McClain, Michael J.Schlather, Andrea E.Ringe, EmilieKing, Nicholas S.Liu, LifeiManjavacas, AlejandroKnight, Mark W.Kumar, IshWhitmire, KentonEveritt, Henry O.Nordlander, PeterHalas, Naomi J.2015-06-152015-06-152015McClain, Michael J., Schlather, Andrea E., Ringe, Emilie, et al.. "Aluminum Nanocrystals." <i>Nano Letters,</i> 15, no. 4 (2015) American Chemical Society: 2751-2755. http://dx.doi.org/10.1021/acs.nanolett.5b00614.https://hdl.handle.net/1911/80754We demonstrate the facile synthesis of high purity aluminum nanocrystals over a range of controlled sizes from 70 to 220 nm diameter with size control achieved through a simple modification of solvent ratios in the reaction solution. The monodisperse, icosahedral, and trigonal bipyramidal nanocrystals are air-stable for weeks, due to the formation of a 2-4 nm thick passivating oxide layer on their surfaces. We show that the nanocrystals support size-dependent ultraviolet and visible plasmon modes, providing a far more sustainable alternative to gold and silver nanoparticles currently in widespread use.engThis is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by the American Chemical SocietyJournal articleplasmonUValuminumnanocrystalsynthesishttp://dx.doi.org/10.1021/acs.nanolett.5b00614