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 I think is important to note since we benefited immensely from tackling this problem as a collaborative Center rather than just one group alone.”