IF 6.4 3区环境科学与生态学

Carbon Resources Conversion Pub Date : 2025-06-01 DOI: 10.1016/j.crcon.2025.100342

Chao Wang , Gang Song , Mengjuan Zhang , Kaixuan Yang , Zhenglin Wang , Xin Jia , Qingya Liu , Liguo Zhou , Zhennan Han , Shurong Wang , Jianguo Bian , Guangwen Xu

{"title":"Fluidized bed two-stage O2/steam gasification of agricultural biomass for low-tar syngas: An industrial-scale verification test","authors":"Chao Wang , Gang Song , Mengjuan Zhang , Kaixuan Yang , Zhenglin Wang , Xin Jia , Qingya Liu , Liguo Zhou , Zhennan Han , Shurong Wang , Jianguo Bian , Guangwen Xu","doi":"10.1016/j.crcon.2025.100342","DOIUrl":"10.1016/j.crcon.2025.100342","url":null,"abstract":"<div><div>In the complete green synthesis technology chain, bio-syngas production remains the “first hurdle”. Especially, the “tar” problem in biomass gasification urgently needs to be solved. Recently, our team, in collaboration with Jinan Huangtai Gas Stove Co., Ltd., completed a 10,000-ton industrial test and technical verification of fluidized bed two-stage O<sub>2</sub>/steam gasification for production of syngas from biomass. The test results showed that the fluidized bed two-stage gasification was operated continuously and stably for over 110 h with various biomass feedstocks. Additionally, the lowest tar content in the produced gas reached 0.58 g/Nm<sup>3</sup>. The fly ash collected from the continuous test contained carbon of about 30 wt%. Thus, the technology was well proved for large-scale biomass gasification and production of syngas in terms of technical feasibility and operational stability.</div></div>","PeriodicalId":52958,"journal":{"name":"Carbon Resources Conversion","volume":"8 2","pages":"Article 100342"},"PeriodicalIF":6.4,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144329621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pockels laser directly driving ultrafast optical metrology Pockels激光直接驱动超快光学计量

Light-Science & Applications Pub Date : 2025-05-30 DOI: 10.1038/s41377-025-01872-4

Shixin Xue, Mingxiao Li, Raymond Lopez-rios, Jingwei Ling, Zhengdong Gao, Qili Hu, Tian Qiu, Jeremy Staffa, Lin Chang, Heming Wang, Chao Xiang, John E. Bowers, Qiang Lin

{"title":"Pockels laser directly driving ultrafast optical metrology","authors":"Shixin Xue, Mingxiao Li, Raymond Lopez-rios, Jingwei Ling, Zhengdong Gao, Qili Hu, Tian Qiu, Jeremy Staffa, Lin Chang, Heming Wang, Chao Xiang, John E. Bowers, Qiang Lin","doi":"10.1038/s41377-025-01872-4","DOIUrl":"https://doi.org/10.1038/s41377-025-01872-4","url":null,"abstract":"<p>The invention of the laser unleashed the potential of optical metrology, leading to numerous advancements in modern science and technology. This reliance on lasers, however, also introduces a bottleneck for precision optical metrology, as it requires sophisticated photonic infrastructure for precise laser-wave control, leading to limited metrology performance and significant system complexity. Here, we take a key step toward overcoming this challenge by demonstrating a Pockels laser with multifunctional capabilities that elevate optical metrology to a new level. The chip-scale laser achieves a narrow intrinsic linewidth down to 167 Hz and a broad mode-hop-free tuning range up to 24 GHz. In particular, it delivers an unprecedented frequency chirping rate of up to 20 EHz/s and an exceptional modulation bandwidth exceeding 10 GHz, both of which are orders of magnitude greater than those of existing lasers. Leveraging this laser, we successfully achieve velocimetry at 40 m/s over a short distance of 0.4 m, and measurable velocities up to the first cosmic velocity at 1 m away—a feat unattainable with conventional ranging approaches. At the same time, we achieve distance metrology with a ranging resolution of <2 cm. Furthermore, for the first time to our knowledge, we implement a dramatically simplified architecture for laser frequency stabilization by directly locking the laser to an external reference gas cell without requiring additional external light control. This approach enables long-term laser stability with a frequency fluctuation of only ±6.5 MHz over 60 min. The demonstrated Pockels laser combines elegantly high laser coherence with ultrafast frequency reconfigurability and superior multifunctional capability. We envision its profound impact across diverse fields including communication, sensing, autonomous driving, quantum information processing, and beyond.</p>","PeriodicalId":18069,"journal":{"name":"Light-Science & Applications","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144176632","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

Scalable miniature on-chip Fourier transform spectrometer for Raman spectroscopy 用于拉曼光谱的可扩展微型片上傅里叶变换光谱仪

Light-Science & Applications Pub Date : 2025-05-30 DOI: 10.1038/s41377-025-01861-7

Sarp Kerman, Xiao Luo, Zuoqin Ding, Zhewei Zhang, Zhuo Deng, Xiaofei Qin, Yuran Xu, Shuhua Zhai, Chang Chen

{"title":"Scalable miniature on-chip Fourier transform spectrometer for Raman spectroscopy","authors":"Sarp Kerman, Xiao Luo, Zuoqin Ding, Zhewei Zhang, Zhuo Deng, Xiaofei Qin, Yuran Xu, Shuhua Zhai, Chang Chen","doi":"10.1038/s41377-025-01861-7","DOIUrl":"https://doi.org/10.1038/s41377-025-01861-7","url":null,"abstract":"<p>Miniaturized spectrometers for Raman spectroscopy have the potential to open up a new chapter in sensing. Raman spectroscopy is essential for material characterization and biomedical diagnostics, however, its weak signal and the need for sub-nanometer resolution pose challenges. Conventional spectrometers, with footprints proportional to optical throughput and resolution, are difficult to integrate into compact devices such as wearables. Waveguide-based Fourier Transform Spectrometers (FTS) enable compact spectrometers, and multi-aperture designs can achieve high throughput for applications such as Raman spectroscopy; however, experimental research in this domain remains limited. In this work, we present a multi-aperture SiN waveguide-based FTS overcoming these limitations and enabling Raman spectroscopy of isopropyl alcohol, glucose, Paracetamol, and Ibuprofen with enhanced throughput. Our spectrometer chip, fabricated on a 200 mm SiN wafer, with 160 edge-coupled waveguide apertures connected to an array of ultra-compact interferometers and a small footprint of just 1.6 mm × 3.2 mm, achieves a spectral range of 40 nm and a resolution of 0.5 nm. Experimental results demonstrate that the least absolute shrinkage and selection operator (LASSO) regression significantly enhances Raman spectrum reconstruction. Our work on waveguide-based spectrometry paves the way for integrating accurate and compact Raman sensors into consumer electronics and space exploration instruments.</p>","PeriodicalId":18069,"journal":{"name":"Light-Science & Applications","volume":"105 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144176644","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

Unveiling asymmetric topological photonic states in anisotropic 2D perovskite microcavities 揭示各向异性二维钙钛矿微腔中的不对称拓扑光子态

Light-Science & Applications Pub Date : 2025-05-29 DOI: 10.1038/s41377-025-01852-8

Emmanouil G. Mavrotsoupakis, Leonidas Mouchliadis, Junhui Cao, Minoas C. Chairetis, Marios E. Triantafyllou-Rundell, Eleni C. P. Macropulos, Giannis G. Paschos, Apostolos Pantousas, Huaying Liu, Alexey V. Kavokin, Hamid Ohadi, Constantinos C. Stoumpos, Pavlos G. Savvidis

{"title":"Unveiling asymmetric topological photonic states in anisotropic 2D perovskite microcavities","authors":"Emmanouil G. Mavrotsoupakis, Leonidas Mouchliadis, Junhui Cao, Minoas C. Chairetis, Marios E. Triantafyllou-Rundell, Eleni C. P. Macropulos, Giannis G. Paschos, Apostolos Pantousas, Huaying Liu, Alexey V. Kavokin, Hamid Ohadi, Constantinos C. Stoumpos, Pavlos G. Savvidis","doi":"10.1038/s41377-025-01852-8","DOIUrl":"https://doi.org/10.1038/s41377-025-01852-8","url":null,"abstract":"<p>Photonic Rashba-Dresselhaus coupling in anisotropic microcavities offers a compelling platform for realizing unconventional topological states with non-zero Berry curvature. In this study, we explore a self-assembled two-dimensional hybrid structure composed of anisotropically oriented organic/inorganic halide perovskite layers confined within a microcavity. The strong optical anisotropies of these perovskite systems, driven by significant refractive index contrasts and robust excitonic resonances at room temperature, enable the emergence of synthetic magnetic fields that mediate photonic and polaritonic interactions. The interplay between polarization-dependent modes and spatial inversion symmetry breaking gives rise to strong photonic Rashba-Dresselhaus spin-orbit coupling, leading to distinct modifications in band topology and energy dispersions. These effects result in the formation of unconventional topological features, including non-zero Berry curvature and off-axis diabolical points, within the photonic and polaritonic bands at room temperature. Our findings reveal the critical role of optical and geometric anisotropies in engineering synthetic gauge fields for light, providing a versatile approach for designing photonic systems with novel topological properties. By leveraging the unique properties of halide perovskites and their ability to support both room-temperature excitons and large birefringence, this work advances the development of polaritonic platforms for applications in topological photonics and spinoptronics.</p>","PeriodicalId":18069,"journal":{"name":"Light-Science & Applications","volume":"209 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144165274","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

OFC: Outside Front Cover OFC：外封面

IF 9.1

Green Chemical Engineering Pub Date : 2025-05-23 DOI: 10.1016/S2666-9528(25)00023-8

引用次数: 0

Outside Back Cover 外封底

IF 9.1

Green Chemical Engineering Pub Date : 2025-05-23 DOI: 10.1016/S2666-9528(25)00032-9

引用次数: 0

Broadband achromatic metalens for high-resolution imaging 用于高分辨率成像的宽带消色差超透镜

Light-Science & Applications Pub Date : 2025-05-22 DOI: 10.1038/s41377-025-01858-2

Yangkyu Kim, Inki Kim

引用次数: 0

Photon-number-resolving detection enables single-photon LiDAR approaching the standard quantum limit 光子数分辨探测使单光子激光雷达接近标准量子极限

Light-Science & Applications Pub Date : 2025-05-22 DOI: 10.1038/s41377-025-01880-4

Feihu Xu

引用次数: 0

In-operando control of sum-frequency generation in tip-enhanced nanocavities 尖端增强纳米腔中和频率产生的操作控制

Light-Science & Applications Pub Date : 2025-05-22 DOI: 10.1038/s41377-025-01855-5

Philippe Roelli, Isabel Pascual Robledo, Iris Niehues, Javier Aizpurua, Rainer Hillenbrand

{"title":"In-operando control of sum-frequency generation in tip-enhanced nanocavities","authors":"Philippe Roelli, Isabel Pascual Robledo, Iris Niehues, Javier Aizpurua, Rainer Hillenbrand","doi":"10.1038/s41377-025-01855-5","DOIUrl":"https://doi.org/10.1038/s41377-025-01855-5","url":null,"abstract":"<p>Sum-frequency generation (SFG) is a second-order nonlinear process widely used for characterizing surfaces and interfaces with monolayer sensitivity. Recently, optical field enhancement in plasmonic nanocavities has enabled SFG with continuous wave (CW) lasers from nanoscale areas of molecules, promising applications like nanoscale SFG spectroscopy and coherent upconversion for mid-infrared detection at visible frequencies. Here, we demonstrate CW SFG from individual nanoparticle-on-mirror (NPoM) cavities, which are resonant at visible frequencies and filled with a monolayer of molecules, when placed beneath a metal scanning probe tip. The tip acts as an efficient broadband antenna, focusing incident CW infrared illumination onto the nanocavity. The cascaded near-field enhancement within the NPoM nanocavity yields nonlinear optical responses across a broad range of infrared frequencies, achieving SFG enhancements of up to 14 orders of magnitude. Further, nanomechanical positioning of the tip allows for in-operando control of SFG by tuning the local field enhancement rather than the illumination intensities. The versatility of tip-enhanced nanocavities allows for SFG studies of a wide range of molecular species in the few-molecule regime without the need for complex nanofabrication. Our results also promise SFG nanoimaging with tips providing strong visible and IR field enhancement at their apex, offering a robust platform for future applications in nonlinear nanooptics.</p>","PeriodicalId":18069,"journal":{"name":"Light-Science & Applications","volume":"77 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144113577","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

Quantum computing predicts particle trajectories in optical tweezers 量子计算预测光镊中的粒子轨迹

Light-Science & Applications Pub Date : 2025-05-22 DOI: 10.1038/s41377-025-01879-x

Da-Wei Wang

引用次数: 0

理学最新文献