A sketch map of -helix chains translocation through a nanopore. Here the nanopore length is , the average helical pitch is , and the diameter is . The red arrow represents the direction of external driving force.
(a) The dihedral angle of each bond for the 150-bond -helix chain at four different moments during the translocation process for one random run. Here and the translocation time of this run is . (b) The bond length distributions of the 150-bond -helix chain at three different driving forces with the middle bead of the chain just translocating through the nanopore.
The average translocation times as a function of chain lengths for three different chain models. (a) The -helix chains with , 20, and 200, and the SAW chains with in the inset. (b) Semirigid chains without any hydrogen bond interactions for , 20, and 200.
The scaling exponents as a function of driving forces for two different types of chains. The insert shows the mean-square end-to-end distance and the shape factor as a function of chain lengths . (a) The -helix chains. (b) Semirigid chain.
The average translocation times as a function of driving forces for three different chain lengths , 100, and 150. The solid curves represent the relation of .
The average waiting time of the bead for the 150-bond -helix chains with three different driving forces of , 26, and 100.
The resultant force acting on the 80th bead along the -axis direction during the waiting time of 80th bead for the 150-bond -helix chains at one run.
The distribution of translocation time for the 100-bond -helix chains with four different driving forces , 13.5, 26, and 100.
The average total number of -helix structures as a function of with three different driving forces for (a) and (b) . Here, represents the certain time of translocation process and is the translocation time of this run.
The average probability of forming the -helix structures for the bead of the 150-bond -helix chains at four different moments .
The average number of -helix structures as a function of driving force for the -helix chains with the middle bead of -helix chains just translocating through the nanopore. (a) , (b). , and (c) a possible elasticity spring model.
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