772 research outputs found
A semiflexible polymer chain under geometrical restrictions: Only bulk behaviour and no surface adsorption
We analyse the conformational behaviour of a linear semiflexible homo-polymer
chain confined by two geometrical constraints under a good solvent condition in
two dimensions. The constraints are stair shaped impenetrable surfaces. The
impenetrable surfaces are lines in a two dimensional space. The infinitely long
polymer chain is confined in between such two (A and B) surfaces. A lattice
model of a fully directed self-avoiding walk is used to calculate the exact
expression of the partition function, when the chain has attractive interaction
with one or both the constraints. It has been found that under the proposed
model, the chain shows only a bulk behaviour. In other words, there is no
possibility of adsorption of the chain due to restrictions imposed on the walks
of the chain.Comment: 9 pages, 2 figure
Theoretical estimate of the probability for macromolecule formation
We estimate the probability regarding polymerization of a macromolecule which
is made of distinct monomers. The lattice model of the random walk has been
used to mimic the conformations of an ideal chain in two and three dimensions.
It has been shown through analytical estimates that the flexible macromolecules
may be easily formed than the stiff macromolecules in two and three dimensions.Comment: 08 Pages, 04 Figures and a Tabl
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