Elasticity of strongly stretched ssDNA
نویسندگان
چکیده
منابع مشابه
Elasticity of strongly stretched ssDNA
We present a simple model which describes elastic response of single-stranded DNA (ssDNA) to stretching, including the regime of very high force (up to 1000 pN). ssDNA is modelled as a discreet persistent chain, whose ground state is a zigzag rather than a straight line configuration. This mimics the underlying molecular architecture and helps to explain the experimentally observed staturation ...
متن کاملIntrinsic Stepwise Translocation of Stretched ssDNA in Graphene Nanopores
We investigate by means of molecular dynamics simulations stretch-induced stepwise translocation of single-stranded DNA (ssDNA) through graphene nanopores. The intrinsic stepwise DNA motion, found to be largely independent of size and shape of the graphene nanopore, is brought about through alternating conformational changes between spontaneous adhesion of DNA bases to the rim of the graphene n...
متن کاملSemisoft elasticity and director reorientation in stretched sheets of nematic elastomers.
A two-dimensional effective model for the semisoft elastic behavior of nematic elastomers is derived in the thin film limit. The model is used to investigate numerically the force-stretch curves and the deformed shape, and to resolve the local patterns in the director orientation in a stretching experiment. From the force-stretch curves we recover the two critical stretches which mark the trans...
متن کاملHigh-order symmetry-preserving discretization of convection-diffusion equations on strongly stretched grids
Many physical phenomena feature thin boundary layers, in which the solution varies much more rapidly than elsewhere in the domain of interest. A ‘natural’ approach is to adapt a computational grid to the variations of the solution. In this way one obtains grids with a large diversity in mesh size, i.e. the grid shows strong stretching. ‘Traditional’ discretization methods (based on Lagrangian i...
متن کاملThe Elasticity of Elasticity
In this talk I assert that the usual interpretation of what one means by “elasticity” is much too insular and illustrate my thesis by introducing implicit constitutive theories that can describe the nondissipative response of solids. I show that response which was hitherto untenable within the context of Cauchy or Green Elasticity are not only possible, they can explain phenomena that have thus...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physica A: Statistical Mechanics and its Applications
سال: 2007
ISSN: 0378-4371
DOI: 10.1016/j.physa.2007.04.119