Saturday, November 3, 2018
Benign By Design
Nanomaterials tend to have magical properties. The most famous nanomaterial yet is graphene, which is a sheet of carbon molecules, holding on to each other in a way neither nature nor man has ever seen. Not only does this nanomaterial form itself in a way that is new, but it has properties that are just as novel. (See this jacket that was covered in graphene and sold to the public just for the chance that regular people may discover something that scientists haven't yet.)
Being that graphene, and most nanomaterials, are such a surprise, and that because of their magical properties they are becoming ubiquitous in our environment, it might be a good idea to figure out what these things do once we unleash them into the biosphere.
Just in time, here come some ideas about what this stuff does as it persists in our environment. The Center for Sustainable Nanotech shows us that the way nanoparticles are coated makes the difference in how they behave in biological systems.
Certain particle-coatings were found to form fatty sheaths that make the particles stick to each other. These little fat bubbles are really called fragmented lipid coronas, and like most things nano, they have never been seen before.
Some coatings make the fat-corona and some don't, and now that we are beginning to understand, the scientists want us to consider this in future applications of the wonder material.
Professor of chemistry in Northwestern's Weinberg College of Arts and Sciences Franz M. Geiger gets all the credit for the lingo by the way, "Benign by Design."
Notes:
Study provides insight into how nanoparticles interact with biological systems
Oct 2018, phys.org
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