The small deviation of the contact angle and the contact ratio values of the system from the theoretical values may be attributed to the accuracy of ADSA-P that becomes more significant for low contact angle values.
Special thanks are extended to Daniel Kwok of the Nanoscale Technology and Engineering Laboratory, University of Alberta, AB, Canada, for the use of the ADSA-P technique.
1]H NMR, ADSA-P, LFM, and XPS, to investigate the effects of co-catalyst and reaction temperature, and the surface characteristics of the hydrosilylated polypropylenes.
Static sessile drop experiments of ADSA-P could be employed.
Sessile drop contact angle measurements using ADSA-P could be performed as a function of time.
where [gamma] is the surface tension: R is the radius of the curvature at the apex, which can be obtained from the ADSA-P image analysis; [rho] is the density of the liquid; h is the height of the sessile drop, and g is the gravitational acceleration (9.
Sessile drop experiments were performed by ADSA-P to determine contact angles.
Since ADSA-P determines the contact angle and the three-phase contact radius simultaneously for each image, the advancing dynamic contact angles as a function of the three-phase contact radius (i.
It can be seen that initially the apparent drop volume, as perceived by ADSA-P, increases linearly, and [Theta] increases from 35 [degrees] to 60 [degrees] at essentially constant R.
They are summarized in Table 2 for the 6 liquids with constant contact angles, at different rates of advancing and each on a newly prepared surface; a total of more than 70 freshly prepared PS-coated wafers were prepared and used; more than 4000 images were acquired and analyzed by ADSA-P.
This thought can be examined since in addition to [Gamma], ADSA-P also calculates the drop surface area, A, for each picture.
Advancing contact angles were measured by ADSA-P by pumping liquids into the sessile drop from below (28).