In both the canonical ensemble and grand canonical ensemble,the thermodynamic stability and phase structure of Einstein-Euler-Heisenberg-AdS black holes are *** derive the Hawking temperature,Helmholtz free energy,Gib...
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In both the canonical ensemble and grand canonical ensemble,the thermodynamic stability and phase structure of Einstein-Euler-Heisenberg-AdS black holes are *** derive the Hawking temperature,Helmholtz free energy,Gibbs potential,entropy and heat capacity of the black *** compute the minimum temperature to find that a phase transition may happen at the lowest *** entropy-temperature diagram consists of two *** upper part belonging to the large black holes under the influence from the electromagnetic self-interactions keeps the positive heat capacity,leading the huge compact objects to *** lower curves corresponding to small black holes show that the heat capacity of the tiny black holes is negative,which means that the nonlineareffect-corrected smaller sources will *** further discussions show that the nonlinear effect modifies the thermodynamic quantities,but the corrections limited by the nonlinear factorμwith allowed values can not change the properties and the phase structure fundamentally and *** argue that the influence from self-interaction can not make the Einstein-Euler-Heisenberg-AdS black holes to split under the second law of thermodynamics.
An approach to quantify the lifetime and mission reliability of multi-mode ion thruster is presented. The reliability of LIPS-300S thruster completing the Asteroid Exploration Mission is assessed. The procedure of thi...
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Recently, the synthesis of new elements above Z = 118 has been a hot topic in nuclear physics. Meanwhile, the α-decay chain is expected to be the unique tool to identify these heaviest nuclei. We have systematically ...
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Recently, the synthesis of new elements above Z = 118 has been a hot topic in nuclear physics. Meanwhile, the α-decay chain is expected to be the unique tool to identify these heaviest nuclei. We have systematically calculated the α-decay energies and half-lives on the same footing for superheavy nuclei (SHN) within the cluster model along with a slightly modified Woods-Saxon (W.S.) potential as the nuclear potential. Based on the available experimental data, the key radius parameter (R) in the α-core potential is determined via the systematic trend from the α-decay and isotopic chains. The α-decay energy (Qα) values and half-lives are then obtained simultaneously for those unknown SHN in the range of 117 ≤ Z ≤ 120, during which the decay width is obtained using a new treatment for the asymptotic behavior of the α-core wave function. The theoretical values and experimental data are found to be in excellent agreement for the nuclei ^(293,294)117 and ^(294)118 regardless of the method used to determine the R parameter. Predicting the α-decay chains for new elements Z = 119 and Z = 120 can be useful in ongoing or forthcoming experiments.
A 1-bit linearly polarized widedband high-efficiency reconfigurable transmit-array is proposed, consisting of magnetoelectric dipole and butterfly shaped metal patch. The 180° phase difference is achieved by cont...
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We study quantum synchronization under the nonequilibrium *** consider a two-qubit XXZ chain coupled independently to their own reservoirs modeled by the collisional *** reservoir particles,initially prepared in a the...
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We study quantum synchronization under the nonequilibrium *** consider a two-qubit XXZ chain coupled independently to their own reservoirs modeled by the collisional *** reservoir particles,initially prepared in a thermal state or a state with coherence,are correlated through a unitary transformation and afterward interact locally with the two quantum *** study the quantum effect of reservoir on synchronous dynamics of *** preparing different reservoir initial states or manipulating the reservoir particles coupling and the temperature gradient,we find that quantum entanglement of reservoir is the key to control quantum synchronization of system qubits.
Research on novel ultrafast photonic devices with wide adaptability has become important scientific technical means to realize both scheme innovation and performance breakthrough in fiber laser *** types of transition...
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Research on novel ultrafast photonic devices with wide adaptability has become important scientific technical means to realize both scheme innovation and performance breakthrough in fiber laser *** types of transition metal oxide,manganese dioxide(MnO_(2))materials exhibit remarkable properties including high photothermal stability,strong oxidation resistance,and excellent optical properties,making them promising candidate for utilization as modulation devices in nonlinear optics and ultrafast optics *** investigate the impact of MnO_(2)-based saturable absorber(SA)on the pulse *** experiment reveals that MnO_(2)-based SA supports effectively pulsed laser generation in wide pump power range and large dispersion parameter space with signal-to-noise ratio more than 85 *** far as we know,the pump power response range is outstanding among the most of the reported pulsed lasers,which is attributed to the large modulation depth of MnO_(2) *** also investigate the impact of dispersion on the characteristics of laser output,which is not involved in other similar *** research indicates that MnO_(2) as a photonic device has vast potential in advanced ultrafast optics.
In this study,we synthesized a series of ABA-type vitrimers by crosslinking the short A moieties of precursors with a bifunctional crosslinker and evaporating the small molecular *** vitrimer samples thus prepared exh...
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In this study,we synthesized a series of ABA-type vitrimers by crosslinking the short A moieties of precursors with a bifunctional crosslinker and evaporating the small molecular *** vitrimer samples thus prepared exhibit linear viscoelasticity dependent on the length of A moiety as well as the content of the *** the average number of A monomers per end moiety m=1.1,the crosslinker can only extend the chain but not crosslink the *** m becomes 2.8 or higher,introducing a crosslinker first leads to the gelation,whereas excess in crosslinker molecules leads opening of the crosslinking sites and accordingly reentry into the sol ***,a further increase in the length of the A moieties increases the relaxation time much weaker than the exponential increase seen for the physically crosslinked ABAtype *** attribute this difference to the distinct relaxation mechanisms:the relaxation of the vitrimer samples is based on relatively independent exchange reactions,which contrasts with the ABA-type ionomers that relax through the collective hopping of connected ionic groups from one ion aggregate to another.
Systemically angular and planar transport investigations are performed in layered antiferromagnetic(AF)V_(5)S_(8).In this AF system,obvious anomalous Hall effect(AHE)is observed with a large Hall angle of 0.1 compared...
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Systemically angular and planar transport investigations are performed in layered antiferromagnetic(AF)V_(5)S_(8).In this AF system,obvious anomalous Hall effect(AHE)is observed with a large Hall angle of 0.1 compared to that in ferromagnetic(FM)*** can persist to the temperatures above AF transition and exhibit strong angular field *** phase diagram reveals various magnetic states by rotating the applied *** analyzing the anisotropic transport behavior,magnon contributions are revealed and exhibit obvious angular dependence with a spin-flop vanishing *** observed prominent planar Hall effect and anisotropic magnetoresisitivity exhibit two-fold systematical angular dependent *** behaviors are attributed to the scattering from spin–orbital coupling instead of nontrivial topological *** results reveal anisotropic interactions of magnetism and electron in V5S8,suggesting potential opportunities for the AF spintronic sensor and devices.
Quantum heat transport is considered as an indispensable branch of quantum thermodynamics to potentially improve performance of thermodynamic *** theoretically propose a dissipative qubit-photon system composed of mul...
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Quantum heat transport is considered as an indispensable branch of quantum thermodynamics to potentially improve performance of thermodynamic *** theoretically propose a dissipative qubit-photon system composed of multiple coupled resonators interacting with a single two-level qubit,to explore the steady-state heat transport by tuning both the inter-resonator photon hopping and the qubit-photon *** in the three-mode case,the dramatic enhancement and suppression of the heat current into the central resonator can be modulated by the corresponding frequency,compared to the currents into two edge ***,fruitful cycle current components are unraveled at weak qubit-photon coupling,which are crucial to exhibit the nonmonotonic feature with increase of the reservoir temperature *** the one-dimensional case under the mean-field framework,the influence of the photon hopping on heat transport is *** steady-state heat current is comparatively enhanced to the single-mode limit at weak qubit-photon coupling,stemming from the nonvanishing mean-field photon excitation parameter and the additional cycle current *** hope these obtained results may have possible applications in quantum thermodynamic manipulation and energy harvesting.
Hot-swaging yields a high ultimate tensile strength of 712 MPa but a limited tensile ductility with the total elongation of3.6%at a testing temperature of 200℃in a representative W-0.5wt.%ZrC *** this work,the evolut...
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Hot-swaging yields a high ultimate tensile strength of 712 MPa but a limited tensile ductility with the total elongation of3.6%at a testing temperature of 200℃in a representative W-0.5wt.%ZrC *** this work,the evolution of Vickers microhardness with annealing temperatures is investigated in detail,which contributes to a rough index chart to guide the search for an optimized post-annealing *** the post-annealing around 1300℃,an outstanding tensile ductility at200℃,including a uniform elongation of 14%and a total elongation of~25%,has been achieved without the sacrifice of its *** evolution of dislocations and grain structures with the annealing temperatures accessed through backscattered scanning electron microscope and transmission electron microscope analysis reveals that the improved low-temperature tensile ductility has resulted from the reduction of residual dislocations and dislocation tanglement via the static recovery,which provides more room to accommodate dislocations,and hence stronger strain hardening ability and tensile ductility.
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