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How can you calculate how many atoms are in a nanoparticle?

Two years ago, I wrote a blog post called Two Ways to Make Nanoparticles, describing the difference between top-down and bottom-up methods for making nanoparticles. In the post I commented, “we can estimate, knowing how gold atoms pack into crystals, that there are about 2000 gold atoms in one 4 nm diameter gold nanoparticle.” Recently, a Sustainable Nano reader wrote in to ask about … Continue reading

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Publication Summary: How do different kinds of bacteria interact with different kinds of nanoparticles?

This post is part of our ongoing series of public-friendly summaries describing research articles that have been published by members of the Center for Sustainable Nanotechnology. Vivian Feng, a chemistry professor at Augsburg College, is the first author of this paper, which was a collaboration with undergraduate and graduate students as well as other CSN … Continue reading

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Publication Summary: Designing a Simple, Easy-to-Build Reactor for Making Nanoparticles

This post is part of our ongoing series of public-friendly summaries describing research articles that have been published by members of the Center for Sustainable Nanotechnology. Sam Lohse, the first author on this paper, was a post-doctoral student at the University of Illinois and is now an assistant professor at Colorado Mesa University in Grand Junction, CO. He … Continue reading

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Publication Summary: Negatively-Charged Nanoparticles Stick to a Negatively-Charged Surface

This post is part of our ongoing series of public-friendly summaries describing research articles that have been published by members of the Center for Sustainable Nanotechnology. Julianne Troiano, a doctoral student at Northwestern University, was the first author on this paper. She says, “In this post I discuss one experimental hurdle we had to overcome that … Continue reading