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  1. Article

    Open Access

    Imaging Atomic Scale Dynamics on III–V Nanowire Surfaces During Electrical Operation

    As semiconductor electronics keep shrinking, functionality depends on individual atomic scale surface and interface features that may change as voltages are applied. In this work we demonstrate a novel device ...

    J. L. Webb, J. Knutsson, M. Hjort, S. R. McKibbin, S. Lehmann… in Scientific Reports (2017)

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  2. No Access

    Article

    Blood fatty acid composition in relation to allergy in children aged 2–9 years: results from the European IDEFICS study

    Blood polyunsaturated fatty acids (PUFA) are involved in allergy development, but the etiological role of n-6 and n-3 PUFA is still controversial. A European multicenter study of children (IDEFICS) provided th...

    A Mikkelsen, C Galli, G Eiben, W Ahrens… in European Journal of Clinical Nutrition (2017)

  3. No Access

    Article

    Electro-hydrodynamic propulsion of counter-rotating Pickering drops

    Insulating particles or drops suspended in carrier liquids may start to rotate with a constant frequency when subjected to a uniform DC electric field. This is known as the Quincke rotation electro-hydrodynami...

    P. Dommersnes, A. Mikkelsen, J.O. Fossum in The European Physical Journal Special Topics (2016)

  4. Article

    Open Access

    Observation of a topologically non-trivial surface state in half-Heusler PtLuSb (001) thin films

    The discovery of topological insulators, materials with bulk band gaps and protected cross-gap surface states in compounds such as Bi2Se3, has generated much interest in identifying topological surface states (TS...

    J. A. Logan, S. J. Patel, S. D. Harrington, C. M. Polley… in Nature Communications (2016)

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  5. Chapter and Conference Paper

    High-Order Harmonic Generation and Plasmonics

    Attosecond pulses allow for imaging of very fast processes, like electron dynamics. Stockman et al. suggested to use these pulses in connection with a Photoemission electron microscope (PEEM) to study the ultr...

    Eleonora Lorek, E. W. Larsen, C. M. Heyl… in Nano-Structures for Optics and Photonics (2015)

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  6. No Access

    Article

    Electrohydrodynamic controlled assembly and fracturing of thin colloidal particle films confined at drop interfaces

    Particles can adsorb strongly at liquid interfaces due to capillary forces, which in practice can confine the particles to the interface. Here we investigate the electrohydrodynamic flow driven packing and def...

    Z. Rozynek, P. Dommersnes, A. Mikkelsen… in The European Physical Journal Special Topi… (2014)

  7. No Access

    Article

    Transient electric birefringence of human erythroid spectrin dimers and tetramers at ionic strengths of 4 mm and 53 mm

    In conventional electrooptic studies the sample ionic strength must for technical reasons be kept below about 3 mm, which is only 2% of the ionic strength at physiological conditions. In particular for flexible ...

    A. Bjørkøy, A. Mikkelsen, A. Elgsaeter in European Biophysics Journal (1999)

  8. No Access

    Article

    Characteristic mechanical impedance of rheometers with axial symmetry. A theoretical and numerical analysis

    The strain wave field generated in a linear viscoelastic medium confined between two infinitely large parallel planar surfaces, one fixed and the other oscillating sinusoidally in its own plane, has been well ...

    A. Mikkelsen, K. D. Knudsen, Dr. A. Elgsaeter in Rheologica Acta (1992)

  9. No Access

    Article

    Mathematical analysis of rheometer dynamics using multi-segment models

    Mathematical analysis of rheometer dynamics in terms of multi-segment models is discussed. It is shown that the algebra involved in the analysis most often can be simplified significantly if standing rather th...

    K. D. Knudsen, A. Mikkelsen, Dr. A. Elgsaeter in Rheologica Acta (1992)

  10. No Access

    Article

    Measurement of the dynamic viscoelastic properties of polymer solutions using the Birnboim-Schrag multiple lump resonator. A theoretical and numerical study

    The Birnboim-Schrag multiple lumped resonator (MLR) is the most sensitive and precise instrument in existence for dynamic viscoelastic measurements on dilute low-viscosity polymer solutions in the frequency ra...

    A. Mikkelsen, K. D. Knudsen, Dr. A. Elgsaeter in Rheologica Acta (1992)

  11. No Access

    Article

    Torsional dynamics of the Birnboim-Schrag multiple lump resonator studied using TV-holography

    We have studied the torsional dynamics of the Birnboim-Schrag multiple lump resonator (MLR) using TV holography. The relative torsional displacement amplitudes have been determined for all resonator lumps at t...

    S. Ellingsrud, K. D. Knudsen, A. Mikkelsen, A. Elgsaeter, J. T. Malmo in Rheologica Acta (1992)

  12. No Access

    Article

    The human erythrocyte membrane skeleton may be an ionic gel

    Biochemical and biophysical observations indicate that the erythrocyte membrane skeleton is composed of a swollen network of long, flexible and ionizable macromolecules located at the cytoplasmic surface of th...

    B. T. Stokke, A. Mikkelsen, A. Elgsaeter in European Biophysics Journal (1986)

  13. No Access

    Article

    The human erythrocyte membrane skeleton may be an ionic gel

    In the first paper in this series (Stokke et al. Eur Biophys J 1986, 13:203–218) we developed the general theory of the mechanochemical properties and the elastic free energy of the protein gel — lipid bilayer...

    B. T. Stokke, A. Mikkelsen, A. Elgsaeter in European Biophysics Journal (1986)