Nanoparticle dimers composed of two adjacent metal nanoparticles can amplify electromagnetic fields on nanoscale and hold a promise for developing of ultrasensitive biosensors. The focus of the project is on the preparation of dimers consisting of silver nanoparticles. The dimers will be prepared using a combination of silver nanoclusters produced by magnetron spattering (MaSCA) and deposited on a polymer coated solid substrate and colloidal silver nanoparticles produced in solution. The obtained nanoparticles and dimers will be studied using Atomic Force Microscopy, Scanning Electron Microscopy and UV-VIS absorption spectroscopy.