Method of Discrimination of Surface Fractality

✍ Scribed by Alexander V. Neimark; Klaus K. Unger

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 444 KB
• Volume: 158
• Category: Article
• ISSN: 0021-9797
• DOI: 10.1006/jcis.1993.1273

✦ Synopsis

A simple method for the discrimination of surface fractality is proposed. This method is based on the comparison of the nitrogen adsorption isotherm on a given sample with the "standard" isotherm on a smooth surface. The proposed comparative method makes it possible to determine the lower limit of the scale range of surface fractality. A thermodynamic method is recommended as a complement to fractal analysis in the scale range of about (10-1000 \AA). The results of the investigation of surface roughness are presented with examples of typical samples of silica gels, porous glasses, apatite, and coal. 1993 Academic Press, Inc.