[en] A new generation of detectors for non-accelerator particle physics has been under development in the last years and has recently started to be used in experimental searches. The results have already demonstrated that low temperature detectors can be competitive with conventional ones in several fields of non-accelerator particle physics. The near future upgrading of this technique will be the extension from one single crystal device to arrays of several single crystals. This new detector set-up poses stimulating and original technical problems, both on detector structure and signal analysis: our progresses in this field are reported. (orig.)