Atomic Trampolines
Rawlings Liquidmetal Plasma Fusion Baseball Bat
An high-strength and thin alloy shell with a liquid atomic structure offering better performance and durability and that drastically reduces energy loss.
http://www.dickssportinggoods.com/

Twice as strong as titanium, Liquidmetal is renowned for the pure flow of energy. Its amorphous atomic structure returns 29% more energy upon ball impact. The result is 20% more trampoline and a 30% larger sweet spot.
http://www.rawlings.com/fusion/fusion.html