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Constructing highly efficient Z⁃scheme MIL⁃101(Fe)/Cu2O heterojunction photocatalysts by interface coupling and their mechanism for tetracycline degradation 认领 引用
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作者 WANG Junli JING Miaomiao +4 位作者 LIU Danyang DAI Yurun ZHAO Qiang LI Zuopeng GUO Yong 《无机化学学报》 SCIE CAS CSCD 北大核心 2026年第7期1555-1565,共11页
A series of MIL-101(Fe)/Cu2O heterojunction photocatalysts was successfully constructed by coupling highly active dodecahedral Cu2O with MIL-101(Fe)through a co-precipitation method.The catalytic performance of ... A series of MIL-101(Fe)/Cu2O heterojunction photocatalysts was successfully constructed by coupling highly active dodecahedral Cu2O with MIL-101(Fe)through a co-precipitation method.The catalytic performance of these materials was systematically evaluated under visible light using tetracycline as the target pollutant.The results indicated that when the mass fraction of MIL-101(Fe)was 20%,the composite material exhibited the best catalytic performance,with a tetracycline degradation rate of up to 87.37%after 100 min of illumination,significantly enhancing the photocatalytic degradation efficiency.The significant improvement in photocatalytic performance was mainly attributed to the tight interface coupling between the two components.Transient photocurrent response and electrochemical impedance spectroscopy(EIS)demonstrated that the introduction of MIL-101(Fe)greatly enhanced the electron conduction ability of the composite system and accelerated charge migration.On the other hand,X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS),transmission electron microscopy(TEM),UV-Visible diffuse reflectance spectra(UV-Vis DRS),and Mott-Schottky characterizations,combined with electron paramagnetic resonance(EPR)tests,confirmed the formation of an effective Z-scheme heterojunction between the two components.This Z-scheme heterojunction photocatalyst not only promotes the spatial separation of photogenerated electron-hole pairs but also retains the stronger redox ability of the composite material,thereby synergistically achieving efficient degradation of pollutants. 展开更多
关键词 photocatalysis interface coupling MIL-101(Fe)/Cu2O heterojunction Z-type mechanism antibiotic degradation
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Enhanced interface coupling accelerates charge transfer of a MoO2-x/Bi2MoO6 Schottky junction for CO2 photoreduction to CH4 认领 引用
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作者 Ming Meng Xi Wu +6 位作者 Qingqing Chai Hucheng Zhou Nan Qin Honglei Yuan Shufang Zhao Jin Liu Jun Li 《Rare Metals》 SCIE EI CAS CSCD 2025年第12期10271-10281,共11页
Artificial photosynthesis,converting CO2 and H2O into solar fuels,is considered as a strategic pathway to alleviate the greenhouse effect and the energy crisis.Nonetheless,in many heterojunction-based artificial... Artificial photosynthesis,converting CO2 and H2O into solar fuels,is considered as a strategic pathway to alleviate the greenhouse effect and the energy crisis.Nonetheless,in many heterojunction-based artificial photosynthetic systems,the CH4 productivity is significantly limited by poor carrier transport,narrow spectral light absorption,and lacking suitable active sites for the eightelectron reaction.Herein,a MoO2-x/Bi2MoO6(MO/BWO)Schottky junction with a strong interfacial coupling effect was fabricated by a two-step hydrothermal strategy.The optimized MO/BMO Schottky junction delivered a CO2-to-CH4 photoreduction rate of 23.3 μmol g-1 with 90.7%selectivity.In situ X-ray photoelectron spectroscopy and theoretical calculation demonstrated that BMO interacted with MO to produce a strong electron coupling effect and form a Schottky junction,which promoted the facilitated the directional migration of photogenerated electrons from BMO to MO with prolonging average photogenerated charge lifetime from 26.6 to 48.7 ps,but also effectively suppressed electron backflow through the Schottky barrier.Moreover,the coupling of MO with BMO significantly reduced the energy barrier of the rate-determining step.This work delves into the role of non-precious metal-based Schottky junction design in enhancing photocatalytic CO2 reduction performance,providing new insights into cocatalyst as active sites for CH4 generation in the CO2 photoreduction process. 展开更多
关键词 Interface coupling MoO2-x/Bi2MoO6 Schottky junction CO2reduction Photocatalysis
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Interface coupling induced electronic effect of NiCo-LDH/Cu2O heterojunction catalysts towards efficient electrochemical nitrate reduction to ammonia 认领 引用
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作者 Lei Li Qiuhan Cao +4 位作者 Xiaoyi Dong Xin Yu Hu Yao Shiqi Zeng Xiaohui Guo 《Science China Materials》 SCIE EI CAS CSCD 2025年第8期2742-2748,共7页
The electrocatalytic nitrate reduction reaction to ammonia(NO3RR)can reduce pollution and conserve energy,but current catalyst activity still fails to meet production requirements,primarily due to insufficient atomic ... The electrocatalytic nitrate reduction reaction to ammonia(NO3RR)can reduce pollution and conserve energy,but current catalyst activity still fails to meet production requirements,primarily due to insufficient atomic hydrogen(H*)supply and slow hydrogenation of oxynitride intermediates.This work leverages the strong nitrate adsorption capability of cuprous oxide(Cu2O)and interfacial coupling between NiCo layered double hydroxides(NiCo-LDH)and Cu2O to fabricate a nanocomposite catalyst(NiCo-LDH/Cu2O)via a facile hydrothermal method.By adjusting the metal ratio to modulate proton absorption behavior,the NiCo-LDH/Cu2O catalyst can achieve high ammonia yield(0.382 mmol h−1cm−2)and desired Faraday efficiency(80.4%).The experimental results demonstrate that the interfacial coupling interaction between NiCo-LDH and Cu2O induces optimal electronic effects,and then promotes the adsorption and activation of reaction intermediates,as well as optimizes the reaction pathway,and significantly enhances the electrochemical ammonia synthesis performance.Our constructed NiCo-LDH/Cu2O catalysis system provides a feasible strategy for the development of efficient and cost-effective NO3RR applications. 展开更多
关键词 NiCo-LDH nitrate reduction reaction ammonia synthesis interface coupling activity
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Monitoring and engineering interface coupling between monolayer WS2and substrate through controllably introducing interfacial strain 认领 引用 被引量：2
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作者 Xiaofei Yue Jiajun Chen +11 位作者 Jinkun Han Yabing Shan Shuwen Shen Wenxuan Wu Bingjie Liu Lijia Li Yu Chen Rongjun Zhang Laigui Hu Ran Liu Zhijun Qiu Chunxiao Cong 《Science China Materials》 SCIE EI CAS CSCD 2024年第9期3012-3020,共9页
The interface properties in two-dimensional(2D)layered materials and their van der Waals(vdW)homo-/heterostructures are of importance in both uncovering novel physical phenomena and optimizing device performance.Despi... The interface properties in two-dimensional(2D)layered materials and their van der Waals(vdW)homo-/heterostructures are of importance in both uncovering novel physical phenomena and optimizing device performance.Despite considerable research interest and enthusiasm direct toward the interlayer coupling in 2D homo-and heterostructures,there is limited research on the coupling at the 2D layered material-substrate interface.This limitation is due to the challenges in achieving direct detection.Currently,the coupling mechanisms at the 2D layered material-substrate interface is ambiguous,which needs greater attention.In this study,we have systematically investigated the interface coupling between monolayer WS2and its supported substrates using high-temperature and high-vacuum in-situ Raman spectroscopy through monitoring the low-frequency Raman mode of monolayer WS2.Our findings reveal that both interfacial spacing and strain can significantly affect the coupling strength between the monolayer WS2and the supported substrate.More notably,we found that the strategic introduction of appropriate interfacial strain can effectively enhance the interface coupling.Consequently,we have succeeded in achieving effective regulation of the sample-substrate coupling via a convenient way of controlling the cooling process during annealing.Our findings contribute to a deeper understanding of the coupling correlation between 2D layered materials and substrates,which is of great significance for the design and optimization of high-performance devices based on 2D layered semiconductors. 展开更多
关键词 two-dimensional layered material substrate interface coupling low-frequency Raman mode interfacial spacing interfacial strain
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Enhancing catalytic toluene oxidation over MnO2@Co3O4 by constructing a coupled interface 认领 引用 被引量：9
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作者 Quanming Ren Shengpeng Mo +8 位作者 Jie Fan Zhentao Feng Mingyuan Zhang Peirong Chen Jiajian Gao Mingli Fu Limin Chen Junliang Wu Daiqi Ye 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 北大核心 2020年第12期1873-1883,共11页
Herein,a bottom-down design is presented to successfully fabricate ZIF-derived Co3O4,grown in situ on a one-dimensional(1D)α-MnO2 material,denoted as α-MnO2@Co3O4.The synergistic effect derived from the coupled inte... Herein,a bottom-down design is presented to successfully fabricate ZIF-derived Co3O4,grown in situ on a one-dimensional(1D)α-MnO2 material,denoted as α-MnO2@Co3O4.The synergistic effect derived from the coupled interface constructed betweenα-MnO2 and Co3O4 is responsible for the enhanced catalytic activity.The resultantα-MnO2@Co3O4 catalyst exhibits excellent catalytic activity at a T90%(temperature required to achieve a toluene conversion of 90%)of approximately 229℃,which is 47 and 28℃ lower than those of the pureα-MnO2 nanowire and Co3O4-b obtained via pyrolysis of ZIF-67,respectively.This activity is attributed to the increase in the number of surface-adsorbed oxygen species,which accelerate the oxygen mobility and enhance the redox pairs of Mn^4+/Mn^3+ and Co^2+/Co^3+.Moreover,the result of in situ diffuse reflectance infrared Fourier transform spectroscopy suggests that the gaseous oxygen could be more easily activated to adsorbed oxygen species on the surface of α-MnO2@Co3O4 than on that of α-MnO2.The catalytic reaction route of toluene oxidation over theα-MnO2@Co3O4 catalyst is as follows:toluene→benzoate species→alkanes containing oxygen functional group→CO2 and H2O.In addition,the α-MnO2@Co3O4 catalyst shows excellent stability and good water resistance for toluene oxidation.Furthermore,the preparation method can be extended to other 1D MnO2 materials.A new strategy for the development of high-performance catalysts of practical significance is provided. 展开更多
关键词 MnO2@Co3O4 Toluene oxidation Synergistic effect Coupled interface In situ DRIFTS
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Enhanced ferroelectricity and ferromagnetism in Bi0.9Ba0.1FeO_3/La2/3Sr1/3MnO_3 heterostructure grown by pulsed laser deposition 认领 引用 被引量：3
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作者 温晓莉 陈钊 +5 位作者 林鑫 牛利伟 段萌萌 张云婕 董祥雷 陈长乐 《Chinese Physics B》 SCIE EI CAS CSCD 2014年第11期541-545,共5页
Bi0.9Ba0.lFeO3 （BBFO）/La2/3Srl/3MnO3 （LSMO） heterostructures are fabricated on LaA103 （100） substrates by pulsed laser deposition. Giant remnant polarization value （~ 85 μC/cm2） and large saturated magnetizat... Bi0.9Ba0.lFeO3 （BBFO）/La2/3Srl/3MnO3 （LSMO） heterostructures are fabricated on LaA103 （100） substrates by pulsed laser deposition. Giant remnant polarization value （~ 85 μC/cm2） and large saturated magnetization value （~ 12.4 emu/cm3） for BBFO/LSMO heterostructures are demonstrated at room temperature. Mixed ferroelectric domain structures and low leakage current are observed and in favor of enhanced ferroelectrie properties in the BBFO/LSMO het- erostructures. The magnetic field-dependent magnetization measurements reveal the enhancement in the magnetic moment and improved magnetic hysteresis loop originating from the BBFO/LSMO interface. The heterostructure is proved to be effective in enhancing the ferroelectric and ferromagnetic performances in multiferroic BFO films at room temperature. 展开更多
关键词 ferroelectric properties ferromagnetic properties Bio.9Bao.lFeO3/La2/3Srt/3MnO3 heterostruc-tures interface coupling effect
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Effect of initial phase on the Rayleigh–Taylor instability of a finite-thickness fluid shell 认领 引用
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作者 Hong-Yu Guo Tao Cheng +1 位作者 Jing Li Ying-Jun Li 《Chinese Physics B》 SCIE EI CAS CSCD 2022年第3期406-411,共6页
Rayleigh–Taylor instability(RTI) of finite-thickness shell plays an important role in deep understanding the characteristics of shell deformation and material mixing. The RTI of a finite-thickness fluid layer is stud... Rayleigh–Taylor instability(RTI) of finite-thickness shell plays an important role in deep understanding the characteristics of shell deformation and material mixing. The RTI of a finite-thickness fluid layer is studied analytically considering an arbitrary perturbation phase difference on the two interfaces of the shell. The third-order weakly nonlinear(WN) solutions for RTI are derived. It is found the main feature(bubble-spike structure) of the interface is not affected by phase difference. However, the positions of bubble and spike are sensitive to the initial phase difference, especially for a thin shell(kd < 1), which will be detrimental to the integrity of the shell. Furthermore, the larger phase difference results in much more serious RTI growth, significant shell deformation can be obtained in the WN stage for perturbations with large phase difference. Therefore, it should be considered in applications where the interface coupling and perturbation phase effects are important, such as inertial confinement fusion. 展开更多
关键词 Rayleigh–Taylor instability interface coupling effect inertial confinement fusion
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High-performance 1D CsPbBr3/CdS photodetectors 认领 引用 被引量：4
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作者 Zhi-Lin Xiang Qiu-Hong Tan +4 位作者 Ting Zhu Pei-Zhi Yang Yan-Ping Liu Ying-Kai Liu Qian-Jin Wang 《Rare Metals》 SCIE EI CAS CSCD 2024年第11期5932-5942,共11页
The emergence of all-inorganic perovskite CsPbBr3has ignited significant interest in optoelectronic devices,However,CsPbBr3thin film-based photodetectors face performance limitations due to grain boundaries and ... The emergence of all-inorganic perovskite CsPbBr3has ignited significant interest in optoelectronic devices,However,CsPbBr3thin film-based photodetectors face performance limitations due to grain boundaries and defect density.To address these challenges,we introduce a novel typeⅡheterojunction photodetector utilizing CsPbBr3micro wires(MWs)and CdS nanoribbons(NBs).Remarkably,this photodetector exhibits exceptional characteristics:a high on/off current ratio(1.07×105),a responsivity of up to 1.35×104A·W-1,specific detectivity of 5.94×1015Jones,external quantum efficiency of2.83×104%and rapid responseecovery time(400μs/3 ms).These superior performances stem from the exceptional crystalline quality of CsPbBr3MWs and CdS NBs,coupled with the establishment of a typeⅡband alignment at their interface.This configuration enables efficient carrier separation while suppressing recombination.Importantly,1D CsPbBr3MW/CdS NB heterojunction photodetectors demonstrate reliable imaging capabilities under visible light illumination.Our findings present an innovative solution for high-performance perovskite-based photodetectors,holding promise for future commercial applications. 展开更多
关键词 All-inorganic perovskite Photodetectors Interface coupling Electric charge transfer
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Modified two-grid method for solving coupled Navier-Stokes/Darcy model based on Newton iteration 认领 引用 被引量：1
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作者 SHEN Yu-jing HAN Dan-fu SHAO Xin-ping 《Applied Mathematics(A Journal of Chinese Universities)》 SCIE CSCD 2015年第2期127-140,共14页
A new decoupled two-gird algorithm with the Newton iteration is proposed for solving the coupled Navier-Stokes/Darcy model which describes a fluid flow filtrating through porous media. Moreover the error estimate is g... A new decoupled two-gird algorithm with the Newton iteration is proposed for solving the coupled Navier-Stokes/Darcy model which describes a fluid flow filtrating through porous media. Moreover the error estimate is given, which shows that the same order of accuracy can be achieved as solving the system directly in the fine mesh when h = H2. Both theoretical analysis and numerical experiments illustrate the efficiency of the algorithm for solving the coupled problem. 展开更多
关键词 Navier-Stokes equation Darcy＇s law interface coupling two-grid algorithm Newton iteration
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Ultra-Low-Dose Pre-Metallation Strategy Served for Commercial Metal-Ion Capacitors 认领 引用 被引量：14
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作者 Zirui Song Guiyu Zhang +9 位作者 Xinglan Deng Kangyu Zou Xuhuan Xiao Roya Momen Abouzar Massoudi Wentao Deng Jiugang Hu Hongshuai Hou Guoqiang Zou Xiaobo Ji 《Nano-Micro Letters》 SCIE EI CAS CSCD 2022年第3期276-291,共16页
Sacrificial pre-metallation strategy could compensate for the irreversible consumption of metal ions and reduce the potential of anode,thereby elevating the cycle performance as well as open-circuit voltage for full m... Sacrificial pre-metallation strategy could compensate for the irreversible consumption of metal ions and reduce the potential of anode,thereby elevating the cycle performance as well as open-circuit voltage for full metal ion capacitors(MICs).However,suffered from massive-dosage abuse,exorbitant decomposition potential,and side effects of decomposition residue,the wide application of sacrificial approach was restricted.Herein,assisted with density functional theory calculations,strongly coupled interface(M-O-C,M=Li/Na/K)and electron donating group have been put forward to regulate the band gap and highest occupied molecular orbital level of metal oxalate(M2C2O4),reducing polarization phenomenon and Gibbs free energy required for decomposition,which eventually decrease the practical decomposition potential from 4.50 to 3.95 V.Remarkably,full sodium ion capacitors constituted of commercial materials(activated carbon//hard carbon)could deliver a prominent energy density of 118.2 Wh kg−1as well as excellent cycle stability under an ultra-low dosage pre-sodiation reagent of 15-30 wt%(far less than currently 100 wt%).Noteworthily,decomposition mechanism of sacrificial compound and the relative influence on the system of MICs after pre-metallation were initially revealed by in situ differential electrochemical mass spectrometry,offering in-depth insights for comprehending the function of cathode additives.In addition,this breakthrough has been successfully utilized in high performance lithium/potassium ion capacitors with Li2C2O4/K2C2O4 as pre-metallation reagent,which will convincingly promote the commercialization of MICs. 展开更多
关键词 Coupled interface Pre-metallation Metal oxalate Decomposition potential
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Integration of 2D layered CdS/WO3 S-scheme heterojunctions and metallic Ti3C2 MXene-based Ohmic junctions for effective photocatalytic H2 generation 认领 引用 被引量：30
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作者 Junxian Bai Rongchen Shen +3 位作者 Zhimin Jiang Peng Zhang Youji Li Xin Li 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 2022年第2期359-369,共11页
The rapid recombination of photo-generated electron-hole pairs,insufficient active sites,and strong photocorrosion have considerably restricted the practical application of Cd S in photocatalytic fields.Herein,we desi... The rapid recombination of photo-generated electron-hole pairs,insufficient active sites,and strong photocorrosion have considerably restricted the practical application of Cd S in photocatalytic fields.Herein,we designed and constructed a 2D/2D/2D layered heterojunction photocatalyst with cascaded 2D coupling interfaces.Experiments using electron spin resonance spectroscopy,ultraviolet photoelectron spectroscopy,and in-situ irradiation X-ray photoelectron spectroscopy were conducted to confirm the 2D layered CdS/WO3 step-scheme(S-scheme)heterojunctions and CdS/MX ohmic junctions.Impressively,it was found that the strong interfacial electric fields in the S-scheme heterojunction photocatalysts could effectively promote spatially directional charge separation and transport between CdS and WO3 nanosheets.In addition,2D Ti3C2 MXene nanosheets with a smaller work function and excellent metal conductivity when used as a co-catalyst could build ohmic junctions with Cd S nanosheets,thus providing a greater number of electron transfer pathways and hydrogen evolution sites.Results showed that the highest visible-light hydrogen evolution rate of the optimized MX-Cd S/WO3 layered multi-heterostructures could reach as high as 27.5 mmol/g/h,which was 11.0 times higher than that of pure CdS nanosheets.Notably,the apparent quantum efficiency reached 12.0% at 450 nm.It is hoped that this study offers a reliable approach for developing multifunctional photocatalysts by integrating S-scheme and ohmic-junction built-in electric fields and rationally designing a 2D/2D interface for efficient light-to-hydrogen fuel production. 展开更多
关键词 Photocatalytic hydrogen evolution 2D layered S-scheme heterojunction CdS nanosheets WO3nanosheets Ti3C2MXene-based ohmic junctions Cascade 2D coupling interfaces
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The influence of interface exchange coupling on the demagnetization process for perpendicularly oriented FePt/α-Fe/FePt trilayers 认领 引用 被引量：4
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作者 BO Niao ZHAO GuoPing +2 位作者 YE LinNing XU JinSong DENG Ya 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS 2010年第10期1836-1841,共6页
The influence of the interface exchange coupling on the magnetization reversal process for a FePt/α-Fe/FePt tri-layer structure has been studied through a micromagnetic approach.The analytical formula of the nucleati... The influence of the interface exchange coupling on the magnetization reversal process for a FePt/α-Fe/FePt tri-layer structure has been studied through a micromagnetic approach.The analytical formula of the nucleation field has been derived.It is found that the nucleation field increases as the interface coupling constant rises.Especially when the thickness of the soft layer is small,the influence of the exchange coupling on the nucleation field is significant.The angular distributions of the magnetization for various exchange coupling constants have been obtained by numerical calculation.It is found that the angular distribution of the magnetization is discontinuous at the interface of the hard and soft layers.In the meantime,the pinning field decreases with the increase of the thickness of the soft layer and the exchange coupling constant. 展开更多
关键词 interface exchange coupling nucleation field coercivity micromagnetic calculation
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Coupling interface constructions of hollow Co-Mo mixed multiple oxidation states heterostructure for high-performance aprotic Li-O2 battery 认领 引用 被引量：2
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作者 Xingzi Zheng Mengwei Yuan +3 位作者 Jingshen Xu Zihan Li Caiyun Nan Genban Sun 《Nano Research》 SCIE EI CSCD 2024年第5期4100-4107,共8页
Constructing interfaces in heterostructures is effective for modulating the electronic properties of electrocatalysts.The hollow CoMoO4-Co3O4 heterostructure(HCMCH)was prepared as a bifunctional electrocataly... Constructing interfaces in heterostructures is effective for modulating the electronic properties of electrocatalysts.The hollow CoMoO4-Co3O4 heterostructure(HCMCH)was prepared as a bifunctional electrocatalyst for Li-O2 battery.The different components in CoMoO4-Co3O4 heterostructure presented the efficient coupling and enhanced the electrocatalytic activity for aprotic oxygen reduction reaction(ORR)and oxygen evolution reaction(OER),in which it improved the obviously reduced overpotential of 300 mV(compared with the pure Ketjen black(KB)electrode),enhanced reversibility of 80%capacity retention after 6 full cycles and the superior cyclability of more than 200 cycles with an optimized strategy.The battery performance of the HCMCH was not only associated with the unique hollow structure and rich active sites but also with coupling interface constructions synergetic effects attaching to the improving conductivity and optimized the discharge conversion.These results suggested that this HCMCH electrocatalyst was a promising candidate for the Li-O2 battery and it gave a novel insight for high performance electrocatalyst designing. 展开更多
关键词 Li-oxygen battery heterostructure electrocatalyst coupling interface
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Spin wave resonance frequency in bilayer ferromagnetic films with the biquadratic exchange interaction 认领 引用
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作者 Xiaojie Zhang Yuting Wang +3 位作者 Yanqiu Chang Huan Wang Jianhong Rong Guohong Yun 《Chinese Physics B》 SCIE EI CAS CSCD 2024年第9期607-613,共7页
The dependences of spin wave resonance(SWR)frequency on the surface anisotropy field,interface exchange coupling,symmetry,biquadratic exchange(BQE)interaction,film thickness,and the external magnetic field in bilayer ... The dependences of spin wave resonance(SWR)frequency on the surface anisotropy field,interface exchange coupling,symmetry,biquadratic exchange(BQE)interaction,film thickness,and the external magnetic field in bilayer ferromagnetic films are theoretically analyzed by employing the linear spin wave approximation and Green’s function method.A remarkable increase of SWR frequency,except for energetically lower two modes,can be obtained in our model that takes the BQE interaction into account.Again,the effect of the external magnetic field on SWR frequency can be increased by increasing the biquadratic to interlayer exchange ratio.It has been identified that the BQE interaction is of utmost importance in improving the SWR frequency of the bilayer ferromagnetic films.In addition,for bilayer ferromagnetic films,the frequency gap between the energetically highest mode and lowest mode is found to increase by increasing the biquadratic to interlayer exchange ratio and film thickness and destroying the symmetry of the system.These results can be used to improve the understanding of magnetic properties in bilayer ferromagnetic films and thus may have prominent implications for future magnetic devices. 展开更多
关键词 spin wave resonance frequency biquadratic exchange interaction interface exchange coupling surface anisotropy
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The First-Order Comprehensive Sensitivity Analysis Methodology (1st-CASAM) for Scalar-Valued Responses: II. Illustrative Application to a Heat Transport Benchmark Model 认领 引用
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作者 Dan Gabriel Cacuci 《American Journal of Computational Mathematics》 2020年第2期290-310,共21页
This work illustrates the application of the 1st-CASAM to a paradigm heat transport model which admits exact closed-form solutions. The closed-form expressions obtained in this work for the sensitivities of the temper... This work illustrates the application of the 1st-CASAM to a paradigm heat transport model which admits exact closed-form solutions. The closed-form expressions obtained in this work for the sensitivities of the temperature distributions within the model to the model’s parameters, internal interfaces and external boundaries can be used to benchmark commercial and production software packages for simulating heat transport. The 1st-CASAM highlights the novel finding that response sensitivities to the imprecisely known domain boundaries and interfaces can arise both from the definition of the system’s response as well as from the equations, interfaces and boundary conditions that characterize the model and its imprecisely known domain. By enabling, in premiere, the exact computations of sensitivities to interface and boundary parameters and conditions, the 1st-CASAM enables the quantification of the effects of manufacturing tolerances on the responses of physical and engineering systems. 展开更多
关键词 First-Order Comprehensive Adjoint Sensitivity Analysis Methodology (1st-CASAM) Response Sensitivities for Coupled Systems Involving Imprecisely Known Interfaces Parameters And Boundaries Coupled Heat Conduction and Convection
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Interface-facilitated energy transport in coupled Frenkel-Kontorova chains 认领 引用 被引量：2
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作者 Rui-Xia Su Zong-Qiang Yuan +1 位作者 Jun Wang Zhi-Gang Zheng 《Frontiers of physics》 SCIE CSCD 2016年第2期125-130,共6页
The role of interface couplings on the energy transport of two coupled Frenkel-Kontorova （FK） chains is explored through numerical simulations. In general, it is expected that the interface cou- plings result in the... The role of interface couplings on the energy transport of two coupled Frenkel-Kontorova （FK） chains is explored through numerical simulations. In general, it is expected that the interface cou- plings result in the suppression of heat conduction through the coupled system due to the additional interface phonon-phonon scattering. In the present paper, it is found that the thermal conductivity increases with increasing intensity of interface interactions for weak inter-chain couplings, whereas the heat conduction is suppressed by the interface interaction in the case of strong inter-chain couplings. Based on the phonon spectral energy density method, we demonstrate that the enhance- ment of energy transport results from the excited phonon modes （in addition to the intrinsic phonon modes）, while the strong interface phonon-phonon scattering results in the suppressed energy transport. 展开更多
关键词 interface couplings energy transport heat conduction phonon-phonon scattering,Frenkel-Kontorova （FK） chains excited phonon modes phonon spectral energy density
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Bioinspired ionic control for energy and information flow 认领 引用 被引量：2
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作者 Puguang Peng Han Qian +2 位作者 Jiajin Liu Zhonglin Wang Di Wei 《International Journal of Smart and Nano Materials》 SCIE EI 2024年第1期198-221,共24页
The control of ion transport by responding to stimulus is a necessary condition for the existence of life.Bioinspired iontronics could enable anomalous ion dynamics in the nano-confined spaces,creating many efficient ... The control of ion transport by responding to stimulus is a necessary condition for the existence of life.Bioinspired iontronics could enable anomalous ion dynamics in the nano-confined spaces,creating many efficient energy systems and neuromorphic in-sensor computing networks:Unlike tradi-tional electronics based on von Neumann computing architec-ture,the Boolean logic computing based on the iontronics could avoid complex wiring with higher energy efficiency and programmable neuromorphic logic.Here,a systematic summary on the state of art in bioinspired iontronics is pre-sented and the stimulus from chemical potentials,electric fields,light,heat,piezo and magnetic fields on ion dynamics are reviewed.Challenges and perspectives are also addressed in the aspects of iontronic integrated systems.It is believed that comprehensive investigations in bioinspired ionic control will accelerate the development on more efficient energy and information flow for the futuristic human-machine interface. 展开更多
关键词 lontronics nanoconfined ion transport ion dynamics bioinspired iontronics ionic-electronic coupling interface
A review on all-perovskite multiferroic tunnel junctions 认领 引用 被引量：3
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作者 Yuewei Yin Qi Li 《Journal of Materiomics》 SCIE 2017年第4期245-254,共10页
Although the basic concept was proposed only about 10 years ago,multiferroic tunnel junctions(MFTJs)with a ferroelectric barrier sandwiched between two ferromagnetic electrodes have already drawn considerable interest... Although the basic concept was proposed only about 10 years ago,multiferroic tunnel junctions(MFTJs)with a ferroelectric barrier sandwiched between two ferromagnetic electrodes have already drawn considerable interests,driven mainly by its potential applications in multi-level memories and electric field controlled spintronics.The purpose of this article is to review the recent progress of all-perovskite MFTJs.Starting from the key functional properties of the tunneling magnetoresistance,tunneling electroresistance,and tunneling electromagnetoresistance effects,we discuss the main origins of the tunneling electroresistance effect,recent progress in achieving multilevel resistance states in a single device,and the electrical control of spin polarization and transport through the ferroelectric polarization reversal of the tunneling barrier. 展开更多
关键词 Multiferroic tunnel junction Interface magnetoelectric coupling Tunneling electroresistance effect Multi-state memory
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