纳米-
材料科学
纳米银
共振(粒子物理)
纳米颗粒
纳米技术
分析化学(期刊)
化学
物理
复合材料
原子物理学
有机化学
作者
Daryoush Mortazavi,Abbas Z. Kouzani,Kristy C. Vernon
出处
期刊:Electromagnetic waves
日期:2012-01-01
卷期号:130: 429-446
被引量:17
摘要
Localized surface plasmon resonance (LSPR) biosensors are employed to detect target biomolecules which have particular resonance wavelengths. Accordingly, tunability of the LSPR wavelength is essential in designing LSPR devices. LSPR devices employing silver nano-particles present better efficiencies than those using other noble metals such as gold; however, silver nano-particles are easily oxidized when they come in contact with liquids, which is inevitable in biosensing applications. To attain both durability and tunabilty in a LSPR biosensor, this paper proposes alumina (AL2O3) capped silver nano-disks. It is shown that through controlling the thickness of the cap, the LSPR resonance frequency can be finely tuned over a wide range; and moreover, the cap protects silver nano-particles from oxidation and high temperature.
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