Neuromorphic systems are entities that have abilities that mimic the way the human brain works, one of the most complex systems that we know of. Randomly self-assembled nanowire networks (NWNs) are dynamical systems which have demonstrated brain-like abilities such as remembering stimulus and performing in-situ computations. While there are many models for NWNs, ones which have memristive...
The collapse of large-diameter, chiral, single-walled carbon nanotubes (SWCNTs) can form bilayer-like ribbons, characterized by quasi-one-dimensional (1D) moiré superlattices and exotic electronic behavior. Using analytical treatments of diameter, chirality, and moiré twist angles, we demonstrate that the moiré wavelength approximates the width of the collapsed SWCNT, producing quasi-1D moiré...
The interplay between electron charge, spin, and ferroelectric polarization is under-explored for conducting ferroelectric domain walls. We investigated the electronic band structures of $t_{2g}$ electrons, confined to charged 90$^\circ$ domain walls in barium titanate ($BaTiO_3$), a prototypical perovskite ferroelectric. A key novel aspect of our study is the explicit inclusion of both...
Metallic ceramic fuels, for example, UN, are very interesting materials as their thermal conductivity remains high even at very high temperatures due to significant electronic heat transport. They are important because urania fuel, which is used in conventional nuclear reactors, is not the optimum option for some designs of new-generation reactors due to its low thermal conductivity. U-density...
The coalescence of liquid drops is a well-studied and ubiquitous natural phenomenon central to many industrial processes. We study the physics of a granular analogue of this process through the coalescence of particle rafts in which individual particle rearrangements can be directly observed. In the experiments, a pair of two-dimensional bidisperse rafts of microscopic oil droplets are...
The formation of memory in jammed, disordered systems through cyclic global deformation has been observed in both simulations and experiments in recent years. Using a novel experimental approach, we demonstrate that local deformations can also drive memory formation. In our setup, we create a bidisperse aggregate of frictionless, cohesive oil droplets confined to a 2D coral. A single intruding...
