Emergent reaction-diffusion phenomena in capillary tubes.
Pattern formation in the Belousov-Zhabotinsky reaction experiments carried out by filling capillary glass tubes with catalyst-immobilized gel for the reaction is reported. Under unperturbed and oscillatory conditions, helicoidal waves appear spontaneously. Quantitative structural data of those helices are obtained by devising an optical tomography technique for extracting rotationally symmetric structures from time-lapse data. Space-time representation of the catalyst oxidation reveals wave transmission phenomenon that is studied further by numerical simulations of a reduced spatial model.
Kettunen
Petteri
P
Nanotechnology Research Institute, National Institute of Advanced Industrial Science and Technology, AIST Central 5-2, Higashi 1-1-1, Tsukuba, Ibaraki 305-8565, Japan.
Yamaguchi
Tomohiko
T
Hashimoto
Hajime
H
Amemiya
Takashi
T
Steinbock
Bettina
B
Müller
Stefan C
SC
D000818:Animals; D001703:Biophysics / Q000379:methods*; D002384:Catalysis; D004058:Diffusion; D005898:Glass; D006801:Humans; D021621:Imaging, Three-Dimensional; D018715:Microscopy, Video; D008956:Models, Chemical; D008962:Models, Theoretical; D009206:Myocardium / Q000473:pathology; D017711:Nonlinear Dynamics; D009991:Oscillometry; D012815:Signal Processing, Computer-Assisted; D014057:Tomography, X-Ray Computed / Q000379:methods