WISTP-2008 Sevilla-mayo 13-16 Electronic olfactory nano-microsystems for recognition in biometrics GRIDSEN GROUP F.Javier Gutierrez , Mª.C Horrillo ,I.Sayago ,Mª.J.Fernandez ,M.Aleixandre .GRISDEN .IFA,CSIC,Serrano 144,28006 Madrid ,javiergutierrez@ifa.cetef.csic.es