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Luminescence: a new perspective for investigating perovskite precursors

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Science China Materials 2024年

作者： haofeng Zheng Shaocong Hou School of Electrical Engineering and Automation Wuhan University Wuhan University Shenzhen Research Institute

In the past two decades, perovskite materials have made significant progress in optoelectronic semiconductors, emerging as formidable candidates for the next generation of commercial solar cells, light-emitting diodes(LEDs), and *** the fundamental solution chemistry and photophysics in solution-processed perovskite devices is crucial for comprehending to achieve highly efficient optoelectronic devices.

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Preliminary report of coseismic surface rupture(part)of Türkiye's M_(W)7.8 earthquake by remote sensing interpretation

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Earthquake Research Advances 2024年第1期4卷 4-13页

作者： Yali Guo haofeng Li Peng Liang Renwei Xiong Chaozhong Hu Yueren Xu Key Laboratory of Earthquake Prediction Institute of Earthquake ForecastingChina Earthquake AdministrationBeijing100036China

Both M_(W) 7.8 and M_(W) 7.5 earthquakes occurred in southeastern Türkiye on February 6,2.2.,resulting in numerous buildings collapsing and serious *** the distribution of coseismic surface ruptures and secondary disasters surrounding the epicentral area is important for post-earthquake emergency and disaster ***-resolution Maxar and GF-2.satellite data were used after the events to extract the location of the rupture surrounding the first epicentral *** results show that the length of the interpreted surface rupture zone(part of)is approximately 75 km,with a coseismic sinistral dislocation of 2.3 m near the epicenter;however,this reduced to zero at the tip of the southwest section of the East Anatolia Fault ***,dense soil liquefaction pits were triggered along the rupture *** events are in the western region of the Eurasian Seismic Belt and result from the subduction and collision of the Arabian and African Plates toward the Eurasian *** western region of the Chinese mainland and its adjacent areas are in the eastern section of the Eurasian Seismic Belt,where seismic activity is controlled by the collision of the Indian and Eurasian *** China and Türkiye have independent tectonic histories.

关键词： 2.2. Türkiye M_(w)7.8 earthquake Coseismic surface rupture East anatolian fault zone Eurasian seismic zone Remote sensing interpretation

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Analysis of a Type Ⅱ Snowstorm Process in the Early Spring of 2.2. in Ulanqab

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Meteorological and Environmental Research 2024年第2期15卷 4-9页

作者： haofeng GUO Ulanqab Meteorological Bureau Ulanqab 012000China

Based on the observation data of meteorological stations,Doppler radar observation data of Ulanqab City,and ERA-5 reanalysis data,a snowstorm process in Ulanqab City from March 17 to 18,2.2. was *** results show that this was a type Ⅱ snowstorm process generated under the joint influence of upper trough and ground low inverted trough and frontal *** main period of snowfall can be divided into two time stages,and the total snowfall was more in the south and less in the north,which was consistent with that of average specific humidity *** vapor conditions provided by strong water vapor transport and convergence,strong upward movement shown by large vertical velocity field,and the suction action of high-and low-layer divergence and convergence were the reasons for the hourly heavy snowfall on the 18^(th).During the process,radar echoes were mainly sheet-shaped,and composite reflectivity was 15-2. dBZ in most *** zero speed line in the first period was positively"S"-shaped,and there was warm advection and southwest *** the morning of the 18^(th),after the cold front transited the city,Ulanqab City was gradually controlled by northwest wind,and the snow tended to end.

关键词： TypeⅡsnowstorm Influencing system Diagnostic analysis Radar echo characteristics

Beyond Conventional Degradation:Catalytic Solutions for Polyolefin Upcycling

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CCS Chemistry 2024年第2期6卷 313-333页

作者： Lan Gan Zhongwen Dong haofeng Xu Huidong Lv Guixia Liu Fan Zhang Zheng Huang State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai 200032 School of Chemistry and Material Sciences Hangzhou Institute of Advanced StudyHangzhou 310024 National Engineering Laboratory of Eco-Friendly Polymeric Materials(Sichuan) College of ChemistrySichuan UniversityChengdu 610064

Polyolefins(POs,i.e.,polyethylenes,ethylene/α-olefin copolymers,and polypropylenes)are the most ubiquitous synthetic macromolecular materials in modern *** widespread use and low recovery rate after extensive usage have caused significant resource waste and environmental *** recycling of POs provides an efficient approach to unravelling the polymer chain to various ***,conventional chemical recycling methods,including pyrolysis,hydrocracking,and oxidation,require high-energy input(typically>500℃)and/or the use of environmentally unfriendly chemicals,leading to complex product *** this minireview,based on recent representative works,we summarize and highlight catalytic strategies addressing these issues in PO recycling from two perspectives:(1)employing advanced catalysts or technique designs to overcome the challenges in conventional chemical deconstruction approaches;and(2.developing novel tandem/cascade catalytic systems for highly selective PO upcycling under relatively mild *** hope that this minireview will help researchers better understand the state of the art of PO chemical recycling and inspire more innovative and efficient ideas for this fast-developing field.

关键词： catalytic strategies chemical recycling deconstruction polyolefins upcycling

Suspended nanomembrane silicon photonic integrated circuits

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Chip 2024年第3期3卷 29-35页

作者： Rongxiang Guo Qiyue Lang Zunyue Zhang haofeng Hu Tiegen Liu Jiaqi Wang Zhenzhou Cheng School of Precision Instrument and Opto-electronics Engineering Tianjin UniversityTianjin 300072China Key Laboratory of Opto-electronic Information Technology Ministry of EducationTianjin 300072China College of Physics and Optoelectronic Engineering Shenzhen UniversityShenzhen 518060China Georgia Tech-Shenzhen Institute Tianjin UniversityShenzhen 518055China Department of Chemistry The University of TokyoTokyo 113-0033Japan School of Physics and Electronic Engineering Xinjiang Normal UniversityUrumqi 830054China

Leveraging the low linear and nonlinear absorption loss of silicon at mid-infrared(mid-IR)wavelengths,silicon photonic integrated circuits(PICs)have attracted significant attention for mid-IR applications including optical sensing,spectroscopy,and nonlinear ***,mid-IR silicon PICs typically show moderate performance compared to state-of-the-art silicon photonic devices operating in the telecommunication ***,we proposed and demonstrated suspended nanomembrane silicon(SNS)PICs with light-guiding within deep-subwavelength waveguide thickness for operation in the short-wavelength mid-IR *** demonstrated key building components,namely,grating couplers,waveguide arrays,micro-resonators,etc.,which exhibit excellent performances in bandwidths,back reflections,quality factors,and fabrication ***,the results show that the proposed SNS PICs have high compatibility with the multi-project wafer foundry *** study provides an unprecedented platform for mid-IR integrated photonics and applications.

关键词： Silicon photonics Suspended waveguide Mid-infrared Photonic integrated circuits Subwavelength grating

Simultaneously detecting transversal and longitudinal displacement with the dielectric metasurface

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Chinese Optics Letters 2024年第2期22卷 109-113页

作者：张植宇匡程辉臧昊峰鲁拥华王沛 Department of Optics and Optical Engineering University of Science and Technology of ChinaHefei 230026China Advanced Laser Technology Laboratory of Anhui Province Hefei 230026China

The compact,sensitive,and multidimensional displacement measurement device plays a crucial role in semiconductor manufacture and high-resolution optical *** metasurface offers a promising solution to develop high-precision displacement *** this work,we proposed and experimentally demonstrated a two-dimensional displacement(XZ)measurement device by a dielectric *** transversal and longitudinal displacements of the metasurface can be obtained by the analysis of the interference optical intensity that is generated by the deflected light beams while the metasurface is under linearly polarized *** experimentally demonstrated that displacements down to 5.4 nm along the x-axis and 0.12.m along the z-axis can be resolved with a 900μm×900μm *** work opens up new possibilities to develop a compact high-precision multidimensional displacement sensor.

关键词： metasurface transversal and longitudinal displacement measurement

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多措并举标本兼治有力有效做好基督教工作

中国宗教 2024年第5期 33-34页

作者： 1.中共山东省委统战部 2.山东省民宗委中共山东省委统战部山东省民宗委

近年来,山东省结合实际,采取有力举措,扎实做好基督教工作,有效推进基督教中国化山东实践,全省基督教领域呈现出和谐稳定的良好局面。一、严格落实宗教工作责任制,着力构建齐抓共管的宗教事务管理格局山东严格落实各级各部门宗教工作责... 详细信息

近年来,山东省结合实际,采取有力举措,扎实做好基督教工作,有效推进基督教中国化山东实践,全省基督教领域呈现出和谐稳定的良好局面。一、严格落实宗教工作责任制,着力构建齐抓共管的宗教事务管理格局山东严格落实各级各部门宗教工作责任制,通过强化组织保障“小切口”,推动基层宗教事务管理“大文章”。一是压实主体责任。将宗教工作纳入各级党委重要议事日程,构建起各级党委齐抓共管的工作体制。

关键词：基督教中国化齐抓共管宗教事务管理主体责任工作责任制和谐稳定严格落实标本兼治

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永恒的丰碑：“大陈岛垦荒红色档案”建设侧记

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浙江档案 2024年第5期 10-11+16页

作者： 1.台州市档案馆 2.台州市椒江区档案馆台州市档案馆台州市椒江区档案馆

在台州市椒江区档案馆的特藏馆内，挂着一幅由团中央在1956年赠给温州青年志愿垦荒队的旗帜“建设伟大祖国的大陈岛”，这面旗帜承载着一件件珍贵的档案史料和一个个生动的历史场景，大陈岛激情燃烧的垦荒史、波澜壮阔的发展史，宛如画...

在台州市椒江区档案馆的特藏馆内，挂着一幅由团中央在1956年赠给温州青年志愿垦荒队的旗帜“建设伟大祖国的大陈岛”，这面旗帜承载着一件件珍贵的档案史料和一个个生动的历史场景，大陈岛激情燃烧的垦荒史、波澜壮阔的发展史，宛如画卷般展现在眼前。“大陈岛垦荒精神”是台州的城市精神，是这座城市发展生生不息的力量源泉。1956年到1960年，温州、台州两地467名青年陆续上岛支援建设，他们卷起裤管，咬紧牙关，用血和汗锻炼成了一个个生产能手，在荒岛上发展出种植业、畜牧业和海洋养殖业。一代垦荒人用青春和汗水孕育了“艰苦创业、奋发图强、无私奉献、开拓创新”

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上海国资 2024年第4期 9-10页

作者： 1.新华社 2.国家数据局新华社国家数据局

国务院国资委全面深化改革领导小组召开2.2.年第一次全体会议2.2.年3月2.日，国务院国资委全面深化改革领导小组召开2.2.年第一次全体会议。会议指出，今年是深入实施国有企业改革深化提升行动承上启下的关键一年，要聚焦重点难点任务...

国务院国资委全面深化改革领导小组召开2.2.年第一次全体会议2.2.年3月2.日，国务院国资委全面深化改革领导小组召开2.2.年第一次全体会议。会议指出，今年是深入实施国有企业改革深化提升行动承上启下的关键一年，要聚焦重点难点任务全力攻坚，紧盯重点任务和关键时点，全力以赴抓好各项任务落实。

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