Laser-initiated microchemistry: Dynamic probes of metallopolymer thin-film decomposition

Fisanick, G. J.; Hopkins, J. B.; Gross, M. E.; Fennell, M. D.; Schnoes, K. J.
June 1985
Applied Physics Letters;6/15/1985, Vol. 46 Issue 12, p1184
Academic Journal
Transient absorption has been used as a probe of the reaction kinetics in the laser-initiated thermal decomposition of Au metallopolymers. Feature sizes are considerably larger than the dimensions of the laser spot due to the propagation of a reaction front driven by the heat release from the highly exothermic reaction. Front velocities in the range of 30–50 cm/s are measured using spatially separated generating and probe lasers. These effects should be generalizable to any laser-driven thermal reaction in the condensed phase with sufficient heat release, and, as such, constitute a major limitation on feature size obtainable in these systems.


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