Figure 5.

Inherently aligned liquid metal electrodes in microchannels. (a) Cut-away depiction of the process used to fabricate liquid metal microelectrodes in contact with a central fluidic channel. Two parallel rows of posts separate the liquid metal electrodes from the fluidic channel. (Not shown: The channels are sealed on top by a flat slab of PDMS.) (b) Top-down, backlit optical micrograph of the fluidic channel flanked by two liquid metal electrodes. The posts prevent the metal from entering the fluidic channel. Adapted with permission from ref (46). Copyright 2011 The Royal Society of Chemistry.