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Refractive index fluctuation

The WDMSPR sensor approach offers the benefit of multichannel performance without increasing complexity and costs of the sensor system. In addition, the WDMSPR sensors make it possible to discriminate effects occurring in the proximity of sensor surface (specific binding, non-specific adsorption) from those occurring in the whole medium (interfering background refractive index fluctuations) which is a prerequisite for robust referencing ". ... [Pg.112]

The interferometric sensor platform is highly sensitive and is the only one that provides an internal reference for compensation of refractive-index fluctuations and unspecific adsorption. Interferometric sensors have a broader dynamic range than most other types of sensors and show higher sensitivity as compared to other integrated optical biosensors . Due to the high sensitivity of the interferometer sensor the direct detection of small... [Pg.131]

Refractive index fluctuates in the range 1.37 - 1.57 depending on the basic siloxane chain framework (Fig. 1). The influence of the siloxane chain framework on the refractive index was studied over a wide temperature range, and hysteresis was found on the curve of refractive index vs temperature (Fig. 2). [Pg.656]

In general, the source of light scattering from a polymer (or polyelectrolyte) solution is the existence of spatial and temporal fluctuations in refractive index in this scattering medium. The overall scattering intensity measured in an SLS experiment is proportional to the average of the square of refractive index fluctuations in the scattering volume,... [Pg.2]

Assuming that the refractive index fluctuation, An, is proportional to the concentration fluctuation, Ac, i.e. ... [Pg.439]

Modulation Noise. This noise is generated by scintillations or system modulations, and it is directly proportional to the signal level. It can be caused by refractive index fluctuations in very long-path atmospheric measurements and in astronomical measurements, or by faulty design in laboratory instrumentation. [Pg.438]

Refractive Index Fluctuations in Glassy Polymers. Fluctuations in the refractive index within the bulk of a polymer can arise becanse of various optical inhomogeneities. Those fluctuations may be described by a radial correlation function, defined as... [Pg.5351]

For PMMA the root mean square refractive index fluctuation is around 2 x 10 The larger the fluctuations, the larger is the scattering intensity. This is critical for applications such as fiber optics, where transmission distances are critical. [Pg.5351]

Problem 2.27 For a diblock copolymer or a random copolymer consisting of monomers a and b that have different contrasts to the solvent, the refractive index fluctuation A n(r) due to concentration fluctuation has two parts ... [Pg.144]

Hall D.G. In-plane scattering in planar optical waveguides refractive-index fluctuations and surface roughness. J. Opt. Soc. Am. 1985 2 747-752... [Pg.1029]

The Debye-Bueche analysis (5,6) was employed to obtain the correlation length, and the mean-square refractive index fluctuation, of the gels from... [Pg.39]

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See also in sourсe #XX -- [ Pg.2 ]



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