Analytical Sciences


Abstract − Analytical Sciences, 32(3), 275 (2016).

Thermal and Chemical Stabilization of Silver Nanoplates for Plasmonic Sensor Application
Yukina TAKAHASHI,*,** Koichi SUGA,*** Takuya ISHIDA,*** and Sunao YAMADA*,**
*Department of Applied Chemistry, Faculty of Engineering, Kyushu University, 744 Moto-oka, Nishi, Fukuoka 819-0395, Japan
**Center for Future Chemistry, Kyushu University, 744 Moto-oka, Nishi, Fukuoka 819-0395, Japan
***Department of Materials Physics and Chemistry, Graduate School of Engineering, Kyushu University, 744 Moto-oka, Nishi, Fukuoka 819-0395, Japan
Thermal and chemical stabilities of silver nanoplates (AgPLs), which are triangle plate-shaped silver nanoparticles, were improved by coating with titanium oxide. The titanium oxide layer prepared by a dip-coating method was certainly advantageous for the improvement of thermal stability. Furthermore, the overlayering of titanium oxide by a spray pyrolysis method was quite useful for improving the chemical stability against I exposure. Such a coating exhibited satisfactory refractive index sensitivities.