title: High-resolution EM of colloidal nanocrystal growth using graphene liquid cells.
abstract: We introduce a new type of liquid cell for in situ transmission electron microscopy (TEM) based on entrapment of a liquid film between layers of graphene. The graphene liquid cell facilitates atomic-level resolution imaging while sustaining the most realistic liquid conditions achievable under electron-beam radiation. We employ this cell to explore the mechanism of colloidal platinum nanocrystal growth. Direct atomic-resolution imaging allows us to visualize critical steps in the process, including site-selective coalescence, structural reshaping after coalescence, and surface faceting.
authors.affiliation: Department of Physics, University of California at Berkeley, Berkeley, CA 94720, USA.
authors.forename: Jong Min
authors.initials: JM
authors.lastname: Yuk
authors.forename: Jungwon
authors.initials: J
authors.lastname: Park
authors.forename: Peter
authors.initials: P
authors.lastname: Ercius
authors.forename: Kwanpyo
authors.initials: K
authors.lastname: Kim
authors.forename: Daniel J
authors.initials: DJ
authors.lastname: Hellebusch
authors.forename: Michael F
authors.initials: MF
authors.lastname: Crommie
authors.forename: Jeong Yong
authors.initials: JY
authors.lastname: Lee
authors.forename: A
authors.initials: A
authors.lastname: Zettl
authors.forename: A Paul
authors.initials: AP
authors.lastname: Alivisatos