The Effect of Immobilization Method on DNA Stretching Characteristics

The problem of stretching a flexible polymer molecule with specified conditions at the ends under the action of a fixed force is considered. A mathematical model has been constructed for various energy functions describing the elasticity of the polymer and various immobilization methods. It is shown that the dependence of stretching on the length of the polymer is linear. The results of numerical calculations are presented. The results obtained make it possible to improve the analysis of experimental data on polymer stretching. The theory provides several verifiable predictions, including experimental methods that improve the accuracy of measurements.