Applied Physics Letters最新文献_第7页

Neuromorphic synaptic applications of oxygen-deficient BaSnO3 thin films 缺氧BaSnO3薄膜在神经形态突触中的应用

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2025-01-15 DOI: 10.1063/5.0244406

Zhongwei Bai, Xuening Fan, Xiaorui Han, Bingcheng Luo

引用次数: 0

Realization of p-type MA-based perovskite solar cells based on exposure of the (002) facet 基于（002）面曝光的p型ma基钙钛矿太阳能电池的实现

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2025-01-15 DOI: 10.1063/5.0248954

Sihui Jia, Yixuan Li, Cuina Gao, Guocai Liu, Yingke Ren, Chao He, Xing-Tao An

引用次数: 0

High-strength elastomer separator for high-current-density-charging lithium metal batteries 用于大电流密度充电锂金属电池的高强度弹性体分离器

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2025-01-15 DOI: 10.1063/5.0243655

Shufeng Song, Fengkun Wei, Ren Zhang, Serguei V. Savilov, Anji Reddy Polu, Pramod K. Singh, Ning Hu

{"title":"High-strength elastomer separator for high-current-density-charging lithium metal batteries","authors":"Shufeng Song, Fengkun Wei, Ren Zhang, Serguei V. Savilov, Anji Reddy Polu, Pramod K. Singh, Ning Hu","doi":"10.1063/5.0243655","DOIUrl":"https://doi.org/10.1063/5.0243655","url":null,"abstract":"Utilizing lithium metal as an anode in batteries has been expected to replace conventional lithium-ion batteries. However, the mechanical properties and electrochemical performance of current separators do not meet the requirements for practical applications of lithium metal batteries (LMBs). Here, we report an elastomer separator with an interconnected structure of plastic-crystal-embedded and garnet-conductor-regulated thermoplastic polystyrene-b-poly(ethylene-r-butylene)-b-polystyrene elastomer integrated with the polyethylene matrix. The 14-micron-thick elastomer separators show a combination of excellent elongation of ∼115.2% and sufficiently high tensile strength of ∼56 MPa. The elastomer separators accommodate volume changes and block dendrites for high-current-density cycling of LMBs. As a demonstration, the elastomer separators enable stable operation of LMBs under stringent conditions, a practical high loading of 18 mg cm−2 LiNi0.8Co0.1Mn0.1O2 (NCM811) cathode at an extremely high charging/discharging current density of 1.8 mA cm−2, delivering a high reversible capacity of 164 mAh g−1 and capacity retention of 88% after 140 cycles.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"37 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142985983","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

Probing interfacial states in β-Ga2O3/SiO2 TFTs for high-response broad-band photodetection 用于高响应宽带光探测的β-Ga2O3/SiO2 TFTs界面态探测

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2025-01-15 DOI: 10.1063/5.0238245

Yonghui Zhang, Rui Zhu, Wenxing Huo, Huili Liang, Zengxia Mei

引用次数: 0

Quantum secure direct communication based on quantum error correction code 基于量子纠错码的量子安全直接通信

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2025-01-15 DOI: 10.1063/5.0245163

Chao-Wei Ding, Wen-Yang Wang, Wen-Da Zhang, Lan Zhou, Yu-Bo Sheng

{"title":"Quantum secure direct communication based on quantum error correction code","authors":"Chao-Wei Ding, Wen-Yang Wang, Wen-Da Zhang, Lan Zhou, Yu-Bo Sheng","doi":"10.1063/5.0245163","DOIUrl":"https://doi.org/10.1063/5.0245163","url":null,"abstract":"Quantum secure direct communication (QSDC) enables the message sender to directly transmit messages to the message receiver through quantum channel without keys. Environmental noise is the main obstacle for QSDC's practicality. For enhancing QSDC's noise robustness, we introduce the quantum error correction (QEC) code into QSDC and propose the QSDC protocol based on the redundancy code. This QSDC protocol correlates atomic state with the electron–photon entangled pairs and transmits photons in quantum channels for two rounds. The parties can construct the remote atomic logical entanglement channel and decode messages with the heralded photonic Bell state measurement (BSM) and single electron measurement. This QSDC protocol is unconditionally secure in theory and has some advantages. First, benefiting from the heralded photonic BSM, it can eliminate the influence from photon transmission loss and has the potential to realize long-distance secure message transmission. Second, taking use of the error correction function of the repetition code, the error rate caused by the decoherence during the second round of photon transmission can be reduced, which can reduce the message error and increase the secret message capacity. Third, the whole protocol is feasible under current experimental condition. Our QSDC protocol can be extended to use other stronger QEC code. It provides a promising method to promote QSDC's practicality in the future.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"49 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142986032","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

Highly selective aptasensor for optical detection of whole cell gastrointestinal pathogen Shigella dysenteriae at label-free liquid crystal–aqueous interface 用于无标记液晶-水界面全细胞胃肠道病原体痢疾志贺氏菌光学检测的高选择性适体传感器

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2025-01-15 DOI: 10.1063/5.0239218

Sayani Das, Ranadhir Chakraborty, Przemysław Kula, James McLaughlin, Susanta Sinha Roy

{"title":"Highly selective aptasensor for optical detection of whole cell gastrointestinal pathogen Shigella dysenteriae at label-free liquid crystal–aqueous interface","authors":"Sayani Das, Ranadhir Chakraborty, Przemysław Kula, James McLaughlin, Susanta Sinha Roy","doi":"10.1063/5.0239218","DOIUrl":"https://doi.org/10.1063/5.0239218","url":null,"abstract":"This paper describes a label-free liquid crystal (LC)-based biosensor for a rapid and straightforward detection of whole cell Shigella dysenteriae at aqueous interfaces using a bacteria-specific aptamer. The stimuli-receptive properties of LCs induce a change in the orientational ordering of molecules at the LC–aqueous interface. This interfacial phenomenon has been utilized to record target binding interactions of the biosensor. The homeotropic LC alignment at the glass–LC and the aqueous–LC interfaces was obtained using the aligning agent dimethyloctadecyl [3-(trimethoxysilyl)propyl] ammonium chloride and the self-assembling property of the cationic surfactant cetyltrimethylammonium bromide, respectively. The introduction of the negatively charged Shigella aptamer causes the homeotropic molecules to morph to a planar/tilted ordering. Upon adding a small quantity of Shigella cells in liquid media, the aptamer–bacterium interaction causes a redistribution of the surfactant at the LC–aqueous interface, restoring the homeotropic alignment. This results in a bright-to-dark optical change observed under a polarizing optical microscope, thus implying the presence of the microbes. This reported aptasensor demonstrates high specificity, with the limit of detection being 30 CFU/ml within a linear range of 1–105 CFU/ml. To test the utility of this system, the sensor was also tested with close taxonomic relatives S. dysenteriae as well as real samples from the food chain. This proposed LC-based sensor offers several advantages over conventional detection techniques for a quick and convenient way for the detection of whole cell targets.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"43 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142981320","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 strategy for enhancing phosphine oxide passivation capacity of perovskite solar cells by fluorination 氟化提高钙钛矿太阳能电池氧化膦钝化能力的策略

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2025-01-15 DOI: 10.1063/5.0232569

Sichang Liu, Bingqian Sun, Ding Hu, Hongxing Li, Yiling Li, Jia Yang, Gang Liu, Xiaoming Yuan, Hanyue Chen, Lili Ke

{"title":"A strategy for enhancing phosphine oxide passivation capacity of perovskite solar cells by fluorination","authors":"Sichang Liu, Bingqian Sun, Ding Hu, Hongxing Li, Yiling Li, Jia Yang, Gang Liu, Xiaoming Yuan, Hanyue Chen, Lili Ke","doi":"10.1063/5.0232569","DOIUrl":"https://doi.org/10.1063/5.0232569","url":null,"abstract":"Perovskite solar cells have experienced rapid development in the last few years due to their excellent photovoltaic properties, and their efficiency and stability have attracted widespread attention. Passivating interfacial defects has been universally recognized as an effective performance enhancement strategy for perovskite solar cells (PSCs), but most reported strategies often fail to simultaneously meet the requirements of efficiency and stability. This paper proposes to enhance the passivation function of phosphine oxide by fluorination. On the one hand, P=O is used to form coordination bonds with Pb2+ in perovskite. On the other hand, the strong hydrophobicity of F gives perovskite excellent moisture stability and can hydrogen bond to organic cations in the perovskite. Thanks to its strong chelation with the defect sites, it achieved optimized energy level arrangement, suppressed non-radiative recombination, and excellent operation stability. Consequently, the efficiency of the optimized device increased by 21.6% with a remarkable enhancement of 40 mV in VOC and remained more than 90% of its initial efficiency after aging in air environment for 1000 h, improving both efficiency and stability. This study demonstrates a promising functional modification strategy for constructing efficient, stable, and environmentally friendly PSCs.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"37 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142986033","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

Ferromagnetism and structural phase transition in monoclinic FeGe film 单斜FeGe薄膜的铁磁性和结构相变

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2025-01-15 DOI: 10.1063/5.0250221

Guangdong Nie, Guanghui Han, S. Z. Erfa, Kangxi Liu, Shijian Chen, Hao Ding, Fangdong Tang, Licong Peng, Young Sun, Deshun Hong

引用次数: 0

Field-free ultrafast magnetization reversal of a nanodevice by a chirped current pulse via spin-orbit torque 啁啾电流脉冲通过自旋轨道转矩实现纳米器件的无场超快磁化反转

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2025-01-15 DOI: 10.1063/5.0250645

YaDong Liu, M. T. Islam, X. S. Wang, X. R. Wang, T. Min

{"title":"Field-free ultrafast magnetization reversal of a nanodevice by a chirped current pulse via spin-orbit torque","authors":"YaDong Liu, M. T. Islam, X. S. Wang, X. R. Wang, T. Min","doi":"10.1063/5.0250645","DOIUrl":"https://doi.org/10.1063/5.0250645","url":null,"abstract":"We investigate the magnetization reversal of a perpendicularly magnetized nanodevice using a chirped current pulse (CCP) via spin-orbit torques (SOTs). Our numerically simulated findings demonstrate that both the field-like (FL) and damping-like (DL) components of SOT in CCP can be efficiently utilized to induce ultrafast magnetization reversal without any symmetry-breaking means. For a wide frequency range of the CCP, the minimal current density is significantly smaller compared to the current density of conventional SOT-reversal. This ultrafast reversal is achieved due to the CCP triggering enhanced energy absorption (emission) of the magnetization from (to) the FL- and DL-components of SOT before (after) crossing over the energy barrier. We also verify the robustness of the CCP-driven magnetization reversal at room temperature. Moreover, this strategy is applicable also to induce field-free ultrafast and efficient switching of perpendicular synthetic antiferromagnetic and ferrimagnetic (SFi) nanodevices. The minimal current density of deterministic switching of the SFi system decreases significantly with the reduction of one layer's magnetization, mainly because the SOT amplitude is inversely proportional to the saturation magnetization. Therefore, this study enriches the basic understanding of field-free SOT-reversal and provides a way to realize ultrafast SOT-MRAM devices with various free layer designs.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"27 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142986040","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

Design of spike-timing-dependent plasticity synapses based on CoPt-SOT device and its application in all-spin spiking neural network 基于CoPt-SOT器件的峰值时间依赖性可塑性突触设计及其在全自旋峰值神经网络中的应用

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2025-01-15 DOI: 10.1063/5.0245481

Liu Yang, Shuguang Zhang, Likun Qian, Ying Tao, Fang Jin, Huihui Li, Zhe Guo, RuJun Tang, Kaifeng Dong

{"title":"Design of spike-timing-dependent plasticity synapses based on CoPt-SOT device and its application in all-spin spiking neural network","authors":"Liu Yang, Shuguang Zhang, Likun Qian, Ying Tao, Fang Jin, Huihui Li, Zhe Guo, RuJun Tang, Kaifeng Dong","doi":"10.1063/5.0245481","DOIUrl":"https://doi.org/10.1063/5.0245481","url":null,"abstract":"Spintronic could be used to simulate synapses or neurons due to its multistate storage characteristics. In this work, a reliable design of all-spin spiking neural networks (SNN) based on spin–orbit torque (SOT) devices has been proposed in A1 CoPt single layer. The CoPt-SOT devices exhibited field-free SOT switching, and the magnetization reversal mechanism was inferred to be a combination of domain nucleation and domain-wall propagation as observed through magneto-optical Kerr microscopy images. Moreover, the current-induced SOT switching process of the device exhibited stable multistate magnetic switching behavior, which can be controlled by varying the amplitude and pulse width of the current pulse. Meanwhile, the spike-timing-dependent plasticity (STDP) curve was inverted when the SOT switching polarity was reversed by different magnetic fields, and the change in anomalous Hall resistances (ΔRH) in the STDP curve was linearly related to the SOT switching ratio. In addition, at the zero magnetic field, we constructed an all-spin SNN using STDP synapses and leaky integrate-and-fire neurons of CoPt-SOT devices. The handwritten digits recognition rate of this all-spin SNN network was 89.9%. These results substantiate that the CoPt single layer represents a promising hardware solution for high-performance neuromorphic computing, with applicability in the domain of SNN.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"42 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142986031","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