Search Results - "Steffen, J H"

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    Search for axionlike particles using a variable-baseline photon-regeneration technique by Chou, A S, Wester, W, Baumbaugh, A, Gustafson, H R, Irizarry-Valle, Y, Mazur, P O, Steffen, J H, Tomlin, R, Yang, X, Yoo, J

    Published in Physical review letters (29-02-2008)
    “…We report the first results of the GammeV experiment, a search for milli-eV mass particles with axionlike couplings to two photons. The search is performed…”
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    Journal Article
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    Laboratory constraints on chameleon dark energy and power-law fields by Steffen, J H, Upadhye, A, Baumbaugh, A, Chou, A S, Mazur, P O, Tomlin, R, Weltman, A, Wester, W

    Published in Physical review letters (28-12-2010)
    “…We report results from a search for chameleon particles created via photon-chameleon oscillations within a magnetic field. This experiment is sensitive to a…”
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    Journal Article
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    Search for chameleon particles using a photon-regeneration technique by Chou, A S, Wester, W, Baumbaugh, A, Gustafson, H R, Irizarry-Valle, Y, Mazur, P O, Steffen, J H, Tomlin, R, Upadhye, A, Weltman, A, Yang, X, Yoo, J

    Published in Physical review letters (23-01-2009)
    “…We report the first results from the GammeV search for chameleon particles, which may be created via photon-photon interactions within a strong magnetic field…”
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    Journal Article
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    An analysis of the transit times of TrES-1b by Steffen, Jason H., Agol, Eric

    “…The presence of a second planet in a known, transiting-planet system will cause the time between transits to vary. These variations can be used to constrain…”
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    Journal Article
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    A limit on the presence of Earth-mass planets around a Sun-like star by Agol, Eric, Steffen, Jason H.

    “…We present a combined analysis of all publicly available visible Hubble Space Telescope observations of transits of the planet HD 209458b. We derive the times…”
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    Journal Article
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    Biocompatible surfaces by immobilization of heparin on diamond-like carbon films deposited on various substrates by Steffen, Hans Joachim, Schmidt, Jens, Gonzalez-Elipe, Agustin

    Published in Surface and interface analysis (01-06-2000)
    “…Although graphitic carbon has been known and used as a biomaterial for a very long time, the excellent biocompatibility of diamond‐like carbon (DLC) films has…”
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    Journal Article Conference Proceeding
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    Structural and functional analysis of aquaporin-2 mutants involved in nephrogenic diabetes insipidus by Hagströmer, Carl Johan, Hyld Steffen, Jonas, Kreida, Stefan, Al-Jubair, Tamim, Frick, Anna, Gourdon, Pontus, Törnroth-Horsefield, Susanna

    Published in Scientific reports (06-09-2023)
    “…Aquaporins are water channels found in the cell membrane, where they allow the passage of water molecules in and out of the cells. In the kidney collecting…”
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    Journal Article
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    Constraining chameleon field theories using the GammeV afterglow experiments by Upadhye, A, Steffen, J. H, Weltman, A

    Published 19-11-2009
    “…Phys.Rev.D81:015013,2010 The GammeV experiment has constrained the couplings of chameleon scalar fields to matter and photons. Here we present a detailed…”
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    Journal Article
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    Ion-beam-induced crystallization of carbon-implanted silicon studied by auger electron spectroscopy by Steffen, Hans Joachim

    Published in Surface and interface analysis (01-10-1998)
    “…The influence of high‐energy Si+ irradiation on carbon‐implanted silicon at low temperature was studied. C+ Ions of kinetic energy 25 keV were implanted into…”
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    Journal Article
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    Laboratory Constraints on Chameleon Dark Energy and Power-Law Fields by Steffen, J. H., Baumbaugh, A., Chou, A. S., Mazur, P. O., Tomlin, R., Wester, W., Upadhye, A., Weltman, A.

    Published in Physical review letters (31-12-2010)
    “…We report results from a search for chameleon particles created via photon-chameleon oscillations within a magnetic field. This experiment is sensitive to a…”
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    Journal Article
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    The climate of HD 189733b from fourteen transits and eclipses measured by Spitzer by Agol, E, Cowan, N. B, Knutson, H. A, Deming, D, Steffen, J. H, Henry, G. W, Charbonneau, D

    Published 26-07-2010
    “…Astrophys.J.721:1861-1877,2010 We present observations of seven transits and seven eclipses of the transiting planet system HD 189733 taken with Spitzer IRAC…”
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    Journal Article
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    Ion beam synthesis by tungsten-implantation into 6H-silicon carbide by Weishart, H., Steffen, H.J., Matz, W., Voelskow, M., Skorupa, W.

    “…Synthesis of a highly conductive surface layer on 6H-silicon carbide was achieved by high-dose, room temperature implantation of tungsten at 200 keV…”
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    Journal Article
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    A search for chameleon particles using a photon regeneration technique by Chou, A. S, Wester, W, Baumbaugh, A, Gustafson, H. R, Irizarry-Valle, Y, Mazur, P. O, Steffen, J. H, Tomlin, R, Upadhye, A, Weltman, A, Yang, X, Yoo, J

    Published 02-02-2009
    “…Phys.Rev.Lett.102:030402,2009 We report the first results from the GammeV search for chameleon particles, which may be created via photon-photon interactions…”
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    Journal Article
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