基于局域表面等离子体共振的压敏薄膜信号增强

Signal Enhancement of Pressure-Sensitive Film Based on Localized Surface Plasmon Resonance.

作者信息

Zhou Bei, Gu Feng, Liu Yingzheng, Peng Di

机构信息

Key Lab of Education Ministry for Power Machinery and Engineering, School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China.

Gas Turbine Research Institute, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China.

出版信息

Sensors (Basel). 2021 Nov 17;21(22):7627. doi: 10.3390/s21227627.

DOI:10.3390/s21227627

PMID:34833703

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8622889/

Abstract

Pressure-sensitive films have been used for measurement in micro flow, but thin films have very limited intensity, resulting in poor signal-noise ratio (SNR). This paper presents a pressure-sensitive film whose emission signal is enhanced by silver nanoparticles (AgNPs) based on localized surface plasmon resonance (LSPR). Electronic beam evaporator and annealing furnace are used to fabricate silver nanotexture surface. PtTFPP and polystyrene are dissolved in toluene and then spin-coated on the silver nanotexture surface to prepare the pressure-sensitive films. Signal enhancement of film with AgNPs due to LSPR is analyzed and enhancement effect of samples with different particle sizes and spacer thickness are compared. Pressure and temperature calibrations are performed to assess the sensing performance of pressure-sensitive films. Pressure-sensitive films with AgNPs demonstrate signal enhancement due to LSPR and show promise for measurement in micro flow.

摘要

压敏薄膜已被用于微流测量，但薄膜强度非常有限，导致信噪比（SNR）较差。本文提出了一种基于局域表面等离子体共振（LSPR）的、发射信号通过银纳米颗粒（AgNP）增强的压敏薄膜。采用电子束蒸发器和退火炉制备银纳米纹理表面。将PtTFPP和聚苯乙烯溶解在甲苯中，然后旋涂在银纳米纹理表面以制备压敏薄膜。分析了由于LSPR导致的含AgNP薄膜的信号增强，并比较了不同粒径和间隔层厚度样品的增强效果。进行压力和温度校准以评估压敏薄膜的传感性能。含AgNP的压敏薄膜由于LSPR显示出信号增强，在微流测量中展现出应用前景。