Nano-Impact Electrochemistry: Single Nanoparticle Collision Spikes

Watch individual nanoparticles execute Brownian motion toward a microelectrode and fire a discrete current transient the instant each one collides — the stochastic "nano-impact" signal used to detect, size and characterise single nanoparticles one collision at a time. Switch between blocking (particles stick and mask electrode area), catalytic amplification (a transient rate boost, then the particle desorbs) and direct oxidation (the whole particle is electrolyzed and consumed) to see how each regime shapes the current spike train differently.