Inside Cover, Volume 34, Issue 24



The cover image shows one simulated ion channel, gramicidin A. The first row represents the triangular boundary mesh conforming to the gramicidin A ion channel surface, and the second row illustrates a cross section of the whole tetrahedral volume mesh. The parallel finite element Poisson–Nernst–Planck simulator by Bin Tu, Minxin Chen, Yan Xie, Linbo Zhang, Bob Eisenberg, and Benzhuo Lu on page 2065 delivers results in agreement with Brownian dynamics and experimental results.