Antimatter would only temporarily kill Voldemort, but would perminantly kill both Harry and possibly Hermione.
The resonance cascade in Akaziban did not kill Quirrel, it only forced him to throw his want aside and turn into a snake. But still, it might be possible to use that as a distraction, while Harry does something else.
Quantities and locations matter. Atomic-diameter filaments linking nanogram-level concentrations in the brains of Voldemort and the Death Eaters could discorporate them without killing Harry (at least, not killing him before he could reach the Stone of Transfiguration).
Antimatter would only temporarily kill Voldemort, but would perminantly kill both Harry and possibly Hermione.
The resonance cascade in Akaziban did not kill Quirrel, it only forced him to throw his want aside and turn into a snake. But still, it might be possible to use that as a distraction, while Harry does something else.
Quantities and locations matter. Atomic-diameter filaments linking nanogram-level concentrations in the brains of Voldemort and the Death Eaters could discorporate them without killing Harry (at least, not killing him before he could reach the Stone of Transfiguration).