期刊文献+
任意字段
题名或关键词
题名
关键词
摘要
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息
共找到194篇文章
< 1 2 … 10 >
每页显示 20 50 100
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
显示方式：
Investigations of inelastic cross sections of H2O molecule by He2+ and C6+ projectiles with energy range around the Bragg peak 认领 引用
1
作者 Guo-Zhuang Li Cheng-Ye Sun +5 位作者 Rui Cheng Yan-Shi Zhang Liang-Wen Chen Sheng Zhang Xin-Xia Li Lei Yang 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2025年第2期141-154,共14页
Inelastic collisions are the dominant cause of energy loss in radiotherapy.In the energy range around the Bragg peak,single ionization(SI)and single-electron capture(SC)are the primary inelastic collisions that lead t... Inelastic collisions are the dominant cause of energy loss in radiotherapy.In the energy range around the Bragg peak,single ionization(SI)and single-electron capture(SC)are the primary inelastic collisions that lead to energy loss.This study employs the classical trajectory Monte Carlo method to study the SI and SC processes of H2O molecules using He2+ and C6+ projectiles in the energy range of 10 keV/u to 10 MeV/u.The total cross sections,single differential cross sections,impact parameter dependence of SI and SC,and fragmentation cross sections were investigated.Results illustrate that the cross section for SI is the highest when the projectile energy is close to the Bragg peak energy.When the projectile energy is below the Bragg peak energy,the ionized electrons in the forward direction dominate,and the removal of electrons can be associated with large impact parameters.As the projectile energy increases,the emission angle of the electrons gradually transitions from small angles(60°~120°)to large angles(60°~120°),and the removal of electrons is associated with small impact parameters.The energy distributions of the ionized electron are similar when the projectile energy is equal to,below or above the Bragg peak energy.The fragmentation cross sections after SI and SC in the energy range around the Bragg peak were also estimated. 展开更多
关键词 Classical trajectory Monte Carlo Heavy ion-water molecule collision Inelastic cross sections
暂未订购 下载PDF
Structure and Properties of Nano-BaTiO3Powders Synthe-sized via Hydrothermal Method using Different Precursors 认领 引用
2
作者 LIU Haizhou LIU Xingzhong +3 位作者 WU Jianjian YAO Zhonghua LIU Hanxing HAO Hua 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS CSCD 2026年第1期64-71,共8页
Four groups of nano barium titanate powders were prepared using the hydrothermal method.Their phase structure,microscopic morphology and electrical properties were investigated,and the impacts of raw materials on the ... Four groups of nano barium titanate powders were prepared using the hydrothermal method.Their phase structure,microscopic morphology and electrical properties were investigated,and the impacts of raw materials on the barium titanate powders as well as the reaction mechanisms were explored.XRD and FTIR indicate the presence of hydroxyl groups and a small amount of carboxyl groups on the powder surface,and the choice of raw materials significantly affects phase purity,with H2TiO3as raw materials being prone to introducing impurity phases.SEM shows that different precursors lead to morphological differences:soluble raw materials form uniform nanoparticles through a"dissolution-precipitation"mechanism while using TiO2as the titanium source generates hollow bowl-like structures through an"in-situ transformation"mechanism,attributed to the synergistic effects of Ostwald ripening and Kirkendall diffusion.The dielectric properties tests indicate that the dielectric constant at room temperature(1500-3000)and Curie temperature(2000-5000)of the ceramics are both lower than those of ceramics produced by solid-state methods(4000-6000 and>10000),and the phase transition temperature range is widened,which is attributed to factors such as grain refinement,reduced tetragonality,grain boundary effects,and increased defects. 展开更多
关键词 BaTiO3 hydrothermal synthesis nano-powder
暂未订购 下载PDF
Design Engineering,Synthesis Protocols,and Energy Applications of MOF-Derived Electrocatalysts 认领 引用 被引量：23
3
作者 Amr Radwan Huihui Jin +1 位作者 Daping He Shichun Mu 《Nano-Micro Letters》 SCIE EI CAS CSCD 2021年第9期16-47,共32页
The core reactions for fuel cells,rechargeable metal-air batteries,and hydrogen fuel production are the oxygen reduction reaction(ORR),oxygen evolution reaction(OER),and hydrogen evolution reaction(HER),which are heav... The core reactions for fuel cells,rechargeable metal-air batteries,and hydrogen fuel production are the oxygen reduction reaction(ORR),oxygen evolution reaction(OER),and hydrogen evolution reaction(HER),which are heavily dependent on the efficiency of electrocatalysts.Enormous attempts have previously been devoted in non-noble electrocatalysts born out of metal-organic frameworks(MOFs)for ORR,OER,and HER applications,due to the following advantageous reasons:(i)The significant porosity eases the electrolyte diffusion;(ii)the supreme catalyst-electrolyte contact area enhances the diffusion efficiency;and(iii)the electronic conductivity can be extensively increased owing to the unique construction block subunits for MOFs-derived electrocatalysis.Herein,the recent progress of MOFs-derived electrocatalysts including synthesis protocols,design engineering,DFT calculations roles,and energy applications is discussed and reviewed.It can be concluded that the elevated ORR,OER,and HER performances are attributed to an advantageously well-designed high-porosity structure,significant surface area,and plentiful active centers.Furthermore,the perspectives of MOF-derived electrocatalysts for the ORR,OER,and HER are presented. 展开更多
关键词 MOF-derived electrocatalysis Oxygen reduction reaction Oxygen evolution reaction Hydrogen evolution reaction
暂未订购 下载PDF
Copper-coated Porous Polyimide as Ultralight and Safe Current Collectors for Advanced LIBs 认领 引用 被引量：1
4
作者 Cun-Sheng Liu Jun-Qi Hu +4 位作者 Ting-Ting Mao Song-Yi Liao Ru-Ming Feng Yi-Dong Liu Yong-Gang Min 《Chinese Journal of Polymer Science》 SCIE EI CAS CSCD 2024年第4期521-531,共11页
Metallic copper is widely used as current collector(CC) for graphite anode of lithium-ion batteries(LIBs) due to its high electrical conductivity and electrochemical stability. However, the large volume density of com... Metallic copper is widely used as current collector(CC) for graphite anode of lithium-ion batteries(LIBs) due to its high electrical conductivity and electrochemical stability. However, the large volume density of commercial copper foil(~8.9 g·cm-3) limits the increase of energy density of battery. Here, copper-coated porous polyimide(Cu@PPI) was prepared by vacuum evaporation as collector for the graphite anode. The sandwich structure connects the copper metal on both sides of the collector with excellent electrical conductivity. Compared to commercial Cu foil, Cu@PPI has lighter mass(≤3.9 mg for disc of 12 mm diameter versus 9.9 mg of ~10 μm Cu foil) and lower volume density(≤3.3 g·cm-3). In addition, the porous structure allows of better adhesion of reactive substances and electrochemical properties than pure Cu foils. It is estimated that the energy density of Cu@PPI should be much higher than that of Cu foil. This strategy should be applicable for other current collectors. 展开更多
关键词 Copper-coated Vacuum evaporation Porous polyimide(PPI) Current collector(CC) LIBs
暂未订购 下载PDF
Atomic-resolution Interfacial Microstructure and Thermo-electro-magnetic Energy Conversion Performance of Gd/Bi0.5Sb1.5Te3Composites 认领 引用 被引量：1
5
作者 Chengshan Liu Wenjie Xu +10 位作者 Ping Wei Shaoqiu Ke Wenjun Cui Longzhou Li Dong Liang Xianfeng Ye Tiantian Chen Xiaolei Nie Wanting Zhu Wenyu Zhao Qingjie Zhang 《Energy & Environmental Materials》 SCIE EI CAS CSCD 2024年第4期355-363,共9页
Thermo-electro-magnetic materials with simultaneously large magnetocaloric(MC)and thermoelectric(TE)effects are the core part for designing TE/MC all-solid-state cooling devices.Compositing MC phase with TE material i... Thermo-electro-magnetic materials with simultaneously large magnetocaloric(MC)and thermoelectric(TE)effects are the core part for designing TE/MC all-solid-state cooling devices.Compositing MC phase with TE material is an effective approach.However,the elemental diffusion and chemical reaction occurring at the two-phase interfaces could significantly impair the cooling performance.Herein,Gd/Bi0.5Sb1.5Te3(Gd/BST)composites were prepared by a low-temperature high-pressure spark plasma sintering method with an aim to control the extent of interfacial reaction.The reaction of Gd with the diffusive Te and the formation of GdTe nanocrystals were identified at the Gd/BST interfaces by the atomic-resolution microscope.The formed Bi’Teantisite defects and enhanced{000 l}preferential orientation in BST are responsible for the increased carrier concentration and mobility,which leads to optimized electrical properties.The heterogeneous interface phases,along with antisite defects,favor the phonon scattering enhancement and lattice thermal conductivity suppression.The optimized composite sintered at 693 K exhibited a maximum ZT of 1.27 at 300 K.Furthermore,the well-controlled interfacial reaction has a slight impact on the magnetic properties of Gd and a high magnetic entropy change is retained in the composites.This work provides a universal approach to fabricating thermo-electro-magnetic materials with excellent MC and TE properties. 展开更多
关键词 interfacial reaction magnetocaloric performance thermoelectric performance thermo-electro-magnetic materials
暂未订购 下载PDF
PD-L1 targeted iron oxide SERS bioprobe for accurately detecting circulating tumor cells and delineating tumor boundary 认领 引用 被引量：3
6
作者 Ting Pan Dinghu Zhang +10 位作者 Guomei You Xiaoxia Wu Chenguang Zhang Xinyu Miao Wenzhi Ren Yiwei He Lulu He Yuanchuan Gong Jie Lin Aiguo Wu Guoliang Shao 《Chinese Chemical Letters》 SCIE CAS CSCD 2025年第1期408-414,共7页
Early diagnosis and accurate boundary delineation are the key steps of tumor precision medicine.Circulating tumor cells(CTCs)detection of liquid biopsy can provide abundant information for early diagnosis of cancer.Hi... Early diagnosis and accurate boundary delineation are the key steps of tumor precision medicine.Circulating tumor cells(CTCs)detection of liquid biopsy can provide abundant information for early diagnosis of cancer.High detection specificity and good enrichment features are two key factors for CTCs accurate identification in peripheral blood sample.For this purpose,iron oxide(IO)-based surface-enhanced Raman scattering(SERS)bioprobes with good biocompatibility,high detection sensitivity,remarkable detection specificity,and good enrichment efficiency,were developed for detecting different types of CTCs.Magnetic SERS bioprobes combined with programmed death ligand-1(PD-L1)antibody are regarded as an effective way to boost the targeting ability and detection specificity,benefiting for accurately capturing and identifying rare CTCs.Four types of CTCs with different PD-L1 expression were accurately distinguished among white blood cells via high-resolution SERS mapping images and stable Raman signals.Subsequently,CTCs blood samples obtained from the triple negative breast cancer patients were also successfully recognized compared to that of health people,indicating IO@AR@PDA-a PD-L1 SERS bioprobe possessed great potential for CTCs detection in liquid biopsy.Additionally,IO-based bioprobe exhibited excellent dual-modal imaging abilities of high-resolution SERS imaging mode and microimaging magnetic resonance imaging mode.These two highly complementary imaging modes endowed IO-based bioprobes unrivalled capacity in tumor boundary differentiation,supporting tumor accurate resection and precise surgery.To our best knowledge,this is the first time that biocompatible IO-based SERS bioprobes without noble metal element were reported not only for CTCs accurate detection,but also for precise tumor boundary delineation,showing great advantages in tumor diagnosis and treatment. 展开更多
关键词 Circulating tumor cells Surface-enhanced Raman scattering PD-L1 Iron oxide bioprobe Dual-modal imaging Tumor boundaries delineation
暂未订购 下载PDF
Minimizing tin(Ⅱ) oxidation using ethylhydrazine oxalate for high-performance all-perovskite tandem solar cells 认领 引用 被引量：1
7
作者 Jianhua Zhang Xufeng Liao +9 位作者 Weisheng Li Yutian Tian Qinyang Huang Yitong Ji Guotang Hu Qingguo Du Wenchao Huang Donghoe Kim Yi-Bing Cheng Jinhui Tong 《Journal of Semiconductors》 EI CAS CSCD 2025年第5期88-94,共7页
All-perovskite tandem solar cells(ATSCs) have the potential to surpass the Shockley-Queisser efficiency limit of conventional single-junction devices. However, the performance and stability of mixed tin–lead(Sn–Pb) ... All-perovskite tandem solar cells(ATSCs) have the potential to surpass the Shockley-Queisser efficiency limit of conventional single-junction devices. However, the performance and stability of mixed tin–lead(Sn–Pb) perovskite solar cells(PSCs), which are crucial components of ATSCs, are much lower than those of lead-based perovskites. The primary challenges include the high crystallization rate of perovskite materials and the susceptibility of Sn2+ oxidation, which leads to rough morphology and unfavorable p-type self-doping. To address these issues, we introduced ethylhydrazine oxalate(EDO) at the perovskite interface, which effectively inhibits the oxidation of Sn2+ and simultaneously enhances the crystallinity of the perovskite. Consequently, the EDO-modified mixed tin-lead PSCs reached a power conversion efficiency(PCE) of 21.96% with high reproducibility. We further achieved a 27.58% efficient ATSCs by using EDO as interfacial passivator in the Sn-Pb PSCs. 展开更多
关键词 mixed tin–lead perovskite solar cells ethylhydrazine oxalate Sn2+oxidation all-perovskite tandem solar cells
暂未订购 下载PDF
Enhancing the radiation- and oxidation-resistance of Cr-based coatings via structure regulation and composition optimization 认领 引用 被引量：1
8
作者 Renda Wang Nabil Daghbouj +8 位作者 Ping Yu Peng Li Fanping Meng Antonio Cammarata Bingsheng Li P.Bábor Tomas Polcar Qing Huang Fangfang Ge 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2025年第15期153-169,共17页
Cr coatings,as protective coatings of Zr-alloy fuel claddings,inevitably suffer from irradiation damage before they would possibly run into the accident condition.This study evaluates the radiation and oxidation toler... Cr coatings,as protective coatings of Zr-alloy fuel claddings,inevitably suffer from irradiation damage before they would possibly run into the accident condition.This study evaluates the radiation and oxidation tolerance of three Cr-based coatings with different microstructures(Cr,CrAlSi,and CrAlSiN)through He2+ion irradiation and 1200℃ steam oxidation.The Cr and CrAlSi coatings experienced significant structural degradation,characterized by He bubble aggregation and amplified Kirkendall effects at elevated temperatures.In contrast,the irradiated CrAlSiN coating maintained structural integrity without measurable irradiation hardening.Following annealing at 800℃ for 30 min,approximately 40%of injected He atoms were released,indicating a“self-healing”mechanism.The mechanism is attributed to uniformly distributed,low-density channels that act as sinks and release paths for irradiation-induced defects.Density functional theory simulations suggest that N atoms promote significant rearrangement of ions surrounding the free volume,inhibiting the formation of sites capable of trapping He atoms.Moreover,the CrAlSiN coating exhibited superior oxidation resistance compared to the Cr and CrAlSi coatings,even under high-temperature steam conditions.Notably,the irradiated CrAlSiN sample displayed a significantly thinner oxide scale compared to the pristine one(almost half),owing to a more protective oxide scale and rapid outward diffusion of Cr,Al,and Si through nanochannel veins.These findings illuminate the effects of structure and composition on irradiation and oxidation behavior in Cr-based coatings,offering insights for developing new-generation accident-tolerance fuel coatings for Zr-alloy claddings. 展开更多
关键词 Cr-based coatings Irradiation tolerance Low-density nanochannels Oxidation resistance DFT
暂未订购 下载PDF
Magnetic transport and radiation properties during compression of a magnetized plasma 认领 引用
9
作者 Zhao Wang Rui Cheng +14 位作者 Xuejian Jin Yanhong Chen Lulin Shi Guodong Wang Zexian Zhou Zakir Iqbal Yupeng Chen Jinfu Zhang Xiaoxia Wu Yu Lei Yuyu Wang Yongtao Zhao Shuai Liu Liangwen Chen Jie Yang 《Matter and Radiation at Extremes》 SCIE EI CAS CSCD 2025年第3期46-57,共12页
We present a study of magnetic transport and radiation properties during compression of a magnetized laboratory plasma.A theta pinch is used to produce a magnetized plasma column undergoing radial implosion,with plasm... We present a study of magnetic transport and radiation properties during compression of a magnetized laboratory plasma.A theta pinch is used to produce a magnetized plasma column undergoing radial implosion,with plasma parameters comprehensively measured through diverse diagnostic techniques.High-resolution observations show the implosion progressing through three stages:compression,expansion,and recompression.An anomalous demagnetization phenomenon is observed during the first compression stage,wherein the magnetic field at the plasma center is depleted as the density increases.We reveal the demagnetization mechanism and formulate a straightforward criterion for determining its occurrence,through analysis based on extended-magnetohydrodynamics theory and a generalized Ohm’s law.Additionally,we quantitatively evaluate the radiation losses and magnetic field variations during the two compression stages,providing experimental evidence that magnetic transport can influence the radiation properties by altering the plasma hydrodynamics.Furthermore,extrapolated results using our findings reveal direct relevance to magnetized inertial confinement fusion,space,and astrophysical plasma scenarios. 展开更多
关键词 diagnostic techniqueshigh resolution magnetic transport radiation properties demagnetization phenomenon theta pinch magnetized plasma column magnetized laboratory plasmaa radiation properties radial implosionwith
暂未订购 下载PDF
Influencing Factors Investigation and In vitro Biological Performance Characterization of Nanoβ-TCP Synthesized via Microwave-ultrasonic-hydrothermal Multifield Coupling 认领 引用
10
作者 LUO Jing LI Zhi +4 位作者 ZHANG Bowen CHENG Bo YANG Jing LI Binbin WANG Xinyu 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS CSCD 2025年第6期1795-1810,共16页
This study employed a microwave-ultrasonic-hydrothermal multifield coupling method to synthesize nanoβ-Tricalcium phosphate(β-TCP)powder,systematically evaluating the impact of various parameters,including reaction ... This study employed a microwave-ultrasonic-hydrothermal multifield coupling method to synthesize nanoβ-Tricalcium phosphate(β-TCP)powder,systematically evaluating the impact of various parameters,including reaction temperature,time,sintering temperature,reactant types and concentrations,and graphene oxide(GO)concentration,on the physicochemical properties of the nanoβ-TCP powder.The synthesized powder was characterized using X-ray diffraction(XRD),Fourier-transform infrared spectroscopy(FTIR),scanning electron microscopy(SEM),high-resolution transmission electron microscopy(HRTEM),inductively coupled plasma optical emission spectroscopy(ICP-OES),and thermogravimetric-differential scanning calorimetry(TG-DSC).The experimental results indicate that the optimal synthesis conditions are achieved with a 0.6 mol/L Ca(NO3)2·4H2O solution and a 0.4 mol/L(NH4)2HPO4solution at a reaction temperature of 35℃for 40 minutes,followed by sintering at 720℃for 2 hours with 1×10-1g/L GO.The preparedβ-TCP powder exhibits high crystallinity,a pure phase,good dispersibility,no significant aggregation,and uniform particle size of 59.75±12.84 nm.In vitro cytotoxicity tests show excellent biocompatibility and no cytotoxic effects on bone marrow stromal cells(BMSCs)even at concentrations up to 0.8 mg/mL.Furthermore,results from live-dead staining and nuclear membrane staining of cells co-cultured with the material demonstrate that theβ-TCP can promote the proliferation and differentiation of BMSCs to a certain extent,highlighting its potential as a safe and effective material for bone tissue engineering. 展开更多
关键词 nanoparticles β-TCP microwave-ultrasonic-hydrothermal biomaterials in vitro
暂未订购 下载PDF
Automatic phase-setting via time-of-flight alignment and phase calibration on a superconducting hadron linac 认领 引用
11
作者 Chi Feng Jonathan CWong +4 位作者 Zhi-Jun Wang Zhong-Yi Li Wang-Sheng Wang Wei-Long Chen Yuan He 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2025年第7期167-178,共12页
Automatic phase-setting is essential for modern linacs which have increasingly stringent time demands for beam tune-up and fault compensation.A key challenge in automatic phase-setting is obtaining an accurate knowled... Automatic phase-setting is essential for modern linacs which have increasingly stringent time demands for beam tune-up and fault compensation.A key challenge in automatic phase-setting is obtaining an accurate knowledge of the position and phase offsets of all cavities.This study proposes a beam-based method that employs time-of-flight experiments for simultaneous alignment and phase calibration of a superconducting hadron linac.The proposed method is verified using the CAFE2 accelerator at the Institute of Modern Physics,where offset measurements enable rapid tune-up via automatic phase-setting,and the output beam energies closely match the predicted values.The proposed method is able to address longitudinal position shifts within cryomodules due to cool-down,readily applicable to superconducting hadron linacs,and expected to be employed in the upcoming commissioning of CiADS and HIAF. 展开更多
关键词 Linear accelerators Beam position monitor Heavy ion accelerators
暂未订购 下载PDF
Observation and mechanism of non-uniform distribution of tin nuclei in preparing vapor diffusion coated Nb3Sn thin film for SRF applications 认领 引用 被引量：1
12
作者 Shuai Wu Yang Ye +17 位作者 Zi-Qin Yang Yuan He Jian-Peng Li Guang-Ze Jiang Lu Li Shi-Chun Huang An-Dong Wu Hang-Xu Li Shao-Hua Lu Tao Liu Feng Qiu Cang-Long Wang Ji-Zheng Duan Teng Tan Zhi-Jun Wang Sheng-Hu Zhang Hong-Wei Zhao Wen-Long Zhan 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2025年第1期22-34,共13页
Growth of high-quality Nb3Sn thin films for superconducting radiofrequency(SRF)applications using the vapor diffusion method requires a uniform distribution of tin nuclei on the niobium(Nb)surface.This study examin... Growth of high-quality Nb3Sn thin films for superconducting radiofrequency(SRF)applications using the vapor diffusion method requires a uniform distribution of tin nuclei on the niobium(Nb)surface.This study examines the mechanism underlying the observed non-uniform distribution of tin nuclei with tin chloride SnCl2.Electron backscatter diffraction(EBSD)analysis was used to examine the correlation between the nucleation behavior and orientation of niobium grains in the substrate.The findings of the density functional theory(DFT)simulation are in good agreement with the experimental results,showing that the non-uniform distribution of tin nuclei is the result of the adsorption energy of SnCl2molecules by varied niobium grain orientations.Further analysis indicated that the surface roughness and grain size of niobium also played significant roles in the nucleation behavior.This study provides valuable insights into enhancing the surface pretreatment of niobium substrates during the growth of Nb3Sn thin films using the vapor diffusion method. 展开更多
关键词 Nucleation Tin chloride Non-uniform distribution Vapor diffusion Crystal orientation Adsorption energy
暂未订购 下载PDF
Recent progress and future perspectives of ionic liquid-based carbon dioxide capture and conversion 认领 引用 被引量：1
13
作者 Anum Zafar Karolina Matuszek +1 位作者 Douglas R.MacFarlane Xinyi Zhang 《Green Energy & Environment》 SCIE EI CAS CSCD 2025年第6期1097-1129,共33页
Carbon dioxide accounts for about 80 percent of greenhouse emissions and the increasing CO2emission has been identified as a critical environmental issue.On the other hand,CO2is a potentially renewable resource ... Carbon dioxide accounts for about 80 percent of greenhouse emissions and the increasing CO2emission has been identified as a critical environmental issue.On the other hand,CO2is a potentially renewable resource of a single carbon molecule,and new technologies to utilize CO2in producing net-zero fuels and chemicals are of global interest.Great efforts have been made in the development of new materials and processes for CO2capture and utilization(CCU).Among them,ionic liquids(ILs)have attracted much attention due to their unique characteristics such as high CO2solubility,high ionic conductivity,negligible volatility,non-flammability,wide electrochemical window,and high thermal stability,as well as good solvation ability.This review summarizes the most recent efforts devoted to IL-based absorption,catalysts,and CO2capture and utilization processes.We discuss the factors that affect the interaction between ILs and CO2,impacting on the viscosity and CO2solubility and preview the coupling of CO2capture with electrochemical conversion of CO2.Finally,we provide an overview on the advantages and disadvantages of the IL-based process for practical applications. 展开更多
关键词 Ionic liquids CO2capture CO2reduction Absorption Catalysis
暂未订购 下载PDF
Unveiling the top-down crystallization mechanism:Balancing diffusion and crystallization in vapor-solid reactions for efficient perovskite solar cells 认领 引用
14
作者 Changyu Duan Shenghan Hu +6 位作者 Yichen Dou Xinyu Deng Xiongzhuang Jiang Yong Peng Guijie Liang Yi-Bing Cheng Zhiliang Ku 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2025年第9期263-271,I0009,共9页
Vapor deposition is a promising technique for industrializing perovskite solar cells,but limited understanding of crystallization mechanisms in vapor-phase processes hampers progress.This study reveals a top-down crys... Vapor deposition is a promising technique for industrializing perovskite solar cells,but limited understanding of crystallization mechanisms in vapor-phase processes hampers progress.This study reveals a top-down crystallization growth mechanism during a two-step vapor-solid reaction and introduces an accelerated diffusion-buried homogeneous seed(AD-BHS)strategy.By utilizing the rapid diffusion of methylammonium chloride and inducing crystallization with buried seeds,we eliminate residual lead iodide,reduce crystallization time disparities across the film,and enhance uniformity.As a result,we achieve efficiencies of 22.40%for small-area(0.148 cm2)cells and 19.75%for large-area(10.0 cm2)modules,both representing state-of-the-art performance for vapor-solid reaction-based perovskite solar cells.This study provides critical insights into regulating crystallization growth in vapor-deposited perovskite thin films. 展开更多
关键词 Perovskite solar cells Vapor deposition Crystallization dynamics In situ measurement
暂未订购 下载PDF
Effect of Solid Content,Dispersant and Binder Additions on the Drug Loading Properties of Attapulgite in Spray-Dried Microspheres 认领 引用
15
作者 WANG Yu YAN Lisi +3 位作者 CHENG Bo YANG Jing LI Binbin WANG Xinyu 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS CSCD 2025年第5期1504-1513,共10页
To improve the controlled release ability,we prepared attapulgite into microspheres by spray drying.This research began with a thorough thermogravimetric analysis to optimize attapulgite's heat treatment for drug ... To improve the controlled release ability,we prepared attapulgite into microspheres by spray drying.This research began with a thorough thermogravimetric analysis to optimize attapulgite's heat treatment for drug loading.By advanced spray drying,attapulgite was transformed into microspheres,refining its drug release characteristics.Various parameters were examined,achieving optimal particle size and morphology at 25%solid content,2.5%dispersant,and 3% binder.Attapulgite microspheres demonstrated exceptional encapsulation efficiency,exceeding 95% for doxorubicin hydrochloride,highlighting their versatility in drug delivery.FTIR and XRD were used to predict changes in material properties after spray drying.Notably,cytotoxicity tests confirmed the high biocompatibility of attapulgite microspheres,devoid of cell death induction.Attapulgite microsphere loaded with doxorubicin enable sustained drug release and maintain killing ability against tumor cells.This study confirms the viability of spray dried attapulgite microspheres for efficient drug loading and delivery and provides insights for innovative drug delivery systems that utilize the unique properties of attapulgite to advance therapeutics. 展开更多
关键词 attapulgite spray drying microspheres cytotoxicity
暂未订购 下载PDF
Mechanical Metamaterials Made of Freestanding Quasi-BCC Nanolattices of Gold and Copper with Ultra-High Energy Absorption Capacity 认领 引用
16
作者 Cheng Hongwei Zhu Xiaoxia +5 位作者 Cheng Xiaowei Cai Pengzhan Liu Jie Yao Huijun Zhang Ling Duan Jinglai 《IMP & HIRFL Annual Report》 2022年第1期133-134,共2页
Mechanical metamaterials refer to a class of composite materials with artificially designed structures and exhibit extraordinary mechanical properties that traditional materials do not have.Among them,energy absorptio... Mechanical metamaterials refer to a class of composite materials with artificially designed structures and exhibit extraordinary mechanical properties that traditional materials do not have.Among them,energy absorption mechanical metamaterials can absorb mechanical energy more efficiently,which requires the material itself to have both high strength and high strain capacity.But in general,high strength and high strain capacity of materials are difficult to obtain at the same time. 展开更多
关键词 strength strain Copper
暂未订购 下载PDF
Online beam phase calibration with detuning compensation for normal-conducting cavities under closed-loop operation 认领 引用
17
作者 Feng Qiu Cheng-Ye Xu +10 位作者 Ri-Hua Zeng Yuan He Shi-Hui Wei Jia-Yi Peng Li-Juan Yang Zi-Qin Yang Zhou-Li Zhang Zhi-Jun Wang Mu-Yuan Wang Cecilia Maiano Paolo Pierini 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2026年第6期15-30,共16页
Accurate calibration of the beam phase(i.e.,the phase of the beam arrival relative to the cavity accelerating field)is essential for maintaining the stability and efficiency of linear accelerators.Conventional offline... Accurate calibration of the beam phase(i.e.,the phase of the beam arrival relative to the cavity accelerating field)is essential for maintaining the stability and efficiency of linear accelerators.Conventional offline phase-scan methods,such as theΔT phase scan and phase-scan signature matching,are typically performed during commissioning or maintenance,requiring the accelerator to be taken out of normal operation.Moreover,these methods cannot effectively track the gradual drifts caused by ambient conditions.An online beam phase calibration technique using beam-induced radio-frequency(RF)transients was initially developed at DESY for superconducting cavities operating under open-loop conditions.Extending the DESY method to normal-conducting cavities at the European Spallation Source(ESS)introduces challenges.When the beam pulse length approaches the cavity time constantτ=1∕ω0.5,whereω0.5is the cavity half bandwidth,the detuning effects distort the trajectory of the beam-induced RF transient and degrade the beam phase measurement accuracy.Furthermore,open-loop operation is generally not advisable for high-current proton linacs because of stability and safety concerns associated with the operation.To address these issues,we revisited the cavity differential equations and proposed a detuning compensation method that corrects the distorted trajectory in the in-phase/quadrature plane of the laser beam.In addition,by analyzing the initial 1.4μs transient response before low-level RF(LLRF)feedback becomes active,beam phase calibration can be achieved under closed-loop operation.The experimental results indicate that the proposed method agrees well with beam position monitor(BPM)-based measurements.This approach enables real-time beam phase monitoring without interrupting the closed-loop operation and can be adapted to similar accelerator systems. 展开更多
关键词 Beam phase calibration Transient beam loading Detuning effect Closed-loop operation Low-level RF systems Normal-conducting cavity Particle accelerator
暂未订购 下载PDF
Development of an antenna adjustable fundamental power coupler for the 81.25 MHz superconducting cavity at the High Intensity Heavy‑Ion Accelerator Facility 认领 引用
18
作者 Guo‑Chang Liu Tian‑Cai Jiang +9 位作者 Zong‑Heng Xue Ji‑Yu Wang Ke‑An Jin Meng‑Xin Xu Zhou‑Li Zhang Chun‑Long Li Qi‑Tong Huang Sheng‑Xue Zhang Sheng‑Hu Zhang Yuan He 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2026年第7期1-17,共17页
The Institute of Modern Physics(IMP)of the Chinese Academy of Sciences(CAS)has designed and prototyped fundamental power couplers for 81.25 MHz superconducting quarter-wave resonators(QWR)in the High-Intensity Heavy-I... The Institute of Modern Physics(IMP)of the Chinese Academy of Sciences(CAS)has designed and prototyped fundamental power couplers for 81.25 MHz superconducting quarter-wave resonators(QWR)in the High-Intensity Heavy-Ion Accelerator Facility(HIAF).The QWR coupler operates in the pulsed or continuous-wave mode with an average power of 6 kW.This coupler is designed with a 50Ωcoaxial structure and a dual-disk warm-window assembly.Focusing on the optimized heat leakage,a double-walled structure is applied to the outer conductor of the coupler for helium gas cooling at 5 K.To suppress multipacting(MP),a 10-nm titanium nitride(TiN)coating is applied to the vacuum side of the ceramic window,whereas a DC bias voltage is applied to the inner conductor.To reduce the production cost of the coupler and make it suitable for mass production,various coupler fabrication materials were tested,and the feasibility of the fabrication process was verified.The coupler includes two types of diagnostic ports for vacuum and ARC monitoring.Two prototype couplers were fabricated and tested for high-power conditioning.The QWR couplers proved their robustness with 10 h of 9 kW traveling-wave conditioning and 12 h of 9 kW standing wave conditioning,achieving a stabilized 9 kW power level and a stable vacuum.As predicted,MP barriers were encountered at input powers ranging from 1 kW to 9 kW,and a DC bias voltage of 800 V effectively suppressed the occurrence of MP. 展开更多
关键词 81.25 MHz fundamental power coupler Superconducting quarter-wave resonator High-power conditioning
暂未订购 下载PDF
Taming nuclear mass models with Gaussian processes 认领 引用
19
作者 Wen‑Jia Huang Keisuke Fujii Hao‑Zhao Liang 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2026年第8期233-242,共10页
We propose a new set of nuclear mass predictions based on multiple theoretical mass models.By employing Gaussian process regression with the Matern kernel,we achieved root-mean-square(rms)deviations below 100 keV for ... We propose a new set of nuclear mass predictions based on multiple theoretical mass models.By employing Gaussian process regression with the Matern kernel,we achieved root-mean-square(rms)deviations below 100 keV for the training dataset.The best-performing mass models achieved rms deviations below 150 keV for the new precise mass data from AME2020,whereas the ensemble average showed robust performance across the nuclear chart.Our approach uniquely combines:(1)systematic refinement of eight mass models through their residuals,(2)physics-informed features,including magic numbers,nucleon parity numbers,neutron excess,and nuclear collectivity,and(3)theory-to-theory validation demonstrating robust extrapolation capability.We find that the Matern kernel provides superior uncertainty quantification compared to the RBF kernel,with a length-scale analysis revealing enhanced inter-nuclei correlations.We provide complete mass predictions for all unknown nuclides in AME2020,offering valuable constraints for nuclear structure studies and astrophysical modeling when used with proper uncertainty propagation. 展开更多
关键词 Gaussian processes Mass models Predictive power r-process
暂未订购 下载PDF
Production of 287,288Mc isotopes in the 48Ca+243Am reaction at China Accelerator Facility for Superheavy Elements 认领 引用 被引量：1
20
作者 X.Y.Huang Z.Y.Zhang +38 位作者 J.G.Wang L.Ma C.L.Yang M.H.Huang X.L.Wu Z.G.Gan H.B.Yang M.M.Zhang Y.L.Tian Y.S.Wang J.Y.Wang Y.H.Qiang G.Xie S.Y.Xu Z.Zhao Z.C.Li L.C.Sun L.Zhu X.Zhang H.Zhou F.Guan Z.H.Li W.X.Huang Z.Qin Y.Wang X.J.Yin Y.F.Cui Z.W.Lu Y.He L.T.Sun Z.Z.Ren S.G.Zhou V.K.Utyonkov A.A.Voinov Yu.S.Tsyganov A.N.Polyakov D.I.Solovyev N.D.Kovrizhnykh M.V.Shumeiko 《Chinese Physics Letters》 SCIE EI CAS CSCD 2026年第1期9-16,共8页
We report the results of the experiment on synthesizing 287,288Mc isotopes (Z=115) using the fusionevaporation reaction 243Am(48Ca,4n,3n)287,288Mc at the Spectrometer for Heavy Atoms and Nuclear Structure-... We report the results of the experiment on synthesizing 287,288Mc isotopes (Z=115) using the fusionevaporation reaction 243Am(48Ca,4n,3n)287,288Mc at the Spectrometer for Heavy Atoms and Nuclear Structure-2(SHANS2),a gas-filled recoil separator located at the China Accelerator Facility for Superheavy Elements(CAFE2).In total,20 decay chains are attributed to 288Mc and 1 decay chain is assigned to 287Mc.The measured oa-decay properties of 287,288Mc as well as its descendants are consistent with the known data.No additional decay chains originating from the 2n or 5n reaction channels were detected.The excitation function of the 243Am(48Ca,3n)288Mc reaction was measured at the cross-section level of picobarn,which indicates the promising capability for the study of heavy and superheavy nuclei at the facility. 展开更多
关键词 spectrometer heavy atoms fusionevaporation reaction China Accelerator Facility Superheavy Elements production decay chains isotopes ca am reaction mc
暂未订购 下载PDF
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
上一页 1 2 … 10 下一页 到第 页
在线咨询 使用帮助 返回顶部 意见反馈