Could dark energy be used as an antigravity device?

iced199

If you were to concentrate enough of it in one place, could it generate an antigravity field, similar to the hypothetical 'negative matter'? Only it is proven to exist. I am wondering this because it obviously seems to have some kind of repulsive effect that is exactly the opposite of gravity. Though it may not be feasible, could it work?

Pengwuino

We don't even know what dark energy is definitively so whether or not you can do something with it is a moot point. Our best understanding of dark energy is that it is a property of space (space-time) itself, so to say that you can get some dark energy and "put it" some place doesn't make much sense.