9 February 2011 Nanoplasmonic resonance integrated with optofluidics for biochemical sensing and identification
Author Affiliations +
Proceedings Volume 7943, Silicon Photonics VI; 794304 (2011); doi: 10.1117/12.877214
Event: SPIE OPTO, 2011, San Francisco, California, United States
Abstract
Nano-Plasmonics possesses unique physical properties that enable localization of optical fields beyond the diffraction limit. These highly confined/nanoscale optical modes will enhance light/matter interactions in systems with free electrons in micro/nanoscale geometric structures. Metal-dielectric fluid interfaces can support surface plasmon polaritons (SPPs), which are electromagnetic modes interacting with free electron oscillations. Research work is described on using optofluidic plasmonic chips for implementation of an optofluidic plasmonic sensor, demonstrating in situ, real time, label-free detection of protein-protein interaction. SPP lineshape is modified from Fano to Lorentz for increase of the figure of merit to increase the limit of detection. Novel metal-dielectric nanoresonator composites is presented to increase the surface sensitivity by exciting localized surface plasmon resonance (LSPR) in combination with SPP readout, enabling higher surface field localization. In order to solve the long time challenging issue of overlapping molecule of interest onto LSPR to realize the maximal interaction cross-section, micro-nanofluidics integrated nanochip was developed. We employed electrokinetic forces to control and manipulate the nanoparticles onto the predefined positions.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
L. Pang, H. M. Chen, J. N. Ptasinski, P.-C. Sun, Y. Fainman, "Nanoplasmonic resonance integrated with optofluidics for biochemical sensing and identification", Proc. SPIE 7943, Silicon Photonics VI, 794304 (9 February 2011); doi: 10.1117/12.877214; https://doi.org/10.1117/12.877214
PROCEEDINGS
9 PAGES


SHARE
KEYWORDS
Nanoparticles

Metals

Dielectrics

Nanophotonics

Refractive index

Sensors

Biosensing

RELATED CONTENT

Biosensing using plasmonic waveguides embedded in CYTOP
Proceedings of SPIE (October 24 2012)
Tunable graphene-based SPR sensors
Proceedings of SPIE (May 31 2013)
Optical sensing based on localized surface plasmons
Proceedings of SPIE (July 07 2005)

Back to Top