K. Kuge et al., PREPARATION OF SILVER BROMIDE EMULSION GRAINS BY BELOUSOV-ZHABOTINSKYREACTION ON CONTINUOUS ADDITION OF SILVER-NITRATE SOLUTION, Journal of imaging science and technology, 41(6), 1997, pp. 594-599
In the Belousov-Zhabotinsky reaction system bromide ions are generated
periodically. When AgNO3 solution was added to this system, AgBr grai
ns were prepared and the periodical pBr oscillation was sustained duri
ng addition of the solution. In previous research we added drops of Ag
NO3 solution synchronously to the pBr oscillation. This time we added
AgNO3 solution by continuous flow and observed the pAg (pBr) oscillati
on and grain shapes. The periodical pAg oscillation was also sustained
. At some addition rates, dendrite grains with four, five, six, or eig
ht long branches were formed. In some grains, secondary nucleation too
k place on the surface of branches and many warts aligned. We believe
that the grain corners grew preferentially.