Various TEM images of freeze-fractured replica of the wastewater containing MNBs. Each scale bar indicates 500 nm. An ice crystallite with a faceted smooth surface was located in the center of each picture (a, b), and surrounded by a rough surface composed of fine particles (impurities). The remaining area around the particles is the glass state of the solution.
Uchida et al. Nanoscale Research Letters 2011 6:295 doi:10.1186/1556-276X-6-295