Abstract
Shear horizontal surface acoustic waves (SH-SAW) are the surface wave generated by the piezoelectric material such as 36XY-LiTaO <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</inf> after feed using electric signal via interdigital transducer (IDTs). SH-SAW was applied for many applications such as biosensors, physical and chemical sensors. Another interesting phenomenon is localized surface plasmon resonance (LSPR). LSPR effect refers to the collective oscillation of conduction electrons band at the metallic NPs structure while interacting with a specific wavelength of incident light. However, the interaction between SH-SAW vibration with LSPR is still rarely studied. Here, we propose investigating the interaction between SH-SA and LSPR by fabricating gold nanoparticles (AuNPs) at the middle part of the SH-SAW device. As a result, SH-SAW was assisted AuNPs vibration and produced a blue-shift effect with high capability tunable the LSPR spectrum. Finally, this research can make a bridge between SH-SAW and LSPR technology to create tunable LSPR spectrum and multifunctional sensors.
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