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Title: Thermodynamics of the adsorption of flexible polymers on nanowires

Journal Article · · Journal of Chemical Physics
DOI:https://doi.org/10.1063/1.4913959· OSTI ID:1233165
ORCiD logo [1]; ORCiD logo [2];  [3]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Univ. Leipzig, Leipzig (Germany); The Univ. of Georgia, Athens, GA (United States)
  3. The Univ. of Georgia, Athens, GA (United States); Univ. Federal de Mato Grosso, Mato Grosso (Brazil); Univ. Federal de Minas Gerais, Minas Gerais (Brazil)

Generalized-ensemble simulations enable the study of complex adsorption scenarios of a coarse-grained model polymer near an attractive nanostring, representing an ultrathin nanowire. We perform canonical and microcanonical statistical analyses to investigate structural transitions of the polymer and discuss their dependence on the temperature and on model parameters such as effective wire thickness and attraction strength. The result is a complete hyperphase diagram of the polymer phases, whose locations and stability are influenced by the effective material properties of the nanowire and the strength of the thermal fluctuations. Major structural polymer phases in the adsorbed state include compact droplets attached to or wrapping around the wire, and tubelike conformations with triangular pattern that resemble ideal boron nanotubes. In conclusion, the classification of the transitions is performed by microcanonical inflection-point analysis.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
1207437; SFB/TRR 102; 402091/2012-4; AC52-06NA25396
OSTI ID:
1233165
Report Number(s):
LA-UR-14-27917; JCPSA6
Journal Information:
Journal of Chemical Physics, Vol. 142, Issue 10; ISSN 0021-9606
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 8 works
Citation information provided by
Web of Science

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