 For this reason they can be used not only for ionizing particles and photons, but also for non-ionizing particles, any sort of radiation, and even to search for unknown forms of mass or energy (like dark matter); this lack of discrimination can also be a shortcoming.The most sensitive bolometers are very slow to reset (i.e., return to thermal equilibrium with the environment).On the other hand, compared to more conventional particle detectors, they are extremely efficient in energy resolution and in sensitivity.