping process. Experiments conducted on tissue-mimicking phantoms and ex vivo porcine intestines confirm the feasibility of the proposed method. The results indicate that the system can simultaneously capture high-resolution structural images and radial strain information from localized intestinal tissues, demonstrating significant potential for clinical applications in the early diagnosis and therapeutic monitoring of intestinal diseases.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"132 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147681674","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

Generation of tripartite entanglement among optical modes in a single multimode nanobeam 单模纳米光束中光学模式间三方纠缠的产生

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2026-04-13 DOI: 10.1063/5.0315067

Tijjani Abdulrazak, Qizhi Cai, Boyu Fan, Guangwei Deng

引用次数: 0

High energy storage in tetragonal tungsten bronze ceramics engineered via superparaelectric state 利用超超电态技术在四方钨青铜陶瓷中实现高能量存储

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2026-04-13 DOI: 10.1063/5.0317235

Ruirui Kang, Zepeng Wang, Yangfei Gao, Weizhi Yuan, Jinyou Shao, Xiaojie Lou

{"title":"High energy storage in tetragonal tungsten bronze ceramics engineered via superparaelectric state","authors":"Ruirui Kang, Zepeng Wang, Yangfei Gao, Weizhi Yuan, Jinyou Shao, Xiaojie Lou","doi":"10.1063/5.0317235","DOIUrl":"https://doi.org/10.1063/5.0317235","url":null,"abstract":"Dielectric energy storage ceramics are critical components in advanced pulsed-power systems. Recently, ceramics with tetragonal tungsten bronze (TTB) structure have gained considerable interest owing to their freedom from volatile elements, which is a distinct advantage over many other widely studied energy storage ceramics. Nevertheless, achieving a simpler composition while maintaining a well-balanced enhancement in energy storage performance remains challenging. In this work, single La3+ ion was introduced into Sr0.6Ba0.4Nb2O6 ceramics, which induces a superparaelectric state at room temperature and effectively lowers the energy barrier for polarization switching. As a result, the obtained ceramic with a simple composition exhibits a high recoverable energy density of 3.48 J/cm3 and an ultrahigh efficiency of 95.4%, along with a notable figure of merit of 75.7. Moreover, the optimized composition demonstrates excellent frequency stability (1–200 Hz) and temperature stability (25–150 °C). This work proposes a feasible strategy for designing high-performance TTB energy storage ceramics, demonstrating the great potential of TTB ceramics in advanced energy storage applications.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"12 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147681678","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

A molecular selenium iodide cathode and hybrid electrolyte for solid-state Na–Se2I2 batteries 一种用于固态Na-Se2I2电池的分子碘化硒阴极和混合电解质

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2026-04-13 DOI: 10.1063/5.0325124

Shufeng Song, Hongyang Shan, Wei Xue, Zhixu Long, Chengtao Xiang, Weihua Liang, Chaohe Xu, Guangsheng Huang

{"title":"A molecular selenium iodide cathode and hybrid electrolyte for solid-state Na–Se2I2 batteries","authors":"Shufeng Song, Hongyang Shan, Wei Xue, Zhixu Long, Chengtao Xiang, Weihua Liang, Chaohe Xu, Guangsheng Huang","doi":"10.1063/5.0325124","DOIUrl":"https://doi.org/10.1063/5.0325124","url":null,"abstract":"Challenges such as polyselenide shuttling and poor reaction kinetics persist in sodium–selenium (Na–Se) batteries. While solid-state Na–Se batteries could potentially eliminate the shuttle effect, they have received limited attention due to poor solid–solid interfacial contact and intrinsically sluggish conversion kinetics. Herein, we report a solid-state Na–Se2I2 battery that employs a low-melting point Se2I2 molecular cathode and a tailored hybrid solid electrolyte. At an operating temperature above its melting point, liquid Se2I2 establishes favorable liquid–liquid interfaces and enables a facile liquid–solid conversion pathway. Furthermore, the sodium super ion conductor (NASICON)/poly(ethylene oxide) hybrid electrolyte simultaneously dissolves polyselenides to promote redox kinetics and physically blocks their shuttling to ensure cycling stability. As a result, a reversible six-electron conversion reaction is achieved, and the solid-state Na–Se2I2 battery delivers a high specific capacity of 336 mAh g−1 at 0.1 C and a stable cycling over 200 cycles with 88.2% capacity retention at 0.5 C. The electrochemically active Se2I2 molecular design opens an alternative chemistry for selenium-based electrodes and provides a promising direction for future solid-state battery research.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"196 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147681682","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

Continuous topological charge manipulation with radially varying polarizations 具有径向变化极化的连续拓扑电荷操纵

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2026-04-13 DOI: 10.1063/5.0331927

Xiang Zhang, Xuanguang Wu, Xuanyu Wu, Yuan Zhang, Bingyan Wei, Sheng Liu, Yi Zhang, Peng Li, Jianlin Zhao

{"title":"Continuous topological charge manipulation with radially varying polarizations","authors":"Xiang Zhang, Xuanguang Wu, Xuanyu Wu, Yuan Zhang, Bingyan Wei, Sheng Liu, Yi Zhang, Peng Li, Jianlin Zhao","doi":"10.1063/5.0331927","DOIUrl":"https://doi.org/10.1063/5.0331927","url":null,"abstract":"Topological charge (m), a fundamental quantity characterizing optical orbital angular momentum (OAM), has been intensively studied primarily as a discrete integer. However, realizing topological charges with arbitrary, continuous values remains a significant challenge in structured light fields. In this work, we demonstrate that continuous tuning of the effective topological charge (meff) can be achieved by designing a radially varying state of polarization (SOP) in a perfect vector vortex beam. Our approach utilizes the synergistic coupling between the beam's azimuthal phase and the engineered radial polarization gradient. Both theoretical calculations and experimental results show that the magnitude and sign of meff are precisely determined by two key parameters: a phase-dependent parameter controlling the local SOP and the beam's waist radius. The high precision of this control is validated through optical tweezer experiments, where the angular velocities of trapped particles are shown to scale linearly with the continuously adjustable meff. This work not only breaks the conventional discreteness barriers of OAM but also offers a highly versatile platform for advanced applications in light field manipulation and dynamical microparticle control.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"33 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147681633","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