Browsing by Subject "Critical Casimir forces"

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    Experimental investigation of critical Casimir forces in binary liquid mixtures by blinking optical tweezers
    (OSA, 2017) Magazzu, Alessandro; Schmidt, F.; Callegari, Agnese; Gambassi, A.; Dietrich, S.; Volpe, Giovanni
    We investigate, for the first time and by blinking optical tweezers, the effects of critical Casimir forces (CCFs) on the free dynamics of a pair of spherical colloidal particles, immersed in binary liquid mixtures upon approaching their critical points.
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    Nonadditivity of critical Casimir forces
    (OSA, 2017) Callegari, Agnese; Paladugu, Sathyanarayana; Tuna, Yazgan; Barth, Lukas; Dietrich, S.; Gambassi, A.; Volpe, Giovanni
    We provide the first experimental evidence of nonadditivity for critical Casimir forces: the force that two colloidal particles exert together on a third one differs from the sum of the forces they exert separately.