Results 41 to 50 of about 404,116 (266)

Atomic‐Level Dual‐Cation Engineering Enables High‐Performance Na4VMn(PO4)3 Cathodes for Sodium‐Ion Batteries

Advanced Functional Materials, EarlyView.
Dual‐cation site engineering unlocks stable and fast sodium storage in Na4VMn(PO4)3 cathodes. Li+ at Na2 suppresses Jahn‐Teller distortion, while K+ at Na1 expands ion channels, enabling synchronized V/Mn redox and quasi‐single‐phase kinetics. This atomic‐level strategy achieves ultralong cycling stability, high‐rate capability, and full cell viability
Jiaze Sun, Xiaoyu Hu, Xianhe Meng, Nengjun Yu, Qiaoling Kang, Lijing Yan, Meiqiang Fan, Chubin Wan, Tingli Ma   +8 more
wiley   +1 more source

The Effect of Caputo Fractional Variable Difference Operator on a Discrete-Time Hopfield Neural Network with Non-Commensurate Order

Fractal and Fractional, 2022
In this work, we recall some definitions on fractional calculus with discrete-time. Then, we introduce a discrete-time Hopfield neural network (D.T.H.N.N) with non-commensurate fractional variable-order (V.O) for three neurons.
Rabia Chaimaà Karoun, Adel Ouannas, Mohammed Al Horani, Giuseppe Grassi   +3 more
doaj   +1 more source

Global bifurcation for the Whitham equation

, 2013
We prove the existence of a global bifurcation branch of $2\pi$-periodic, smooth, traveling-wave solutions of the Whitham equation. It is shown that any subset of solutions in the global branch contains a sequence which converges uniformly to some ...
Ehrnstrom, Mats, Kalisch, Henrik
core   +1 more source

Magnetism and Nonlinear Charge Transport in NiFe2O4/γ‐Al2O3/SrTiO3 Heterostructure: Toward Spintronic Applications

Advanced Functional Materials, EarlyView.
In this report, we demonstrate that a crystalline phase of 52nm thick NiFe2O4 can be grown by RF sputtering on top of γ‐Al2O3(8nm)/SrTiO3 at a significantly low temperature (150 °C) without compromising the mobility and carrier density of the 2D electron gas at the γ‐Al2O3(8nm)/SrTiO3 interface.
Amit Chanda, Thor Hvid‐Olsen, Christina Hoegfeldt, Anshu Gupta, Alessandro Palliotto, Fardin Ghaffari‐Tabrizi, Maja A. Dunstan, Kasper S. Pedersen, Dae‐Sung Park, Damon J. Carrad, Thomas Sand Jespersen, Felix Trier   +11 more
wiley   +1 more source

Another Case of Degenerated Discrete Chenciner Dynamic System and Economics

Mathematics, 2022
The non-degenerate Chenciner bifurcation of a discrete dynamical system is studied using a transformation of parameters which must be regular at the origin of the parameters (the condition CH.1 of the well-known treatise of Kuznetsov).
Sorin Lugojan, Loredana Ciurdariu, Eugenia Grecu   +2 more
doaj   +1 more source

A blue sky catastrophe in double-diffusive convection

, 2004
A global bifurcation of the blue sky catastrophe type has been found in a small Prandtl number binary mixture contained in a laterally heated cavity. The system has been studied numerically applying the tools of bifurcation theory.
E. Knobloch, Esteban Meca, Isabel Mercader, J. Bhattacharjee, J. Guckenheimer, J. Turner, L. Shilnikov, Laureano Ramírez-Piscina, Oriol Batiste, Y. Kuznetsov   +9 more
core   +1 more source

Rolling and Impacting Caustic Drops on Super Liquid‐Repellent Surfaces: In Situ Force and Energy Monitoring of Surface Degradation

Advanced Functional Materials, EarlyView.
The use of continuous drop‐based force and energy probing methods is introduced to evaluate in situ chemical degradation of super liquid‐repellent surfaces by caustic liquids. By tracking the velocity of rolling drops and energy dissipation of impacting drops, degradation dynamics are resolved under high spatio‐temporal precision. Using this technique,
Parham Koochak, Kai Liu, William S. Y. Wong   +2 more
wiley   +1 more source

Inclination Effect on the Periodic Response of a Symmetrical MEMS Gyroscope

Micromachines, 2022
The inclination effect caused by fabrication errors on the periodic response of a symmetric MEMS gyroscope is investigated. The dynamic equation is established considering the inclination effect on support stiffness and electrostatic forces. The periodic
Lijuan Zhang, Huabiao Zhang, Xinye Li, Yunxiao Ji   +3 more
doaj   +1 more source

Propagation Failure in Excitable Media

, 1997
We study a mechanism of pulse propagation failure in excitable media where stable traveling pulse solutions appear via a subcritical pitchfork bifurcation. The bifurcation plays a key role in that mechanism.
A. F. M. Maree, A. Hagberg, A. Hagberg, A. Hagberg, A. Hagberg, A. Hagberg, A. Karma, A. V. Holden, C. B. Muratov, C. Elphick, D. A. Kessler, E. M. Kuznetsova, E. Meron, E. Meron, H. Sevcikova, J. D. Dockery, J. J. Taboada, J. J. Tyson, M. Bär, M. Bär, M. Courtemanche, M. Markus, P. Coullet, P. Schütz, R. E. Goldstein, S. P. Dawson, T. Ohta   +26 more
core   +1 more source

Biointerface Membranes Orchestrating Site‐Specific Osteoimmunomodulatory and Antibacterial Effects for Enhanced Osseous Regeneration in Periodontal Therapy

Advanced Functional Materials, EarlyView.
Here, a biointerface membrane engineered with site‐specific interfacial properties is developed. During implantation between gingival and bone defect, the membrane creates a pro‐osteogenic microenvironment, precisely modulates cellular activities at each biointerface, and facilitates the orchestration of complex healing events, ultimately leading to ...
Yuwei Zhu, Tingting Wang, Jing Zhu, Bingtian Zhao, Bingyang Dai, Xiaoyue Zhang, Wei Liu, Cheng Yang, Cheng Dong, Ren Liu, Lei Zhao, Jun Wang, Peilei Shi, To Ngai   +13 more
wiley   +1 more source