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2004 | 2 | 4 | 636-644
Tytuł artykułu

Observation of magnetic field-induced contraction of fission yeast cells using optical projection microscopy

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The charges in live cells interact with or produce electric fields, which results in enormous dielectric responses, flexoelectricity, and related phenomena. Here we report on a contraction of Schizosaccharomyces pombe (fission yeast) cells induced by magnetic fields, as observed using a phase-sensitive projection imaging technique. Unlike electric fields, magnetic fields only act on moving charges. The observed behavior is therefore quite remarkable, and may result from a contractile Lorentz force acting on diamagnetic screening currents. This would indicate extremely high intracellular charge mobilities. Besides, we observed a large electro-optic response from fission yeast cells.

Opis fizyczny
  • Fermi National Accelerator Laboratory, P.O. Box 500, 60510-0500, Batavia, Illinois, USA
  • Department of Physics, University of Houston, 77204-5005, Houston, Texas, USA
  • Department of Physics, University of Houston, 77204-5005, Houston, Texas, USA
  • [1] G.A. Morton and E.G. Ramberg: “Point projector electromicroscope”, Phys. Rev., Vol. 56, (1939), p. 705.[Crossref]
  • [2] E.W. Müller: “Field Ionization and Field Ion Microscopy”, Advances in Electronics and Electron Physics, Vol. 13, (1960), pp. 83–179.
  • [3] H.-W. Fink, W. Stocker and H. Schmid: “Holography with low energy electrons”, Phys. Rev. Lett., Vol. 65, (1990), pp. 1204–1206.[Crossref]
  • [4] V.T. Binh and V. Semet: “Low energy-electron diffraction by nano-objects in projection microscopy without magnetic shielding”, Appl. Phys. Lett., Vol. 65, (1994), pp. 2493–2495.[Crossref]
  • [5] Ch. Adessi, M. Devel, V.T. Binh, Ph. Lambin and V. Meunier: “Influence of structural defects on Fresnel projection microscope images of carbon nanotubes: Implications for the characterization of nanoscale devices”, Phys. Rev. B, Vol. 61, (2000), pp. 13385–13389.[Crossref]
  • [6] D. Gabor: “A New Microscopic Principle”, Nature, Vol. 161, (1948), pp. 777–778.
  • [7] E. Hecht and A. Zajac: Optics, 2nd Ed., Addison-Wesley, Menlo Park, California, 1975.
  • [8] A. Mayer: “Electronic diffraction tomography by Green’s functions and by singular value decompositions”, Phys. Rev. B, Vol. 63, (2001), pp. 035408–035413.[Crossref]
  • [9] H.J. Kreuzer, K. Nakamura, A. Wierzbicki, H.-W. Fink andH. Schmid: “Theory of the Point Source Electron Microscope”, Ultramicroscopy, Vol. 45, (1992), pp. 381–403.[Crossref]
  • [10] J.B. Tiller, A. Barty, D. Paganin and K.A. Nugent: “The Holographic twin image problem: a Deterministic phase solution”, Optics Communications, Vol. 183, (2000), pp. 7–14.[Crossref]
  • [11] J.R. Broach, J.R. Pringle and E.W. Jones: The Molecular and Cellular Biology of the Yeast Saccharomyces, Cold Spring Harbor Laboratory Press, 1991.
  • [12] C. Prodan and E. Prodan: “The dielectric behaviour of living cell suspensions”, J. Phys. D: Appl. Phys., Vol. 32, (1999), pp. 335–343.[Crossref]
  • [13] H. Fröhlich: “Long Range Coherence and Energy Storage in Biological Systems”, Int. J. Quant. Chem., Vol. II, (1968), pp. 641–649.[Crossref]
  • [14] H. Fröhlich: “Long Range Coherence and the Action of Enzymes”, Nature, Vol. 228, (1970), p. 1093.[Crossref]
  • [15] H. Fröhlich: “The extraordinary dielectric properties of biological materials and the action of enzymes”, Proc. Natl. Acad. Sci. USA, Vol. 72, (1975), pp. 4211–4215.[Crossref]
  • [16] H. Fröhlich: “Coherent excitations in active biological systems”, In: F. Guttman and H. Keyzer (Eds.): Modern Biochemistry, Plenum Press, New York, 1986.
  • [17] N.E. Mavromatos andD.V. Nanopoulos: “Quantum Brain?”, Int. J. Mod. Phys. B12, (1998), pp. 517–542.[Crossref]
  • [18] B. Julsgaard, A. Kozhekin andE.S. Polzik: “Experimental long-lived entanglement of two macroscopic objects”, Nature, Vol. 413, (2001), pp. 400–403.[Crossref]
  • [19] E. Altewischer, M.P. van Exter andJ.P. Woerdman: “Plasmon-assisted transmission of entangled photons”, Nature, Vol. 418, (2002), pp. 304–306.[Crossref]
  • [20] W. Barnes: “Survival of the entanglement”, Nature, Vol. 418, (2002), pp. 281–282.[Crossref]
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