<< Floppy microscale spring networks are widely studied in theory and simulations, but no well-controlled experimental system currently exists. >>
AA << show that square lattices consisting of colloid-supported lipid bilayers functionalized with DNA linkers act as microscale floppy spring networks. (AA) extract their normal modes by inverting the particle displacement correlation matrix, showing the emergence of a spectrum of soft modes with low effective stiffness in addition to stiff modes that derive from linker interactions. >>
<< Evaluation of the softest mode, a uniform shear mode, reveals that shear stiffness decreases with lattice size. >>
AA << results reveal the importance of entropic steric effects. >>
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Julio Melio, Silke E. Henkes, Daniela J. Kraft. Soft and Stiff Normal Modes in Floppy Colloidal Square Lattices. Phys. Rev. Lett. 132, 078202. Feb 14, 2024.
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Keywords: gst, particle, nano, colloids, network, colloidal network
