Named for the mythical god with two faces, Janus membranes -- double-sided membranes that serve as gatekeepers between two substances -- have emerged as a material with potential industrial uses. Creating two distinct "faces" on these delicate surfaces, however, is a process fraught with challenges.
By applying a common high-tech manufacturing technique in an uncommon way, researchers at the U.S. Department of Energy's (DOE) Argonne National Laboratory have discovered a new way to chemically deposit a second face, resulting in Janus membranes that are more robust and precisely structured than previous incarnations. Recently described in an article in Advanced Materials Interfaces, the patent pending technology could help optimize or enable a wide range of industrial processes, from treating wastewater to making biofuels.
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