Title :
SPR biosensor using gold nanoantenna arrays in Kretchmann configuration
Author :
Yi-Hsun Chen ; Min-Hsiung Shih ; Kuo-Ping Chen
Author_Institution :
Inst. of Lighting & Energy Photonic, Nat. Chiao-Tung Univ., Hsinchu, Taiwan
Abstract :
Gold nanoantenna arrays with Kretchmann prism coupling configuration are designed as high sensitivity bio-sensor. In order to achieve higher near-field enhancement, total internal reflection (TIR) is used to transfer the input energy into localized surface plasmon resonance (LSPR). Base on this geometry, multiple coupling modes are observed and the magnitude of electric field shows 6.9 time higher than the traditional gold film sensor.
Keywords :
antenna arrays; biological techniques; biosensors; electric fields; light reflection; nanostructured materials; optical prisms; surface plasmon resonance; Au; Kretchmann prism coupling configuration; SPR biosensor; electric field magnitude; geometry; gold nanoantenna arrays design; high biosensor sensitivity; high near-field enhancement; input energy transfer; multiple coupling mode; surface plasmon resonance localization; total internal reflection; traditional gold film sensor; Gold; Sensitivity; Wavelength measurement;
Conference_Titel :
Nanotechnology Materials and Devices Conference (NMDC), 2013 IEEE 8th
Conference_Location :
Tainan
Print_ISBN :
978-1-4799-3386-0
DOI :
10.1109/NMDC.2013.6707463
