Plasmonic Nanostructures for Nano-Scale Bio-Sensing

Sensors

Taerin Chung¹  Seung-Yeol Lee¹  Eui Young Song¹  Honggu Chun² 

[1] National Creative Research Center for Active Plasmonics Application Systems, Inter-University Semiconductor Research Center and School of Electrical Engineering, Seoul National University, Gwanak-Gu Gwanakro 1, Seoul 151-744, Korea; E-Mails:;Department of Biomedical Engineering, Korea University, Seoul 136-701, Korea; E-Mail:

关键词: surface plasmon resonance;    optical sensors;    plasmonic sensors;    nanostructure;   

DOI  :  10.3390/s111110907

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2011 by the authors; licensee MDPI, Basel, Switzerland.