Kline, Timothy R. Sen, Ayusman Reversible Pattern Formation through Photolysis We report a photolytic method to induce spatial and temporal patterning/deposition of particles at the micron scale on a time scale of seconds. Reversible pattern formation by negatively charged particles occur around micron-sized silver features on different substrates when exposed to UV light in the presence of aqueous hydrogen peroxide. Diffusiophoretic motion due to a spatially defined ion gradient accounts for our observations. Atomic force and optical microscopy, as well as conductivity measurements, support this hypothesis. ion gradient accounts;presence;hydrogen peroxide;Diffusiophoretic motion;patterning;Reversible pattern formation;time scale;Atomic force;substrate;UV light;conductivity measurements;microscopy;Photolysi;photolytic method;micron scale;hypothesis;Reversible Pattern Formation 2006-08-15
    https://acs.figshare.com/articles/media/Reversible_Pattern_Formation_through_Photolysis/3371830
10.1021/la061165+.s003