Adhesive and electrical grid: what they have in common

1. Step 1. Adhesive — is part of — Adhesive tape. The sticky layer.
2. Step 2. Adhesive tape — is used in — Graphene. Geim and Novoselov peeled off graphene with sticky tape.
3. Step 3. Graphene — is made of — Carbon. Graphene is a layer of carbon one atom thick.
4. Step 4. Carbon — is used in — Hall–Héroult process. The electrodes for smelting aluminium are carbon — they slowly burn away.
5. Step 5. Hall–Héroult process — uses — Electrical grid. It needs enormous amounts of electricity.

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