title: Aluminum nanocrystals.
abstract: We 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.
authors: Michael J
authors: MJ
authors: McClain
authors: Andrea E
authors: AE
authors: Schlather
authors: Emilie
authors: E
authors: Ringe
authors: Nicholas S
authors: NS
authors: King
authors: Lifei
authors: L
authors: Liu
authors: Alejandro
authors: A
authors: Manjavacas
authors: Mark W
authors: MW
authors: Knight
authors: Ish
authors: I
authors: Kumar
authors: Kenton H
authors: KH
authors: Whitmire
authors: Henry O
authors: HO
authors: Everitt
authors: Peter
authors: P
authors: Nordlander
authors: Naomi J
authors: NJ
authors: Halas
mesh_terms: D000535:Aluminum / Q000737:chemistry*; D003460:Crystallization / Q000379:methods*; D008027:Light; D008422:Materials Testing; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D012542:Scattering, Radiation; D020349:Surface Plasmon Resonance / Q000379:methods*; D013499:Surface Properties
chemical_list: D000535:Aluminum
keywords: Plasmon; UV; aluminum; nanocrystal; synthesis