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Etching-free pixel definition in InGaN green micro-LEDs

Light(Science & Applications) 2024年第8期13卷 1655-1665页

作者： Zhiyuan Liu yi Lu Haicheng Cao Glen Isaac Maciel Garcia Tingang Liu Xiao tang Na Xiao Raul Aguileta Vazquez Mingtao Nong Xiaohang Li Advanced Semiconductor Laboratory Electrical and Computer Engineering ProgramCEMSE DivisionKing Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Kingdom of Saudi Arabia

The traditional plasma etching process for defining micro-LED pixels could lead to significant sidewall *** near sidewall regions act as non-radiative recombination centers and paths for current leakage,significantly deteriorating device *** this study,we demonstrated a novel selective thermal oxidation(STO)method that allowed pixel definition without undergoing plasma damage and subsequent dielectric *** annealing in ambient air oxidized and reshaped the LED structure,such as p-layers and InGaN/GaN multiple quantum ***,the pixel areas beneath the pre-deposited SiO_(2)layer were selectively and effectively *** was demonstrated that prolonged thermal annealing time enhanced the insulating properties of the oxide,significantly reducing LED leakage ***,applying a thicker SiO_(2)protective layer minimized device resistance and boosted device efficiency *** the STO method,InGaN green micro-LED arrays with 50-,30-,and 10-μm pixel sizes were manufactured and *** results indicated that after 4 h of air annealing and with a 3.5-μm SiO_(2)protective layer,the 10-μm pixel array exhibited leakage currents density 1.2×10^(-6)A/cm^(2)at-10 V voltage and a peak on-wafer external quantum efficiency of~6.48%.This work suggests that the STO method could become an effective approach for future micro-LED manufacturing to mitigate adverse LED efficiency size effects due to the plasma etching and improve device ***-LEDs fabricated through the STO method can be applied to micro-displays,visible light communication,and optical interconnect-based *** planar pixel geometry will provide more possibilities for the monolithic integration of driving circuits with ***,the STO method is not limited to micro-LED fabrication and can be extended to design other III-nitride devices,such as photodetectors,laser diodes,high-electron-mobility transistors

关键词： annealing protective quantum

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Revealing precipitation behavior and mechanical response of wire-arc directed energy deposited Mg-Gd-Y-Zr alloy by tailoring aging procedures

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International Journal of Extreme Manufacturing 2024年第4期6卷 176-200页

作者： Xinzhi Li Xuewei Fang Zhiyan Zhang Shahid Ghafoor Ruikai Chen yi Liu Kexin tang Kai Li Minghua Ma Jiahao Shang Ke Huang State Key Laboratory for Manufacturing Systems Engineering School of Mechanical EngineeringXi'an Jiaotong UniversityXi'an 710049 ShaanxiPeople's Republic of China

Mg-Gd-Y-Zr alloy,as a typical magnesium rare-earth(Mg-RE)alloy,is gaining popularity in the advanced equipment manufacturing fields owing to its noticeable age-hardening properties and high specific ***,it is extremely challenging to prepare wrought components with large dimensions and complex shapes because of the poor room-temperature processability of Mg-Gd-Y-Zr ***,we report a wire-arc directed energy deposited(DED)Mg-10.45Gd-2.27Y-0.52Zr(wt.%,GW102K)alloy with high RE content presenting a prominent combination of strength and ductility,realized by tailored nanoprecipitates through an optimized heat treatment ***,the solution-treated sample exhibits excellent ductility with an elongation(EL)of(14.6±0.1)%,while the aging-treated sample at 200°C for 58 h achieves an ultra-high ultimate tensile strength(UTS)of(371±1.5)***,the aging-treated sample at 250°C for 16 h attains a good strength-ductility synergy with a UTS of(316±2.1)MPa and a EL of(8.5±0.1)%.Particularly,the evolution mechanisms of precipitation response induced by various aging parameters and deformation behavior caused by nanoprecipitates type were also systematically *** excellent ductility resulted from coordinating localized strains facilitated by active slip *** the ultra-high strength should be ascribed to the dense nano-β'hampering dislocation ***,the shearable nano-β1 contributed to the good strength-ductility *** work thus offers insightful understanding into the nanoprecipitates manipulation and performance tailoring for the wire-arc DED preparation of large-sized Mg-Gd-Y-Zr components with complex geometries.

关键词： wire-arc directed energy deposition Mg-Gd-Y-Zr alloy precipitation response prominent strength-ductilitycombination deformation mechanism

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A nitric oxide-triggered hydrolysis reaction to construct controlled self-assemblies with complex topologies

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Science China Chemistry 2024年第4期67卷 1289-1299页

作者： Wenzhuo Chen Yuping tang Shuai Chen Zipei Chen Jia He Hongbin Huo Juan Zhang Jiajia Li Fei Yan wei Tian Laboratory of Shaanxi Administration of Traditional Chinese Medicine for TCM Compatibility Shaanxi Key Laboratory of Chinese Medicine Fundamentals and New Drugs ResearchCollege of PharmacyShaanxi University of Chinese MedicineXianyang 712046China Shaanxi Key Laboratory of Macromolecular Science and Technology Xi’an Key Laboratory of Hybrid Luminescent Materials and Photonic DeviceMOE Key Laboratory of Material Physics and Chemistry under Extraordinary ConditionsSchool of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Department of Polymeric Materials School of Materials Science and EngineeringTongji UniversityShanghai 201804China

Hydrolysis reactions are capable of directing the non-equilibrium assembly of biomolecular scaffolds to realize sophisticated structures and functions in natural ***,utilizing the proper hydrolysis reactions to construct controlled assemblies with complex topologies is still an arduous challenge in artificial systems and needs to be ***,we report a nitric oxide(NO)-triggered slow hydrolysis strategy for the controlled construction of biomimetic supramolecular toroids(STs),thus realizing their visualization of intermediate structures and regulation of geometry *** presented protocol harnesses hydrolysis reactions to control of non-equilibrium self-assembly processes for the construction of self-assemblies with complex topologies successfully,which sheds light on how the hydrolysis reaction rate can modulate the kinetic pathway of assembly,thus realizing the artificial establishment of bio-inspired hierarchical structures.

关键词： supramolecular toroids controlled self-assembly nitic oxide-triggered hydrolysis pathway regulation

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Removal and fluorescence detection of antibiotics from wastewater by layered double oxides/metal-organic frameworks with different topological configurations

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Chinese Chemical Letters 2024年第8期35卷 401-405页

作者： Zhiqiang Liu Qiang Gao wei Shen Meifeng Xu Yunxin Li weilin Hou Hai-wei Shi Yaozuo Yuan Erwin Adams Hian Kee Lee Sheng tang School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China National Medical Products Administration Key Laboratory for Impurity Profile of Chemical Drugs Nanjing 210019China Chemical Drug Inspection Laboratory 2 Jiangsu Institute for Food and Drug ControlNanjing 210019China Department of Pharmaceutical and Pharmacological Sciences Pharmaceutical AnalysisKU LeuvenHerestraat 49O&N2PB 923Leuven B-3000Belgium Department of Chemistry National University of Singapore3 Science Drive 3Singapore 117543Singapore

Owing to the serious potential side-effects on the environment and human health,the rapid detection and removal of antibiotics have become an important research *** this work,four zinc-based metal-organic frameworks(MOFs)with different functional groups,i.e.,Zn-MOF,Zn-MOF-CH_(3),Zn-MOF-NO_(2),Zn-MOF-COOH,were utilized for the construction of LDO/MOF composite materials with a nickel-iron-cobalt-based layered double oxide,*** results showed that the LDO/MOF composites not only had high sensitivity in detecting sulfonamide and quinolone antibiotics,but also had an appreciable ability to adsorb them from *** maximum adsorption capacities of all the four types of LDO@Zn-MOFs to all antibiotics can at least reach 150 mg/g,and the limits of detection in relation to all four antibiotics were at least as low as 100μg/*** work suggested the dual-function extraction performance can be attributed to the synergistic effects between the LDO and the ***,the strong ferromagnetism derived from the LDO provided great convenience for the separation and regeneration of the LDO/MOF composites.

关键词： Light-emitting metal-organic frameworks Layered double oxides Antibiotics Topological configurations Fluorescence detection

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Sandwich-type composited solid polymer electrolytes to strengthen the interfacial ionic transportation and bulk conductivity for all-solid-state lithium batteries from room temperature to 120℃

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Journal of Energy Chemistry 2024年第8期95卷 288-295,I0007页

作者： Jiewen Tan Zhen Wang Jiawu Cui Zhanhui Jia Wensheng Tian Chao Wu Chengxin Peng Chengyong Shu Kang Yang wei tang School of Chemical Engineering and Technology Xi'an Jiaotong UniversityXi'an 710049ShaanxiChina Center for Advancing Materials Performance from the Nanoscale(CAMP-Nano) State Key Laboratory for Mechanical Behavior of MaterialsXi'an Jiaotong UniversityXi'an 710049ShaanxiChina State Key Laboratory of Space Power-sources Technology Shanghai Institute of Space Power-SourcesShanghai 200245China School of Materials Science and Engineering University of Shanghai for Science and TechnologyShanghai 200093China Top-Energy Digital Manufacturing Technologies(Xi'an)Co. Ltd.Xi'an 710100ShaanxiChina

The insurmountable charge transfer impedance at the Li metal/solid polymer electrolytes(SPEs)interface at room temperature as well as the ascending risk of short circuits at the operating temperature higher than the melting point,dominantly limits their applications in solid-state batteries(SSBs).Although the inorganic filler such as CeO_(2)nanoparticle content of composite solid polymer electrolytes(CSPEs)can significantly reduce the enormous charge transfer impedance at the Li metal/SPEs interface,we found that the required content of CeO_(2)nanoparticles in SPEs varies for achieving a decent interfacial charge transfer impedance and the bulk ionic conductivity in *** this regard,a sandwich-type composited solid polymer electrolyte with a 10%CeO_(2)CSPEs interlayer sandwiched between two 50%CeO_(2)CSPEs thin layers(sandwiched CSPEs)is constructed to simultaneously achieve low charge transfer impedance and superior ionic conductivity at 30℃.The sandwiched CSPEs allow for stable cycling of Li plating and stripping for 1000 h with 129 mV polarized voltage at 0.1 mA cm^(-2)and 30℃.In addition,the LiFePO_(4)/Sandwiched CSPEs/Li cell also exhibits exceptional cycle performance at 30℃and even elevated120℃without short *** multi-layered CSPEs with optimized contents of the inorganic fillers can be an efficient method for developing all solid-state PEO-based batteries with high performance at a wide range of temperatures.

关键词： PEO-based solid electrolytes CeO_(2)nanoparticles Charge transfer impedance Sandwich-type composite electrolytes All-solid-state Li metal batteries

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Dietary copper improves intestinal structural integrity in juvenile grass carp (Ctenopharyngodon idella) probably related to its increased intestinal antioxidant capacity and apical junction complex

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ANIMAL NUTRITION 2024年第3期18卷 96-106页

作者： Ma, Rui Feng, Lin Wu, Pei Liu, Yang Ren, Hong-Mei Jin, Xiao-Wan Li, Shu-wei tang, Ling Zhou, Xiao-Qiu Jiang, wei-Dan Sichuan Agr Univ Anim Nutr Inst Chengdu 611130 Peoples R China Sichuan Agr Univ Fish Nutr & Safety Prod Univ Key Lab Sichuan Prov Chengdu 611130 Peoples R China Minist Agr & Rural Affairs Minist Educ Key Lab Anim Dis Resistance Nutr Key Lab Sichuan Prov Chengdu 611130 Peoples R China Sichuan Animtech Feed Co Ltd Anim Nutr Inst Sichuan Acad Anim Sci Chengdu 610066 Peoples R China

This research evaluated the effects of copper (Cu) on intestinal antioxidant capacity and apical junctional complex (AJC) in juvenile grass carp. A total of 1080 healthy juvenile grass carp (11.16 +/- 0.01 g) were fed six diets including different dosages of Cu, namely 0, 2, 4, 6, 8 mg/kg (Cu citrate [CuCit] as Cu source) and 3 mg/kg (CuSO4 center dot 5H(2)O as Cu source). The trial lasted for 9 weeks. The findings revealed that dietary optimal Cu supplementation (2.2 to 4.1 mg/kg) promoted intestinal growth, including intestinal length, intestinal length index, intestinal weight, and intestinal somatic index (P 0.05). On the other hand, optimal Cu increased intestinal tight junction (TJ) proteins (except for claudin 15b) and adherens junction (AJ) proteins (E-cadherin, alpha-catenin, beta-catenin, nectin and afadin) mRNA levels (P weight to final weight (from 11 to 173 g) was determined to be 4.14 and 4.12 mg/kg diet, respectively. This work may provide a theoretical foundation for identifying putative Cu regulation pathways on fish intestinal he

关键词： Copper Ctenopharyngodon idella Structural integrity Intestine NF-KAPPA-B GROWTH-PERFORMANCE ENZYME-ACTIVITIES DIAMINE OXIDASE IMMUNE FUNCTION DEFICIENCY SUPPLEMENTATION REQUIREMENT NRF2 PHOSPHORUS

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Probing quantum causality with geometric asymmetry in spatial-temporal correlations

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Science China(Information Sciences) 2024年第9期67卷 294-305页

作者： Yu MENG Zheng-Hao LIU Zhikuan ZHAO Peng yiN yi-Tao WANG wei LIU Zhi-Peng LI Yuan-Ze YANG Zhao-An WANG Jin-Shi XU Shang YU Jian-Shun tang Chuan-Feng LI Guang-Can GUO CAS Key Laboratory of Quantum Information University of Science and Technology of China CAS Center for Excellence in Quantum Information and Quantum Physics University of Science and Technology of China Department of Computer Science Eidgen?ssische Technische Hochschule Zürich Hefei National Laboratory Department of Physics Imperial College London Research Center for Quantum Sensing Zhejiang Lab

Causation promotes the understanding of correlation to an advanced stage by elucidating its underlying mechanism. Although statisticians have specified the possible causal relations among correlations,inferring causal structures is impossible from only the observed correlations in the classical world. Quantum correlations encapsulating the most defining aspects of quantum physics have taken a new turn for the causal inference problem — the two-point spatial and temporal quantum correlations with observationally discernible characteristics correspond exactly to the two most basic causal structures. However, a direct causal interpretation for quantum correlations has only been established in very limited cases. Here, we explore to what extent quantum correlations promote causal inference. Theoretically, we have found that the distinguishable causal regime of two-point Pauli correlations can be expanded from a single value to an asymmetric interval, and the causal structures determining the quantum correlations can be interpreted by a simple distance criterion. Experimentally, we have devised and implemented a versatile non-unital quantum channel in an optical architecture to directly observe such an asymmetric interval. The setup enabled quantum causal inference without any requirement of active intervention, which is impossible in the classical realm. Our work facilitates the identification of causal links among quantum variables and provides insight into characterizing causation and spatial-temporal correlation in quantum mechanics.

关键词： causality quantum information quantum channel channel-state duality non-unital channel

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Thermally Conductive and UV-EMI Shielding Electronic Textiles for Unrestricted and Multifaceted Health Monitoring

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Nano-Micro Letters 2024年第10期16卷 149-162页

作者： yidong Peng Jiancheng Dong Jiayan Long Yuxi Zhang Xinwei tang Xi Lin Haoran Liu Tuoqi Liu wei Fan Tianxi Liu Yunpeng Huang Key Laboratory of Synthetic and Biological Colloids Ministry of EducationSchool of Chemical and Material EngineeringJiangnan UniversityWuxi 214122People's Republic of China

Skin-attachable electronics have garnered considerable research attention in health monitoring and artificial intelligence domains,whereas susceptibility to elec-tromagnetic interference(EMI),heat accumulation issues,and ultraviolet(UV)-induced aging problems pose significant constraints on their potential ***,an ultra-elas-tic,highly breathable,and thermal-comfortable epidermal sensor with exceptional UV-EMI shielding performance and remarkable thermal conductivity is developed for high-fidelity monitoring of multiple human electrophysiological *** filling the elastomeric microfibers with thermally conductive boron nitride nanoparticles and bridging the insulating fiber interfaces by plating Ag nanoparticles(NPs),an interwoven thermal con-ducting fiber network(0.72 W m^(-1) K^(-1))is constructed benefiting from the seamless thermal interfaces,facilitating unimpeded heat dissipation for comfort skin *** excitingly,the elastomeric fiber substrates simultaneously achieve outstanding UV protection(UPF=143.1)and EMI shielding(SET>65,X-band)capabilities owing to the high electrical conductivity and surface plasmon resonance of Ag ***,an electronic textile prepared by printing liquid metal on the UV-EMI shielding and thermally conductive nonwoven textile is finally utilized as an advanced epidermal sensor,which succeeds in monitoring different electrophysiological signals under vigorous electromagnetic *** research paves the way for developing protective and environmentally adaptive epidermal electronics for next-generation health regulation.

关键词： Skin electronics Thermal regulating textiles Electromagnetic interference shielding Ultraviolet proof Health monitoring

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An economic way to achieve all-weather CO2 reduction

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National Science Review 2024年第3期11卷 46-47页

作者： Junwang tang Department of Chemical Engineering University College London

Utilising solar power to convert carbon dioxide（CO2） into hydrocarbon fuels presents an eco-friendly method to address dependence on fossil fuels and contribute to a net-zero CO2emission goal[1,2].

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基于仿射不变算子的无人机多光谱影像匹配算法

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吉林大学学报（工学版） 2024年第7期54卷 2080-2085页

作者：唐毅潘杨郜明易虹辰韦安琦苏州科技大学环境科学与工程学院江苏苏州215009 苏州科技大学城市生活污水资源化利用技术国家地方联合工程实验室江苏苏州215009 四川大学机械工程学院成都610065

针对传统的无人机多光谱影像匹配算法存在匹配精度不高、匹配准确度不高、整体效果不佳等问题,提出了一种基于仿射不变算子的无人机多光谱影像匹配算法。首先,通过直方图均衡方法对无人机多光谱影像进行增强处理并通过仿射不变算子提取... 详细信息

针对传统的无人机多光谱影像匹配算法存在匹配精度不高、匹配准确度不高、整体效果不佳等问题,提出了一种基于仿射不变算子的无人机多光谱影像匹配算法。首先,通过直方图均衡方法对无人机多光谱影像进行增强处理并通过仿射不变算子提取无人机多光谱影像的仿射不变区域;其次,通过多尺度乘积LoG方法完成无人机多光谱影像角点检测及特征点提取;最后,使用形状描述算子描述影像特征点,并利用高斯加权距离算法完成最终的影像匹配。实验结果表明,本文方法的无人机多光谱影像匹配精确度更高、误差更小、整体效果更佳。

关键词：仿射不变算子无人机多光谱影像图像匹配特征点提取

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