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The effect of chain length on the mean value of the end-to-end distance of a random-flight polymer chain adsorbed on a surface

✍ Scribed by Anil Kumar; Santosh K. Gupta; Ratan Mohan

Publisher: Elsevier Science
Year: 1977
Tongue: English
Weight: 415 KB
Volume: 52
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(77)80486-7

No coin nor oath required. For personal study only.

✦ Synopsis

A general solution of the onedimensional random-walk probIem with an adsorbing barrier has been devefoped. For a given adsorption energy, 8, as the chain length is incx*sed, the mean position of the free end of the molecule with respect to the surface, z, approaches the asymptotic values predicted by Rubin. The attainment of the asymptote is found to become more rapid as 0 increases. For a given chain length, N, as 0 is varied, there is a smooth transition in the value of z at Bc even for as high a value of N = 250 in contrast to the sharp transition predicted by the asymptotic solution.

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