and long segments have $n_{m}=1$, $7$, and $15$ monomers per segment respectively. The flexible chain is a normal self-avoiding chain with FENE bond between each monomer.

For the chains with normal stiff segments, we used the following value for the FENE bond spring constant $K_{\mathrm F}=200 \:\frac{k_{\mathrm B} T}{\sigma^{2}}$, and the bending constant for bond angle potential is $K_{\mathrm a}=200 \:\frac{k_{\mathrm B} T}{\sigma^{2}}$. For the chains with extra stiff segments, we used $K_{\mathrm F}=400 \:\frac{k_{\mathrm B} T}{\sigma^{2}}$ and $K_{\mathrm a}=600 \:\frac{k_{\mathrm B} T}{\sigma^{2}}$ for FENE and bond angle potentials respectively. The flexible bond between segments, inter-stiffness, is a FENE bond with $K_{\mathrm F}=15 \:\frac{k_{\mathrm B} T}{\sigma^{2}}$. The maximal bond stretching was set to $\Delta r_{\mathrm {max}}=1.5\:\sigma$ for all FENE bonds.

The normal-stiff segment has persistence length of $l_{\rm p}\approx15\sigma$, where it is $l_{\rm p}\approx27\sigma$ for extra-stiff segment. The persistence lengths of the chains made by these normal-stiff short and extra-stiff long segments are $l_{\rm p}\approx3.8\sigma$ and $7\sigma$ respectively. The average length of the long and short segments are $11.6 \sigma$ and $5.2 \sigma$ respectively. The average unconfined radii of gyration, $\langle R_{\rm g}\rangle $, of flexible, short, and longer segment chains are $33\sigma$, $36\sigma$, and $42 \sigma$ respectively. We define 