Chong Xinyuan, Abboud Jacques, Zhang Zhili
J Nanosci Nanotechnol. 2015 Mar;15(3):2234-40. doi: 10.1166/jnn.2015.9698.
Localized Surface Plasmonics Resonance (LSPR) enhanced active photothermal effects of both aluminum nanoparticles (Al NPs) and iron nanoparticles (Fe NPs) are experimentally observed. Photothermally activated motion and ignition by low-energy xenon flash are quantitatively measured. For nanoparticles of comparable sizes, photothermally activated motion height of Fe NPs is about 60% lower than that of Al NPs, while photothermal Minimum Ignition Energy (MIE) of Fe NPs is about 50% lower than that of Al NPs. Joule heating by LSPR enhanced photothermal effects among nanoparticles and subsequently triggered oxidation reactions are found responsible for the motion and ignition of the nanoparticles.
实验观察到，局域表面等离子体共振（LSPR）增强了铝纳米颗粒（Al NPs）和铁纳米颗粒（Fe NPs）的活性光热效应。通过低能量氙闪光灯对光热激活的运动和点火进行了定量测量。对于尺寸相当的纳米颗粒，Fe NPs的光热激活运动高度比Al NPs低约60%，而Fe NPs的光热最小点火能量（MIE）比Al NPs低约50%。发现LSPR增强的纳米颗粒间光热效应产生的焦耳热以及随后引发氧化反应是纳米颗粒运动和点火的原因。
