Design, Fabrication and Characterization of Pressure-Responsive Films Based on The Orientation Dependence of Plasmonic Properties of Ag@Au Nanoplates

作者：Fu, Li-Shun; Wang, Wen-Shou^*; Xu, Cheng-Yan; Li, Yao; Zhen, Liang^*

来源：Scientific Reports, 2017, 7(1): 1676.

DOI：10.1038/s41598-017-01928-5

• GOLD NANORODS
• DIPOLE APPROXIMATION
• NANOPARTICLES
• GROWTH
• SENSOR
• PERFORMANCE
• STABILITY
• ENERGY

A novel pressure-responsive polymer composite film was developed based on Ag@Au composite nanoplates (NPLs) and polyvinylpyrrolidone (PVP) by using Au nanoparticles as concentration reference. The orientation change of Ag@Au NPLs is impelled by the deformation of polymer matrix under pressure, resulting in its localized surface plasmon resonance (LSPR) intensity change of in-plane dipolar peak. The intensity ratio between plasmon peak of Au nanoparticles and in-plane dipolar peak of Ag@Au NPLs relies on the intensity and duration of pressure. By adjusting the viscosity of the polymer, the orientation change of LSPR may respond to a wide range of stresses. This pressure sensitive film can be utilized to record the magnitude and distribution of pressure between two contacting surfaces via optical information.

• 出版日期2017-5-10
• 单位深圳光启高等理工研究院; 哈尔滨工业大学; 山东大学