This is a lecture from the Nanomanufacturing course at the University of Michigan, taught by Prof. John Hart. For more information, see www.mechanosynthesis.com.
It seems this could apply to ultra sonic nebulizer water droplets with the inner particles being gold and weyl semimetal superconductors. If these droplets have a photonic wave and a Quantum Hall Effect through a magnetic field is applied, so that the resulting electron emitted could perhaps produce a hydrogen gas cloud.