Laser-initiated microchemistry in thin films: Development of new types of periodic structure
Decomposition of Au metallopolymer thin films induced by a scanning cw Ar+ laser leads to metallic features that, under a broad range of experimental conditions, exhibit marked periodic structure. Preliminary mechanistic studies point to a thermal decomposition pathway in which the heat released in the exothermic reaction drives the reaction front ahead of the laser-irradiated area. The spatial period is determined by laser power, scan speed, and film thickness. We argue that this mechanism is analogous to laser-initiated explosive phenomena observed in the recrystallization of amorphous semiconductors.
Publication Source (Journal or Book title)
Journal of Applied Physics
Fisanick, G., Gross, M., Hopkins, J., Fennell, M., Schnoes, K., & Katzir, A. (1985). Laser-initiated microchemistry in thin films: Development of new types of periodic structure. Journal of Applied Physics, 57 (4), 1139-1142. https://doi.org/10.1063/1.334557