Document Type
Article
Abstract
We have fabricated a stack of five 1,2-dipalmitoyl-sn-3-phosphatidylethanolamine (DPPE) bilayers supported on a polished silicon substrate in excess water. The density profile of these stacks normal to the substrate was obtained through analysis of x-ray reflectivity. Near the substrate, we find the layer roughness and repeat spacing are both significantly smaller than values found in bulk multilayer systems. The reduced spacing and roughness result from suppression of lateral fluctuations due to the flat substrate boundary. The layer spacing decrease then occurs due to reduced Helfrich repulsion.
DOI
10.1103/PhysRevE.84.041914
Publication Date
1-1-2011
Recommended Citation
C.M. DeCaro, J.D. Berry, L.B. Lurio, Y.C. Ma, G. Chen, S. Sinha, L Tayebi, A.N. Parkh, Z Jiang,a nd A.R. Sandy, "Substrate suppression of thermal roughness in stacked supported bilaters", Phys. Rev. E 84 041914 (2011)
Original Citation
C.M. DeCaro, J.D. Berry, L.B. Lurio, Y.C. Ma, G. Chen, S. Sinha, L Tayebi, A.N. Parkh, Z Jiang,a nd A.R. Sandy, "Substrate suppression of thermal roughness in stacked supported bilaters", Phys. Rev. E 84 041914 (2011)
Legacy Department
Department of Physics
Sponsorship
This work was partially supported by NSF Grants No. DMR-0706369 and No. DMR-0706665. Use of the Advanced Photon Sourcewas supported by theUSDepartment of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357. SKS and ANP wish to acknowledge support from the Office of Basic Energy Sciences, US Department of Energy, via Grant No. DE-FG02- 04ER46173. We would also like to thank Suresh Narayanan for his support of the experimental work at Sector 8-ID.
ISSN
1539-3755
Language
eng
Publisher
American Physical Society
