# softmatter:Israelachvili packing factor

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The geometry of associated structures depends upon "packing" properties of the molecule: the optimal area of the head group, a0, volume of the chain, V, and the critical length of the tether, lc.

By relating these quantities, we arrive at the Israelachvili packing factor = $\frac{V}{a_{0}l_{c}}$

Adapted from [1].

## Structural Trends

Adapted from [1].