Аннотация:A new growth method of morphologically different 0.1-10 mm-50 nm - 50 mkm whiskers of SnObased on thermal decomposition of a SnO precursor in nitrogen in the presence of metallic Sn or Pt is suggested. The dependence of resulting whisker morphology on the type of substrate material is discussed using, in particular, preliminary data of 2 observation of growth process features. It was found that the whiskers obtained reveal promising sensor properties with respect to toxic gases such as NOin situ .2