At millimeter dimensions or less, the conventional bonding technology tends to suffer from severe performance and reliability degradation. Moreover, the high heating temperature is usually needed. Here, we report a room-temperature electrical surface fastener based on copper/polystyrene core/shell nanowire (NW) arrays. Uniquely, this electrical surface fastener exhibits high macroscopic adhesion strength (similar to 44.42 N/cm(2)) and low electrical resistance (similar to 0.75 x 10(-2) Omega cm(2)). Furthermore, it was found that the adhesion strength of this surface fastener can be mediated by the shell thickness and the molecular weight of polystyrene. Finally, the contact mechanics theory was used to explain the adhesion mechanism. (C) 2015 Elsevier B.V. All rights reserved.