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Sökning: WFRF:(Crippa Federica)

  • Resultat 1-3 av 3
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  • Crippa, Federica, et al. (författare)
  • Probing nano-scale viscoelastic response in air and in liquid with dynamic atomic force microscopy
  • 2018
  • Ingår i: Soft Matter. - : Royal Society of Chemistry. - 1744-683X .- 1744-6848. ; 14:19, s. 3998-4006
  • Tidskriftsartikel (refereegranskat)abstract
    • We perform a comparative study of dynamic force measurements using an Atomic Force Microscope (AFM) on the same soft polymer blend samples in both air and liquid environments. Our quantitative analysis starts with calibration of the same cantilever in both environments. Intermodulation AFM (ImAFM) is used to measure dynamic force quadratures on the same sample. We validate the accuracy of the reconstructed dynamic force quadratures by numerical simulation of a realistic model of the cantilever in liquid. In spite of the very low quality factor of this resonance, we find excellent agreement between experiment and simulation. A recently developed moving surface model explains the measured force quadrature curves on the soft polymer, in both air and liquid.
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  • Durante, Federica, et al. (författare)
  • Ambivalent stereotypes link to peace, conflict, and inequality across 38 nations
  • 2017
  • Ingår i: Proceedings of the National Academy of Sciences of the United States of America. - : National Academy of Sciences. - 0027-8424 .- 1091-6490. ; 114:4, s. 669-674
  • Tidskriftsartikel (refereegranskat)abstract
    • A cross-national study, 49 samples in 38 nations (n = 4,344), inves- tigates whether national peace and conflict reflect ambivalent warmth and competence stereotypes: High-conflict societies (Pakistan) may need clearcut, unambivalent group images distinguishing friends from foes. Highly peaceful countries (Denmark) also may need less ambivalence because most groups occupy the shared national identity, with only a few outcasts. Finally, nations with interme- diate conflict (United States) may need ambivalence to justify more complex intergroup-system stability. Using the Global Peace Index to measure conflict, a curvilinear (quadratic) relationship be- tween ambivalence and conflict highlights how both extremely peaceful and extremely conflictual countries display lower stereo- type ambivalence, whereas countries intermediate on peace-conflict present higher ambivalence. These data also replicated a linear inequality–ambivalence relationship. 
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  • Resultat 1-3 av 3

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