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. 2014 Jan 8;119:674–682. doi: 10.6028/jres.119.029

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The Journal of Research of the National Institute of Standards and Technology is a publication of the U.S. Government. The papers are in the public domain and are not subject to copyright in the United States. Articles from J Res may contain photographs or illustrations copyrighted by other commercial organizations or individuals that may not be used without obtaining prior approval from the holder of the copyright.

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Fig. 5 — Three flow-imaging micrographs of PMMA beads (≈ 69 µm diameter) suspended in a 2P-water mixture (Δn ≈ 0.007). Bead (A) was identified by automated software as only an arc; beads (B) and (C) were identified as full, filled circles.