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(a) Device structure of the electro-optically modulated LSPR biosensor (Inset: cross sectional view). (b) Experimental setup for LSPR-induced phase interrogation (M: mirror; PBS: polarizing beam splitter; AOM: acousto-optic modulator; BS: beam splitter; PD: photodetector).
Dependence of phase difference on (a) incident angle and (b) analyte concentration.
Dependence of LSPR-induced phase difference on (a) beta-blocker concentration and (b) applied voltage for the LSPR biosensor with waveguide width of .
Dependence of linear regression slope on the beta-blocker concentration (a) for different waveguide width and (b) for different gold film thickness for the electro-optically modulated LSPR biosensors.
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