Lee, Kyeong-Seok Son, Ju Myeong Jeong, Dae-Yong Lee, Taek Sung Kim, Won Mok 2024-01-20T18:03:22Z 2024-01-20T18:03:22Z 2021-09-05 2010-12 1424-8220 https://pubs.kist.re.kr/handle/201004/130868 In this study, we present and demonstrate a new route to a great enhancement in resolution of surface plasmon resonance sensors. Basically, our approach combines a waveguide coupled plasmonic mode and a kind of Au/Ag bimetallic enhancement concept. Theoretical modeling was carried out by solving Fresnel equations for the multilayer stack of prism/Ag inner-metal layer/dielectric waveguide/Au outer-metal layer. The inner Ag layer couples incident light to a guided wave and makes more fields effectively concentrated on the outer Au surface. A substantial enhancement in resolution was experimentally verified for the model stack using a ZnS-SiO2 waveguide layer. English MDPI SENSITIVITY BIOSENSORS Resolution Enhancement in Surface Plasmon Resonance Sensor Based on Waveguide Coupled Mode by Combining a Bimetallic Approach Article 10.3390/s101211390 1 SENSORS, v.10, no.12, pp.11390 - 11399 SENSORS 10 12 11390 11399 scie scopus 000285708700051 2-s2.0-78650288422 Chemistry, Analytical Engineering, Electrical & Electronic Instruments & Instrumentation Chemistry Engineering Instruments & Instrumentation Article SENSITIVITY BIOSENSORS waveguide coupled surface plasmon resonance bimetallic approach high resolution SPR sensor