当前位置: X-MOL 学术Appl. Surf. Sci. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Reconfigurable localized surface plasmon resonance spectrum based on acousto-dynamic coupling in arrays gold nanoparticles induced by shear horizontal vibration
Applied Surface Science ( IF 6.7 ) Pub Date : 2021-09-20 , DOI: 10.1016/j.apsusc.2021.151331
Teguh Firmansyah 1, 2 , Gunawan Wibisono 2 , Eko Tjipto Rahardjo 2 , Jun Kondoh 1, 3
Affiliation  

Reconfigurable localized surface plasmon resonance (LSPR) is an essential characteristic for various applications to support Society 5.0. However, many LSPR spectrum have poor reconfigurability. As a novelty, we proposed a reconfigurable LSPR spectrum by acousto-dynamic coupling in arrays of gold nanoparticles (AuNPs) induced by shear-horizontal vibrations. The vibrations were produced by piezoelectric phenomena especially shear horizontal surface acoustic waves (SH-SAWs) on a 36XY-LiTaO3 substrate after applying an electric signal, the ON-condition. The experimental results demonstrated that the ON-condition produced a blueshift effect on the peak position (λP) with an adjustment quality factor compared to the OFF-condition. Moreover, in order to perform the finite-difference time-domain (FDTD) analysis, we reproduced the morphological structure of AuNPs base on scanning electron microscope (SEM) images. The different coupling distances and different arrays structures were utilized as ON-condition approaches for dimer AuNPs and arrays AuNPs, respectively. The FDTD simulation obtained a blueshift effect compared to the initial structure. Finally, the proposed structure successfully combines piezoelectric phenomena with plasmonic phenomena to produce reconfigurable LSPR. The LSPR spectrum can be switched comfortably and reverses easily. The proposed method can be applied for multifunctional sensors with the high possibility of integration into a wireless network.



中文翻译:

基于水平剪切振动诱导的金纳米粒子阵列声动力耦合的可重构局域表面等离子体共振谱

可重构局部表面等离子体共振 (LSPR) 是支持社会 5.0 的各种应用的基本特征。然而,许多 LSPR 谱具有较差的可重构性。作为一个新颖之处,我们通过剪切水平振动诱导的金纳米颗粒 (AuNPs) 阵列中的声动力耦合提出了一种可重构的 LSPR 光谱。振动是由压电现象产生的,特别是在施加电信号后,在 36XY-LiTaO 3基板上的剪切水平表面声波 (SH-SAW) ,即 ON 条件。实验结果表明,ON 条件对峰值位置 (λ P) 与 OFF 条件相比具有调整品质因数。此外,为了进行有限差分时域 (FDTD) 分析,我们基于扫描电子显微镜 (SEM) 图像再现了 AuNPs 的形态结构。不同的耦合距离和不同的阵列结构分别用作二聚体 AuNP 和阵列 AuNP 的 ON 条件方法。与初始结构相比,FDTD 模拟获得了蓝移效应。最后,所提出的结构成功地将压电现象与等离子体现象相结合,以产生可重构的 LSPR。LSPR 光谱可以轻松切换并轻松反转。所提出的方法可以应用于集成到无线网络中的可能性很高的多功能传感器。

更新日期:2021-09-24
down
wechat
bug