New micromegas detectors for rare event Searches: axions and ßß decay.

Recently, micropattern detectors and in particular micromegas are receiving much attention from the community of rare event searches. The main features that make these detectors rather promising for this field of research and which distinguish them from other gaseous structures are their very stable operation, their homogeneity and granularity which result in very good energy and spatial resolution. In this paper we summarize the latest results on the development of new generation micromegas detectors focusing on rare event searches; more specifically their performance in the search of axions and their possible application to double beta decay experiments.