Fields of expertise : dislocation dynamics, structural phase transitions, mechanical and tribological properties at nanoscale, mechanical properties of vibrated granular materials, mechanical spectroscopy, cosmology.
See:
https://gerardgremaud.ch/
https://www.researchgate.net/profile/G_Gremaud?ev=hdr_xprf
http://mechanical-spectroscopy.epfl.ch/page-71047.html

Fields of expertise : dislocation dynamics, structural phase transitions, mechanical and tribological properties at nanoscale, mechanical properties of vibrated granular materials, mechanical spectroscopy, cosmology.
See:
https://gerardgremaud.ch/
https://www.researchgate.net/profile/G_Gremaud?ev=hdr_xprf
http://mechanical-spectroscopy.epfl.ch/page-71047.html

Theory of the CRISTALLINE ETHER

Universe and Matter Conjectured as a Three-Dimensional Lattice with Topological Singularities
One of the fundamental problems of modern physics is the search for a Theory of Everything, capable of explaining the nature of space-time, what matter is and how matter interacts. There are many proposals, such as the "Grand Unification", Quantum Gravity, Quantum Loop Gravitation, String and Superstring Theories, Supersymmetry and M-Theory. However, none of these approaches is yet capable of consistently explaining electromagnetism, relativity, gravitation, quantum physics and observed elementary particles all at the same time.
By developing a complete theory of solid lattice deformation in Euler coordinates, we find that it can be used to describe the space-time evolution of the Universe, in place of general relativity. In this way, it is suggested that the Universe could be a three-dimensional, elastic and massive lattice, described in absolute space by Euler coordinates, and that the fundamental components of Ordinary Matter could consist of topological singularities of this lattice, namely various loops of dislocation, disclination and dispiration. We thus find that, for an isotropic lattice obeying Newton's law, with very specific elastic properties, the behaviors of this lattice and its topological defects obey "all" known physics. Indeed, this theory of the crystalline ether intrinsically contains and enables direct deduction of the various formalisms of electromagnetism, special relativity, general relativity, gravitation and quantum physics. It also provides simple answers to long-standing questions in modern physics, such as the expansion of the universe, the big bang, dark matter and energy, particle spin and quantum decoherence.
But above all, it introduces a completely new scalar charge, the curvature charge, which has no analogue in modern physics theories, reveals a very slight deviation from Einstein's principle of equivalence between gravitational mass and inertial mass, and provides a simple explanation of the weak asymmetry between matter and antimatter, the origin of the weak interaction force, the formation of galaxies, the disappearance of antimatter from the universe, the formation of gigantic black holes at the heart of galaxies, and the nature of the famous dark matter.
What's more, by describing the crystalline ether in this new version as a face-centered cubic lattice with axial symmetries, we've been able to identify a lattice structure whose looping topological defects coincide perfectly with the complex zoology and behavior of elementary particles, and which enables us to explain physically and quite simply the nature of the weak and strong forces, the existence of three families of particles in the Standard Model and the asymptotic behavior of the strong force.