Elasticity and critical bending moment of model colloidal aggregates
JP Pantina, EM Furst - Physical review letters, 2005 - APS
JP Pantina, EM Furst
Physical review letters, 2005•APSThe bending mechanics of singly bonded colloidal aggregates are measured using laser
tweezers. We find that the colloidal bonds are capable of supporting significant torques,
providing a direct measurement of the tangential interactions between particles. A critical
bending moment marks the limit of linear bending elasticity, past which small-scale
rearrangements occur. These mechanical properties underlie the rheology and dynamics of
colloidal gels formed by diffusion-limited cluster aggregation, and give critical insight into the …
tweezers. We find that the colloidal bonds are capable of supporting significant torques,
providing a direct measurement of the tangential interactions between particles. A critical
bending moment marks the limit of linear bending elasticity, past which small-scale
rearrangements occur. These mechanical properties underlie the rheology and dynamics of
colloidal gels formed by diffusion-limited cluster aggregation, and give critical insight into the …
The bending mechanics of singly bonded colloidal aggregates are measured using laser tweezers. We find that the colloidal bonds are capable of supporting significant torques, providing a direct measurement of the tangential interactions between particles. A critical bending moment marks the limit of linear bending elasticity, past which small-scale rearrangements occur. These mechanical properties underlie the rheology and dynamics of colloidal gels formed by diffusion-limited cluster aggregation, and give critical insight into the contact interactions between Brownian particles.
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