Complex dynamics of a pyranose ring structure molecule attached to an atomic force microscope


Journal Article

Dynamic numerical simulations were performed for a pyranose ring structure molecule attached to an Atomic Force Microscope (AFM) using a standard semiempirical potential energy surface model. The fundamental static force-extension behavior was first determined using a slow pulling base excitation at the AFM probe. The static force-extension curve displays a stiffness nonlinearity, both softening and hardening, that depends upon level of the pulling force. For the dynamic analysis, a single harmonic base excitation is applied to the AFM probe. A typical evolution process from periodic to aperiodic or chaotic motion obtained by varying the excitation frequency and amplitude is discussed. A strong chaotic response motion was generated for certain system parameters. The numerical analysis shows this chaotic response arises from a molecular structure conformational change. © Springer 2006.

Full Text

Duke Authors

Cited Authors

  • Tang, D; Attar, P; Li, A; Dowell, EH

Published Date

  • August 1, 2006

Published In

Volume / Issue

  • 45 / 3-4

Start / End Page

  • 283 - 303

International Standard Serial Number (ISSN)

  • 0924-090X

Digital Object Identifier (DOI)

  • 10.1007/s11071-006-0508-9

Citation Source

  • Scopus