The tachyonic particle shell is a block that surrounds the tachyonic particle core of certain tachyon atoms in the Quantum Realm.

They can be mined with a pickaxe, and are used to recharge Tachyon Devices/Prototypes.

In order to recharge them, simply place the worn down Device or Prototype and a certain amount of Tachyonic Particle Shells in a crafting table. Each shell will restore 100 durability points.