Back in 2013,Dilitium Crystals Were Being Investigated

"Way back in 2013,over 4 hundred years ago, Lithium crystals were being investigated as a possible shield for primitive fusion reactors,and the correct combination of Lithium and trace elements had not been refined.

Little did they know that someday their descendents would be traveling amongst the stars due to the amazing abilities of DiLithium Crystals,combined with mercury and platinum and tungsten to insulate,reflect and concentrate the energy from our present matter-anti matter reactors.

Our modern Jeffry Tubes are lined with this material to channel energy to our engines.

So you see, my boy, that is why you have to study history, chemistry,physics, and metallurgy to become even an apprentice engineer on today's star ships.

Now finish your breakfast and come with me, I have much to show you."

http://www.laboratoryequipment.com/news/2013/11/lithium-vapors-shield-reactor-components?et_cid=3598648&et_rid=367738269&type=headline