title: Phase sensitive SPR sensor for wide dynamic range detection.
abstract: Phase detection has been utilized to enhance the sensitivity of surface plasmon resonance (SPR) sensors for a long time. However, an inherent drawback for phase sensitive SPR sensors are their limited dynamic range, which has greatly hindered wide applications of such sensors. In this Letter, a design combining phase detection and angular interrogation has been proposed to provide an SPR sensor with both high sensitivity and wide dynamic range. As a result, a resolution of 2.2×10-7RIU with a dynamic range of over 0.06 RIU has been achieved simultaneously. An added advantage of this design is the flexibility for sensitivity and dynamic range adjustment.
authors: Department of Electronic Engineering, the Chinese University of Hong Kong, Shatin, Hong Kong.
authors: Y H
authors: YH
authors: Huang
authors: H P
authors: HP
authors: Ho
authors: S Y
authors: SY
authors: Wu
authors: S K
authors: SK
authors: Kong
authors: W W
authors: WW
authors: Wong
authors: P
authors: P
authors: Shum
mesh_terms: D015374:Biosensing Techniques / Q000295:instrumentation* / Q000379:methods; D004867:Equipment Design; D012680:Sensitivity and Specificity; D020349:Surface Plasmon Resonance / Q000295:instrumentation* / Q000379:methods