“…This disadvantage was overcome recently when ESEM microscopes were equipped with special detectors for transmitted electrons (TE), which made it possible to carry out scanning transmission electron microscopy (STEM) in environmental conditions (STEM-in-ESEM, WetSTEM TM ) (Bogner et al, 2005; Stokes, 2008, 6). The first publication employing WetSTEM appeared in 2005 (Bogner et al, 2005) and this method has been applied successfully in studies of bacteria in water (Bogner et al, 2005, 2007), wetting and water condensation at the nanoscale (Barkay, 2010), synthetic polymer droplets (Do Amaral et al, 2005), nanospheres (Maraloiu et al, 2010), block copolymer micelles (Šlouf et al, 2011), and colloidal solution of isometric silver nanoparticles (Moh et al, 2010) in aqueous solutions.…”