title: Seeing two-dimensional sheets on arbitrary substrates by fluorescence quenching microscopy.
abstract: Fluorescence quenching microscopy (FQM) is demonstrated as a low-cost and high-throughput technique for seeing graphene-like 2D sheets such as MoS2 . FQM provides high contrast and layer resolution comparable to those of scanning electron microscopy, but allows the imaging of samples deposited on arbitrary substrates, including non-conductive substrates such as quartz. Solution fluorescence quenching studies suggest that FQM should be feasible for many other 2D materials such as WS2 , Bi2 Te3 , MoSe2 , NbSe2 , and TaS2 .
authors.affiliation: Department of Materials Science and Engineering, Northwestern University, 2220 Campus Drive, Evanston, IL 60208, USA.
authors.forename: Alvin T L
authors.initials: AT
authors.lastname: Tan
authors.forename: Jaemyung
authors.initials: J
authors.lastname: Kim
authors.forename: Jing-Kai
authors.initials: JK
authors.lastname: Huang
authors.forename: Lain-Jong
authors.initials: LJ
authors.lastname: Li
authors.forename: Jiaxing
authors.initials: J
authors.lastname: Huang
mesh_terms: D008856:Microscopy, Fluorescence / Q000379:methods*
keywords: 2D materials; Förster resonance energy transfer; fluorescence quenching microscopy; graphene; molybdenum disulfide