@inproceedings{670642ca392642f5a0d43801c8508e82,
title = "Characterization of cells and bacteria by photophoretic velocimetry",
abstract = "The migration induced by intensive light is termed photophoresis. We could show that the evaluation of light-induced velocities of microparticles, bacteria and cells suspended in water is valuable for the prediction of their intrinsic properties. Two different laser setups were evaluated for photophoretic migration, a He-Ne laser (P = 45 mW, λ = 633 nm) and a diode-pumped cw-Nd:YAG (P = 1.1 W, λ = 532 nm). When analyzing the migration behavior of particles, we find significant differences depending on both, geometrical size and refractive index. We describe migration of PS particles of different size as well as with different refractive index but same diameter, SiO 2 and melamine resin. The potential for the separation of biological matter is shown as velocity distributions of heat killed bacteria of Escherichia coli, Salmonella enteritidis, and baker's yeast is reported.",
keywords = "Photophoresis, microorganisms, microparticles, optical properties, radiation pressure",
author = "Clemens Helmbrecht and Reinhard Niessner and Christoph Haisch",
year = "2008",
doi = "10.1117/12.762095",
language = "English",
isbn = "9780819470348",
series = "Progress in Biomedical Optics and Imaging - Proceedings of SPIE",
booktitle = "Imaging, Manipulation, and Analysis of Biomolecules, Cells, and Tissues VI",
note = "Imaging, Manipulation, and Analysis of Biomolecules, Cells, and Tissues VI ; Conference date: 21-01-2008 Through 23-01-2008",
}