title: Tunable and highly reproducible surface-enhanced Raman scattering substrates made from large-scale nanoparticle arrays based on periodically poled LiNbO3templates.
abstract: This work describes novel surface-enhanced Raman scattering (SERS) substrates based on ferroelectric periodically poled LiNbO3templates. The templates comprise silver nanoparticles (AgNPs), the size and position of which are tailored by ferroelectric lithography. The substrate has uniform and large sampling areas that show SERS effective with excellent signal reproducibility, for which the fabrication protocol is advantageous in its simplicity. We demonstrate ferroelectric-based SERS substrates with particle sizes ranging from 30 to 70 nm and present tunable SERS effect from Raman active 4-mercaptopyridine molecules attached to AgNPs when excited by a laser source at 514 nm.
authors.affiliation: College of Metallurgy and Materials Engineering, Chongqing University of Science and Technology, Chongqing 401331, People's Republic of China; Department of Material Science and Engineering, University of Washington, Seattle, WA 98195, USA.
authors.forename: Xiaoyan
authors.initials: X
authors.lastname: Liu
authors.affiliation: Optical & Electronic Materials Unit, National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan.
authors.forename: Kenji
authors.initials: K
authors.lastname: Kitamura
authors.affiliation: Department of Chemical Engineering, University of Washington, Seattle, WA 98195, USA.
authors.forename: Qiuming
authors.initials: Q
authors.lastname: Yu
authors.affiliation: Department of Chemical Engineering, University of Washington, Seattle, WA 98195, USA.
authors.forename: Jiajie
authors.initials: J
authors.lastname: Xu
authors.affiliation: International Center for Materials Nanoarchitectonics, Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan.
authors.forename: Minoru
authors.initials: M
authors.lastname: Osada
authors.affiliation: International Center for Materials Nanoarchitectonics, Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan.
authors.forename: Nagata
authors.initials: N
authors.lastname: Takahiro
authors.affiliation: Department of Mechanical Engineering, University of Washington, Seattle, WA 98195, USA.
authors.forename: Jiangyu
authors.initials: J
authors.lastname: Li
authors.affiliation: College of Metallurgy and Materials Engineering, Chongqing University of Science and Technology, Chongqing 401331, People's Republic of China.
authors.forename: Guozhong
authors.initials: G
authors.lastname: Cao
keywords: LiNbO3; ferroelectric-based SERS substrate; reproducibility; surface-enhanced Raman scattering (SERS); tunability