National Creative Research Center for Active Plasmonics Application Systems, Inter-University Semiconductor Research Center, Seoul National University, Gwanak-Gu Gwanakro 1, Seoul 151-744, Korea.
Sensors (Basel). 2011;11(11):10907-29. doi: 10.3390/s111110907. Epub 2011 Nov 21.
The optical properties of various nanostructures have been widely adopted for biological detection, from DNA sequencing to nano-scale single molecule biological function measurements. In particular, by employing localized surface plasmon resonance (LSPR), we can expect distinguished sensing performance with high sensitivity and resolution. This indicates that nano-scale detections can be realized by using the shift of resonance wavelength of LSPR in response to the refractive index change. In this paper, we overview various plasmonic nanostructures as potential sensing components. The qualitative descriptions of plasmonic nanostructures are supported by the physical phenomena such as plasmonic hybridization and Fano resonance. We present guidelines for designing specific nanostructures with regard to wavelength range and target sensing materials.
各种纳米结构的光学特性已被广泛应用于生物检测，从 DNA 测序到纳米级单分子生物功能测量。特别是，通过采用局域表面等离子体共振（LSPR），我们可以预期具有高灵敏度和分辨率的出色传感性能。这表明可以通过使用 LSPR 的共振波长的位移来检测纳米级别的折射率变化。在本文中，我们综述了各种等离子体纳米结构作为潜在的传感元件。等离子体纳米结构的定性描述得到了等离子体杂化和 Fano 共振等物理现象的支持。我们提出了针对特定纳米结构的设计准则，包括波长范围和目标传感材料。
