Chemistry Reference
In-Depth Information
Fig. 5.6
The formation of travelling waves when bilayer membranes are formed between oscillator
droplets. Each image is 5 s apart. The droplet diameter is 30
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Fig. 5.7
Demonstration of the influence of membrane coupling on an excitation wave in a larger
raft of droplets. The oil phase consists of squalane with 50 mM/l mono-olein. The aqueous phase
is 0.5 M sulphuric acid, 280 mM sodium bromate, 0.5 M malonic acid, and 3 mM ferroin.
a
The
droplet surfaces indicated by the
red arrow
are very close, but there has yet no membrane been
formed. The excitation wave (coming from below) passes around the
arrow
, the excitation does not
directly cross the gap between the two droplets.
b
After the membrane has formed, the excitation
wave passes through the site indicated by the
arrow
of such a wave of excitation (i.e., of a sudden increase in transmittance) which
propagates from bottom to top in a moderately dense raft of droplets. The top and
bottom row each shows a time lapse representation of a single excitation wave. The
