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. Author manuscript; available in PMC: 2013 Mar 13.
Published in final edited form as: Environ Sci Technol. 2009 Aug 1;43(15):5915–5920. doi: 10.1021/es9013097

Figure 4.

Figure 4

Nano-selenium formulations. A) nSe colloidal suspension (test-tube) and impregnated cloth fabricated by spontaneous capillary infiltration and drying. Nominal 5 mg nSe in 780 cm2 cloth. B) SEM image of impregnated cloth showing cellulose fibers decorated with ~20–200 nm selenium nanoclusters. C) nSe-impregnated cloth after placed over carpet containing a single small Hg droplet, showing the color change associated with the Hg/Se reaction demonstrating the indicator of self-sensing function.