Triple lines

March 7, 2010

Did you also notice the explosion of papers dealing with triple lines in Scripta? Here are some more.

[1] The role of triple line in solid state microstructural evolutions: interplay with interfaces and consequences on instabilities and pattern selection

YvesS Brechet

The present contribution illustrates the role of the triple line in solid state microstructural evolution. In single phase materials, the role of the triple line in grain growth phenomena is discussed. In surface alloying, it is shown that the contact angle at the interface plays a key role on the kinetics of the process. In discontinuous precipitation, it is shown that the conditions at the triple line removes the degeneracy of the problem of spacing selection.

[2] Early Stages of Dissolutive Spreading

E Saiz et al

The initial instants of spreading in high-temperature dissolutive systems (Cu and Au on Ni) are recorded using high-speed video and a drop transfer set-up. The results suggest the existence of an initial regime where the advance of the triple junction is too fast compared with dissolution and spreading occurs on a flat unreacted surface. The analysis indicates that spreading is then controlled by the triple line friction. The calculated friction coefficients are similar to those for non-reactive high-temperature systems.

[3] Approaches to atomistic triple-line-properties from first principles

A Hashibon and C Elsaesser

Different approaches to study wetting and adhesion by applying density-functional theory (DFT) methods are highlighted. The ab-initio thermodynamics method is used to demonstrate the link between the calculated work of separation and the work of adhesion and wetting angles from sessile-drop measurements. An approach to extend DFT calculations to the case of large scale interfaces relevant for wetting systems is also discussed.

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: