铝纳米颗粒表面等离子体共振峰可控性研究

Controllability Study of Surface Plasmon Resonance Spectra of Aluminium Nanoparticles

在石英基底上制备了铝(Al)薄膜,同时加热烘烤制备了Al纳米颗粒,研究了不同厚度的Al纳米颗粒的吸收特性。结果表明,随着烘烤温度的上升,Al薄膜的粗糙度越来越大;当温度达到300℃时,Al薄膜完全转化成Al纳米颗粒。在300℃的烘烤温度下,当膜厚从5nm增加到25nm时,薄膜的共振吸收峰红移40nm。这种制备Al纳米颗粒的工艺简单、省时、成本低、效率高。

Aluminium （A1） thin films are prepared on the quartz substrate, and meanwhile A1 nanoparticles are obtained by baking the A1 thin films. The absorption property of A1 nanoparticles with different thicknesses are studied. The results show that the roughness of A1 thin films increases with the increase of baking temperature. When the baking temperature reaches 300 ℃, the A1 thin films are completely transformed into AI nanoparticles. When the film thickness varies from 5 nm to 25 nm, the redshift of the thin film resonance absorption peak is 40 nm at the baking temperature of 300 ℃. This fabrication process of Al nanoparticles is simple, time-saving, low-cost, and high-efficiency.