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Electron beams probe quantum coherence

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Light(Science & Applications) 2024年第4期13卷 596-597页

作者： Nahid Talebi institute for experimental and Applied physics Kiel University24118 KielGermany

Scientists have traditionally employed superimposed mutually-coherent electron beams for holography and phase retrieval of electron ***,recent theoretical exploration delves into the interaction of superposed electron beams with the *** investigation aims to elucidate long-range Coulomb correlations and quantum decoherence phenomena when electrons interact with their environment.

关键词： quantum mutually Electron

Generating Baikal-GVD high energy cascade-like neutrino events with a GEANT4-based simulation toolkit

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Chinese physics C 2024年第10期48卷 256-263页

作者： Zike Wang A.D.Avrorin Zhen Cao Mingjun Chen Peiyuan Chu Zh.-A.M.Dzhilkibaev Bo Gao Tianqi Huang Jiali Liu Ying Qi Xiaohao You D.N.Zaborov Key Laboratory of Particle Astrophysics experimental physics Division&institute of High Energy physics Chinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Beijing 100049China institute for Nuclear research of the russian Academy of Sciences Moscow 117312Russia TIANFU Cosmic Ray research Center Chengdu 610213China School of Science Tibet UniversityLhasa 850000China

Using the GEANT4 and Cosmic Ray Monte Carlo(CRMC)software packages,we developed a new simulation toolkit for astrophysical neutrino *** configuring the Baikal-GVD detector and comparing the vertex position and direction of incident particles,as well as the channel-by-channel signals,to the events detected by Baikal-GVD,we successfully generated 13 high-energy cascade neutrino events with the *** analysis revealed a systematic offset between the reconstructed shower position and the true interaction position,with a distance close to the scale of the shower maximum of−0.54±1.29 *** achieved a good linear relationship between the photoelectron number of neutrino events obtained by simulation and the real data measured by *** simulation toolkit could serve as a reliable basis for studying the performance of astrophysical neutrino telescopes.

关键词： high-energy neutrino cascade event simulation Cherenkov

Assembly of functional carboxymethyl cellulose/polyethylene oxide/anatase TiO_(2) nanocomposites and tuning the dielectric relaxation, optical, and photoluminescence performances

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Journal of Semiconductors 2024年第7期45卷 26-38页

作者： Asmaa M.Ismail Abeer A.Reffaee Fawzy G.El Desouky Spectroscopy Department Physics Research InstituteNational Research CentreGizaCairo 12622Egypt Microwave physics and Dielectrics Department National Research CentreDokkiCairoEgypt Solid State physics Department Physics Research InstituteNational Research CentreGizaCairo 12622Egypt

Nanocomposite films consisting of carboxymethyl cellulose,polyethylene oxide(CMC/PEO),and anatase titanium diox-ide(TO)were produced by the use of sol-gel and solution casting ***2 nanocrystals were effectively incorporated into CMC/PEO polymers,as shown by X-ray diffraction(XRD)and attenuated total reflectance fourier transform infrared(ATR-FTIR)*** roughness growth is at high levels of TO nanocrystals(TO NCs),which means increasing active sites and defects in CMC/*** differential scanning calorimetry(DSC)thermograms,the change in glass transition temperature(Tg)val-ues verifies that the polymer blend interacts with TO *** increment proportions of TO NCs have a notable impact on the dielectric performances of the nanocomposites,as *** electrical properties of the CMC/PEO/TO nanocomposite undergo significant *** nanocomposite films exhibit a red alteration in the absorption edge as the concentration of TO NCs increases in the polymer *** decline in the energy gap is readily apparent as the weight percentage of TO NCs *** photoluminescence(PL)emission spectra indicate that the sites of the luminescence peak maximums show slight variation;peaks get wider,while their intensities decrease dramatically as the concentration of TO *** nanocomposite materials show potential for multifunctional applications including optoelectronics,antireflection coatings,pho-tocatalysis,light emitting diodes,and solid polymer electrolytes.

关键词： anatase TiO_(2) CMC/PEO nanocomposites optical photoluminescent electrical optoelectronics

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The interplay of drug therapeutics and immune responses to SARS-CoV-2

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Cellular & Molecular Immunology 2024年第2期21卷 197-200页

作者： Valeria Fumagalli Matteo Iannacone Division of Immunology Transplantationand Infectious DiseasesIRCCS San Raffaele Scientific InstituteMilanItaly Vita-Salute San Raffaele University MilanItaly experimental Imaging Centre IRCCS San Raffaele Scientific InstituteMilanItaly

The SARS-CoV-2 pandemic has necessitated rapid therapeutic and preventative *** vaccines form the frontline of defense,antiviral treatments such as nirmatrelvir have emerged as vital adjunctive measures,particularly for those unable or unwilling to be *** review delves into the potential influence of nirmatrelvir on enduring *** parallel,the potential of drug repurposing is explored,with bisphosphonates being examined for their possible effects against COVID-19 due to their immunomodulatory *** importance of rigorous clinical trials and careful interpretation of preliminary data is emphasized.

关键词： SARS-CoV-2 Nirmatrelvir Bisphosphonates Adaptive immunity Drug repurposing

Stretchable on-skin touchless screen sensor enabled by ionic hydrogel

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Nano research 2024年第5期17卷 4462-4470页

作者： Tianxing Feng Dan Ling Chaoyue Li Wentao Zheng Shichuan Zhang Chang Li Artem Emel’yanov Alexander S.Pozdnyakov Lijun Lu Yanchao Mao Key Laboratory of Materials physics of Ministry of Education School of Physics and MicroelectronicsZhengzhou UniversityZhengzhou 450001China A.E.Favorsky Irkutsk institute of Chemistry Siberian Branch of the Russian Academy of SciencesIrkutsk 664033Russian Federation

Screen sensors are the most commonly used human-machine interfaces in our everyday life,which have been extensively applied in personal electronics like *** screen sensors are attracting growing interest due to their distinct advantages of high interaction freedom,comfortability,and hand ***,the material compositions of current touchless screen sensors are rigid and fragile,hardly meeting the needs of wearable and stretchable on-skin electronics ***,these touchless screen sensors are also restricted by high power consumption,limited gesture types of recognition,and the requirement of light ***,we report a stretchable on-skin touchless screen sensor(OTSS)enabled by an ionic hydrogel-based triboelectric nanogenerator(TENG).Compared with current touchless screen sensors,the OTSS is stretchable,self-powered,and competent to recognize diverse gestures by making use of charges naturally carried on fingers without the need of sufficient light *** on-skin noncontact screen operating system is further demonstrated on the basis of the OTSS,which could unlock a cellphone interface in touchless operation mode on the human *** work for the first time introduces the on-skin touchless concept to screen sensors and offers a direction to develop new-generation screen sensors for future cellphones and personal electronics.

关键词： human-machine interface stretchable ionic hydrogel triboelectric nanogenerator self-powered sensor

Breaking the scattering limits of water waves

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National Science Review 2024年第6期11卷 85-86页

作者： Adrià Canós Valero Thomas Weiss Yuri Kivshar institute of physics University of Graz 4th physics institute University of Stuttgart research School of physics Australian National University

When water, light or sound waves impinge on objects smaller than the wavelength, a scattering process takes place[1]. The scattering of waves plays an essential role in a myriad of natural phenomena. In ocean engineering, enhancing the scattering of water waves allows capturing energy from larger areas, with clear implications for energy harvesting and coastal protection.

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Pulsed THz radiation under ultrafast optical discharge of vacuum photodiode

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Frontiers of Optoelectronics 2024年第2期 100-113页

作者： Aleksandr A.Ushakov Kseniia A.Mamaeva Leonid V.Seleznev Georgy E.Rizaev Vladimir Bukin Timophey V.Dolmatov Pavel A.Chizhov Vladimir Bagdasarov Sergey V.Garnov Prokhorov General physics institute of the russian Academy of Sciences Physical institute Russian Academy of Sciences Moscow institute of physics and Technology russian institute for scientific and Technical Information

In this paper, we first present an experimental demonstration of terahertz radiation pulse generation with energy up to 5 pJ under the electron emission during ultrafast optical discharge of a vacuum photodiode. We use a femtosecond optical excitation of metallic copper photocathode for the generation of ultrashort electron bunch and up to 45 kV/cm external electric field for the photo-emitted electron acceleration. Measurements of terahertz pulses energy as a function of emitted charge density, incidence angle of optical radiation and applied electric field have been provided. Spectral and polarization characteristics of generated terahertz pulses have also been studied. The proposed semi-analytical model and simulations in COMSOL Multiphysics prove the experimental data and allow for the optimization of experimental conditions aimed at flexible control of radiation parameters.

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Does HSP27 injection induce glaucoma damage in mice?

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Neural Regeneration research 2024年第11期19卷 2347-2348页

作者： Stephanie C.Joachim Sabrina Reinehr experimental Eye research institute University Eye HospitalRuhr-University BochumBochumGermany

In a further aging society,excellent eyesight is an integral part of overall well-being and quality of *** good vision is crucial to maintaining mobility,independence,and mental *** can be several reasons for visual impairment in elderly people,these include age-related macular degeneration,the leading cause of vision loss among older adults,cataract,glaucoma,diabetic retinopathy,retinal detachment,and others.

关键词： HSP27 injection damage

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The Observed Near-Surface Energy Exchange Processes over Arctic Glacier in Summer

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Journal of Meteorological research 2024年第3期38卷 600-607页

作者： Libo ZHOU Jinhuan ZHU Linlin KONG Peng LI Shupo MA Fei LI Han ZOU Meigen ZHANG Irina REPINA Department of Lower Atmospheric Observation and research Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing100029China State Key Laboratory of Atmospheric Boundary Layer physics and Atmospheric Chemistry Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing100029China Department of Weather Forecast Aviation Meteorological Centre of Air Traffic Management BureauCivil Aviation Administration of ChinaBeijing100015China A.M.Obukhov institute of Atmospheric physics Russian Academy of Sciences(RAS)Moscow119017Russian Federation

Under Arctic warming,near-surface energy transfers have significantly changed,but few studies have focused on energy exchange over Arctic glacier due to limitations in available *** this study,the atmospheric energy exchange processes over the Arctic glacier surface were analyzed by using observational data obtained in summer 2019 in comparison with those over the Arctic tundra *** energy budget over the glacier greatly differed from that over the tundra,characterized by less net shortwave radiation and downward sensible heat flux,due to the high albedo and icy *** of the incoming solar radiation was injected into the glacier in summer,leading to snow ice *** the observation period,strong daily variations in near-surface heat transfer occurred over the Arctic glacier,with the maximum downward and upward heat fluxes occurring on 2 and 6 July 2019,*** analyses suggested that the maximum downward heat flux is mainly caused by the strong local thermal contrast above the glacier surface,while the maximum upward heat transfer cannot be explained by the classical turbulent heat transfer theory,possibly caused by countergradient heat *** results indicated that the near-surface energy exchange processes over Arctic glacier may be strongly related to local forcings,but a more in-depth investigation will be needed in the future when more observational data become available.

关键词： Arctic glacier tundra energy exchange processes

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