Nature Photonics最新文献_第2页

Shrinking time-domain spectroscopy to atomic dimensions 将时域光谱缩小到原子尺寸

IF 32.3 1区物理与天体物理

Nature Photonics Pub Date : 2024-09-04 DOI: 10.1038/s41566-024-01510-2

Susanne Baumann, Sebastian Loth

引用次数: 0

Chiral nonlinear optical inheritance 手性非线性光学继承

IF 32.3 1区物理与天体物理

Nature Photonics Pub Date : 2024-09-04 DOI: 10.1038/s41566-024-01514-y

Etienne Brasselet

引用次数: 0

Real-time detection and discrimination of radioactive gas mixtures using nanoporous inorganic scintillators 使用纳米多孔无机闪烁体对放射性气体混合物进行实时检测和鉴别

IF 35 1区物理与天体物理

Nature Photonics Pub Date : 2024-09-02 DOI: 10.1038/s41566-024-01507-x

Raphael Marie-Luce, Pavlo Mai, Frederic Lerouge, Yannis Cheref, Sylvie Pierre, Benoit Sabot, Frederic Chaput, Christophe Dujardin

{"title":"Real-time detection and discrimination of radioactive gas mixtures using nanoporous inorganic scintillators","authors":"Raphael Marie-Luce, Pavlo Mai, Frederic Lerouge, Yannis Cheref, Sylvie Pierre, Benoit Sabot, Frederic Chaput, Christophe Dujardin","doi":"10.1038/s41566-024-01507-x","DOIUrl":"https://doi.org/10.1038/s41566-024-01507-x","url":null,"abstract":"The nuclear industry’s expansion to encompass carbon-free electricity generation from small modular reactors and nuclear fuel reprocessing necessitates enhanced detection and monitoring of pure beta-emitting radioactive elements such as 3H and 85Kr; this endeavour is crucial for nuclear safety authorities tasked with environmental monitoring. However, the short range of electrons emitted by these gases makes detection challenging. Current methods, such as ionization chambers and liquid scintillation, do not offer at the same time good sensitivity, real-time analysis and ease of implementation. We demonstrate an approach using a gas–solid mixture to overcome these limitations. We synthetized a transparent and scintillating nanoporous material, an aerogel of Y3Al5O12:Ce4+, and achieved real-time detection with an efficiency of 96% for 85Kr and 18% for 3H. The method reaches a sensitivity below 100 mBq per cm3 over 100 s measurement time. We are able to measure simultaneously as mixtures containing both 3H and 85Kr a capability not possible previously. Our results demonstrate a compact and robust detection system for inline measurement of strategic radioactive gases. This combination of concept and method enhances nuclear power plant management and contributes to environmental safeguarding. Beyond the detection issues, this concept opens a wide field of new methods for radionuclide metrology.","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":null,"pages":null},"PeriodicalIF":35.0,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142118091","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

Anti-perovskites with long carrier lifetime for ultralow dose and stable X-ray detection 用于超低剂量和稳定 X 射线探测的长载流子寿命反超晶石

IF 32.3 1区物理与天体物理

Nature Photonics Pub Date : 2024-08-23 DOI: 10.1038/s41566-024-01482-3

Lang Liu, Shi-Yu Liu, Yuanpeng Shi, Cui-Ling Fang, Shan Zhao, Huai-Yi Shen, Ming-Xing Chen, Ze-Jie Wang, Yan Ma, Yan Liu, Yan Feng, Jiang Tang, Heng-Yun Ye, Guangda Niu

{"title":"Anti-perovskites with long carrier lifetime for ultralow dose and stable X-ray detection","authors":"Lang Liu, Shi-Yu Liu, Yuanpeng Shi, Cui-Ling Fang, Shan Zhao, Huai-Yi Shen, Ming-Xing Chen, Ze-Jie Wang, Yan Ma, Yan Liu, Yan Feng, Jiang Tang, Heng-Yun Ye, Guangda Niu","doi":"10.1038/s41566-024-01482-3","DOIUrl":"10.1038/s41566-024-01482-3","url":null,"abstract":"Halide perovskites have shown promising potential for direct X-ray detection due to their high X-ray absorption coefficient, low trap states and convenient fabrication process. However, it is still a challenge to achieve high sensitivity, low dark current and low detection limit in a single material. The deep reason for this is the trade-off between the material’s μτ product and resistivity. Here we report the construction of an organic–inorganic hybrid anti-perovskite ((2-Habch)3Cl(PtI6)) with indirect transition and low orbital symmetry at the band edge to achieve an ultralong intrinsic lifetime and thus break the trade-off. (2-Habch)3Cl(PtI6) achieves an unprecedented long carrier lifetime of >3 ms, leading to a large μτ product of 6.25 × 10−3 cm2 V−1 and high resistivity of 1012 Ω cm, outperforming most X-ray detection materials. These properties enabled the development of X-ray detectors that simultaneously achieve an ultralow dark current of 0.21 nA cm−2, high sensitivity of 1.0 × 104 µC Gyair−1 cm−2, ultralow detection limit of 2.4 nGyair s−1 and excellent operational stability with no observable baseline drift, outperforming state-of-the-art perovskite single-crystal detectors. The rare combination of high performance in almost every figure of merit in the anti-perovskite-based X-ray detector could enable new-generation X-ray detection systems. The researchers synthesize organic–inorganic hybrid inverse perovskites that exhibit excellent carrier lifetime and mobility–lifetime product and high resistivity, enabling stable X-ray detectors with performance arguably outperforming state-of-the-art perovskite single-crystal detectors.","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":null,"pages":null},"PeriodicalIF":32.3,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142042674","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

Deep-blue organic light-emitting diodes for ultrahigh-definition displays 用于超高清显示器的深蓝色有机发光二极管

IF 35 1区物理与天体物理

Nature Photonics Pub Date : 2024-08-19 DOI: 10.1038/s41566-024-01508-w

Tao Hua, Xiaosong Cao, Jingsheng Miao, Xiaojun Yin, Zhanxiang Chen, Zhongyan Huang, Chuluo Yang

{"title":"Deep-blue organic light-emitting diodes for ultrahigh-definition displays","authors":"Tao Hua, Xiaosong Cao, Jingsheng Miao, Xiaojun Yin, Zhanxiang Chen, Zhongyan Huang, Chuluo Yang","doi":"10.1038/s41566-024-01508-w","DOIUrl":"https://doi.org/10.1038/s41566-024-01508-w","url":null,"abstract":"Multiple-resonance thermally activated delayed fluorescence materials have emerged as promising candidates for next-generation ultrahigh-definition displays due to their narrowband emission and triplet-harvesting capability. However, achieving optimal colour purity and device efficiency for blue multiple-resonance thermally activated delayed fluorescence emitters has presented challenges. Here we demonstrate an effective approach to attain superior deep-blue molecules by constructing twisted-boron-/nitrogen-/oxygen-embedded higher-order fused-ring frameworks with fully resonating structures. The optimized emitter exhibits high rigidity and minimized bonding/antibonding character for ultrasharp emission, along with a small singlet–triplet gap and large spin–orbit couplings for rapid spin flip. This combination results in deep-blue emission at 458 nm with a narrow full-width at half-maximum of 12 nm in solution and a reverse intersystem crossing rate constant of 2.29 × 106 s−1, on par with those of heavy-atom-based multiple-resonance thermally activated delayed fluorescence molecules. The related single-unit organic light-emitting diode achieves an external quantum efficiency of 39.2% with colour coordinates of (0.141, 0.050) and a narrow full-width at half-maximum of 14 nm. Furthermore, a two-unit stacked tandem hyperfluorescence organic light-emitting diode achieves an ultrahigh external quantum efficiency of 74.5% with low efficiency roll-off at high luminance values. This performance represents a remarkable balance between efficiency and colour purity in the deep-blue region, marking an important step towards power-efficient ultrawide-colour-gamut displays.","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":null,"pages":null},"PeriodicalIF":35.0,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142002835","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

Perovskite computed tomography imager and three-dimensional reconstruction Perovskite 计算机断层扫描成像仪和三维重建

IF 35 1区物理与天体物理

Nature Photonics Pub Date : 2024-08-16 DOI: 10.1038/s41566-024-01506-y

Yuhong He, Jinmei Song, Mingbian Li, Kostiantyn Sakhatskyi, Weijun Li, Xiaopeng Feng, Bai Yang, Maksym Kovalenko, Haotong Wei

引用次数: 0

Multi-spectral reflection matrix for ultrafast 3D label-free microscopy 用于超快三维无标记显微镜的多光谱反射矩阵

IF 35 1区物理与天体物理

Nature Photonics Pub Date : 2024-08-16 DOI: 10.1038/s41566-024-01479-y

Paul Balondrade, Victor Barolle, Nicolas Guigui, Emeric Auriant, Nathan Rougier, Claude Boccara, Mathias Fink, Alexandre Aubry

{"title":"Multi-spectral reflection matrix for ultrafast 3D label-free microscopy","authors":"Paul Balondrade, Victor Barolle, Nicolas Guigui, Emeric Auriant, Nathan Rougier, Claude Boccara, Mathias Fink, Alexandre Aubry","doi":"10.1038/s41566-024-01479-y","DOIUrl":"https://doi.org/10.1038/s41566-024-01479-y","url":null,"abstract":"Label-free microscopy exploits light scattering to obtain a three-dimensional image of biological tissues. However, light propagation is affected by aberrations and multiple scattering, which drastically degrade the image quality and limit the penetration depth. Multi-conjugate adaptive optics and time-gated matrix approaches have been developed to compensate for aberrations but the associated frame rate is extremely limited for three-dimensional imaging. Here we develop a multi-spectral matrix approach to solve these fundamental problems. On the basis of a sparse illumination scheme and an interferometric measurement of the reflected wave field at multiple wavelengths, the focusing process can be optimized in post-processing for any voxel by addressing independently each frequency component of the reflection matrix. A proof-of-concept experiment shows a three-dimensional image of an opaque human cornea over a 0.1 mm3 field of view at a 290 nm resolution and a 1 Hz frame rate. This work paves the way towards a fully digital microscope allowing real-time, in vivo, quantitative and deep inspection of tissues.","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":null,"pages":null},"PeriodicalIF":35.0,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141992022","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

Author Correction: Sub-femtonewton force sensing in solution by super-resolved photonic force microscopy 作者更正：利用超分辨光子力显微镜感测溶液中的亚微顿力

IF 32.3 1区物理与天体物理

Nature Photonics Pub Date : 2024-08-15 DOI: 10.1038/s41566-024-01518-8

Xuchen Shan, Lei Ding, Dajing Wang, Shihui Wen, Jinlong Shi, Chaohao Chen, Yang Wang, Hongyan Zhu, Zhaocun Huang, Shen S. J. Wang, Xiaolan Zhong, Baolei Liu, Peter John Reece, Wei Ren, Weichang Hao, Xunyu Lu, Jie Lu, Qian Peter Su, Lingqian Chang, Lingdong Sun, Dayong Jin, Lei Jiang, Fan Wang

引用次数: 0

Gate-tunable optical anisotropy in wafer-scale, aligned carbon nanotube films 晶圆级排列碳纳米管薄膜中的栅极可调光学各向异性

IF 35 1区物理与天体物理

Nature Photonics Pub Date : 2024-08-14 DOI: 10.1038/s41566-024-01504-0

Jason Lynch, Evan Smith, Adam Alfieri, Baokun Song, Matthew Klein, Christopher E. Stevens, Cindy Yueli Chen, Chavez FK. Lawrence, Cherie R. Kagan, Honggang Gu, Shiyuan Liu, Lian-Mao Peng, Shivashankar Vangala, Joshua R. Hendrickson, Deep Jariwala

{"title":"Gate-tunable optical anisotropy in wafer-scale, aligned carbon nanotube films","authors":"Jason Lynch, Evan Smith, Adam Alfieri, Baokun Song, Matthew Klein, Christopher E. Stevens, Cindy Yueli Chen, Chavez FK. Lawrence, Cherie R. Kagan, Honggang Gu, Shiyuan Liu, Lian-Mao Peng, Shivashankar Vangala, Joshua R. Hendrickson, Deep Jariwala","doi":"10.1038/s41566-024-01504-0","DOIUrl":"https://doi.org/10.1038/s41566-024-01504-0","url":null,"abstract":"Telecommunications and polarimetry both require the active control of the polarization of light. Currently, this is done by combining intrinsically anisotropic materials with tunable isotropic materials into heterostructures using complicated fabrication techniques owing to the lack of scalable materials that possess both properties. Tunable birefringent and dichromic materials are scarce and rarely available in high-quality thin films over wafer scales. Here we report semiconducting, highly aligned, single-walled carbon nanotubes (SWCNTs) over 4″ wafers with normalized birefringence and dichroism values of 0.09 and 0.58, respectively. The real and imaginary parts of the refractive index of these SWCNT films are tuned by up to 5.9% and 14.3% in the infrared at 2,200 nm and 1,660 nm, respectively, using electrostatic doping. Our results suggest that aligned SWCNTs are among the most anisotropic and tunable optical materials known and open new avenues for their application in integrated photonics and telecommunications.","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":null,"pages":null},"PeriodicalIF":35.0,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141980915","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

Observation of Floquet states and their dephasing in colloidal nanoplatelets driven by visible pulses 观察可见光脉冲驱动的胶体纳米微粒中的 Floquet 状态及其相消现象

IF 35 1区物理与天体物理

Nature Photonics Pub Date : 2024-08-13 DOI: 10.1038/s41566-024-01505-z

Yuxuan Li, Yupeng Yang, Yuan Liu, Jingyi Zhu, Kaifeng Wu

{"title":"Observation of Floquet states and their dephasing in colloidal nanoplatelets driven by visible pulses","authors":"Yuxuan Li, Yupeng Yang, Yuan Liu, Jingyi Zhu, Kaifeng Wu","doi":"10.1038/s41566-024-01505-z","DOIUrl":"https://doi.org/10.1038/s41566-024-01505-z","url":null,"abstract":"Coherent interaction between light and matter generates photon-dressed replicas of the original electronic levels (that is, Floquet states). This opens up a so-called field of Floquet engineering that applies electromagnetic fields to create new non-equilibrium phases of solid-state materials. The direct observation of such Floquet states, which often requires low-temperature, high-vacuum housing of the interrogated materials and low-energy infrared photons or microwaves as the driver, has been challenging. Here we report the observation of Floquet states in CdSe nanoplatelets, which are the colloidal analogue of quantum wells, under ambient conditions using femtosecond transient absorption. A sub-bandgap visible photon dresses a heavy-hole state (|hh1〉) to a Floquet state (|hh1 + ℏωL〉) that can hybridize with the first quantized electron state (|e1〉). This enables us to probe the Floquet state using a near-infrared photon through its transition to the second quantized electron state (|e2〉). Dephasing of the Floquet state into the real population of |e1〉 is also directly observed with a dephasing time of a few hundred femtoseconds, which is well reproduced by our density matrix simulations.","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":null,"pages":null},"PeriodicalIF":35.0,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141974152","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