
50:51
why there is no azimuthal stretch when we pull radially? circumference has to change too

01:05:32
is there any chemical gradient over thickness?

01:07:11
why we should then think of gluing cones or cylinders if it is flat?

01:12:08
How is the BZ catalyst bonded to the hydrogel? Chemically or sterically?

01:16:55
what happens if you put solid islands dotting the disk