Nanophotonics最新文献_第3页

Bio-inspired multispectral camouflage material for microwave, infrared, and visible bands based on single hierarchical metasurface 基于单一层次超表面的微波、红外和可见光波段仿生多光谱伪装材料

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2025-04-30 DOI: 10.1515/nanoph-2025-0024

Shiju Liu, Congyang Zhou, Ruiyang Tan, Mengqi Han, Zhijing Wu, Ping Chen

{"title":"Bio-inspired multispectral camouflage material for microwave, infrared, and visible bands based on single hierarchical metasurface","authors":"Shiju Liu, Congyang Zhou, Ruiyang Tan, Mengqi Han, Zhijing Wu, Ping Chen","doi":"10.1515/nanoph-2025-0024","DOIUrl":"https://doi.org/10.1515/nanoph-2025-0024","url":null,"abstract":"Nature can significantly inspire humans. Chameleons, jellyfish, and many other creatures use unique camouflage methods. Multispectral camouflage materials are highly desirable to against progressive multispectral detection. The proposed structure should be simple and highly transparent to ensure a wide application range. In this study, a bio-inspired multispectral camouflage material with visible transparency, microwave diffusion, and infrared (IR) camouflage was designed, fabricated, and tested. Multispectral camouflage performance was achieved on a single metasurface by the following steps: First, a nanoscale multilayered film consisting of an oxide and metal was unitized to achieve a low IR emissivity and high visible transmittance. Then, two units were designed to obtain a phase difference, thus realizing the microwave diffusion performance. Based on the relationship between the area filling fraction and IR emissivity, the units can perform puzzled imaging under an IR thermal camera. The structural parameters were calculated and optimized through an equivalent circuit model-based artificial intelligence algorithm. Then, a 10 dB reduction in radar cross section from 7 GHz to 16 GHz, a puzzled IR thermal image, and a high optical transmittance (>0.7) were achieved. The work provides significant guidance for the design and fabrication of multispectral camouflage materials.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"96 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143898083","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 Q-contrast terahertz quantum cascade laser via bandgap-confined bound state in the continuum 高q -对比度太赫兹量子级联激光器在连续体中的带隙限制束缚态

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2025-04-30 DOI: 10.1515/nanoph-2024-0757

Hanyu Liu, Jieyuan Cui, Qian Wang, Lianhe Li, Alexander Giles Davies, Edmund Harold Linfield, Qi Jie Wang

{"title":"High Q-contrast terahertz quantum cascade laser via bandgap-confined bound state in the continuum","authors":"Hanyu Liu, Jieyuan Cui, Qian Wang, Lianhe Li, Alexander Giles Davies, Edmund Harold Linfield, Qi Jie Wang","doi":"10.1515/nanoph-2024-0757","DOIUrl":"https://doi.org/10.1515/nanoph-2024-0757","url":null,"abstract":"Photonic bound states in the continuum (BICs) are optical modes that remain highly localized despite co-existing with radiating waves in the continuum, attracting considerable attention for both fundamental studies and technological innovations. Conventional single-mode BIC lasers predominantly focus on maximizing the Q-factor of a specific mode, often overlooking the critical role of Q-contrast – the difference in Q-factors between the highest-Q BIC mode and competing modes – which is crucial for achieving stable single-mode lasing. In this study, we present a compact, high Q-contrast BIC laser, enabled by strategically optimizing the alignment of the TM1 band of the core domain with the shell domain to confine the high Q-factor mode within the core. Using a quantum cascade laser chip operating in the terahertz (THz) regime, this design achieves a Q-contrast ratio of approximately 2.3, resulting in stable single mode lasing across the dynamic region with a side-mode suppression ratio of ∼20 dB. These findings underscore the pivotal role of Q-contrast in photonic lasers, with promising implications for applications in THz lasers, sensors, harmonic signal generators and modulators.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"34 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143898084","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

Supershift properties for nonanalytic signals 非解析信号的超移性质

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2025-04-29 DOI: 10.1515/nanoph-2024-0718

Fabrizio Colombo, Irene Sabadini, Daniele Carlo Struppa, Alain Yger

引用次数: 0

Single-photon emitters in PECVD-grown silicon nitride films: from material growth to photophysical properties pecvd生长的氮化硅薄膜中的单光子发射器：从材料生长到光物理性质

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2025-04-28 DOI: 10.1515/nanoph-2024-0506

Zachariah O. Martin, Alexander Senichev, Pranshu Maan, Mustafa G. Ozlu, Miroslava Marinova, Zhongxia Shang, Alexei Lagutchev, Alexandra Boltasseva, Vladimir M. Shalaev

{"title":"Single-photon emitters in PECVD-grown silicon nitride films: from material growth to photophysical properties","authors":"Zachariah O. Martin, Alexander Senichev, Pranshu Maan, Mustafa G. Ozlu, Miroslava Marinova, Zhongxia Shang, Alexei Lagutchev, Alexandra Boltasseva, Vladimir M. Shalaev","doi":"10.1515/nanoph-2024-0506","DOIUrl":"https://doi.org/10.1515/nanoph-2024-0506","url":null,"abstract":"Silicon nitride (SiN) is a key material for quantum photonics due to its wide transparency window, high refractive index, low optical losses, and semiconductor foundry compatibility. We study the formation of single-photon emitters in SiN films grown by plasma-enhanced chemical vapor deposition (PECVD), exploring their photophysical properties and dependence on growth conditions. Emitters were observed across the entire range of nitrogen-to-silicon precursor ratios, from silicon-rich to nitrogen-rich conditions, enabled by the low background fluorescence. We demonstrate single-photon emitters in SiN films with a higher refractive index (1.8–1.9) compared to our previous reports (∼1.7). Notably, nitrogen-rich, thinner films yield particularly bright emitters with shorter emission lifetimes, likely due to more efficient annealing. Silicon-rich SiN films exhibit red-shifted emission, suggesting that composition may provide a mechanism for wavelength tuning. These findings establish the feasibility of emitters formation in foundry standard PECVD tools, advancing the scalability and lab-to-fab transition of SiN-based quantum photonic technologies.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"35 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143884907","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

Dielectric permittivity extraction of MoS2 nanoribbons using THz nanoscopy 太赫兹纳米镜提取二硫化钼纳米带的介电常数

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2025-04-25 DOI: 10.1515/nanoph-2025-0060

Henrik B. Lassen, William V. Carstensen, Denys I. Miakota, Ganesh Ghimire, Stela Canulescu, Peter U. Jepsen, Edmund J. R. Kelleher

{"title":"Dielectric permittivity extraction of MoS2 nanoribbons using THz nanoscopy","authors":"Henrik B. Lassen, William V. Carstensen, Denys I. Miakota, Ganesh Ghimire, Stela Canulescu, Peter U. Jepsen, Edmund J. R. Kelleher","doi":"10.1515/nanoph-2025-0060","DOIUrl":"https://doi.org/10.1515/nanoph-2025-0060","url":null,"abstract":"The nanoscale optical properties of high-quality MoS2 nanoribbons are investigated using THz nanoscopy based on a scattering-type scanning probe. The nanoribbons comprise a multilayer core, surrounded by monolayer edges. A featureless complex permittivity spectrum covering the range 0.6–1.6 THz is extracted from experimental time-domain measurements through a minimization procedure, adopting an extended finite-dipole model of the probe–sample interaction. Real-space mapping of the nanoribbon reveals variations in the local permittivity down to the instrument-limited resolution, on the order of 30 nm. Clustering analysis statistically identifies regions of lower apparent permittivity that we attribute to a high curvature at the edges of the nanoribbon causing an increase in local material strain or cross-talk in the measured signal with topography-induced measurement artifacts. The core of the nanoribbon contains two regions that follow tightly distributed, but slightly shifted Gaussian statistics in complex permittivity space, with the real part mean of both distributions lying around 5.4 and compatible with literature values of the static permittivity of thin-film MoS2 reported previously. Our results show that the nanoribbons exhibit a modest degree of dielectric variation at the nanoscale that could be explained by heterogeneous doping or variations in the local defect density. We believe that our approach could be useful for the direct real-space measurement of dielectric disorder in other low-dimensional semiconducting material systems.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"42 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143876007","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

Optical levitation of Janus particles within focused cylindrical vector beams 聚焦圆柱形矢量光束中Janus粒子的光学悬浮

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2025-04-25 DOI: 10.1515/nanoph-2024-0774

Alessandro Magazzù, Iryna Kasianiuk, Denis Kasyanyuk, Agnese Callegari, Giovanni Volpe, Onofrio M. Maragò, Luca Biancofiore

{"title":"Optical levitation of Janus particles within focused cylindrical vector beams","authors":"Alessandro Magazzù, Iryna Kasianiuk, Denis Kasyanyuk, Agnese Callegari, Giovanni Volpe, Onofrio M. Maragò, Luca Biancofiore","doi":"10.1515/nanoph-2024-0774","DOIUrl":"https://doi.org/10.1515/nanoph-2024-0774","url":null,"abstract":"The confinement and manipulation of Janus particles have recently garnered significant interest due to their potential applications in fields such as nanotechnology and biophysics, where, under specific circumstances, they can act as microengines and drug carriers. However, the dynamics of Janus particles mostly rely on chemical reactions or thermal gradients, limiting their precision application. To tackle these limitations, we propose the 3D manipulation of Janus particles using focused cylindrical vector beams with a doughnut shaped intensity profile above the focal spot. In particular, we study the behaviour, orientation and manipulation of different highly reflective Janus particles composed of silica or polystyrene with a gold cap in the presence of optical potentials generated by focused cylindrical vector beams. Where the radiation pressure predominantly affects the gold cap rather than the bare particle body of the particle. We demonstrated the potential of the proposed levitation technique for controlling a wide range of Janus particles and real-life complex objects with high reflectivity.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"74 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143872865","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

Disordered plasmonic system with dense copper nano-island morphology 具有致密铜纳米岛形态的无序等离子体系统

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2025-04-24 DOI: 10.1515/nanoph-2024-0743

Tlek Tapani, Vincenzo Caligiuri, Yanqiu Zou, Andrea Griesi, Yurii P. Ivanov, Massimo Cuscunà, Gianluca Balestra, Haifeng Lin, Anastasiia Sapunova, Paolo Franceschini, Andrea Tognazzi, Costantino De Angelis, Giorgio Divitini, Riccardo Carzino, Hyunah Kwon, Peer Fischer, Roman Krahne, Nicolò Maccaferri, Denis Garoli

{"title":"Disordered plasmonic system with dense copper nano-island morphology","authors":"Tlek Tapani, Vincenzo Caligiuri, Yanqiu Zou, Andrea Griesi, Yurii P. Ivanov, Massimo Cuscunà, Gianluca Balestra, Haifeng Lin, Anastasiia Sapunova, Paolo Franceschini, Andrea Tognazzi, Costantino De Angelis, Giorgio Divitini, Riccardo Carzino, Hyunah Kwon, Peer Fischer, Roman Krahne, Nicolò Maccaferri, Denis Garoli","doi":"10.1515/nanoph-2024-0743","DOIUrl":"https://doi.org/10.1515/nanoph-2024-0743","url":null,"abstract":"Dry synthesis is a highly versatile method for the fabrication of nanoporous metal films, since it enables easy and reproducible deposition of single or multi-layers of nanostructured materials that can find intriguing applications in plasmonics, photochemistry and photocatalysis, to name a few. Here, we extend the use of this methodology to the preparation of copper nano-islands that represent an affordable and versatile example of disordered plasmonic substrates. Although the island morphology is disordered, the high density of these nanostructures with large surface area results in a good homogeneity on a macroscale, which is beneficial for plasmonic applications such as bio-sensing and photo-catalysis. With cathodoluminescence and electron-energy-loss spectroscopies we confirm the nano-islands as sources of the local field enhancement and identify the plasmonic resonance bands in the visible and near-infrared spectral range. The decay dynamics of the plasmonic signal are slower in the nano-island as compared to bulk copper films, which can be rationalized by a reduced energy dissipation in the nano-island films. Our study demonstrates a robust and lithography-free fabrication pathway to obtain nanostructured plasmonic copper substrates that represent a highly versatile low-cost alternative for future applications ranging from sensing to photochemistry and photocatalysis.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"42 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143872883","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

Ultra-broadband and passive stabilization of ultrafast light sources by quantum light injection 量子光注入超快光源的超宽带无源稳定

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2025-04-24 DOI: 10.1515/nanoph-2024-0634

Nicholas Rivera, Shiekh Zia Uddin, Jamison Sloan, Marin Soljačić

{"title":"Ultra-broadband and passive stabilization of ultrafast light sources by quantum light injection","authors":"Nicholas Rivera, Shiekh Zia Uddin, Jamison Sloan, Marin Soljačić","doi":"10.1515/nanoph-2024-0634","DOIUrl":"https://doi.org/10.1515/nanoph-2024-0634","url":null,"abstract":"Nonlinear optical effects such as frequency conversion form the basis for many practical light sources. In a variety of settings, the performance of such sources is limited by quantum noise. In many nonlinear systems, this quantum noise gets strongly amplified, as a result of the large sensitivity of the nonlinear dynamics to changes in the initial conditions − a feature common to many nonlinear systems. Here, we develop a general theory of quantum noise resulting from nonlinear dynamics initiated by many-photon Gaussian quantum states. The theory provides guidelines to find the optimal quantum state to inject to maximally suppress the noise at the output. As a concrete example of the concept and theory, we consider the nonlinear optical phenomenon of supercontinuum generation by a femtosecond pulse, a famously noise-generating process, which is important in a range of applications in materials characterization and life science. By seeding supercontinuum generation with pulsed squeezed vacuum, one can achieve order-of-magnitude magnitude reduction of intensity and phase noise simultaneously, over a broad band of wavelengths, passively, and with no change in spectrum. The large magnitude and bandwidth of this effect is challenging to achieve by other means of stabilization, pointing to a promising approach for controlling quantum noise in a variety of nonlinear systems.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"140 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143872884","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

Topological chiral-gain in a Berry dipole material Berry偶极子材料的拓扑手性增益

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2025-04-24 DOI: 10.1515/nanoph-2024-0681

Filipa R. Prudêncio, Mário G. Silveirinha

引用次数: 0

Confocal polarization tomography of dielectric nanocavities 电介质纳米腔的共焦偏振层析成像

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2025-04-23 DOI: 10.1515/nanoph-2024-0744

Frederik Schröder, Martin P. van Exter, Meng Xiong, George Kountouris, Martijn Wubs, Philip T. Kristensen, Nicolas Stenger

引用次数: 0