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Cover Feature: Steady‐State and Time‐Resolved Optical Properties of Multilayer Film of Titanium Dioxide Sandwiched by Gold Nanoparticles and Gold Thin Film (ChemNanoMat 8/2019)
Author(s) -
Yanagiya Shinichiro,
Takahata Toshihiko,
Yoshitani Yuki,
Kawakami Retsuo,
Furube Akihiro
Publication year - 2019
Publication title -
chemnanomat
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.947
H-Index - 32
ISSN - 2199-692X
DOI - 10.1002/cnma.201900190
Subject(s) - materials science , thin film , colloidal gold , titanium dioxide , plasmon , nanoparticle , laser , nanostructure , titanium , optoelectronics , surface plasmon resonance , nanotechnology , optics , composite material , metallurgy , physics
Metal‐insulator‐metal (MIM) structures of titanium dioxide (TiO 2 ) sandwiched by gold nanoparticles (AuNPs) and gold sputtered thin film were fabricated to couple localized plasmon mode of AuNP with multi‐reflection mode and/or cavity resonator mode of Au‐film and/or TiO 2 . The thickness of TiO 2 , which heterogeneously grew from AuNP, affected the optical extinction and the transient absorption spectra (TAS). The long‐lived electron (∼1 ns) was observed in thick (800 nm) MIM film under the condition of 800 nm for excitation laser and 950 nm for probe laser. This indicates that the hot electron transferred from the gold nanostructure in the film. More information can be found in the Full Paper by Shin‐ichiro Yanagiya et al. on page 1015 in Issue 8, 2019 (DOI: 10.1002/cnma.201900042).