Zobrazeno 1 - 10
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pro vyhledávání: '"Rizzi, G. A."'
This paper introduces for the first time the concepts of non-coherent interfaces and microstructure-driven interface forces in the framework of micromorphic elasticity. It is shown that such concepts are of paramount importance when studying the resp
Externí odkaz:
http://arxiv.org/abs/2401.01744
In this paper, we present a unit cell showing a band-gap in the lower acoustic domain. The corresponding metamaterial is made up of a periodic arrangement of this unit cell. We rigorously show that the relaxed micromorphic model can be used for metam
Externí odkaz:
http://arxiv.org/abs/2204.06930
Publikováno v:
International Journal of Solids and Structures, 2019, 176-177, 19-35
Positive definiteness and symmetry of the constitutive tensors describing a second-gradient elastic (SGE) material, which is energetically equivalent to a hexagonal planar lattice made up of axially deformable bars, are analyzed by exploiting the clo
Externí odkaz:
http://arxiv.org/abs/1908.01640
Publikováno v:
International Journal of Solids and Structures, 2019, 176-177, 1-18
A second-gradient elastic (SGE) material is identified as the homogeneous solid equivalent to a periodic planar lattice characterized by a hexagonal unit cell, which is made up of three different linear elastic bars ordered in a way that the hexagona
Externí odkaz:
http://arxiv.org/abs/1908.01568
Akademický článek
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Autor:
Rizzi, G. A., Cossaro, A., Petukhov, M., Sedona, F., Granozzi, G., Bruno, F., Cvetko, D., Morgante, A., Floreano, L.
We have measured the transformation of pseudomorphic Ni films on Pd(100) into their bulk fcc phase as a function of the film thickness. We made use of x-ray diffraction and x-ray induced photoemission to study the evolution of the Ni film and its int
Externí odkaz:
http://arxiv.org/abs/cond-mat/0401221
Autor:
Rizzi, G., Tartaglia, A.
Publikováno v:
Found.Phys.Lett. 12 (1999) 179-186
The paper shows that, conceptually and operationally, the speed of light as measured locally in the inertial comoving frame of a point on the rim of a rotating disk, is different from the one measured globally for a round trip along the rim, obtained
Externí odkaz:
http://arxiv.org/abs/gr-qc/9904028
Akademický článek
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Autor:
Rizzi, G., Tartaglia, A.
It is often taken for granted that on board a rotating disk it is possible to operate a \QTR{it}{global}3+1 splitting of space-time, such that both lengths and time intervals are \QTR{it}{uniquely} defined in terms of measurements performed by real r
Externí odkaz:
http://arxiv.org/abs/gr-qc/9805089
In the paper we calculate the frequency shift induced on a photon by the interaction with a low density electronic plasma. The technique is the standard perturbation theory of quantum electrodynamics, taking into account the many body character of th
Externí odkaz:
http://arxiv.org/abs/astro-ph/9703086