INVESTIGADORES
BEA Edgar Alejandro
artículos
Título:
How many Langmuirs are required for monolayer formation?
Autor/es:
EDGAR A. BEA; I. M. IRURZUN; EDUARDO E. MOLA
Revista:
LANGMUIR
Referencias:
Año: 2005 vol. 21 p. 10871 - 10873
ISSN:
0743-7463
Resumen:
In the present work, we provide the exact answer to the title question employing a probabilistic approach.
The average number of Langmuirs <L> required for monolayer formation was found to be equal to (1/i),
i.e., the armonic series up to the nth term, where n is the number of adsorption sites. This result is
particularly useful when a reduced number of adsorption sites is considered, such as adsorption on small
terraces of nanoscopic dimensions where the value of n could be in the range of a few thousands sites. In
this case, the use of integrated equations derived from the mean-field approach would provide completely
misleading results.