Publications [#234835] of Benjamin J. Wiley

Journal Articles

1. Fu, E; Ramsey, SA; Chen, J; Chinowsky, TM; Wiley, B; Xia, Y; Yager, P, Resonance wavelength-dependent signal of absorptive particles in surface plasmon resonance-based detection, Sensors and Actuators B Chemical, vol. 123 no. 1 (April, 2007), pp. 606-613, Elsevier BV, ISSN 0925-4005 [doi]
   (last updated on 2026/01/15)

   Abstract:
   We describe the resonance wavelength-dependent signal of absorptive particles in surface plasmon resonance (SPR)-based detection using both modeling and experimental results. The particles, gold nanocages, have a significant absorption cross-section in the near-infrared (NIR), resulting in a wavelength-dependent refractive index as measured by SPR. The SPR signal due to the nanocages varies by four-fold over resonance wavelengths from 650 nm to 950 nm. The greatest SPR signal occurs at the longest resonance wavelengths; its magnitude is due to the inherent increase in sensitivity of SPR on gold with increasing wavelength and the optical absorption properties of the nanocages. © 2006 Elsevier B.V. All rights reserved.