China’s rare earth curbs a ‘wake-up call’ as India builds alternative supply chains: Piyush Goyal
#054 2025

China’s rare earth curbs a ‘wake-up call’ as India builds alternative supply chains: Piyush Goyal

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This is not an area for a chartered accountant, however well meaning and whatsoever competent. We are now in techie territory.

Physicists are still probing novel materials that emerge using ai. Some of them appear to defy the known laws of nature. From “weird metals”, where electrons seem to split their charge and spin, to twisted bilayer graphene that turns superconductive when rotated just 1.1°, these discoveries are upending long-standing principles of solid-state physics.

As an example, the chasm between capacitors and batteries is one that has never been crossed. Hybrid systems don’t have crossover. Capacitors can be charged in almost zero time because the storage of charge does not require a chemical reaction. To that extent it is passive as there is no generation of electrons. A battery on the other hand is limited by the speed of reaction which in turn is affected by several parameters including surface area, temperature and concentration. Capacitors too depend on surface area. So the primary ask from the ai is a material with extremely high surface area. Area of the quantum of one acre per gram of material are within sanity range now even though it is really incomprehensible that just one gram of material can yield a surface large enough to cover one acre.