Nanomaterials describe, in principle, materials of which a single unit is sized (in at least one dimension) between 1 to 1000 nanometres (10−9 meter) but usually is 1 to 100 nm (the usual definition of nanoscale).
The development of clean energy technologies for cars should go hand in hand with investments in infrastructure. EU-funded scientists showed how to halve the energy required for liquefying hydrogen and how to scale up hydrogen liquefaction in Europe, enabling a low-carbon energy supply chain.