检索结果-南通市图书馆

Femtosecond Time-Resolved Spectroscopic Photoemission Electron Microscopy for Probing Ultrafast Carrier Dynamics in Heterojunctions

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Physics 2019年第4期32卷 399-405,I0002页

作者： Bo-han Li Guan-hua Zhang Yu Liang Qun-qing Hao Ju-long Sun Chuan-yao Zhou You-tian Tao Xue-ming Yang Ze-feng Ren State Key Laboratory of Molecular Reaction Dynamics Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China Key Laboratory of Flexible Electronics (KLOFE)& Institute of advanced materials (IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) Nanjing Tech University Nanjing 211816 China Department of Chemistry Southern University of Science and Technology Shenzhen 518055 China university of Chinese Academy of Sciences Beijing 100049 China

The fast developing semiconductor industry is pushing to shrink and speed up transistors. This trend requires us to understand carrier dynamics in semiconductor heterojunctions with both high spatial and temporal resolutions. Recently, we have successfully set up a timeresolved photoemission electron microscopy (TR-PEEM), which integrates the spectroscopic technique to measure electron densities at specific energy levels in space. This instrument provides us an unprecedented access to the evolution of electrons in terms of spatial location, time resolution, and energy, representing a new type of 4D spectro-microscopy. Here in this work, we present measurements of semiconductor performance with a time resolution of 184 fs, electron kinetic energy resolution of 150 meV, and spatial resolution of about 150 nm or better. We obtained time-resolved micro-area photoelectron spectra and energy-resolved TR-PEEM images on the Pb island on Si(111). These experimental results suggest that this instrument has the potential to be a powerful tool for investigating the carrier dynamics in various heterojunctions, which will deepen our understanding of semiconductor properties in the submicron/nanometer spatial scales and ultrafast time scales.

关键词： Time resolution Photoemission electron microscopy Ultrafast carrier dynamics Photoelectron spectroscopy

Universal 4-qualifiable fluorene-based building blocks for potential optoelectronic applications

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2022年第12期33卷 5137-5141页

作者： Xiang An Jinghao Yang Man Xu Lili Sun Lubing Bai Kai Wang Zhiqiang Zhuo Yingying Zheng Jinyi Lin Xuehua Ding Yuyu Liu Linghai Xie Chengrong Yin Wei Huang Key Laboratory of Flexible Electronics(KLOFE)&Institute of advanced materials(IAM) Nanjing Tech University(NanjingTech)Nanjing 211816China State Key Laboratory of Organic Electronics and Information Displays&Institute of advanced materials(IAM) Nanjing University of Posts&TelecommunicationsNanjing 210023China Frontiers Science center for Flexible Electronics(FSCFE) MIIT Key Laboratory of Flexible Electronics(KLoFE)Northwestern Polytechnical UniversityXi'an 710072China Electrical Engineering College Nanjing Vocational University of Industry TechnologyNanjing 210023China

In the design of conjugated molecules,modular production enables materials to easily realize structure modification and precisely tune their photoelectrical *** of a novel and universal building block is crucial to design and manufacture high performance and stable conjugated molecules for optoelectronic ***,we originally demonstrated a universal 4-qualifiable fluorene-based building block,which is a fundamental molecular segment to functionalize and obtain novel conjugated *** to the traditional modification at 9-site,additional 4-position functionalization provided an exciting blueprint to not only tune electronic structure and excited state via p-n molecular design engineering and space charge-transfer strategy,but also allow for optimizing intermolecular arrangement and obtaining solution-processing *** introduction of the 4-site substituent in fluorene based semiconductors may endow materials with unique ***,we successfully prepared two stable deep-blue light-emitting conjugated polymer,PODOPF and PODOF,by utilizing the 4-substituent fluorene based building *** is believable that the performance,stability and processibility of reported outstanding fluorene-based conjugated molecules can be further optimized based on this universal building block.

关键词： Side-chain coupling Small molecular emitter Morphological stability Deep-blue emission Optoelectronic device

Efficient SO_(2)removal using aqueous ionic liquid at low partial pressure

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Engineering 2023年第6期58卷 355-363页

作者： Yutong Jiang Yifeng Chen Fuliu Yang Jixue Fan Jun Li Zhuhong Yang Xiaoyan Ji College of Chemical Engineering Nanjing Tech UniversityNanjing 211816China Institute of Chemical industry of Forest Products CAFKey Laboratory of Biomass Energy and MaterialJiangsu ProvinceNanjing 210042China Co-innovation center of Efficient Processing and Utilization of Forest Resources Nanjing Forestry UniversityNanjing 210037China Energy Engineering Division of Energy ScienceLuleå University of TechnologyLuleå97187Sweden

The development of novel absorbents is essential for SO_(2)*** this study,a novel ionic liquid(IL,[BHEP][HSO_(4)])was prepared,and water was selected as the *** density and viscosity of aqueous[BHEP][HSO_(4)]were measured and the SO_(2)absorption performance was systematically ***,the thermodynamic properties of SO_(2)in aqueous[BHEP][HSO_(4)]were ***,the mechanism of SO_(2)absorption in aqueous[BHEP][HSO_(4)]was confirmed using Fouriertransform infrared and nuclear magnetic resonance *** showed that[BHEP][HSO_(4)]absorbed0.302 g·g^(-1)(g SO_(2)/g IL)at an SO_(2)partial pressure of 2000μl·L^(-1)at 303.2 K,and the SO_(2)desorption enthalpy was-39.63 k J·mol^(-1).The mechanistic study confirmed the chemical absorption of SO_(2)in aqueous[BHEP][HSO_(4)].

关键词： Ionic liquids Sulfur dioxide Absorption capacity Desorption enthalpy

CEPC technical Design Report

在线全文

学校读者我要写书评

暂无评论

Radiation Detection technology and Methods 2024年第1期8卷 I0003-I0016,1-1091页

作者： Waleed Abdallah Tiago Carlos Adorno de Freitas Konstantin Afanaciev Shakeel Ahmad Ijaz Ahmed Xiaocong Ai Abid Aleem Wolfgang Altmannshofer Fabio Alves Weiming An Rui An Daniele Paolo Anderle Stefan Antusch Yasuo Arai Andrej Arbuzov Abdesslam Arhrib Mustafa Ashry Sha Bai Yu Bai Yang Bai Vipul Bairathi Csaba Balazs Philip Bambade Yong Ban Tripamo Bandyopadhyay Shou-Shan Bao Desmond P.Barber Ayse Bat Varvara Batozskaya Subash Chandra Behera Alexander Belyaev Michele Bertucci Xiao-Jun Bi Yuanjie Bi Tianjian Bian Fabrizio Bianchi Thomas Biekotter Michela Biglietti Shalva Bilanishvili Deng Binglin Denis Bodrov Anton Bogomyagkov Serge Bondarenko Stewart Boogert Maarten Boonekamp Marcello Borri Angelo Bosotti Vincent Boudry Mohammed Boukidi Igor Boyko Ivanka Bozovic Giuseppe Bozzi Jean-Claude Brient Anastasiia Budzinskaya Masroor Bukhari Vladimir Bytev Giacomo Cacciapaglia Hua Cai Wenyong Cai Wujun Cai Yijian Cai Yizhou Cai Yuchen Cai Haiying Cai Huacheng Cai Lorenzo Calibbi Junsong Cang Guofu Cao Jianshe Cao Antoine Chance Xuejun Chang Yue Chang Zhe Chang Xinyuan Chang Wei Chao Auttakit Chatrabhuti Yimin Che Yuzhi Che Bin Chen Danping Chen Fuqing Chen Fusan Chen Gang Chen Guoming Chen Hua-Xing Chen Huirun Chen Jinhui Chen Ji-Yuan Chen Kai Chen Mali Chen Mingjun Chen Mingshui Chen Ning Chen Shanhong Chen Shanzhen Chen Shao-Long Chen Shaomin Chen Shiqiang Chen Tianlu Chen Wei Chen Xiang Chen Xiaoyu Chen Xin Chen Xun Chen Xurong Chen Ye Chen Ying Chen Yukai Chen Zelin Chen Zilin Chen Gang Chen Boping Chen Chunhui Chen Hok Chuen Cheng Huajie Cheng Shan Cheng Tongguang Cheng Yunlong Chi Pietro Chimenti Wen Han Chiu Guk Cho Ming-Chung Chu Xiaotong Chu Ziliang Chu Guglielmo Coloretti Andreas Crivellin Hanhua Cui Xiaohao Cui Zhaoyuan Cui Brunella D'Anzi Ling-Yun Dai Xinchen Dai Xuwen Dai Antonio De Maria Nicola De Filippis Christophe De La Taille Francesca De Mori Chiara De Sio Elisa Del Core Shuangxue Deng Wei-Tian Deng Zhi Deng Ziyan Deng Bhupal Dev Tang Dewen Biagio Di Micco Ran Ding Siqin Dingl Yadong Ding Haiyi Dong Jianin AGH university of Science and technology Faculty of Physics and Applied Computer ScienceKrakow Anhui university HefeiAnhui Applied Physics Department Federal Urdu University of ArtsScience and TechnologyIslamabad Banaras Hindu university Institute of ScienceVaranasi Bandirma Onyedi Eylul university Bandirma Beihang university Beijing Beijing Computational Science Research center Beijing Beijing Conveyi LTD Beijing Beijing Glass Research Institute Co. LtdBeijing Beijing Institute of technology Beijing Beijing Normal university Beijing Brown university ProvidenceRI Budker Institute of Nuclear Physics Novosibirsk Cadi Ayyad university Laboratory of Fundamental and Applied PhysicsPolydisciplinary FacultyMarrakech Cairo university Giza center for Theory and Computation National Tsing Hua UniversityHsinchu Central China Normal university WuhanHubei Central South university ChangshaHunan Centro de Fisica Teorica de Particulas Universidade Tecnica de LisboaLisboa Chengdu KaitengSifang Digital Radio&TV Equipment Co. LtdChengduSichuan China academy of engineering physics MianyangSichuan China building materials academy Beijing China center of advanced Science and technology Beijing China Institute of Atomic Energy Beijing China Jiliang university HangzhouZhejiang China Nuclear Instrument CO. LTDBeijing China university of Geosciences Beijing China university of Geosciences WuhanHubei China university of Mining and technology XuzhouJiangsu China West Normal university NanchongSichuan Chongqing university Department of PhysicsChongqing Chulalongkorn university Bangkok City university of Hong Kong Department of PhysicsHong Kong Cockcroft Institute Daresbury Cornell university IthacaNY CPPM(AMU/IPhU&CNRS/INP) Marseille Dalian Minzu university DalianLiaoning Dalian university of technology Department of PhysicsDalian Deutsches Elektronen-Synchrotron DESY Hamburg Dzhelepov Laboratory of Nuclear Problems of Joint Institute for Nuclear Research(DLNP JINR) Dubna East China university Of Science And technol

The Circular Electron Positron Collider(CEPC)is a large scientific project initiated and hosted by China,fostered through extensive collaboration with international *** complex comprises four accelerators:a 30 GeV Linac,a 1.1 GeV Damping Ring,a Booster capable of achieving energies up to 180 GeV,and a Collider operating at varying energy modes(Z,W,H,and tt).The Linac and Damping Ring are situated on the surface,while the subterranean Booster and Collider are housed in a 100 km circumference underground tunnel,strategically accommodating future expansion with provisions for a potential Super Proton Proton Collider(SPPC).The CEPC primarily serves as a Higgs *** its baseline design with synchrotron radiation(SR)power of 30 MW per beam,it can achieve a luminosity of 5×10^(34)cm^(-2)s^(-1)per interaction point(IP),resulting in an integrated luminosity of 13 ab^(-1)for two IPs over a decade,producing 2.6 million Higgs *** the SR power to 50 MW per beam expands the CEPC's capability to generate 4.3 million Higgs bosons,facilitating precise measurements of Higgs coupling at sub-percent levels,exceeding the precision expected from the HL-LHC by an order of *** technical Design Report(TDR)follows the Preliminary Conceptual Design Report(Pre-CDR,2015)and the Conceptual Design Report(CDR,2018),comprehensively detailing the machine's layout,performance metrics,physical design and analysis,technical systems design,R&D and prototyping efforts,and associated civil engineering ***,it includes a cost estimate and a preliminary construction timeline,establishing a framework for forthcoming engineering design phase and site selection *** is anticipated to begin around 2027-2028,pending government approval,with an estimated duration of 8 *** commencement of experiments and data collection could potentially be initiated in the mid-2030s.

关键词： initiated exceeding precise

Special issue on “Green chemical process and intensification”

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Chemical Science and Engineering 2022年第11期16卷 1533-1535页

作者： You Han Xiang Ma Lin-Bing Sun Jianhong Xu School of Chemical Engineering and technology Tianjin UniversityTianjin 300072China Key Laboratory for advanced materials and Institute of Fine Chemicals School of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai 200237China State Key Laboratory of materials-Oriented Chemical Engineering Jiangsu National Synergetic Innovation Center for Advanced Material(SICAM)College of Chemical EngineeringNanjing Tech UniversityNanjing 211816China The State Key Laboratory of Chemical Engineering Department of Chemical EngineeringTsinghua UniversityBeijing 100084China

In order to better unite and lead young chemical engineering scholars,the Chemical industry and Engineering Society of China will establish Youth Working *** the time of the establishment of Youth Working Committee,we were invited as guest editors to organize the special issue of Frontiers of Chemical Science and Engineering on green chemical process and intensification,aiming to inspire the innovative ideas and build an energetic and academic communication platform for young scholars.

关键词： intensification process chemical

Recent progress of integrated circuits and optoelectronic chips

在线全文

学校读者我要写书评

暂无评论

Science China(Information Sciences) 2021年第10期64卷 103-135页

作者： Yue HAO Shuiying XIANG Genquan HAN Jincheng ZHANG Xiaohua MA Zhangming ZHU Xingxing GUO Yahui ZHANG Yanan HAN Ziwei SONG Yan LIU Ling YANG Hong ZHOU Jiangyi SHI Wei ZHANG Min XU Weisheng ZHAO Biao PAN Yangqi HUANG Qi LIU Yimao CAI Jian ZHU Xin OU Tiangui YOU Huaqiang WU Bin GAO Zhiyong ZHANG Guoping GUO Yonghua CHEN Yong LIU Xiangfei CHEN Chunlai XUE Xingjun WANG Lixia ZHAO Xihua ZOU Lianshan YAN Ming LI School of Microelectronics Xidian University State Key Laboratory of Integrated Service Networks Xidian University National Integrated Circuit innovation center School of Microelectronics Fudan University School of Integrated Circuit Science and Engineering Beihang University China center for Information industry Development Frontier Institute of Chip and System Fudan University Institute of Microelectronics Peking University nanjing Electronic Devices Institute State Key Laboratory of Functional Material for Informatics Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Institute of Microelectronics Tsinghua University center for Carbon-based Electronics Department of Electronics Peking University CAS Key Laboratory of Quantum Information University of Science and Technology of China CAS center for Excellence and Synergetic innovation center in Quantum Information and Quantum Physics University of Science and Technology of China Origin Quantum Computing Company Limited Key Laboratory of Flexible Electronics & Institute of advanced materials Nanjing Tech University State Key Laboratory of Electronic Thin Films and Integrated Devices School of Optoelectronic Science and EngineeringUniversity of Electronic Science and Technology of China National Laboratory of Solid State Microstructures & College of Engineering and Applied Sciences Nanjing University State Key Laboratory on Integrated Optoelectronics Institute of Semiconductors Chinese Academy of Sciences center of materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences State Key Laboratory of advanced Optical Communication Systems and Networks School of Electronics Engineering and Computer Science Peking University School of Electrical and Electronic Engineering Tiangong University center for Information Photonics and Communications School of Information Science and TechnologySouthwest Jiaotong University School of Electronic Electrical and Communication Engineering

Integrated circuits(ICs) and optoelectronic chips are the foundation stones of the modern information society. The IC industry has been driven by the so-called "Moore’s law" in the past 60 years, and now has entered the post Moore’s law era. In this paper, we review the recent progress of ICs and optoelectronic chips. The research status, technical challenges and development trend of devices, chips and integrated technologies of typical IC and optoelectronic chips are focused on. The main contents include the development law of IC and optoelectronic chip technology, the IC design and processing technology, emerging memory and chip architecture, brain-like chip structure and its mechanism, heterogeneous integration, quantum chip technology, silicon photonics chip technology, integrated microwave photonic chip, and optoelectronic hybrid integrated chip.

关键词： integrated circuit photonic neural computing semiconductor science and technology optoelectronic device and chip photonic integrated circuit wide bandgap semiconductors silicon photonics hybrid integration quantum chip integrated microwave photonic

Evolving strategies for marine enzyme engineering:recent advances on the molecular modification of alginate lyase

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Marine Life Science & technology 2022年第1期4卷 106-116页

作者： Shengsheng Cao Qian Li Yinxiao Xu Tiancheng Tang Limin Ning Benwei Zhu College of Food Science and Light industry Nanjing Tech UniversityNanjing211816China School of Medicine and Holistic Integrative Medicine Nanjing University of Chinese MedicineNanjing210023China

Alginate,an acidic polysaccharide,is formed byβ-D-mannuronate(M)andα-L-guluronate(G).As a type of polysaccharide lyase,alginate lyase can efficiently degrade alginate into alginate oligosaccharides,having potential applications in the food,medicine,and agriculture ***,the application of alginate lyase has been limited due to its low catalytic efficiency and poor temperature *** recent years,various structural features of alginate lyase have been determined,resulting in modification strategies that can increase the applicability of alginate lyase,making it important to summarize and discuss the current *** this review,we summarized the structural features and catalytic mechanisms of alginate *** modification strategies,such as rational design,directed evolution,conserved domain recombination,and non-catalytic domain truncation,are also described in ***,the application of alginate lyase is *** comprehensive summary can inform future applications of alginate lyases.

关键词： Alginate lyase Structure Catalytic mechanism Molecular modification Application

Recent Development of Cardanol Based Polymer materials-A Review

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Renewable materials 2019年第7期7卷 601-619页

作者： Puyou Jia Fei Song Qiaoguang Li Haoyu Xia Mei Li Xugang Shu Yonghong Zhou Institute of Chemical industry of Forest Products Chinese Academy of Forestry(CAF)/Key Lab.of Biomass Energy and Material/Co-Innovation Center of Efficient Processing and Utilization of Forest ResourcesNanjing Forestry University/Key and Open Laboratory of Forest Chemical EngineeringSFA/National Engineering Laboratory for Biomass Chemical UtilizationNanjingChina School of Chemistry and Chemical Engineering Zhongkai University of Agriculture and EngineeringGuangzhouChina College of Chemical Engineering Nanjing Tech UniversityNanjingChina

Polymers from renewable resources are receiving tremendous attention due to the increasing concerns on the depletion of fossil oils and deteriorated ***,as an abundant and renewable chemical raw material,has been widely used for the production of renewable polymer materials via converting into various of chemical monomers with active functional *** comprehensive review deals with various aspects of cardanol as a starting material the preparing various polymer and polymer composites such as benzoxazine resins,phenolic resin,polyurethanes,epoxy resin,vinyl ester polymers,polyamide and cyanate ester *** assessment of the future prospects for the use of cardanol to synthesise novel and valuable renewable materials is presented.

关键词： Cardanol sustainable synthesis platform chemical epoxy resin polyurethane

Recent advances in directα-C(sp^(3))-H bond functionalization of thioethers

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Green Synthesis and Catalysis

Green Synthesis and Catalysis 2022年第3期3卷 203-211页

作者： Long Tang Qingyue Hu Ke Yang Mazen Elsaid Chong Liu Haibo Ge Institute of Chemical industry of Forest Products Chinese Academy of ForestryNanjing 210042China Jiangsu Key Laboratory of advanced Catalytic materials&technology School of Petrochemical EngineeringChangzhou UniversityChangzhou 213164China Department of Chemistry and Biochemistry Texas Tech UniversityLubbock TX 79409USA

Thioether skeletons are widely present in drugs,natural products,functional materials,and life *** the past decade,the selective C–H functionalization of thioethers has been extensively studied to construct novel thioether *** mini-review systematically introduces the recent advances in the field of the directα-C(sp^(3))-H functionalization of thioethers.

关键词： Thioether C(sp^(3))-H bond Functionalization Photochemistry Electrochemistry Organic synthesis