In some cases, special atomic arrangements enable them to convert mechanical energy into electrical energy. (sciencedaily.com)
The new atomic arrangement stays put, even when the voltage is turned off. (seeker.com)
But the mutual annihilation between those particles and their ubiquitous matter counterparts makes it challenging to hang on to antimatter for very long, and even more challenging to produce and confine bound atomic arrangements of multiple antiparticles. (scientificamerican.com)