Light-Science & Applications最新文献_第2页

10-km passive drone detection using broadband quantum compressed sensing imaging 利用宽带量子压缩传感成像进行10公里被动无人机探测

Light-Science & Applications Pub Date : 2025-07-14 DOI: 10.1038/s41377-025-01878-y

Shuxiao Wu, Jianyong Hu, Jiaqing Ge, Yanshan Fan, Zhexin Li, Liu Yang, Kai Song, Jiazhao Tian, Zhixing Qiao, Guosheng Feng, Xilong Liang, Changgang Yang, Ruiyun Chen, Chengbing Qin, Guofeng Zhang, Liantuan Xiao, Suotang Jia

引用次数: 0

Forward Brillouin scattering in few-mode fibers 低模光纤中的正向布里渊散射

Light-Science & Applications Pub Date : 2025-07-09 DOI: 10.1038/s41377-025-01877-z

Elad Layosh, Elad Zehavi, Alon Bernstein, Mirit Hen, Maayan Holsblat, Ori Pearl, Avi Zadok

{"title":"Forward Brillouin scattering in few-mode fibers","authors":"Elad Layosh, Elad Zehavi, Alon Bernstein, Mirit Hen, Maayan Holsblat, Ori Pearl, Avi Zadok","doi":"10.1038/s41377-025-01877-z","DOIUrl":"https://doi.org/10.1038/s41377-025-01877-z","url":null,"abstract":"Forward Brillouin scattering is an opto-mechanical effect in which two co-propagating optical fields couple with an acoustic mode in a common medium. The effect has been studied in standard optical fibers since 1985, however nearly all studies have been limited to the single optical mode regime. Forward Brillouin scattering in single-mode fibers takes place through two classes of acoustic modes only: purely radial ones and modes of two-fold azimuthal symmetry. Acoustic modes may only be stimulated at their cut-off frequencies, and the acoustic frequencies in standard fibers are limited to 600 MHz. In this work, we extend the study of forward Brillouin scattering to few-mode optical fibers through analysis, calculations, and experiment. Measurements are performed in a commercial, off-the-shelf step-index fiber with standard cladding through three optical modes. We demonstrate for the first time the stimulation of acoustic modes with first-order and fourth-order azimuthal symmetries. Acoustic frequencies up to 1.8 GHz are observed, and the acoustic modes are stimulated above their cut-off frequencies. Angular momentum is transferred between the orbital degrees of freedom of the optical and acoustic waves. The results extend the understanding and formulation of forward Brillouin scattering in optical fibers, and they may find applications in fiber lasers, sensing, non-reciprocal propagation effects, and quantum states manipulation.","PeriodicalId":18069,"journal":{"name":"Light-Science & Applications","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144586498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Chip-to-chip photonic quantum teleportation over optical fibers of 12.3 km 12.3公里光纤上的片对片光子量子隐形传态

Light-Science & Applications Pub Date : 2025-07-09 DOI: 10.1038/s41377-025-01920-z

Dongning Liu, Zhanping Jin, Jingyuan Liu, Xiaotong Zou, Xiaosong Ren, Hao Li, Lixing You, Xue Feng, Fang Liu, Kaiyu Cui, Yidong Huang, Wei Zhang

{"title":"Chip-to-chip photonic quantum teleportation over optical fibers of 12.3 km","authors":"Dongning Liu, Zhanping Jin, Jingyuan Liu, Xiaotong Zou, Xiaosong Ren, Hao Li, Lixing You, Xue Feng, Fang Liu, Kaiyu Cui, Yidong Huang, Wei Zhang","doi":"10.1038/s41377-025-01920-z","DOIUrl":"https://doi.org/10.1038/s41377-025-01920-z","url":null,"abstract":"Quantum teleportation is a crucial function in quantum networks. The implementation of photonic quantum teleportation could be highly simplified by quantum photonic circuits. To extend chip-to-chip teleportation distance, more effort is needed on both chip design and system implementation. In this work, we demonstrate a time-bin-based chip-to-chip photonic quantum teleportation over optical fibers under the scenario of a star-topology quantum network. Three quantum photonic circuits are designed and fabricated on a single chip, each serving specific functions: heralded single-photon generation at the user node, entangled photon pair generation and BSM at the relay node, and projective measurement of the teleported photons at the central node. The unbalanced Mach–Zehnder interferometers (UMZI) for time-bin encoding in these quantum photonic circuits are optimized to reduce insertion losses and suppress noise photons generated on the chip. Besides, an active feedback system is employed to suppress the impact of fiber length fluctuation between the circuits, achieving a stable quantum interference for the BSM in the relay node. As a result, a photonic quantum teleportation over optical fibers of 12.3 km is achieved based on these quantum photonic circuits, showing the potential of chip integration for the development of quantum networks.","PeriodicalId":18069,"journal":{"name":"Light-Science & Applications","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144586499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ultrafast switching of a metasurface quasi-bound state in the continuum via transient optical symmetry breaking 利用瞬态光学对称破缺实现连续介质中超表面准束缚态的超快切换

Light-Science & Applications Pub Date : 2025-07-08 DOI: 10.1038/s41377-025-01885-z

Giulia Crotti, Andrea Schirato, Olesiya Pashina, Olga Sergaeva, Mihail Petrov, Costantino De Angelis, Giuseppe Della Valle

{"title":"Ultrafast switching of a metasurface quasi-bound state in the continuum via transient optical symmetry breaking","authors":"Giulia Crotti, Andrea Schirato, Olesiya Pashina, Olga Sergaeva, Mihail Petrov, Costantino De Angelis, Giuseppe Della Valle","doi":"10.1038/s41377-025-01885-z","DOIUrl":"https://doi.org/10.1038/s41377-025-01885-z","url":null,"abstract":"In photonic structures, bound states in the continuum (BICs) have recently attracted huge interest in both fundamental and applied research. Quasi-BIC leaky modes resulting from in-plane symmetry breaking in metasurfaces are particularly relevant to applications, due to their high quality factor, which scales as the squared inverse of the asymmetry parameter. Here, we theoretically propose an innovative approach to switch on quasi-BICs on sub-picosecond timescales via optically induced symmetry breaking in semiconductor metasurfaces. The desired effect is granted by exploiting the spatial inhomogeneities in the distribution of photo-excited hot carriers at the single meta-atom nanometric scale. In our simulations, the quasi-BIC state manifests itself as an ultra-sharp dip in transmission, emerging upon pump arrival, and disappearing completely within the carriers’ diffusion timescale. Our strategy allows to envision reconfigurable platforms with switchable high-Q resonances, with ultrafast recovery beyond the limits of carrier relaxation, typical of previous approaches.","PeriodicalId":18069,"journal":{"name":"Light-Science & Applications","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144577854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

320 GHz photonic-electronic analogue-to-digital converter (ADC) exploiting Kerr soliton microcombs 利用克尔孤子微梳的320 GHz光电子模数转换器（ADC）

Light-Science & Applications Pub Date : 2025-07-08 DOI: 10.1038/s41377-025-01778-1

Dengyang Fang, Daniel Drayss, Huanfa Peng, Grigory Lihachev, Christoph Füllner, Artem Kuzmin, Pablo Marin-Palomo, Patrick Matalla, Prashanta Kharel, Rui Ning Wang, Johann Riemensberger, Mian Zhang, Jeremy Witzens, J. Christoph Scheytt, Wolfgang Freude, Sebastian Randel, Tobias J. Kippenberg, Christian Koos

{"title":"320 GHz photonic-electronic analogue-to-digital converter (ADC) exploiting Kerr soliton microcombs","authors":"Dengyang Fang, Daniel Drayss, Huanfa Peng, Grigory Lihachev, Christoph Füllner, Artem Kuzmin, Pablo Marin-Palomo, Patrick Matalla, Prashanta Kharel, Rui Ning Wang, Johann Riemensberger, Mian Zhang, Jeremy Witzens, J. Christoph Scheytt, Wolfgang Freude, Sebastian Randel, Tobias J. Kippenberg, Christian Koos","doi":"10.1038/s41377-025-01778-1","DOIUrl":"https://doi.org/10.1038/s41377-025-01778-1","url":null,"abstract":"Kerr soliton microcombs have the potential to disrupt a variety of applications such as ultra-high-speed optical communications, ultra-fast distance measurements, massively parallel light detection and ranging (LiDAR) or high-resolution optical spectroscopy. Similarly, ultra-broadband photonic-electronic signal processing could also benefit from chip-scale frequency comb sources that offer wideband optical emission along with ultra-low phase noise and timing jitter. However, while photonic analogue-to-digital converters (ADC) based on femtosecond lasers have been shown to overcome the jitter-related limitations of electronic oscillators, the potential of Kerr combs in photonic-electronic signal processing remains to be explored. In this work, we demonstrate a microcomb-based photonic-electronic ADC that combines a high-speed electro-optic modulator with a Kerr comb for spectrally sliced coherent detection of the generated optical waveform. The system offers a record-high acquisition bandwidth of 320 GHz, corresponding to an effective sampling rate of at least 640 GSa/s. In a proof-of-concept experiment, we demonstrate the viability of the concept by acquiring a broadband analogue data signal comprising different channels with centre frequencies between 24 GHz and 264 GHz, offering bit error ratios (BER) below widely used forward-error-correction (FEC) thresholds. To the best of our knowledge, this is the first demonstration of a microcomb-based ADC, leading to the largest acquisition bandwidth demonstrated for any ADC so far.","PeriodicalId":18069,"journal":{"name":"Light-Science & Applications","volume":"105 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144577853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On-chip graphene photodetectors with a nonvolatile p–i–n homojunction 具有非易失性p-i-n同质结的片上石墨烯光电探测器

Light-Science & Applications Pub Date : 2025-07-07 DOI: 10.1038/s41377-025-01832-y

Ruijuan Tian, Yong Zhang, Yingke Ji, Chen Li, Xianghu Wu, Jianguo Wang, Shuaiwei Jia, Liang Liu, Mingwen Zhang, Yu Zhang, Qiao Zhang, Zhuang Xie, Zhengdong Luo, Duorui Gao, Yan Liu, Jianlin Zhao, Zhipei Sun, Xuetao Gan

{"title":"On-chip graphene photodetectors with a nonvolatile p–i–n homojunction","authors":"Ruijuan Tian, Yong Zhang, Yingke Ji, Chen Li, Xianghu Wu, Jianguo Wang, Shuaiwei Jia, Liang Liu, Mingwen Zhang, Yu Zhang, Qiao Zhang, Zhuang Xie, Zhengdong Luo, Duorui Gao, Yan Liu, Jianlin Zhao, Zhipei Sun, Xuetao Gan","doi":"10.1038/s41377-025-01832-y","DOIUrl":"https://doi.org/10.1038/s41377-025-01832-y","url":null,"abstract":"Graphene’s unique photothermoelectric (PTE) effect, combined with its compatibility for on-chip fabrication, promises its development in chip-integrated photodetectors with ultralow dark-current and ultrafast speed. Previous designs of on-chip graphene photodetectors required external electrical biases or gate voltages to separate photocarriers, leading to increased power consumption and complex circuitry. Here, we demonstrate a nonvolatile graphene p–i–n homojunction constructed on a silicon photonic crystal waveguide, which facilitates PTE-based photodetection without the need for electrical bias or gate voltages. By designing an air-slotted photonic crystal waveguide as two individual silicon back gates and employing ferroelectric dielectrics with remnant polarization fields, the nonvolatile p–i–n homojunction with a clear gradient of Seebeck coefficient is electrically configured. Hot carriers in the graphene channel generated from the absorption of waveguide evanescent field are separated by the nonvolatile p–i–n homojunction effectively to yield considerable photocurrents. With zero-bias and zero-gate voltage, the nonvolatile graphene p–i–n homojunction photodetector integrated on the optical waveguide exhibits high and flat responsivity of 193 mA W−1 over the broadband wavelength range of 1560–1630 nm and an ultrafast dynamics bandwidth of 17 GHz measured in the limits of our instruments. With the high-performance on-chip photodetection, the nonvolatile graphene homojunction directly constructed on silicon photonic circuits promises the extended on-chip functions of the optoelectronic synapse, in-memory sensing and computing, and neuromorphic computing.","PeriodicalId":18069,"journal":{"name":"Light-Science & Applications","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144568368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Uncertainty-aware Fourier ptychography 不确定性感知傅立叶平面印刷术

Light-Science & Applications Pub Date : 2025-07-07 DOI: 10.1038/s41377-025-01915-w

Ni Chen, Yang Wu, Chao Tan, Liangcai Cao, Jun Wang, Edmund Y. Lam

{"title":"Uncertainty-aware Fourier ptychography","authors":"Ni Chen, Yang Wu, Chao Tan, Liangcai Cao, Jun Wang, Edmund Y. Lam","doi":"10.1038/s41377-025-01915-w","DOIUrl":"https://doi.org/10.1038/s41377-025-01915-w","url":null,"abstract":"Fourier ptychography (FP) offers both wide field-of-view and high-resolution holographic imaging, making it valuable for applications ranging from microscopy and X-ray imaging to remote sensing. However, its practical implementation remains challenging due to the requirement for precise numerical forward models that accurately represent real-world imaging systems. This sensitivity to model-reality mismatches makes FP vulnerable to physical uncertainties, including misalignment, optical element aberrations, and data quality limitations. Conventional approaches address these challenges through separate methods: manual calibration or digital correction for misalignment; pupil or probe reconstruction to mitigate aberrations; or data quality enhancement through exposure adjustments or high dynamic range (HDR) techniques. Critically, these methods cannot simultaneously address the interconnected uncertainties that collectively degrade imaging performance. We introduce Uncertainty-Aware FP (UA-FP), a comprehensive framework that simultaneously addresses multiple system uncertainties without requiring complex calibration and data collection procedures. Our approach develops a fully differentiable forward imaging model that incorporates deterministic uncertainties (misalignment and optical aberrations) as optimizable parameters, while leveraging differentiable optimization with domain-specific priors to address stochastic uncertainties (noise and data quality limitations). Experimental results demonstrate that UA-FP achieves superior reconstruction quality under challenging conditions. The method maintains robust performance with reduced sub-spectrum overlap requirements and retains high-quality reconstructions even with low bit sensor data. Beyond improving image reconstruction, our approach enhances system reconfigurability and extends FP’s capabilities as a measurement tool suitable for operation in environments where precise alignment and calibration are impractical.","PeriodicalId":18069,"journal":{"name":"Light-Science & Applications","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144568369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tunable metafibers: remote spatial focus control using 3D nanoprinted holograms on dual-core fibers 可调谐超纤维：远程空间聚焦控制使用3D纳米打印全息图在双芯光纤

Light-Science & Applications Pub Date : 2025-07-07 DOI: 10.1038/s41377-025-01903-0

Jun Sun, Wenqin Huang, Adrian Lorenz, Matthias Zeisberger, Markus A. Schmidt

{"title":"Tunable metafibers: remote spatial focus control using 3D nanoprinted holograms on dual-core fibers","authors":"Jun Sun, Wenqin Huang, Adrian Lorenz, Matthias Zeisberger, Markus A. Schmidt","doi":"10.1038/s41377-025-01903-0","DOIUrl":"https://doi.org/10.1038/s41377-025-01903-0","url":null,"abstract":"The generation of tunably focused light at remote locations is a critical photonic functionality for a wide range of applications. Here, we present a novel concept in the emerging field of Metafibers that achieves, for the first time, fast, alignment-free, fiber-integrated spatial focus control in a monolithic arrangement. This is enabled by 3D nanoprinted intensity-sensitive phase-only on-fiber holograms, which establish a direct correlation between the intensity distribution in the hologram plane and the focus position. Precise adjustment to the relative power between the modes of a dual-core fiber generates a power-controlled interference pattern within the hologram, enabling controlled and dynamic focus shifts. This study addresses all relevant aspects, including computational optimization, advanced 3D nanoprinting, and tailored fiber fabrication. Experimental results supported by simulations validate the feasibility and efficiency of this monolithic Metafiber platform, which enables fast focus modulation and has transformative potential in optical manipulation, high-speed laser micromachining, telecommunications, and minimally invasive surgery.","PeriodicalId":18069,"journal":{"name":"Light-Science & Applications","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144568364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ultrawideband high density polymer-based spherical array for real-time functional optoacoustic micro-angiography 用于实时功能光声微血管成像的超宽带高密度聚合物球形阵列

Light-Science & Applications Pub Date : 2025-07-07 DOI: 10.1038/s41377-025-01894-y

Pavel V. Subochev, Xosé Luís Deán-Ben, Zhenyue Chen, Maxim B. Prudnikov, Vladimir A. Vorobev, Alexey A. Kurnikov, Anna G. Orlova, Anna S. Postnikova, Alexey V. Kharitonov, Mikhail D. Proyavin, Roman I. Ovsyannikov, Anatoly G. Sanin, Mikhail Y. Kirillin, Francisco Montero de Espinosa, Ilya V. Turchin, Daniel Razansky

{"title":"Ultrawideband high density polymer-based spherical array for real-time functional optoacoustic micro-angiography","authors":"Pavel V. Subochev, Xosé Luís Deán-Ben, Zhenyue Chen, Maxim B. Prudnikov, Vladimir A. Vorobev, Alexey A. Kurnikov, Anna G. Orlova, Anna S. Postnikova, Alexey V. Kharitonov, Mikhail D. Proyavin, Roman I. Ovsyannikov, Anatoly G. Sanin, Mikhail Y. Kirillin, Francisco Montero de Espinosa, Ilya V. Turchin, Daniel Razansky","doi":"10.1038/s41377-025-01894-y","DOIUrl":"https://doi.org/10.1038/s41377-025-01894-y","url":null,"abstract":"Owing to its unique ability to capture volumetric tomographic information with a single light flash, optoacoustic (OA) tomography has recently demonstrated ultrafast imaging speeds ultimately limited by the ultrasound time-of-flight. The method’s scalability and the achievable spatial resolution are yet limited by the narrow bandwidth of piezo-composite arrays currently employed for OA signal detection. Here we report on the first implementation of high-density spherical array technology based on flexible polyvinylidene difluoride films featuring ultrawideband (0.3–40 MHz) sub mm2 area elements, thus enabling real-time multi-scale volumetric imaging with 22–35 µm spatial resolution, superior image fidelity and over an order of magnitude signal-to-noise enhancement compared to piezo-composite equivalents. We further demonstrate five-dimensional (spectroscopic, time-resolved, volumetric) imaging capabilities by visualizing fast stimulus-evoked cerebral oxygenation changes in mice and performing real-time functional angiography of deep human micro-vasculature. The new technology thus leverages the true potential of OA for quantitative high-resolution visualization of rapid bio-dynamics across scales.","PeriodicalId":18069,"journal":{"name":"Light-Science & Applications","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144568366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Water-insensitive NIR-I-to-NIR-I down-shifting nanoparticles enable stable biomarker detection at low power thresholds in opaque aqueous environments 对水不敏感的NIR-I-to-NIR-I下移纳米颗粒能够在不透明的水环境中以低功率阈值稳定地检测生物标志物

Light-Science & Applications Pub Date : 2025-07-03 DOI: 10.1038/s41377-025-01882-2

Dongkyu Kang, Suyeon Kim, Yeongchang Goh, Minseo Kim, Sun-Hak Lee, Jung-Hoon Kwon, Sang Hwan Nam, Joonseok Lee

{"title":"Water-insensitive NIR-I-to-NIR-I down-shifting nanoparticles enable stable biomarker detection at low power thresholds in opaque aqueous environments","authors":"Dongkyu Kang, Suyeon Kim, Yeongchang Goh, Minseo Kim, Sun-Hak Lee, Jung-Hoon Kwon, Sang Hwan Nam, Joonseok Lee","doi":"10.1038/s41377-025-01882-2","DOIUrl":"https://doi.org/10.1038/s41377-025-01882-2","url":null,"abstract":"Luminescence quenching in aqueous environments poses a challenge for practical applications. Lanthanide-doped up-conversion nanoparticles (UCNPs), representative of near-infrared (NIR)-emitting phosphors, typically utilize Yb3+ ions as sensitizers, requiring 980 nm light. This wavelength coincides with the transitions of water molecules, interfering with population dynamics, and continuous irradiation causes unintended heating. Although Nd3+ ions, which absorb at 800 nm, serve as alternative sensitizers, their practical use is limited by low quantum yield (Q.Y.). In this study, we developed water-insensitive down-shifting nanoparticles (WINPs) functioning within the NIR-I range (700–900 nm) to avoid water interference. Characterization through single-particle-level spectroscopy demonstrated water-insensitive properties, with identical powers density and lifetime profiles under both dry and water conditions. The WINPs achieved a high Q.Y. of 22.1 ± 0.9%, allowing operation at a detection limit power 15-fold lower than UCNPs, effectively eliminating background noise and enhancing overall performance. To assess diagnostic potential, we validated WINP-based lateral flow immunoassay (LFA) for detecting avian influenza viruses (AIVs) in 65 opaque clinical samples, achieving 100% sensitivity and an area under the curve (AUC) of 1.000 at only 100 mW cm−2. These findings highlight the potential of WINPs as water-insensitive NIR phosphors that can operate at low power, even in water-rich environments.","PeriodicalId":18069,"journal":{"name":"Light-Science & Applications","volume":"71 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144546918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0