Rotating temperature pulse during hydrogen oxidation on a nickel ring.
Rotating temperature pulse during hydrogen oxidation on a nickel ring.
复制标题
镍环上的氢氧化过程中的旋转温度脉冲。
作者：
Lane;Luss
反应-扩散相互作用在各种均匀活性化学介质中产生时空模式。了解这些图案如何受到介质不均匀性的影响是很有趣的。在这里，我们报告了在大气氢氧化过程中镍环的非均匀活性（即多晶）表面上旋转温度脉冲的首次观察。脉冲的振幅约为100 \ifmmode^\circ\else\textdegree\fi{}C，每565秒绕环一周。它的宽度、速度和最高温度在每个循环过程中都在变化，但在给定位置是恒定的。
Reaction-diffusion interactions generate spatiotemporal patterns in a variety of uniformly active chemical media. It is of interest to know how these patterns are affected by media nonuniformity. Here, we report the first observation of a rotating temperature pulse on a nonuniformly active (i.e., polycrystalline) surface of a nickel ring during atmospheric hydrogen oxidation. The pulse had an amplitude of about 100 \ifmmode^\circ\else\textdegree\fi{}C and completed one cycle around the ring every 565 s. Its width, velocity, and maximum temperature changed during each cycle, but were constant at a given position.