| http://www.w3.org/ns/prov#value | - Materials, such as cobalt, are expensive and a limited resource, therefore, low cost solutions are sought preferably with renewable materials.Nature solved the problem long ago, says Olle Ingan??s, professor of biomolecular and organic electronics at Link??ping University (LiU) and lead author of the article in a recent edition of Science.He drew inspiration from the process of photosynthesis, w
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