An inhomogeneity into a conductive matrix deforms the flow pattern of an applied electric current. A usual current cloak can be defined as a permanent modification of the matrix properties around the inhomogeneity guaranteeing that the current flow pattern is similar before and after passing by the modified zone, so it implies the ‘electrical invisibility’ of the inhomogeneous region. Here we introduce the concept of a current cloak that can be tuned by means on an external field. We demonstrate analytically and using finite elements simulations that a current cloak can be constructed and manipulated by an external magnetic field for a concrete system consisting in a magneto-resistive matrix with an inclusion of larger conductivity.

导电基体的不均匀性使施加的电流的流动模式变形。通常的电流斗篷可以定义为对不均匀性周围的矩阵属性进行永久修改，确保电流通过修改区之前和之后的流动模式相似，因此它意味着不均匀区域的“电不可见性”。在这里，我们介绍了可以通过外部场进行调整的电流斗篷的概念。我们通过分析和使用有限元模拟证明，电流斗篷可以通过外部磁场构造和操纵，用于由磁阻矩阵组成的混凝土系统，其中包含更大的电导率。