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Properties of processes associated with the glass transition of water are isomorphic to those of other glass-formers

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Chemical Physics 2025年 596卷

作者： Ngai, K.L. Zhang, Yanhui Capaccioli, S. Wang, Li-Min Istituto per i Processi Chimico-Fisici del CNR Largo Bruno Pontecorvo 3 Pisa I-56127 Italy Center for Advanced Structural Materials State Key Lab of Metastable Materials Science and Technology Yanshan University Hebei Qinhuangdao 066004 China Dipartimento di Fisica Università di Pisa Largo Bruno Pontecorvo 3 Pisa I-56127 Italy School of Materials Science and Engineering Hebei University of Technology Tianjin 300130 China

Since its inception in 1979, the Coupling Model have predicted universality of the dynamic processes and their properties in glass-forming materials irrespective of physical structure and chemical composition. The three major dynamic processes are the caged dynamics at early times, the intermediary primitive and the Johari-Goldstein β relaxation, and the terminal structural α relaxation. They are coupled together, and thus their properties are interrelated and universal. Experiments and simulations data of many different classes of glass-forming materials analyzed over the past 45 years and collected in the review, Prog. Mater. Sci. 2023, 139, 101130, have verified extensively the prediction of universality of the interrelated properties. In this paper we performed critical tests of the universal interrelated properties of the three processes in water involved in its liquid-glass transition problem. The positive results from the tests show water is no exception. The universal properties found in water have the benefits of solving the glass transition problem of water and resolving the controversies that last over several decades. Controversies instead of solutions in the past were due to failure to include caged dynamics and Johari-Goldstein β relaxation and their linkage to the structural α relaxation of water in interpreting the experimental data. © 2025 Elsevier B.V.

关键词： Coupling model diffusion Glass transition Relaxation Water

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Electron-phonon coupling-assisted universal red luminescence of o-phenylenediamine-based carbon dots

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Light(Science & Applications) 2022年第7期11卷 1501-1514页

作者： Boyang Wang Zhihong Wei Laizhi Sui Jingkun Yu Baowei Zhang Xiaoyong Wang Shengnan Feng Haoqiang Song Xue Yong Yuxi Tian Bai Yang Siyu Lu Green Catalysis Center and College of ChemistryZhengzhou University450000 ZhengzhouChina Key Laboratory of Mesoscopic Chemistry of MOE School of Chemistry and Chemical EngineeringJiangsu Key Laboratory of Vehicle Emissions ControlNanjing University210023 NanjingChina State Key Lab of Molecular Reaction Dynamics Dalian Institute of Chemical PhysicsChinese Academy of Sciences116023 DalianChina Nanochemistry Department Istituto Italiano di Tecnologia(IIT)via Morego 3016163 GenovaItaly School of Physics National Laboratory of Solid State MicrostructuresCollaborative Innovation Center of Advanced MicrostructuresNanjing University210093 NanjingChina Department of Chemistry University of SheffieldSheffield S37HFUK State Key Lab of Supramolecular Structure and Materials College of ChemistryJilin University130012 ChangchunChina

Due to the complex core-shell structure and variety of surface functional groups,the photoluminescence(PL)mechanism of carbon dots(CDs)remain unclear.o-Phenylenediamine(oPD),as one of the most common precursors for preparing red emissive CDs,has been extensively ***,most of the red emission CDs based on oPD have similar PL emission ***,we prepared six different oPD-based CDs and found that they had almost the same PL emission and absorption spectra after *** and spectral characterization indicated that they had similar carbon core structures but diffferent surface polymer ***,single-molecule PL spectroscopy confirmed that the multi-modal emission of those CDs originated from the transitions of different vibrational energy levels of the same PL center in the carbon *** addition,the phenomenon of"spectral splitting"of single-particle CDs was observed at low temperature,which confirmed these oPD-based CDs were unique materials with properties of both organic molecules and quantum ***,theoretical calculations revealed their potential polymerization mode and carbon core ***,we proposed the PL mechanism of red-emitting CDs based on oPD precursors;that is,the carbon core regulates the PL emission,and the polymer shell regulates the PL *** work resolves the controversy on the PL mechanism of oPD-based red *** findings provide a general guide for the mechanism exploration and structural analysis of other types of CDs.

关键词： structure. carbon luminescence

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Comparison between strobe correlator and narrow correlator on MBOC DLL tracking loop

Comparison between strobe correlator and narrow correlator o...

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2011 IEEE International Instrumentation and Measurement Technology Conference, I2MTC 2011

作者： Xuefen, Zhu Xiyuan, Chen Xin, Chen Key Laboratory of Micro-Inertial Instrument and Advanced Navigation Technology School of Instrument Science and Engineering Southeast University Nanjing China Electronics and Communication Department Politecnico di Torino Italy Navigation Lab. Istituto Superiore Mario Boella Torino Italy

ISBN: (纸本)9781424479351

In this paper, MBOC (Multiplexed Binary Offset Carrier) Signal which is recommended as the optimized modulation on L1 (E1) frequency band by both US and EU sides in the future was studied. This paper carried on the detailed analysis to the new MBOC signal characteristic through the analysis of the power spectral density function. Then two multipath mitigation techniques based on DLL (Delay Lock Loop) - strobe correlator and narrow correlator with basic functionality and implementation were introduced. These two techniques were applied to mitigate the multipath's influence on MBOC signals. Simulation based on Matlab tool was analyzed and the performance was compared with the BOC signals. © 2011 IEEE.

关键词： Spectral density

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Precision cross-sections for advancing cosmic-ray physics and other applications: a comprehensive programme for the next decade

arXiv

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arXiv 2025年

作者： Maurin, D. Audouin, L. Berti, E. Coppin, P. di Mauro, M. von Doetinchem, P. Donato, F. Evoli, C. Génolini, Y. Ghosh, P. Leya, I. Losekamm, M.J. Mariani, S. Norbury, J.W. Orusa, L. Paniccia, M. Poeschl, T. Serpico, P.D. Tykhonov, A. Unger, M. Vanstalle, M. Zhao, M.-J. Boncioli, D. Chiosso, M. Giordano, D. Coral, D.M. Gomez Graziani, G. Lucarelli, C. Maestro, P. Mahlein, M. Morejon, L. Ocampo-Peleteiro, J. Oliva, A. Pierog, T. Šerkšnytė, L. LPSC Université Grenoble-Alpes CNRS IN2P3 Grenoble38026 France Université Paris-Saclay IJC Lab CNRS IN2P3 Orsay91405 France INFN Sezione di Firenze Sesto Fiorentino FlorenceI-50019 Italy DPNC Université de Genève 1211 Genève 4 Geneva Switzerland INFN Sezione di Torino Via P. Giuria 1 Torino10125 Italy University of Hawaii at Manoa HonoluluHI United States Università degli Studi di Torino Torino Italy Geneva Switzerland Viale Francesco Crispi 7 L’Aquila67100 Italy via G. Acitelli 22 AQ Assergi67100 Italy LAPTh CNRS Université Savoie Mont Blanc AnnecyF-74940 France NASA Goddard Space Flight Center GreenbeltMD20771 United States University of Bern Space Sciences and Planetology BernCH-3012 Switzerland Technical University of Munich School of Natural Sciences Garching Germany Excellence Cluster ORIGINS Garching Germany NASA Langley Research Center HamptonVA23666 United States Department of Astrophysical Sciences Princeton University PrincetonNJ08544 United States Department of Physics Columbia Astrophysics Laboratory Columbia University New YorkNY10027 United States IAP KIT Karlsruhe Germany Université de Strasbourg CNRS IPHC UMR7178 StrasbourgF-67000 France Key Laboratory of Particle Astrophysics Institute of High Energy Physics Chinese Academy of Sciences Beijing100049 China China Center of Advanced Science and Technology Beijing100190 China Università degli Studi dell’Aquila Dipartimento di Scienze Fisiche e Chimiche Via Vetoio L’Aquila67100 Italy Instituto de Física Universidad Nacional Autónoma de México Circuito de la Investigación Científica Ciudad de México Mexico Department of Physical Sciences Earth and Environment University of Siena via Roma 56 Siena53100 Italy INFN Sezione di Pisa Polo Fibonacci Largo B. Pontecorvo 3 Pisa56127 Italy Bergische Universität Wuppertal Gausstrasse 20 Wuppertal42117 Germany INFN Sezione di Bologna Bologna40126 Italy

Cosmic-ray physics in the GeV-to-TeV energy range has entered a precision era thanks to recent data from space-based experiments. However, the poor knowledge of nuclear reactions, in particular for the production of antimatter and secondary nuclei, limits the information that can be extracted from these data, such as source properties, transport in the Galaxy and indirect searches for particle dark matter. The Cross-Section for Cosmic Rays at CERN workshop series has addressed the challenges encountered in the interpretation of high-precision cosmic-ray data, with the goal of strengthening emergent synergies and taking advantage of the complementarity and know-how in different communities, from theoretical and experimental astroparticle physics to high-energy and nuclear physics. In this paper, we present the outcomes of the third edition of the workshop that took place in 2024. We present the current state of cosmic-ray experiments and their perspectives, and provide a detailed road map to close the most urgent gaps in cross-section data, in order to efficiently progress on many open physics cases, which are motivated in the paper. Finally, with the aim of being as exhaustive as possible, this report touches several other fields – such as cosmogenic studies, space radiation protection and hadrontherapy – where overlapping and specific new cross-section measurements, as well as nuclear code improvement and benchmarking efforts, are also needed. We also briefly highlight further synergies between astroparticle and high-energy physics on the question of cross-sections. © 2025, CC BY.

关键词： Cosmic rays

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Efficient Video Object Segmentation Based on Gaussian Mixture Model and Markov Random Field

Efficient Video Object Segmentation Based on Gaussian Mixtur...

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9th International Conference on Signal Processing(第九届国际信号处理学术会议)(ICSP'08)

作者： Zhi Liu Zhaoyang Zhang Jiandong Gu Liquan Shen School of Communication and Information Engineering Shanghai UniversityChina Key Lab of Advanced Di School of Communication and Information Engineering Shanghai UniversityChina

This paper proposes an efficient video object segmentation approach based on Gaussian mixture model (GMM) and Markov random field (MRF).The user-interested video objects are interactively extracted in the first frame of the video sequence,and each video object and the remaining background are represented by individual GMM,which is initialized based on the region segmentation result used for interactive object *** each following frame,two GMM classification results are respectively generated based on only color feature,and both color feature and position feature,which is compensated by the estimated average position change to adapt to fast moving *** on the initial pixel classification result generated from the two GMM classification results and the corresponding confidence measures,the pixel classification result is refined to obtain a reliable video object segmentation result under the MRF *** results on several MPEG-4 test sequences demonstrate the good segmentation performance of the proposed approach.

关键词： video object segmentation Gaussian mixture model Markov random field confidence measure

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Anisotropies of the g-factor tensor and diamagnetic coefficient in crystal-phase quantum dots in InP nanowires

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Nano Research 2019年第11期12卷 2842-2848页

作者： Shiyao Wu Kai Peng Sergio Battiato Valentina Zannier Andrea Bertoni Guido Goldoni Xin Xie Jingnan Yang Shan Xiao Chenjiang Qian Feilong Song Sibai Sun Jianchen Dang Yang Yu Fabio Beltram Lucia Sorba Ang Li Bei-bei Li Francesco Rossella Xiulai Xu Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing100190China CAS Center for Excellence in Topological Quantum Computation and School of Physical Sciences University of Chinese Academy of SciencesBeijing100049China Laboratorio NEST Scuola Normale Superiore and Istituto Nanoscienze-CNRPiazza S.Silvestro 12I-56127PisaItaly S3 Istituto Nanoscienze-CNRVia Campi 213/aModena41125Italy Dipartimento di Scienze Fisiche Informatiche e MatematicheUniversitàdegli Studi di Modena e Reggio EmiliaVia Campi 213/aModena41125Italy Beijing Key Lab of Microstructure and Property of Advanced Materials Beijing University of TechnologyPingleyuan No.100Beijing100024China Songshan Lake Materials Laboratory Dongguan523808China

Crystal-phase low-dimensional structures offer great potential for the implementation of photonic devices of interest for quantum information *** this context,unveiling the fundamental parameters of the crystal phase structure is of much relevance for several ***,we report on the anisotropy of the g-factor tensor and diamagnetic coefficient in wurtzite/zincblende(WZ/ZB)crystal-phase quantum dots(QDs)realized in single InP *** WZ and ZB alternating axial sections in the NWs are identified by high-angle annular dark-field scanning transmission electron *** electron(hole)g-factor tensor and the exciton diamagnetic coefficients in WZ/ZB crystal-phase QDs are determined through micro-photoluminescence measurements at low temperature(4.2 K)with different magnetic field configurations,and rationalized by invoking the spin-correlated orbital current *** work provides key parameters for band gap engineering and spin states control in crystal-phase low-dimensional structures in nanowires.

关键词： g-factor tensor diamagnetic coefficient crystal-phase quantum dot InP NWs

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Efficient Face Segmentation Based on Face Attention Model and Seeded Region Merging

Efficient Face Segmentation Based on Face Attention Model an...

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9th International Conference on Signal Processing(第九届国际信号处理学术会议)(ICSP'08)

作者： Zhi Liu Weiwei Li Xiang Zhang Jie Yang School of Communication and Information Engineering Shanghai UniversityChina Key Lab of Advanced Di School of Communication and Information Engineering Shanghai UniversityChina Institute of Image Processing and Pattern Recognition Shanghai Jiaotong UniversityChina

This paper presents an efficient face segmentation approach based on face attention model and seeded region merging.A face attention model that jointly exploits the information of skin color and eye's position is first constructed to obtain a facial saliency map,which indicates the position of possible faces and is used to determine seed *** a seeded region merging algorithm based on regional facial saliency is proposed to generate a sequence of regions,and the region with the highest regional facial saliency is selected to represent each *** results on a variety of images demonstrate the good segmentation performance of the proposed face segmentation algorithm.

关键词： face segmentation face attention model seeded region merging

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Advances in nuclear detection and readout techniques

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Nuclear Science and Techniques 2023年第12期34卷 281-358页

作者： Rui He Xiao‑Yang Niu Yi Wang Hong‑Wei Liang Hong‑Bang Liu Ye Tian Hong‑Lin Zhang Chao‑Jie Zou Zhi‑Yi Liu Yun‑Long Zhang Hai‑Bo Yang Ju Huang Hong‑Kai Wang Wei‑Jia Han Bei Cao Gang Chen Cong Dai Li‑Min Duan Rui‑Rui Fan Fang‑Fa Fu Jian‑Hua Guo Dong Han Wei Jiang Xian‑Qin Li Xin Li Zhuo‑Dai Li Yu‑Tie Liang Shun Liao De‑Xu Lin Cheng‑Ming Liu Guo‑Rui Liu Jun‑Tao Liu Ze Long Meng‑Chen Niu Hao Qiu Hu Ran Xiang‑Ming Sun Bo‑Tan Wang Jia Wang Jin‑Xiang Wang Qi‑Lin Wang Yong‑Sheng Wang Xiao‑Chuan Xia Hao‑Qing Xie He‑Run Yang Hong Yin Hong Yuan Chun‑Hui Zhang Rui‑Guang Zhao Ran Zheng Cheng‑Xin Zhao Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China Advanced Energy Science and Technology Guangdong Laboratory Huizhou 516000China Key Laboratory of Particle and Radiation Imaging Department of Engineering PhysicsTsinghua UniversityBeijing 100084China School of Integrated Circuits Dalian University of TechnologyDalian 116020China Guangxi Key Laboratory for Relativistic Astrophysics School of Physical Science and TechnologyGuangxi UniversityNanning 530004China School of Nuclear Science and Technology Lanzhou UniversityLanzhou 730000China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China Department of Radiation Oncology National Cancer Center/National Clinical Research Center for Cancer/Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100021China Electronic Engineering School Heilongjiang UniversityHarbin 150080China Spallation Neutron Source Science Center Dongguan 523803China Micro‑electronic Department Harbin Institute of TechnologyHarbin 150001China Purple Mountain Observatory Chinese Academy of SciencesNanjing 210034China Liaoning Academy of Materials Shenyang 110167China Istituto Nazionale di Fisica Nucleare Sezione di PerugiaPerugiaItaly School of Mathematics and Physics Chengdu University of TechnologyChengdu 620035China PLAC Key Laboratory of Quark and Lepton Physics(MOE)Central China Normal UniversityWuhan 430079China School of Electronics and Information Northwestern Polytechnical UniversityXi’an 710129China State Key Lab of Superhard Materials College of PhysicsJilin UniversityChangchun 130012China School of Computer Science Northwestern Polytechnical UniversityXi’an 710129China

“A Craftsman Must Sharpen His Tools to Do His Job,”said *** detection and readout techniques are the foundation of particle physics,nuclear physics,and particle astrophysics to reveal the nature of the ***,they are being increasingly used in other disciplines like nuclear power generation,life sciences,environmental sciences,medical sciences,*** article reviews the short history,recent development,and trend of nuclear detection and readout techniques,covering Semiconductor Detector,Gaseous Detector,Scintillation Detector,Cherenkov Detector,Transition Radiation Detector,and Readout *** explaining the principle and using examples,we hope to help the interested reader underst and this research field and bring exciting information to the community.

关键词： Silicon detector Wide bandgap detector Time projection chamber(TPC) Multigap resistive plate chamber detector(MRPC) Scintillation detector Calorimeters Cherenkov detector Transition radiation detector Artificial intelligence Trigger-less readout

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Natural and Artificial Aging Behaviour of Al-Cu-Ag-Mg-Tib2 (A205) Alloy Processed by Laser Powder Bed Fusion

SSRN

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SSRN 2023年

作者： Barode, Jayant Vayyala, Ashok Aversa, Alberta Yang, Luyan Mayer, Joachim Fino, Paolo Lombardi, Mariangela Department of Applied Science and Technology Politecnico Di Torino Corso Duca degli Abruzzi 24 Torino10129 Italy Forschungszentrum Jülich GmbH Jülich52425 Germany Beijing Key Lab of Microstructure and Properties of Advanced Materials Faculty of Materials and Manufacturing Beijing University of Technology Beijing100124 China

The Al-Cu-Mg-Ag-TiB2 (A205) alloy has gained quite a success in the additive manufacturing domain due to its good processibility. It is a precipitation hardening alloy, and thus, its mechanical properties are greatly influenced by the post-processing treatment done on the printed parts. In the present work, A205 samples processed by laser powder bed fusion were first solution treated and then aged by: (i) natural aging (NA) and (ii) artificial aging (AA). The effects of different aging treatments on the microstructure and mechanical behaviour were evaluated. The heat-treated parts were characterized by differential scanning calorimetry, scanning electron microscopy, electron backscattered diffraction and transmission electron microscopy coupled with energy-dispersive X-ray spectroscopy. Phase identification was carried out through X-ray diffraction. The mechanical behaviour was characterized by micro-hardness and tensile ***, NA and AA heat treatments improved the mechanical behaviour of as-built A205 alloy. The peak hardness was achieved in 20 days (≈ 137 HV) for the NA specimen, whereas it took 4 h at 190 °C (≈ 144 HV) for the AA specimen. The average yield strength, ultimate tensile strength and elongation to fracture for NA and AA were, 276 MPa, 434 MPa, 20 % and 397 MPa, 463 MPa, 11 %, respectively. The structure-property corelation was well understood by evaluating various strengthening factors. Considerable grain boundary strengthening was observed in both NA and AA specimen. The major strengthening contribution in the NA specimen were due to the disordered Mg-Ag co-cluster and solid solution strengthening by Cu. In AA, strengthening due to the precipitation of plate-type Ω/θ’- Al2Cu phase was dominant. In the end, failure mechanism in the NA and AA conditions were also briefly discussed. The laser powder fused A205 alloy demonstrated a significant response to the NA and possess a high-ductility and good-strength combination. © 2023, The Authors. All r

关键词： 3D printing

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Hexa-substituted Benzene Derivatives as Hole Transporting Materials for Efficient Perovskite Solar Cells

Hexa-substituted Benzene Derivatives as Hole Transporting Ma...

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第六届新型太阳能电池材料科学与技术学术研讨会

作者：陶晨刘源杨楚罗 Annamaria Petrozza School of Physics and Technology Wuhan University School of Chemical Engineering and Light Industry Guangdong University of Technology Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials Hubei Key Lab on Organic and Polymeric Optoelectronic MaterialsDepartment of ChemistryWuhan University Center for Nano Science and Technology PoliMi Istituto Italiano di Tecnologia

Two low cost hexa-substituted benzene derivatives, namely HFB-OMeDPA and HPB-OMeDPA, have been successfully utilized as hole transporting materials（HTMs） for efficient perovskite solar cells（PSCs）. The relationships between molecular structure, electronic properties of the semiconductor and eventually the photovoltaic performance are investigated. The planar PSCs employing HPB-OMeDPA as HTM exhibit excellent power conversion efficiencies exceeding 16% under AM 1.5 G illumination conditions, which are comparable to the reference cells based on spiro-OMeTAD.

关键词： Hole transporting material Hexa-substituted Perovskite solar cell Low cost

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