The adsorption of helium on spherical cavities is investigated employing finite range density functional theory. It is known that for films outside spherical walls, a growth instability occurs above a critical film thickness. This instability may be overcome by stable capillary condensation inside the gap between an inner sphere and an outer spherical cavity bounded by spherical graphene, metallic sheets and voids in bulk metals. When a C60 fullerene is placed at the center of the spherical well, one can observe the competition between the formation of helium shells on the walls and the attraction of the opposite adsorbing field. © Springer Science+Business Media, Inc. 2005.
Documento: | Artículo |
Título: | Growth of helium shells inside spherical adsorbers |
Autor: | Hernández, E.S. |
Filiación: | Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina |
Palabras clave: | Adsorption; Film growth; Fullerenes; Mathematical models; Probability density function; Capillary condensation; Density functional theory; Helium adsorption; Helium shells; Superfluid helium |
Año: | 2005 |
Volumen: | 138 |
Número: | 1-2 |
Página de inicio: | 241 |
Página de fin: | 246 |
DOI: | http://dx.doi.org/10.1007/s10909-005-1557-z |
Título revista: | Journal of Low Temperature Physics |
Título revista abreviado: | J. Low Temp. Phys. |
ISSN: | 00222291 |
CODEN: | JLTPA |
Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00222291_v138_n1-2_p241_Hernandez |