Unified Mie and fractal scattering by biological cells and subcellular structures

Tao T. Wu; Jianan Y. Qu; Min Xu

doi:10.1364/OL.32.002324

Unified Mie and fractal scattering by biological cells and subcellular structures

Tao T. Wu, Jianan Y. Qu, and Min Xu

Optics Letters
Vol. 32,
Issue 16,
pp. 2324-2326
(2007)
•https://doi.org/10.1364/OL.32.002324

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Tao T. Wu, Jianan Y. Qu, and Min Xu, "Unified Mie and fractal scattering by biological cells and subcellular structures," Opt. Lett. 32, 2324-2326 (2007)

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Related Topics
Table of Contents Category
- Scattering
Optics & Photonics Topics
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The topics in this list come from the OSA Optics and Photonics Topics applied to this article.
Previously assigned OCIS codes
- Scattering measurements (120.5820)
- Cell analysis (170.1530)
- Scattering (290.0290)
- Mie theory (290.4020)

About this Article
History
- Original Manuscript: April 17, 2007
- Revised Manuscript: June 8, 2007
- Manuscript Accepted: June 20, 2007
- Published: August 2, 2007
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Abstract

Angle-resolved light scattering spectroscopy of biological cells is investigated in the visible wavelength range. A unified Mie and fractal model is shown to provide an accurate global agreement with light scattering spectra from 1.1° to 165° scattering angles. It is found that light scattering in forward directions $(< 8 °)$ is dominated by Mie scattering by the bare cell and nucleus, whereas light scattering at large angles $(> 20 °)$ is determined by fractal scattering by subcellular structures. The findings are consistent with the results of experimental investigation of the contributions of different cellular components to light scattering by cells.

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Measurement	Cell Suspension		Monolayer Cells
Measurement	Mie	Fractal	Fractal
Before acetic acid (AA)
	$n_{Cell} = 1.367$	$D_{f} = 4.38$	$D_{f} = 4.48$
		$β = 12.77$	$β = 18.54$
	$n_{Nucleus} = 1.394$	$l_{\max} = 0.35$	$l_{\max} = 0.56$
After AA
	$n_{Cell}^{'} = 1.360$	$D_{f}^{'} = 4.61$	$D_{f}^{'} = 4.77$
		$β^{'} = 23.08$	$β^{'} = 34.21$
	$n_{Nucleus}^{'} = 1.412$	$l_{\max}^{'} = 0.27$	$l_{\max}^{'} = 0.45$
$Δ n_{2} ∕ Δ n_{1}$	—	1.81	1.85

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