title: Mechanism studies on the superior optical limiting observed in graphene oxide covalently functionalized with upconversion NaYF₄ :Yb³⁺/Er³⁺ nanoparticles.
authors.affiliation: Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore.
authors.forename: Tingchao
authors.initials: T
authors.lastname: He
authors.forename: Wei
authors.initials: W
authors.lastname: Wei
authors.forename: Lin
authors.initials: L
authors.lastname: Ma
authors.forename: Rui
authors.initials: R
authors.lastname: Chen
authors.forename: Shixin
authors.initials: S
authors.lastname: Wu
authors.forename: Hua
authors.initials: H
authors.lastname: Zhang
authors.forename: Yanhui
authors.initials: Y
authors.lastname: Yang
authors.forename: Jan
authors.initials: J
authors.lastname: Ma
authors.forename: Ling
authors.initials: L
authors.lastname: Huang
authors.forename: Gagik G
authors.initials: GG
authors.lastname: Gurzadyan
authors.forename: Handong
authors.initials: H
authors.lastname: Sun