Results 221 to 230 of about 766,537 (359)

Fatigue Limit Doubling in High‐Strength Martensitic Steel through Crack Embryo Engineering–Cyclic‐Training‐Driven Self‐Optimization

open access: yesAdvanced Science, EarlyView.
This study demonstrates a breakthrough in overcoming the conventional fatigue limit ceiling in high‐strength as‐quenched martensitic steel; maximum stress corresponding to the fatigue limit significantly increased from 675 to 1300 MPa with minimal sacrifice in tensile strength (1.5–1.6 GPa).
Kazuho Okada   +3 more
wiley   +1 more source

Water Management Fault Diagnosis by Operando Distribution of Relaxation Times Analysis for Anion Exchange Membrane Fuel Cells

open access: yesAdvanced Science, EarlyView.
An in situ characterization platform is established for water management and fault diagnosis in AEMFCs by employing the relaxation time method to analyze electrochemical impedance spectra. This approach identifies the characteristic frequency ranges of ionic, charge, and reactant transport resistances, enabling quantitative diagnosis of water transport
Haodong Huang   +9 more
wiley   +1 more source

Ambient‐Pressure Superconductivity Onset at 10 K and Robust Tc under High Pressure in TiNbTaN3 Medium‐Entropy Nitride

open access: yesAdvanced Science, EarlyView.
The first observation of superconductivity in a bulk MEN TiNbTaN3 with Tc ≈ 10 K at ambient pressure and the electronic specific heat coefficient γ(H) exhibits nonlinear H‐dependence behavior, which is similar to other well‐studied multigap superconductors is reported.
Lingyong Zeng   +9 more
wiley   +1 more source

Quantum Thermalization Dynamics of Fermi Gases Quenched to the BEC‐BCS Crossover

open access: yesAdvanced Science, EarlyView.
This study, reporting the first experimental realization of interaction quench far faster than the Fermi timescale in fermionic many‐body systems, explores real‐time quantum thermalization dynamics in the BEC‐BCS crossover. It observes prethermal states with distinct lifetimes after quantum quench, uncovers universal prethermal scaling, and observes ...
Licheng Yi   +4 more
wiley   +1 more source

Tidal Love numbers of neutron stars in f(R) gravity. [PDF]

open access: yesEur Phys J C Part Fields, 2018
Yazadjiev SS, Doneva DD, Kokkotas KD.
europepmc   +1 more source

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