Advanced mechanical models of DNA elasticity. (2016)

• Record Type: Book
• Further Information: Note: Yakov M. Tseytlin.
• Authors: Tseytlin, Yakov M
• Contents: 1. DNA molecule mechanical properties and models. Experimental and theoretical data. dsDNA and ssDNA, geometry and parameters: persistence length, helical pitch, base pairs. Features of known statistical models: Worm-like Chain (WLC), Freely Joint Chain (FJC), Discreet Persistent Chain (DPC), Coarse-grained model, Used mechanical models: Elastic rod, rod with overwinding wires, accordion bellows. Necessity of a new advanced model based on Helicoidal nano-Sensor (HNS). This model has similar geometrical, linear and nonlinear mechanical features with the DNA molecule unlike models based on a wires wrapped elastic rod, accordion bellows, or an imaginary combination of “multiple soft and hard linear springs”, presented in some recent publications. 2. Kinematics of elastic helicoidal beam. Elastic helicoid. Helix parameters. Specific rigidities. 3. Motion Transformation in a Thin Helicoidal Strip. Helicoidal pretwisted strip. Form coefficients. Effective cross sections. 4. Special features of the elastic sensors. Fatigue options. A coiled ribbon spring. 5. Vibrating helicoidal sensors. Twisting tape vibrations. Helicoidal multivibrators. The elastic longitudinal links. Internal friction (damping) asymmetry. State of stress, fluctuations. Quasi-Helicoids, Multivibrators with shells. 6. DNA linear nano-helicoidal model. Main features, Young’s modulus, conditional Poisson’s ratio. Persistence length, Medium influence. Twist-stretch coupling. Overwinding options. 7. Nonlinear DNA linear nano-helicoidal model. Thermomechanical fluctuations. Transition dsDNA to ssDNA at stretching. Force-stretch formula. 8. Coiled ribbon model for ssDNA. Pretwisted strip-coiled ribbon chain. Ultimate stress at overstretching. Conclusions and recommendations.
• Publisher Details: Amsterdam : Academic Press
• Publication Date: 2016
• Extent: 1 online resource
• Subjects: 572.86; DNA; Elasticity
• Languages: English
• ISBNs: 9780128020364
• Related ISBNs: 9780128019993
• Notes: Note: Description based on CIP data; item not viewed.
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