Tootfinder

This https://arxiv.org/abs/2409.07885 has been replaced.
initial toot: https://mastoxiv.page/@ar…

Towards Timetronics with Photonic Systems
Periodic driving of particles can create crystalline structures in their dynamics. Such systems can be used to study solid-state physics phenomena in the time domain. In addition, it is possible to realize photonic time crystals and to engineer the wave-number band structure of optical devices by periodic temporal modulation of the properties of light-propagating media. Here we introduce a versatile approach which uses traveling wave resonators to emulate various condensed matter phases in the …

Shear flow of frictional spheroids: lentil-like grains slide more than rice-like
Jacopo Bilotto, Martin Trulsson, Jean-Fran\c{c}ois Molinari
https://arxiv.org/abs/2507.04429

Shear flow of frictional spheroids: lentil-like grains slide more than rice-like
The rheology of dense granular shear flows is influenced by friction and particle shape. We investigate numerically the impact of non-spherical particle geometries under shear on packing fraction, stress ratios, velocity fluctuations, force distribution, and dissipation mechanisms, for a wide range of inertial numbers, friction coefficients and aspect ratios. We obtain a regime diagram for the dissipation which shows that lentil-like (oblate) particles exhibit an extended sliding regime compare…

Piezoelectric truss metamaterials: data-driven design and additive manufacturing
Saurav Sharma, Satya K. Ammu, Prakash Thakolkaran, Jovana Jovanova, Kunal Masania, Siddhant Kumar
https://arxiv.org/abs/2506.22451

Piezoelectric truss metamaterials: data-driven design and additive manufacturing
In the development of active animate materials, electromechanical coupling is highly attractive to realize mechanoresponsive functionality. Piezoelectricity is the most utilized electromechanical phenomenon due to the wide availability of materials that display precise and reliable coupling. However, the inherent directionality of these materials is constrained by the symmetry of their crystal structure, which limits the choice of available properties in natural piezoelectric materials. A solut…