Abstract

AbstractMaterials will always determine the performance of any engineering product and the most successful technologies are those for which the right materials have evolved as the technology matures. For example, early aircraft were made from cloth, wood and bicycle parts but then pushed the development of aluminium alloys and later carbon fibre composites. Jet engines were made possible only by the development of the high temperature nimonic alloys. The semiconductor industry needs incredibly pure silicon with carefully calculated additives. Such advances in materials can improve the cost-effectiveness of the original idea by many orders of magnitude. Sadly there has not so far been enough time for such dreams to come true for wave and tidal stream energy, which still need costs down by a factor of two or three. This note lists a number of dreams.

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