Model for Interpretation and Correlation of Contact Angle Measurements

✍ Scribed by Faruk Civan

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 109 KB
• Volume: 192
• Category: Article
• ISSN: 0021-9797
• DOI: 10.1006/jcis.1997.4991

✦ Synopsis

ARTICLE NO. CS974991 NOTE Model for Interpretation and Correlation of Contact Angle Measurements cos u 0 Å mq 0 / a, [4] An improved formulation relating the contact angle to the surcos u ϱ Å mq ϱ / a. [5] face coverage is presented and verified. The Ohmi et al. data (Particle Sci. Technol. 7, 229, 1993) for ultracleaning of wafer Extending the approach of Civan et al. (3), the rate of surface coverage surfaces are analyzed and correlated mathematically. It is shown reduction by removal of material from a solid surface can be expressed in that the new formulation represents the Ohmi et al. and Engla ¨nder terms of two driving factors: (1) the flux, j, of the species displacing this et al. (J. Colloid Interface Sci. 179, 635, 1996) data satisfactorily.

material and (2) the deviation of the instantaneous surface coverage, q,

In addition, the present study provides some insight into the mechfrom its terminal value, q ϱ . Thus, the following rate equation is proposed:

anism of the variation of the surface coverage and the contact angle. ᭧ 1997 Academic Press 0dq/dt Å kj a (q 0 q ϱ ).