| AVS 60th International Symposium and Exhibition | |
| Nanoparticle-Liquid Interfaces Focus Topic | Friday Sessions |
| Session NL+AS+BI+SA-FrM |
| Session: | Emerging Methods to Identify and Measure Nanomaterials in Biological Environments |
| Presenter: | T.W. van Buuren, Lawrence Livermore National Laboratory |
| Authors: | T.W. van Buuren, Lawrence Livermore National Laboratory T.M. Willey, Lawrence Livermore National Laboratory J.R.I. Lee, Lawrence Livermore National Laboratory I.C. Tran, Lawrence Livermore National Laboratory M. Bagge-Hansen, Lawrence Livermore National Laboratory |
| Correspondent: | Click to Email |
Development in nanoscale engineering has enabled bioelectronics that can mimic and/or interact with the biological systems. Lipid bilayer-functionalized Si nanowires are considered as a promising candidate for the construction of bioelectrochemical devices. These biomimetic lipid bilayers serve as a general host matrix for bio-functional components such as membrane proteins. Though meaningful technological advancement of these materials has been made, critical questions about their structural and chemical composition remain. Small angle x-ray scattering (SAXS) experiments are used to investigate the structure of the lipid bilayers on Si nanowires, which provide information on the overall 1-D bilayer structure, the effect of substrate curvature on the lipid packing and local self-organization. The SAXS derived lateral-averaged characterizations are then corroborated with local arrangements of lipid bilayers on Si nanowires revealed by Scanning Transmission X-ray Spectroscopy (STXM). The results provide insights into a number of unresolved questions that are crucial for the comprehensive understanding this class of materials.
This work performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344.