AI Article Synopsis
- Forward scattering is studied using evanescent wave coupled cavity ringdown spectroscopy (EW-CRDS) to investigate the behavior of polystyrene microspheres (PSMs) in colloidal suspensions.
- EW-CRDS enhances weak absorption signals and allows for the detection of PSMs by measuring their extinction properties, showing significant results even at very low absorbance levels.
- The research focuses on how the volume fraction of microparticles affects scattering dynamics in aqueous media, which could have important applications in fields like biology and metrology.
Article Abstract
Forward scattering is an essential tool for investigating the colloidal suspension of polystyrene microspheres (PSMs). Evanescent wave coupled cavity ringdown spectroscopy (EW-CRDS) shows the anomalous extinction behavior in the limit of PSM particles that is much larger than the wavelength. EW-CRDS is a highly sensitive technique that improves weak absorption signals by enhancing the absorption path length, allowing for probing a range of processes at the solid/liquid interface by assessing the extinction properties. Additionally, it possesses the ability to sense a minimum absorbance of 1.2 × 10. EW-CRDS provides sufficient accuracy to detect correlation effects for PSMs in water at the interfacial region and their influence on forward scattering or extinction. In this work, we discuss the impact of volume fraction on the extinction of scatterers composed of microparticles in aqueous media. The findings of this study will contribute to a deeper understanding of the scattering dynamics in colloidal suspensions, with potential applications in various fields, including biology and metrology.
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| http://dx.doi.org/10.1039/d3an02225k | DOI Listing |
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