Waveguides, planar applications

AuNPs on Planar Waveguides Without Application of LSPR. 214... 

AuNPs on Planar Waveguides with Application of LSPR. 215... 

In addition, the integration of modem optical technology and electrochemical techniques for sensing applications appears to be a powerful new approach. A new type of optoelectrochemical sensor for chlorine, based on an electrochromic thin-film sensing layer placed on top of a planar waveguide, has demonstrated the applicability of this combined approach. 

FIGURE 5.18 Illustration of the flow confinement concept. In microchannels, a sample flow is joined with a confinement flow (e.g., water or sample medium) in a perpendicular orientation. Under laminar flow conditions, no mixing occurs. The sample flow is confined into a thin layer of higher velocity. For immunoassay application, rabbit IgG is immobilized on a planar waveguide and Cy5-labeled anti-rabbit IgG is introduced as analyte in the sample flow [694]. Reprinted with permission from the American Chemical Society. 

Hofmann, O., Viorin, G., Niedermann, P., Manz, A., 3D-flow confinement for efficient sample delivery Application to immunoassays on planar optical waveguides. Micro Total Analysis Systems, Proceedings 5th pTAS Symposium, Monterey, CA, Oct. 21-25, 2001, 133-134. 

These fundamental works and discoveries have stimulated an avalanche of investigations on metal nanoparticles in the gas phase, in solution, and on surfaces [43]. In this chapter, the focus will be on nanoparticles on surfaces and, in particular, on gold nanoparticles (AuNPs) on waveguides, both planar strucmres and fibers, as well as photonic crystals with the aim of sensor application. 

Planar waveguides are also used for photometric transducers. Recently, there have been applications of photolithographic methods to create miniaturized waveguides, or other microfabrication techniques to produce thin films of organic materials for optical waveguides. For example, Hanken and Corn... 

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