Controlling chemical oscillations in heterogeneous Belousov-Zhabotinsky gels via mechanical strain

Controlling chemical oscillations in heterogeneous Belousov-Zhabotinsky gels via mechanical strain.

We performed theoretical and computational studies to determine the effect of an applied mechanical strain on the dynamic behavior of heterogeneous polymer gels undergoing the oscillatory Belousov-Zhabotinsky (BZ) reaction. In these spatially heterogeneous gels, the catalyst for the reaction is localized in specific patches within the polymer network and the BZ reaction only occurs within these...

High-frequency oscillations in the Belousov-Zhabotinsky reaction.

Chemical oscillations in the classic Belousov-Zhabotinsky (BZ) system typically have a period of a few minutes, which can be increased significantly by changing the organic substrate. Here we show that by changing the temperature and concentrations, an increase of 3-4 orders of magnitude in the frequency of BZ oscillations can be obtained. At elevated temperatures, in high concentration mixture...

Convective chemical-wave propagation in the Belousov-Zhabotinsky reaction.

Morphogenesis in Belousov - Zhabotinsky microdroplets

Submitted for the MAR13 Meeting of The American Physical Society Morphogenesis in Belousov-Zhabotinsky microdroplets1 NING LI, NATHAN TOMPKINS, CAMILLE GIRABAWE, IRVING EPSTEIN, SETH FRADEN, Brandeis University, BRANDEIS/MRSEC TEAM — We present experimental evidence for the six cases Alan Turing predicted using linear stability analysis in his 1952 paper “The chemical basis of morphogenesis” in...

Mechanical Resuscitation of Chemical Oscillations in BelousovZhabotinsky Gels

The conversion of mechanical to chemical energy is a natural phenomenon that few synthetic materials have been able to mimic robustly. The fi rst demonstration of mechanical triggering of Belousov–Zhabotinsky (BZ) oscillations is presented in N -isopropylacrylamideco -Ru(bpy) 3 gels for which the oscillatory nature of the BZ reaction can be visualized via periodic changes in color. It is demons...