Several additives or organic charges can be employed as nucleation sites
in polymer foaming processes [4, 5],
These nucleation sites
are stereocomplex crystallites with 31 helix in conformation and surrounded by a PLLA crystalline phase.
This disruption enables the inorganic matter to break down while eliminating the nucleation sites
that provide attachment spots for biofilms.
We propose several possible templates for crystal growth, control of nucleation sites
and new techniques to impose gradients in supersaturation of the environment from which the molecules condense in a growing crystal.
The early work quoted above considered that nucleation sites
were uniform randomly located in space, or more precisely, that nuclei were located in space according to a homogeneous Poisson point process.
The presentation touched on factors affecting the interactions between inoculant and molten metal in forming nucleation sites
The nucleation sites
are intrinsically there at the material interfaces.
The effects of premature nucleation sites
inherent on contacting surface can be eliminated either by superheating liquid droplet in an immiscible liquid of high boiling point or by heating the contacting surface with the test liquid rapidly so that the heat transfer to the liquid exceeds the latent heat of vaporization of the liquid (known as pulse heating method with fine platinum wires) as described by Skripov (1974).
For this purpose in  low MM PEs were emulsified to separate the nucleation from the growth process and to remove macroscopic heterogeneous nucleation sites
Keywords: heat transfer, two-phase fluids, nucleate boiling, artificial nucleation sites
, vapor bubbles, drift flow, PIV experimental method.
It is this particle suspension that sets up nucleation sites
on the surface in a way that a uniform tight dense coating forms on all the surfaces being treated.
This indicated that many nucleation sites
were available for the bubbles to form on the heating element.