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Tunable topological edge modes in Su-Schrieffer-Heeger arrays

Autor: Chaplain, G. J., Gliozzi, A. S., Davies, B., Urban, D., Descrovi, E., Bosia, F., Craster, R. V.

Publikováno v: Appl. Phys. Lett. 122, 221703 (2023)

A potential weakness of topological waveguides is that they act on a fixed narrow band of frequencies. However, by 3D printing samples from a photo-responsive polymer, we can obtain a device whose operating frequency can be fine-tuned dynamically usi

Externí odkaz: http://arxiv.org/abs/2408.09575

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First-principles study of strain behavior in iron-based fluorides of tungsten bronze type as cathode materials for alkali-ion batteries

Autor: Baumann, A. F., Mutter, D., Urban, D. F., Elsässer, C.

Publikováno v: Phys. Rev. Materials 8, 095401 (2024)

Mechanical stresses and strains in the microstructure of cathode materials evolving during charge/discharge cycles can reduce the long-term stability of intercalation-type alkali-metal-ion batteries. In this context, crystalline compounds exhibiting

Externí odkaz: http://arxiv.org/abs/2406.16677

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First-principles analysis of the interplay between electronic structure and volume change in colquiriite compounds during Li intercalation

Autor: Baumann, A. F., Mutter, D., Urban, D. F., Elsässer, C.

Publikováno v: Physical Review B 108, 165140 (2023)

A main source of capacity fading in lithium-ion batteries is the degradation of the active cathode materials caused by the series of volume changes during charge and discharge cycles. The quaternary colquiriite-type fluorides Li$_x$CaFeF$\mathrm{_6}$

Externí odkaz: http://arxiv.org/abs/2306.17029

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