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vµ¶àÂöYØèÙHö¸LNot sure what mechanism you're asking for. The point is to add up vibrational energy to something with external force using the same frenquency.
https://whatsonchain.com/tx/d02e41bb7477d1d80d6c267eb1f2e7069794d292b745310fe4ed1ae297c51d4f