| Abstract Scope |
This presentation introduces Electro-Nano-Pulsing (ENP), an innovative field-assisted materials processing technology that enables nanoscale grain boundary engineering through ultra-intense, high-frequency electric pulses. ENP operates via sub-microsecond pulses at extremely high current densities, inducing localized Joule heating, intense electric fields, and electron wind effects. These synergistic phenomena drive targeted modification of grain boundary morphology, dislocation generation, nanocoating formation, and electromigration-induced precipitation - while preserving the structural integrity of grain interiors. Both experimental and computational results confirm unique capabilities of ENP, including grain boundary roughening, nanomelting, and formation of stable intermetallic precipitates. Unlike conventional thermomechanical approaches, ENP achieves quasi-instantaneous, non-equilibrium microstructural control at unprecedented spatial and temporal resolution. This novel technique offers transformative potential for tailoring material properties in structural, electronic, and energy applications. Broader implications include enhanced fatigue and corrosion resistance, improved thermal management, and superior electrochemical performance in high-demand environments such as aerospace, semiconductors, and advanced energy systems. |