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Chin. Phys. B, 2009, Vol. 18(2): 658-663    DOI: 10.1088/1674-1056/18/2/044
CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES Prev   Next  

Pair interaction of bilayer-coated nanoscopic particles

Zhang Qi-Yi(张启义)
Department of Mathematics and Physics, Chongqing University of Science and Technology, Chongqing 401331, China
Abstract  The pair interaction between bilayer membrane-coated nanosized particles has been explored by using the self-consistent field (SCF) theory. The bilayer membranes are composed of amphiphilic polymers. For different system parameters, the pair-interaction free energies are obtained. Particular emphasis is placed on the analysis of a sequence of structural transformations of bilayers on spherical particles, which occur during their approaching processes. For different head fractions of amphiphiles, the asymmetrical morphologies between bilayers on two particles and the inverted micellar intermediates have been found in the membrane fusion pathway. These results can benefit the fabrication of vesicles as encapsulation vectors for drug and gene delivery.
Keywords:  bilayer membrane      inverted micellar intermediates      nanoparticle      self-consistent field theory  
Received:  11 July 2008      Revised:  09 August 2008      Accepted manuscript online: 
PACS:  87.16.D- (Membranes, bilayers, and vesicles)  
  87.15.K- (Molecular interactions; membrane-protein interactions)  
  87.14.Cc (Lipids)  
  87.85.Qr (Nanotechnologies-design)  
  05.70.Ce (Thermodynamic functions and equations of state)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No 20804060).

Cite this article: 

Zhang Qi-Yi(张启义) Pair interaction of bilayer-coated nanoscopic particles 2009 Chin. Phys. B 18 658

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