Publications [#262672] of Tuan Vo-Dinh

Papers Published

1. Live, LS; Dhawan, A; Gibson, KF; Poirier-Richard, H-P; Graham, D; Canva, M; Vo-Dinh, T; Masson, J-F, Angle-dependent resonance of localized and propagating surface plasmons in microhole arrays for enhanced biosensing., Analytical and bioanalytical chemistry, vol. 404 no. 10 (December, 2012), pp. 2859-2868 [22760504], [doi]
   (last updated on 2026/01/19)

   Abstract:
   The presence of microhole arrays in thin Au films is suited for the excitation of localized and propagating surface plasmon (SP) modes. Conditions can be established to excite a resonance between the localized and propagating SP modes, which further enhanced the local electromagnetic (EM) field. The co-excitation of localized and propagating SP modes depends on the angle of incidence (θ(exc)) and refractive index of the solution interrogated. As a consequence of the enhanced EM field, enhanced sensitivity and an improved response for binding events by about a factor of 3 to 5 was observed with SPR sensors in the Kretschmann configuration for a set of experimental conditions (λ(SPR), θ(exc), and η). Thus, microhole arrays can improve sensing applications of SPR based on classical prism-based instrumentation and are suited for SP-coupled spectroscopic techniques.