ABSTRACT
As introduced in Chapter 3, Axisymmetric Drop Shape Analysis (ADSA) is a surface tension and contact angle measurement methodology based on drop shape analysis. ADSA determines the surface tension and contact angle from the experimental profile of drops or bubbles by means of computational parameter optimization. The drop/bubble profile can be obtained from a digital image either by manual digitization or by automatic image analysis. However, manual digitization suffers from several serious limitations: it is very time-consuming, the accuracy of the digitization is low, and much depends on the operator skill. Moreover, if photographic negatives or prints are involved in the manual digitization, there are storing problems as the prints may shrink, warp, or the contrast may fade after a period of time.
