Formation of silver nanoclusters in transparent polyimides by Ag-K ion-exchange process S. Carturan, A. Quaranta, M. Bonafini, A. Vomiero, G. Maggioni, G. Mattei, C. de Julián Fernández, M. Bersani, P. Mazzoldi and G. Della Mea Eur. Phys. J. D, 42 2 (2007) 243-251 Published online: 31 January 2007 DOI: 10.1140/epjd/e2007-00017-9