One-shot measurement of the air-liquid interface effect by a spectral-domain low-coherence dynamic light scattering technique

T. Watarai; T. Iwai

doi:10.1117/12.2023004

19 September 2013 One-shot measurement of the air-liquid interface effect by a spectral-domain low-coherence dynamic light scattering technique

T. Watarai, T. Iwai

Author Affiliations +

Proceedings Volume 8839, Dimensional Optical Metrology and Inspection for Practical Applications II; 88390H (2013) https://doi.org/10.1117/12.2023004
Event: SPIE Optical Engineering + Applications, 2013, San Diego, California, United States

Abstract

The Brownian motion of particles close to the interface between air and liquid is investigated using the one-shot measurement of temporal autocorrelation functions as a function of the distance from the interface by using a spectraldomain low-coherence dynamic light scattering. The technique is based on the principle of spectral-domain optical coherence tomography combined with that of dynamic light scattering. It is experimentally found that Brownian motion is suppressed in the region close to the air-liquid interface, but increases consistently with distance from the liquid surface, until free Brownian motion occurs. The results confirm the potential of the proposed technique for metrological applications.

Citation Download Citation

T. Watarai and T. Iwai "One-shot measurement of the air-liquid interface effect by a spectral-domain low-coherence dynamic light scattering technique", Proc. SPIE 8839, Dimensional Optical Metrology and Inspection for Practical Applications II, 88390H (19 September 2013); https://doi.org/10.1117/12.2023004

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