Correction to: European Biophysics Journal https://doi.org/10.1007/s00249-020-01440-1

Due to wrong coding usage, the text included ‘l’ before the Eqs. (8) and (11) in the original publication of the article. The correct equations are given below:

$$ \begin{aligned} \Delta \mu _{{\text{N}}}^{{{0}}} = & \mu _{{\text{N}}}^{{{0}}} \left( E \right) - \mu _{{\text{N}}}^{{{0}}} (E = 0) \\ = & \gamma a + \frac{k}{a} - 2\gamma a_{0} = \gamma \frac{{\left( {a - a_{0} } \right)^{2} }}{a} \approx \gamma a_{0} \eta ^{2} = \frac{{a_{0} }}{{16\gamma }}\sigma _{{\text{c}}}^{{{2}}} \\ \end{aligned} $$
(8)
$$ \begin{aligned} U\left( {r,\sigma _{{\text{c}}} } \right) = & \mu _{{{\text{N,total}}}}^{{{0}}} (r,\sigma _{{\text{c}}} ) + 2\pi r\Gamma - \mu _{{{\text{N,total}}}}^{{{0}}} (0,\sigma _{{\text{c}}} ) \\ = & 2\pi r\Gamma + \left( {\gamma a + \frac{k}{a} - \pi r^{2} \sigma _{{\text{c}}} } \right) - \left( {\gamma a + \frac{k}{a}} \right) \\ = & 2\pi r\Gamma - \pi r^{2} \sigma _{{\text{c}}} \\ \end{aligned} $$
(11)

The original article has been updated.