An alternative to coating for some biological samples is to increase the bulk conductivity of the material by impregnation with osmium using variants of the OTO staining method (O-osmium tetroxide, T-thiocarbohydrazide, O-osmium).
An alternative to coating for some biological samp,les ,is to inc,rease the bulk conductivity of the material by impregnation with osmium us?ing variants of the OTO staining metho,d (O-osmium tetroxide, T-thiocarbohydrazide, O-osmium).