[DIYbio] spin-coaters, coating things evenly in general

On Mon, Feb 4, 2013 at 10:19 PM, Marc Dusseiller <dusjagr@gmail.com> wrote:
> and spin coaters are useful... made one from pc-fan and old harddisc drives
> http://hackteria.org/wiki/index.php/Spin_Coater

So is there some kind of cohesive network action between the polymer
solution keeping the thickness uniform, or does in fact the thickness
of a spin-coated layer vary from the center to the outside edge
(molecules in center feel lower Gs than molecules at the
circumference)?

Would it make sense to spin-coat something on a plane parallel to the
axis of rotation? Like those carnival rides where you stand up against
the inner side of a circular wall, and the ride spins around pressing
you to the wall. Replace the wall with a flat piece of polished
aluminum, and you with some gel that you way to spread evenly.


--
-Nathan

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