Is it possible, with all discussed rules of Unarmed Strike/Martial Arts for it to be used with UA Mystic 3's Potent Psionics?

Potent Psionics At 8th level, you gain the ability to infuse your weapon attacks with psychic energy. Once on each of your turns when you hit a creature with a weapon, you can deal an extra 1d8 psychic damage to that target. When you reach 14th level, this extra damage increases to 2d8.