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  1. No Access

    Article

    Long-time damage under creep experiments in disordered materials: Transition from exponential to logarithmic fracture dynamics

    Some materials, and in particular some polymer materials, can display an important range of stress levels for which slow and progressive damage can be observed before they finally break. In creep or fatigue ex...

    C. Fusco, L. Vanel, D. R. Long in The European Physical Journal E (2013)

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    Article

    Mechanical properties of thin confined polymer films close to the glass transition in the linear regime of deformation: Theory and simulations

    Over the past twenty years experiments performed on thin polymer films deposited on substrates have shown that the glass transition temperature T g can either d...

    A. Dequidt, D. R. Long, P. Sotta, O. Sanséau in The European Physical Journal E (2012)

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    Article

    Current measurements of the gravitational «Constant» as a function of the mass separation

    A number of works has now been completed in an effort to check on my earlier work showing a variation of the gravitational constant with mass separation. The precise null experiment of Speroet al. turns out to be...

    D. R. Long in Il Nuovo Cimento B (1971-1996) (1981)

  4. No Access

    Article

    Vacuum polarization and non-Newtonian gravitation

    Gell-Mann and Low have emphasized that, as first pointed out by Uehling and Serber, vacuum polarization effects produce a logarithmic modification to the Coulomb potential at small distances. I point out here ...

    D. R. Long in Il Nuovo Cimento B (1971-1996) (1980)