Nanofiltration and nanostructured membranes-should they be considered nanotechnology or not?

Mueller NC, van der Bruggen B, Keuter V, Luis P, Melin T, Pronk W, Reisewitz R, Rickerby D, Rios GM, Wennekes W & Nowack B
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Mueller, N. C., van der Bruggen, B., Keuter, V., Luis, P., Melin, T., Pronk, W., … Nowack, B. (2012). Nanofiltration and nanostructured membranes-should they be considered nanotechnology or not? Journal of Hazardous Materials, 211-212, 275-280. https://doi.org/10.1016/j.jhazmat.2011.10.096