FDTD Modelling of Silver Nanoparticles Embedded in Phase Separation Interface of H‐PDLC

Abstract

We report localized surface plasmon resonance (LSPR) of silver nanoparticles (NPs) embedded in interface of phase separation of holographic polymer‐dispersed liquid crystal (H‐PDLC) gratings using Finite‐Difference Time Domain method. We show that silver NPs exhibit double resonance peak at the interface, and these peaks are influenced by the angle of incident light. We observe a blue shift of the wavelength of resonance peak as the incident angle increases. However, the location of silver NPs at the interface has nearly no effect on the wavelength of resonance peak. Also we show near‐field and far‐field properties surrounding silver NPs and find that field distribution can be controlled through rotation of incident angle. Therefore, LSPR properties of silver NPs within H‐PDLC gratings can be excited by appropriate wavelength and angle of the incident light.