About the cover

May 2011 Volume 3 No 5

The cover image shows a surface-confined switch based on an electroactive organic radical (red) that is transformed to the corresponding anion (purple). This bistable system, developed by Jaume Veciana, Concepció Rovira and co-workers, behaves as an extremely robust redox switch in which an electrical input is transduced into an optical and magnetic output. This switch operates at very low voltages, can be patterned and locally addressed, and exhibits an exceptionally high long-term stability and excellent reversibility.

Image by Mateu Marcet/Cover design by Alex Wing, Nature Chemistry

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