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Reactive dissolution and its effects on electrical conduction, morphological change and chemical transformation in thin films of Mg, AZ31B Mg alloy, Zn, Fe, W, and Mo in de-ionized (DI) water and simulated body fluids (Hanks' solution pH 5-8) are systematically studied, to assess the potential for use of these metals in water-soluble, that is, physically "transient", electronics. The results indicate that the electrical dissolution rates in thin films can be much different that traditionally reported corrosion rates in corresponding bulk materials. Silicon metal oxide field effect transistors (MOSFETs) built with these metals demonstrate feasibility for use in transient electronics. [ABSTRACT FROM AUTHOR]

Electronics technologies that can physically disappear by dissolution in water or biofluids have broad applications in implantable, environmentally friendly, and hardware‐secure devices. On page 645, J. A. Rogers and co‐workers study the materials science of various metal thin films that can serve as dissolvable conductors in transient electronics. This image shows dissolving thin films of zinc as contacts for silicon transistors along with measurements of changes in electronic performance during this time. [ABSTRACT FROM AUTHOR]