An experimental investigation of inhomogeneities in resonant infrared matrix-assisted pulsed-laser deposited thin polymer films

Autor:	Ullas Gurudas, Jeff Corgan, Leon Hughes, Mishae Khan, D. M. Bubb, Michael R. Papantonakis, R. Andrew McGill, SunYong Yi
Rok vydání:	2010
Předmět:	chemistry.chemical_classification Materials science Infrared business.industry Scanning electron microscope Analytical chemistry Evaporation General Chemistry Polymer Surface finish Laser law.invention chemistry law Surface roughness Optoelectronics General Materials Science Thin film business
Zdroj:	Applied Physics A. 100:523-531
ISSN:	1432-0630 0947-8396
DOI:	10.1007/s00339-010-5854-2
Popis:	Thin polymer films are deposited using matrix-assisted pulsed-laser evaporation and subsequently are characterized by scanning electron and atomic force microscopies. An Er : YAG laser (2937 nm, 350 μs) is used as a light source and the effect of the energy density supplied by the laser on the morphology of the deposited films is investigated. It is found that the appearance of undesirable non-uniform morphological features arises from either poor solubility of the guest molecules or insufficient energy density provided by the laser to vaporize the entire ejected volume. In addition, the surface roughness of two guest–host systems is found to depend linearly on the polymer concentration. These results allow us to better understand earlier work in the field and to establish a framework by which MAPLE films may be improved.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::625bb6b28b61d87264b17e2157dbe624 https://doi.org/10.1007/s00339-010-5854-2 Zobrazit plný text záznamu Plný text ve formátu PDF