ACS Photonics最新文献_第8页

Ultra-compact Photonic Encoder for Optoelectronic Fusion Computing 用于光电融合计算的超紧凑光子编码器

IF 6 1区物理与天体物理

ACS Photonics Pub Date : 2026-10-07 Epub Date: 2026-09-24 DOI: 10.1021/acsphotonics.6c01403

Wei Cheng, Chongchong Ran, Changmao Deng, ZheCheng Zhu, Lehan Zhao, Xing Mou, Jiagui Wu, Yaohua Wang

{"title":"Ultra-compact Photonic Encoder for Optoelectronic Fusion Computing","authors":"Wei Cheng, Chongchong Ran, Changmao Deng, ZheCheng Zhu, Lehan Zhao, Xing Mou, Jiagui Wu, Yaohua Wang","doi":"10.1021/acsphotonics.6c01403","DOIUrl":"10.1021/acsphotonics.6c01403","url":null,"abstract":"Photonic encoders (PEs) provide high-speed optical frontends foroptoelectronic fusion computing by transforming input data into compactfeature representations before electronic processing. However, thelarge footprint of existing photonic encoder architectures limitsthe integration density required for high-dimensional data processing.Here, we propose an ultracompact photonic encoder (UC-PE) implementedon a standard silicon-on-insulator platform, leveraging a fabrication-awareinverse-design strategy. The footprint of the UC-PE is only 33.28μm2, and the device works as a fixed passive opticalencoder without task-specific photonic reconfiguration. The UC-PEis integrated into a hybrid optoelectronic computing system, wherethe optical front end generates compact feature maps and the electronicbackend performs task-dependent learning. For image classification,the system achieves 94.29% accuracy on the MNIST data set and maintainsclassification capability on texture-rich Fashion-MNIST data set withoutphotonic hardware reconfiguration. Beyond classification, the systemperforms image compression and reconstruction with a mean PSNR of28.53 dB. These results indicate that the UC-PE can reduce the footprintbarrier of photonic encoders and provide a compact route toward high-throughputoptoelectronic fusion computing.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"13 19","pages":"5724–5733"},"PeriodicalIF":6.0,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149049548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Monolithically Integrated Perovskites for High-Performance Vapor-Deposited Narrowband Photodetectors 单片集成钙钛矿用于高性能气相沉积窄带光电探测器

IF 6 1区物理与天体物理

ACS Photonics Pub Date : 2026-10-07 Epub Date: 2026-09-28 DOI: 10.1021/acsphotonics.6c01728

Serhii Derenko, Lidón Gil-Escrig, Joost W. C. Reinders, Cristina Roldán-Carmona, Daniel Tordera, Michele Sessolo

{"title":"Monolithically Integrated Perovskites for High-Performance Vapor-Deposited Narrowband Photodetectors","authors":"Serhii Derenko, Lidón Gil-Escrig, Joost W. C. Reinders, Cristina Roldán-Carmona, Daniel Tordera, Michele Sessolo","doi":"10.1021/acsphotonics.6c01728","DOIUrl":"https://doi.org/10.1021/acsphotonics.6c01728","url":null,"abstract":"Narrowband photodetectors, owing to their intrinsic spectralselectivity,are essential for applications such as optical communication and imaging.One strategy to preserve the high quantum efficiency of thin photodiodesis to combine them with optical filters. However, externally integratedfilters increase device complexity and compromise robustness, whileelectrically active integrated filters generate parasitic photocurrentthat limits spectral rejection. Here, we monolithically integratean optically active but electrically passive perovskite filter withinthe photodetector architecture, and compare its performance with thatof a conventional external filter configuration. In-depth characterizationof both device designs shows that the integrated architecture preservesthe performance of the active photodiode while providing narrowbandoperation, with a full width at half maximum (FWHM) of 50 nm at 750nm and a specific detectivity of 1 × 1013 Jones at−0.5 V. Beyond its higher responsivity, the integrated deviceshows no observable filter degradation after three months of storagein air, in contrast to the nonintegrated configuration. These resultsdemonstrate that monolithic integration of an electrically passiveperovskite filter enables stable, high-performance narrowband photodetectorswithout compromising device performance.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"13 19","pages":"5868–5875"},"PeriodicalIF":6.0,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149093676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

BidirectionalChiral-Achiral Coupling for TunableLateral Optical Forces in Nanoparticle Systems 纳米粒子系统中可调侧光力的双向手性-非手性耦合

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2026-10-07 DOI: 10.1021/acsphotonics.6c01956

Lv Feng,Ruohu Zhang,Zhigang Li,Bingjue Li,Binfeng Yun,Guanghao Rui

{"title":"Bidirectional\u0000Chiral-Achiral Coupling for Tunable\u0000Lateral Optical Forces in Nanoparticle Systems","authors":"Lv Feng,Ruohu Zhang,Zhigang Li,Bingjue Li,Binfeng Yun,Guanghao Rui","doi":"10.1021/acsphotonics.6c01956","DOIUrl":"https://doi.org/10.1021/acsphotonics.6c01956","url":null,"abstract":"Abstract Light-induced optical forces provide a powerful route for manipulating nanoparticles, and chiral optical forces are particularly important for enantioselective trapping, separation, and sensing. Existing studies have mainly focused on the force response of chiral nanoparticles themselves, while the mutual photomechanical coupling between chiral and achiral nanoparticles remains insufficiently understood. Here, we reveal a bidirectional optical-force coupling mechanism in chiral-achiral nanoparticle systems. Under linearly polarized plane-wave illumination, an achiral nanoparticle can experience a tunable lateral optical force when coupled to a neighboring chiral nanoparticle. This counterintuitive force originates from chirality-mediated mirror-symmetry breaking in the coupled scattering process, which generates an asymmetric transverse momentum flow in the scattered field. The force direction reverses when the handedness of the chiral particle is inverted, and it can also be switched by rotating the incident polarization. Conversely, adjacent achiral Mie resonators can reshape and enhance the local electromagnetic field around a small chiral particle, leading to a substantially amplified chirality-dependent lateral force. Furthermore, by extending the system from spherical chiral particles to structurally chiral helical nanostructures, we show that chirality transfer remains robust and can further reverse the direction of the lateral force on adjacent achiral particles. These results provide a mechanistic understanding of chirality transfer and near-field-enhanced optical forces in hybrid chiral-achiral nanoparticle systems and suggest new opportunities for enantioselective optical manipulation, force-based chiral sensing, and chiral nanophotonic device design.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"26 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149092498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

CellDiffuser: Multimodal Optical Time-Stretch Imaging Flow Cytometry and Diffusion Models for Lung Cancer Immunotherapy Diagnosis 细胞扩散器：肺癌免疫治疗诊断的多模态光学时间-拉伸成像流式细胞术和扩散模型

IF 6 1区物理与天体物理

ACS Photonics Pub Date : 2026-10-07 Epub Date: 2026-09-15 DOI: 10.1021/acsphotonics.6c01547

Zhaoyi Ye, Congkuan Song, Yueyun Weng, Sheng Liu, Du Wang, Liye Mei, Cheng Lei

{"title":"CellDiffuser: Multimodal Optical Time-Stretch Imaging Flow Cytometry and Diffusion Models for Lung Cancer Immunotherapy Diagnosis","authors":"Zhaoyi Ye, Congkuan Song, Yueyun Weng, Sheng Liu, Du Wang, Liye Mei, Cheng Lei","doi":"10.1021/acsphotonics.6c01547","DOIUrl":"10.1021/acsphotonics.6c01547","url":null,"abstract":"Immune checkpoint inhibitors have emerged as frontlinetherapiesfor lung cancer, yet the lack of reliable biomarkers for predictingthe treatment response remains a critical challenge. While single-cellanalysis offers a potent approach to probing physiological states,conventional techniques suffer from limited throughput and insufficientmultimodal profiling capability. To address the aforementioned issues,we propose a novel framework for lung cancer immunotherapy diagnosis.Specifically, we develop multimodal optical time-stretch imaging flowcytometry (OTS-IFC) that simultaneously acquires label-free bright-field(BF) and quantitative phase (QP) images at a throughput of 10,000cells/s. In response to the influence of phase unwrapping artifacts,we propose CellDiffuser, an intermediate domain transformation diffusionmodel that aligns BF and QP images in a shared latent space at a preselectedtime step, thus generating high-fidelity synthesized QP images. CellDiffuserachieves an SSIM of 0.747 in the leukocyte immunotherapy responseprediction data set and an SSIM of 0.708 in the A549 cell death stateidentification data set. Finally, our framework demonstrates its practicalutility in lung cancer immunotherapy diagnosis in the above two clinicallyrelevant data sets. This work establishes a cost-effective, high-throughputframework for single-cell phenotyping, offering a new paradigm toguide lung cancer personalized immunotherapy diagnosis. The code isavailable at: https://github.com/yzygit1230/CellDiffuser.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"13 19","pages":"5787–5796"},"PeriodicalIF":6.0,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148973629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

LAMP: Large-Area Molecular Mapping Platform LAMP：大面积分子定位平台

IF 6 1区物理与天体物理

ACS Photonics Pub Date : 2026-10-07 Epub Date: 2026-09-22 DOI: 10.1021/acsphotonics.6c01459

Zhiliang Huang, Wei Ju, Shuai Yan, Yage Chen, Shuai Wang, Yiran Li, Yue Huang, Na Li, Haozheng Li, Guang Yang, Sicheng Li, Xiangliang Yang, Yuan Tian, Huaqiu Zhang, Ping Wang

{"title":"LAMP: Large-Area Molecular Mapping Platform","authors":"Zhiliang Huang, Wei Ju, Shuai Yan, Yage Chen, Shuai Wang, Yiran Li, Yue Huang, Na Li, Haozheng Li, Guang Yang, Sicheng Li, Xiangliang Yang, Yuan Tian, Huaqiu Zhang, Ping Wang","doi":"10.1021/acsphotonics.6c01459","DOIUrl":"10.1021/acsphotonics.6c01459","url":null,"abstract":"By providing unique chemical specificity and quantitativemetabolicimaging, label-free stimulated Raman scattering (SRS) and coherentanti-Stokes Raman scattering (CARS) microscopy is now emerging asthe next-generation clinical decision maker by providing molecularcontrast of cancerous tissues. However, the field of view (FOV) ofeither SRS or CARS is limited to hundreds of microns so far, due totheir nonlinear nature demanding a tight focal point and instantaneoushigh peak energy. Here, we adopt a 1 MHz femtosecond pulse laser toboost the CARS signal and highly sensitive fly-eye SiPM detectorsfor detection, and develop a large-area molecular mapping platform(LAMP) with an FOV of 3.5 × 3.5 cm2. LAMP combinesCARS, second-harmonic generation (SHG), and two-photon excited fluorescence(TPEF), and achieves label-free multimodal imaging of intact bulksurgical tissue specimens. We performed large-area multimodal imagingof ovarian cancer tissues and obtained structural distributions oflipid accumulation, collagen fibers, and natural pigments that exhibitautofluorescence. LAMP holds great promise for real clinical applications,including chemical pathology and surgical guidance.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"13 19","pages":"5741–5748"},"PeriodicalIF":6.0,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149019644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Wavefront-Engineered Pd Metasurface for Spectrometer-Free Single-Point Photonic Hydrogen Readout 用于光谱仪的波前工程钯超表面-无单点光子氢读出

IF 6 1区物理与天体物理

ACS Photonics Pub Date : 2026-10-07 Epub Date: 2026-09-25 DOI: 10.1021/acsphotonics.6c01768

Yinqiang Guo, Hanyue Gao, Zhongqi Fan, Ping Bai, Bing Sun, Ruiwei Chen, Siqi Lu, Na Wang, Yongxia Su, Xin Shang

{"title":"Wavefront-Engineered Pd Metasurface for Spectrometer-Free Single-Point Photonic Hydrogen Readout","authors":"Yinqiang Guo, Hanyue Gao, Zhongqi Fan, Ping Bai, Bing Sun, Ruiwei Chen, Siqi Lu, Na Wang, Yongxia Su, Xin Shang","doi":"10.1021/acsphotonics.6c01768","DOIUrl":"10.1021/acsphotonics.6c01768","url":null,"abstract":"Palladium (Pd) hydride exhibits a reversible modulationof itsplasmonic response under hydrogenation, but translating this materialsensitivity into scalable photonic readout architectures remains challenging.Here we introduce a metasurface concept in which hydrogen-inducedchanges in Pd are directly mapped into far-field intensity variationsthrough wavefront-engineered off-axis focusing. A nonlinear phase-encodingstrategy enables deterministic conversion of the Pd hydrogenationstate into spatially filtered focal signals, allowing single-pointelectrical readout without spectrometers or imaging systems. The resultingplatform establishes a direct link between chemical-state modulationand photonic wavefront control, where hydrogenation-dependent plasmonicvariations are transduced into monotonic intensity changes at a fixeddetection point. Noise-limited analysis indicates that the encodedresponse remains resolvable under realistic detection conditions,while structural perturbations preserve the monotonic mapping. Thiswork provides a general route toward chemical-state-to-intensity photonictransduction using metasurface wavefront engineering.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"13 19","pages":"5905–5917"},"PeriodicalIF":6.0,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149049834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 Interlayer Exciton Lifetime and Temporal Coherence in Free-Standing WSe2/WS2 Heterobilayers 独立WSe2/WS2异质层间激子寿命和时间相干性的增强

IF 6 1区物理与天体物理

ACS Photonics Pub Date : 2026-10-07 Epub Date: 2026-06-23 DOI: 10.1021/acsphotonics.6c00630

Marah O. A. Alqedra, Hilal Korkut, Ahmet Osman Ölçer, Ibrahim Sarpkaya

{"title":"Enhanced Interlayer Exciton Lifetime and Temporal Coherence in Free-Standing WSe2/WS2 Heterobilayers","authors":"Marah O. A. Alqedra, Hilal Korkut, Ahmet Osman Ölçer, Ibrahim Sarpkaya","doi":"10.1021/acsphotonics.6c00630","DOIUrl":"10.1021/acsphotonics.6c00630","url":null,"abstract":"Transition metal dichalcogenide heterobilayers are highlysusceptibleto external perturbations, leading to pronounced variations in theiroptical properties. While recent studies have shown that suspendingheterobilayers in air significantly enhances the formation efficiencyof interlayer excitons (IXs), the systematic investigation of thesubstrate effect on other fundamental optical properties, such asphotoluminescence (PL) line width, spontaneous emission lifetime,and exciton dephasing time at cryogenic temperatures, remains unexplored.Here, we investigate the optical properties of IXs in a substrate-freeenvironment by fabricating heterobilayers on a hole-patterned substrate.Owing to reduced dielectric screening and the suppression of substrate-inducednonradiative decay channels, we observed strongly enhanced IX PL emission,a 2-fold narrowing of the line width, and prolonged emission lifetimesin suspended regions. Furthermore, we report for the first time measurementsof IX dephasing times in free-standing heterobilayers, revealing a2-fold enhancement arising from the removal of deformation-potentialcoupling between excitons and substrate phonons. Overall, our resultshighlight the crucial role of the substrate in governing the emissiondynamics of IXs.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"13 19","pages":"5546–5553"},"PeriodicalIF":6.0,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148336348","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 and Interface-Driven Localized Emission in MoSe2 Monolayers on GaN Nanopillars 氮化镓纳米柱上mose2单分子膜的应变和界面驱动局域发射

IF 6 1区物理与天体物理

ACS Photonics Pub Date : 2026-10-07 Epub Date: 2026-09-04 DOI: 10.1021/acsphotonics.6c01384

Abderrahim Lamrani Alaoui, Álvaro Moreno, Maximilian Heithoff, Virginie Brändli, Aimeric Courville, Maksym Gromovyi, Sébastien Chenot, Mahima S Srivastava, Stéphane Vézian, Benjamin Damilano, Frank Koppens, Yannick Chassagneux, Christophe Voisin, Philippe Boucaud, Antoine Reserbat-Plantey

{"title":"Strain and Interface-Driven Localized Emission in MoSe2 Monolayers on GaN Nanopillars","authors":"Abderrahim Lamrani Alaoui, Álvaro Moreno, Maximilian Heithoff, Virginie Brändli, Aimeric Courville, Maksym Gromovyi, Sébastien Chenot, Mahima S Srivastava, Stéphane Vézian, Benjamin Damilano, Frank Koppens, Yannick Chassagneux, Christophe Voisin, Philippe Boucaud, Antoine Reserbat-Plantey","doi":"10.1021/acsphotonics.6c01384","DOIUrl":"10.1021/acsphotonics.6c01384","url":null,"abstract":"Solid-state quantum emitters (QEs) in two-dimensionalsemiconductorsoffer compact, chip-compatible sources for quantum photonics. In transition-metaldichalcogenides (TMDs), nanopillars are widely used to induce localizedemission, yet the underlying confinement mechanism and the relativeroles of strain versus dielectric environment remain unclear. Herewe combine hyperspectral superlocalization of photoluminescence withcoregistered AFM topography and phase to map localized states (LS)positions in MoSe2 on GaN nanopillars and correlate themwith bending strain and the local environment. Contrary to a purelystrain-driven picture, LS cluster at suspended–supported interfacesaround the pillar apex and span a broad strain range with no clearthreshold, while being scarce along high-strain ripples. We discussthe candidate mechanisms, including the local dielectric environment,and suggest coengineering of strain gradients and nanoscale interfaceheterogeneity for deterministic emitter positioning in TMDs.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"13 19","pages":"5693–5702"},"PeriodicalIF":6.0,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148895006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Physical Reservoir Computing with Optoelectronic Memristors for Event-Camera 事件相机用光电忆阻器计算物理储层

IF 6 1区物理与天体物理

ACS Photonics Pub Date : 2026-10-07 Epub Date: 2026-09-22 DOI: 10.1021/acsphotonics.6c01409

Qiuting Ma, Kai Ma, Luyao Ma, Dongli Dong, Ai Chen, Shaotian Shi, Jiening Wu, Rui Yuan, Shukai Duan, Lidan Wang

{"title":"Physical Reservoir Computing with Optoelectronic Memristors for Event-Camera","authors":"Qiuting Ma, Kai Ma, Luyao Ma, Dongli Dong, Ai Chen, Shaotian Shi, Jiening Wu, Rui Yuan, Shukai Duan, Lidan Wang","doi":"10.1021/acsphotonics.6c01409","DOIUrl":"10.1021/acsphotonics.6c01409","url":null,"abstract":"The asynchronous and sparse event streams output by eventcameraspose a significant challenge to traditional computing architectures,whereas physical reservoir computing (RC) systems based on optoelectronicmemristors offer an effective solution for realizing efficient in-sensorcomputing vision architectures. In this work, we propose and fabricatea Pt/Ag/ZnO/Pt/Ti optoelectronic memristor with a vertically stackedstructure. Under ultraviolet light stimulation, the device exhibitsexcellent photoresponsive sensitivity, short-term synaptic plasticity,and dynamic relaxation characteristics. Upon the application of temporaloptical pulses, the device generates highly distinguishable branchingevolutionary trajectories, successfully mapping low-dimensional opticalsignals nonlinearly into a high-dimensional feature space. Leveragingthe device’s exceptional spatiotemporal mapping capabilities,we constructed a synergistic physical RC system of hardware and softwareand applied it to an event-camera data set. The results demonstratethat the system can efficiently decouple highly complex asynchronousspatiotemporal event streams, ultimately achieving a dynamic gesturerecognition accuracy of up to 94.17%. This study not only confirmsthe exceptional mapping capabilities of optoelectronic memristorsin processing complex asynchronous spatiotemporal data but also laysa solid hardware foundation for the development of next-generation,highly efficient, and low-power event-driven neuromorphic vision systems.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"13 19","pages":"5713–5723"},"PeriodicalIF":6.0,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149019619","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Finite-Size Effects in Periodic Silver Nanoparticle Arrays Probed by Electron Energy-Loss Spectroscopy Simulations 用电子能量损失谱模拟探测周期银纳米粒子射线中的有限尺寸效应

IF 6 1区物理与天体物理

ACS Photonics Pub Date : 2026-10-07 Epub Date: 2026-09-25 DOI: 10.1021/acsphotonics.6c01667

Rudin Kraja, Jordan Council, Alex B. Ferere, Nicolas Large

{"title":"Finite-Size Effects in Periodic Silver Nanoparticle Arrays Probed by Electron Energy-Loss Spectroscopy Simulations","authors":"Rudin Kraja, Jordan Council, Alex B. Ferere, Nicolas Large","doi":"10.1021/acsphotonics.6c01667","DOIUrl":"10.1021/acsphotonics.6c01667","url":null,"abstract":"Optical spectra of finite plasmonic nanoparticle arrayshave beenshown to converge rapidly toward those of infinite lattices, suggestingthat finite-size effects play a minor role. Here, we show that thisconclusion breaks down under localized excitation. Using electronenergy-loss spectroscopy (EELS) simulations and plasmon hybridizationtheory, we investigate finite two-dimensional silver nanoparticlearrays containing between 2 × 2 and 12 × 12 nanoparticles.Localized electron-beam excitation reveals a rich modal landscapecomposed of collective, edge-, corner-, and symmetry-selected resonancesthat are largely hidden from optical measurements. We show that, unlikefar-field optical spectra, which become relatively insensitive tofurther increases in array size, the EELS response retains strongsensitivity to array boundaries and reveals persistent edge- and corner-localizedmodes even in 12 × 12 nanoparticle arrays. EELS maps and surfacecharge distributions further reveal the coexistence of delocalizedcollective plasmons and strongly localized boundary modes whose excitationstrongly depends on the beam position. These results demonstrate thatfinite plasmonic arrays retain a complex mode structure beyond thataccessible through optical spectroscopy and establish EELS as a powerfultool for probing finite-size plasmonic phenomena.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"13 19","pages":"5838–5848"},"PeriodicalIF":6.0,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149049547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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