3 papers
math.SP2026
Spectral and Isoperimetric Bounds on Flat Tori
Emanuel Milman
We record several elementary relations between spectral and isoperimetric parameters of a flat torus and the covariance structure of a fundamental do…
cond-mat.mtrl-sci2026
Ferroelastic exciton splitting in hybrid perovskite nanowalls
Afreen, J. Delgado-Alvarez, H. Krishna Mishra +9
Hybrid metal-halide perovskites are soft semiconductors in which electronic excitations are strongly influenced by lattice distortions and structural phase transitions. An importan…
cond-mat.mtrl-sci2025
Unlocking the hybrid piezo and pyroelectric nanogenerators performance by SiO2 nanowires confinement in poly(vinylidene fluoride)
Juan Delgado-Alvarez, Hari Krishna Mishra, Francisco J. Aparicio +5
We report on the development of a novel flexible piezo/pyro-electric nanogenerator (PPNG) that combines a uniform film of poly(vinylidene fluoride) (PVDF) infiltrated over vertical…