Colloquium: Dr. Francesco Caravelli | Los Alamos National Laboratory
In-Person PHYS 401
Wednesday, May 7, 2025 · 11 AM - 12 PM
TITLE: "Disordered System Approaches for Self-Assembling Neuromorphic Materials”
ABSTRACT: At the nanoscale, memory effects begin to emerge in the current-voltage characteristics of physical systems, allowing components to function as artificial synapses. This presentation explores the physics of self-assembled nanowires and nanoparticles, which form random configurations. Interactions at avoided crossings often exhibit memristive behavior. To understand their I-V characteristics, we apply a complex systems framework, treating the nonlinear and dynamic disordered components governed by Kirchhoff's laws. Using techniques from the statistical mechanics of disordered systems, we derive a mean field theory to describe their dynamical behavior, and demonstrate how techniques from random matrix theory offer valuable insights in this context.
ABSTRACT: At the nanoscale, memory effects begin to emerge in the current-voltage characteristics of physical systems, allowing components to function as artificial synapses. This presentation explores the physics of self-assembled nanowires and nanoparticles, which form random configurations. Interactions at avoided crossings often exhibit memristive behavior. To understand their I-V characteristics, we apply a complex systems framework, treating the nonlinear and dynamic disordered components governed by Kirchhoff's laws. Using techniques from the statistical mechanics of disordered systems, we derive a mean field theory to describe their dynamical behavior, and demonstrate how techniques from random matrix theory offer valuable insights in this context.
